<template>
							 | 
						|
								    <view class="audio-controls-wrapper">
							 | 
						|
								        <!-- 会员限制页面不显示任何音频控制 -->
							 | 
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								        <view v-if="isAudioDisabled" class="member-restricted-container">
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								            <!-- 不显示任何内容,完全隐藏音频功能 -->
							 | 
						|
								        </view>
							 | 
						|
								
							 | 
						|
								        <!-- 音频加载中 -->
							 | 
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								        <view v-else-if="isTextPage && isAudioLoading" class="audio-loading-container">
							 | 
						|
								            <uv-loading-icon mode="spinner" size="30" color="#06DADC"></uv-loading-icon>
							 | 
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								            <text class="loading-text">第{{ currentPage }}页音频加载中,请稍等...</text>
							 | 
						|
								        </view>
							 | 
						|
								
							 | 
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								        <!-- 正常音频控制栏 -->
							 | 
						|
								        <view v-else-if="isTextPage && hasAudioData" class="audio-controls">
							 | 
						|
								            <!-- 加载指示器 -->
							 | 
						|
								            <view v-if="isAudioLoading" class="loading-indicator">
							 | 
						|
								                <uv-loading-icon mode="spinner" size="16" color="#06DADC"></uv-loading-icon>
							 | 
						|
								                <text class="loading-indicator-text">正在加载更多音频...</text>
							 | 
						|
								            </view>
							 | 
						|
								
							 | 
						|
								            <!-- <view class="audio-time">
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								                <text class="time-text">{{ formatTime(currentTime) }}</text>
							 | 
						|
								                <view class="progress-container">
							 | 
						|
								                    <uv-slider v-model="sliderValue" :min="0" :max="totalTime" :step="0.1" activeColor="#06DADC"
							 | 
						|
								                        backgroundColor="#e0e0e0" :blockSize="16" blockColor="#ffffff" disabled
							 | 
						|
								                        :customStyle="{ flex: 1, margin: '0 10px' }" />
							 | 
						|
								                </view>
							 | 
						|
								                <text class="time-text">{{ formatTime(totalTime) }}</text>
							 | 
						|
								            </view> -->
							 | 
						|
								
							 | 
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								            <view class="audio-controls-row">
							 | 
						|
								                <view class="control-btn" @click="toggleLoop">
							 | 
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								                    <uv-icon name="reload" size="20" :color="isLoop ? '#06DADC' : '#999'"></uv-icon>
							 | 
						|
								                    <text class="control-text">循环</text>
							 | 
						|
								                </view>
							 | 
						|
								
							 | 
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								                <view class="control-btn" @click="$emit('previous-page')">
							 | 
						|
								                    <text class="control-text">上一页</text>
							 | 
						|
								                </view>
							 | 
						|
								
							 | 
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								                <view class="play-btn" @click="togglePlay">
							 | 
						|
								                    <uv-icon :name="isPlaying ? 'pause-circle-fill' : 'play-circle-fill'" size="40"
							 | 
						|
								                        color="#666"></uv-icon>
							 | 
						|
								                </view>
							 | 
						|
								
							 | 
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								                <view class="control-btn" @click="$emit('next-page')">
							 | 
						|
								                    <text class="control-text">下一页</text>
							 | 
						|
								                </view>
							 | 
						|
								
							 | 
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								                <view class="control-btn" @click="toggleSpeed" :class="{ 'disabled': !playbackRateSupported }">
							 | 
						|
								                    <text class="control-text" :style="{ opacity: playbackRateSupported ? 1 : 0.5 }">
							 | 
						|
								                        {{ playbackRateSupported ? playSpeed + 'x' : '不支持' }}
							 | 
						|
								                    </text>
							 | 
						|
								                </view>
							 | 
						|
								            </view>
							 | 
						|
								        </view>
							 | 
						|
								    </view>
							 | 
						|
								</template>
							 | 
						|
								
							 | 
						|
								<script>
							 | 
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								import config from '@/mixins/config.js'
							 | 
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								import audioManager from '@/utils/audioManager.js'
							 | 
						|
								
							 | 
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								export default {
							 | 
						|
								    name: 'AudioControls',
							 | 
						|
								    mixins: [config],
							 | 
						|
								    props: {
							 | 
						|
								        // 基础数据
							 | 
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								        currentPage: {
							 | 
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								            type: Number,
							 | 
						|
								            default: 1
							 | 
						|
								        },
							 | 
						|
								        courseId: {
							 | 
						|
								            type: String,
							 | 
						|
								            default: ''
							 | 
						|
								        },
							 | 
						|
								        voiceId: {
							 | 
						|
								            type: [String, Number],
							 | 
						|
								            default: ''
							 | 
						|
								        },
							 | 
						|
								        bookPages: {
							 | 
						|
								            type: Array,
							 | 
						|
								            default: () => []
							 | 
						|
								        },
							 | 
						|
								        isTextPage: {
							 | 
						|
								            type: Boolean,
							 | 
						|
								            default: false
							 | 
						|
								        },
							 | 
						|
								        shouldLoadAudio: {
							 | 
						|
								            type: Boolean,
							 | 
						|
								            default: false
							 | 
						|
								        },
							 | 
						|
								        isMember: {
							 | 
						|
								            type: Boolean,
							 | 
						|
								            default: false
							 | 
						|
								        },
							 | 
						|
								        currentPageRequiresMember: {
							 | 
						|
								            type: Boolean,
							 | 
						|
								            default: false
							 | 
						|
								        },
							 | 
						|
								        pagePay: {
							 | 
						|
								            type: Array,
							 | 
						|
								            default: () => []
							 | 
						|
								        },
							 | 
						|
								        isWordAudioPlaying: {
							 | 
						|
								            type: Boolean,
							 | 
						|
								            default: false
							 | 
						|
								        }
							 | 
						|
								    },
							 | 
						|
								    data() {
							 | 
						|
								        return {
							 | 
						|
								            // 音频控制相关数据
							 | 
						|
								            isPlaying: false,
							 | 
						|
								            currentTime: 0,
							 | 
						|
								            totalTime: 0,
							 | 
						|
								            sliderValue: 0, // 滑動條的值
							 | 
						|
								            isDragging: false, // 是否正在拖動滑動條
							 | 
						|
								            isLoop: false,
							 | 
						|
								            playSpeed: 1.0,
							 | 
						|
								            speedOptions: [0.5, 0.8, 1.0, 1.25, 1.5, 2.0], // 根據uni-app文檔的官方支持值
							 | 
						|
								            playbackRateSupported: true, // 播放速度控制是否支持
							 | 
						|
								            // 音频数组管理
							 | 
						|
								            currentPageAudios: [], // 当前页面的音频数组
							 | 
						|
								            currentAudioIndex: 0, // 当前播放的音频索引
							 | 
						|
								            audioContext: null, // 音频上下文
							 | 
						|
								            currentAudio: null, // 当前音频实例
							 | 
						|
								            // 音频缓存管理
							 | 
						|
								            audioCache: {}, // 页面音频缓存 {pageIndex: {audios: [], totalDuration: 0}}
							 | 
						|
								            // 预加载相关状态
							 | 
						|
								            isPreloading: false, // 是否正在预加载
							 | 
						|
								            preloadProgress: 0, // 预加载进度 (0-100)
							 | 
						|
								            preloadQueue: [], // 预加载队列
							 | 
						|
								            // 音频加载状态
							 | 
						|
								            isAudioLoading: false, // 音频是否正在加载
							 | 
						|
								            hasAudioData: false, // 当前页面是否已有音频数据
							 | 
						|
								            isVoiceChanging: false, // 音色切换中的加载状态
							 | 
						|
								            audioLoadFailed: false, // 音频获取失败状态
							 | 
						|
								            // 文本高亮相关
							 | 
						|
								            currentHighlightIndex: -1, // 当前高亮的文本索引
							 | 
						|
								            // 课程切换相关状态
							 | 
						|
								            isJustSwitchedCourse: false, // 是否刚刚切换了课程
							 | 
						|
								            // 页面切换防抖相关
							 | 
						|
								            pageChangeTimer: null, // 页面切换防抖定时器
							 | 
						|
								            isPageChanging: false, // 是否正在切换页面
							 | 
						|
								            // 请求取消相关
							 | 
						|
								            currentRequestId: null, // 当前音频请求ID
							 | 
						|
								            shouldCancelRequest: false, // 是否应该取消当前请求
							 | 
						|
								            // 本地音色ID(避免直接修改prop)
							 | 
						|
								            localVoiceId: '', // 本地音色ID,从prop初始化
							 | 
						|
								            // 倍速检查相关
							 | 
						|
								            lastSpeedCheckTime: -1, // 上次检查倍速的时间点
							 | 
						|
								            // 防抖相关
							 | 
						|
								            isProcessingEnded: false, // 防止 onAudioEnded 多次触发
							 | 
						|
								        }
							 | 
						|
								    },
							 | 
						|
								    computed: {
							 | 
						|
								        // 计算音频播放进度百分比
							 | 
						|
								        progressPercent() {
							 | 
						|
								            return this.totalTime > 0 ? (this.currentTime / this.totalTime) * 100 : 0;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 检查当前页面是否有缓存的音频
							 | 
						|
								        hasCurrentPageCache() {
							 | 
						|
								            const cacheKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								            const cachedData = this.audioCache[cacheKey];
							 | 
						|
								
							 | 
						|
								            // 更严格的缓存有效性检查
							 | 
						|
								            if (!cachedData || !cachedData.audios || cachedData.audios.length === 0) {
							 | 
						|
								                return false;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查缓存的音色ID是否与当前音色匹配
							 | 
						|
								            if (cachedData.voiceId && cachedData.voiceId !== this.localVoiceId) {
							 | 
						|
								                // console.warn('缓存音色不匹配:', cachedData.voiceId, '!=', this.localVoiceId);
							 | 
						|
								                return false;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查音频URL是否有效
							 | 
						|
								            const firstAudio = cachedData.audios[0];
							 | 
						|
								            if (!firstAudio || !firstAudio.url) {
							 | 
						|
								                // console.warn('缓存音频数据无效');
							 | 
						|
								                return false;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            return true;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 判断音频功能是否应该被禁用(会员限制页面且用户非会员)
							 | 
						|
								        isAudioDisabled() {
							 | 
						|
								            // 免费用户不受音频播放限制
							 | 
						|
								            if (this.userInfo && this.userInfo.freeUser === 'Y') {
							 | 
						|
								                return false;
							 | 
						|
								            }
							 | 
						|
								            return this.currentPageRequiresMember && !this.isMember;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 检查当前页面是否正在预加载中
							 | 
						|
								        isCurrentPagePreloading() {
							 | 
						|
								            // 如果全局预加载状态为true,需要检查当前页面是否在预加载队列中
							 | 
						|
								            if (this.isPreloading) {
							 | 
						|
								                // 检查当前页面是否有缓存(如果有缓存说明已经预加载完成)
							 | 
						|
								                const cacheKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								                const hasCache = this.audioCache[cacheKey] && this.audioCache[cacheKey].audios && this.audioCache[cacheKey].audios.length > 0;
							 | 
						|
								
							 | 
						|
								                // 如果没有缓存且正在预加载,说明当前页面可能正在预加载中
							 | 
						|
								                if (!hasCache) {
							 | 
						|
								                    // console.log('当前页面可能正在预加载中,页面:', this.currentPage, '缓存状态:', hasCache);
							 | 
						|
								                    return true;
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								            return false;
							 | 
						|
								        }
							 | 
						|
								    },
							 | 
						|
								    watch: {
							 | 
						|
								        // 监听页面变化,重置音频状态
							 | 
						|
								        currentPage: {
							 | 
						|
								            handler(newPage, oldPage) {
							 | 
						|
								                if (newPage !== oldPage) {
							 | 
						|
								                    // console.log('页面切换:', oldPage, '->', newPage);
							 | 
						|
								
							 | 
						|
								                    // 设置页面切换状态
							 | 
						|
								                    this.isPageChanging = true;
							 | 
						|
								
							 | 
						|
								                    // 立即重置音频状态,防止穿音
							 | 
						|
								                    this.resetAudioState();
							 | 
						|
								
							 | 
						|
								                    // 清除之前的防抖定时器
							 | 
						|
								                    if (this.pageChangeTimer) {
							 | 
						|
								                        clearTimeout(this.pageChangeTimer);
							 | 
						|
								                    }
							 | 
						|
								
							 | 
						|
								                    // 使用防抖机制,避免频繁切换时重复加载
							 | 
						|
								                    this.pageChangeTimer = setTimeout(() => {
							 | 
						|
								                        this.isPageChanging = false;
							 | 
						|
								
							 | 
						|
								                        // 检查新页面是否有预加载完成的音频缓存
							 | 
						|
								                        this.$nextTick(() => {
							 | 
						|
								                            this.checkAndLoadPreloadedAudio();
							 | 
						|
								                        });
							 | 
						|
								                    }, 300); // 300ms防抖延迟
							 | 
						|
								                }
							 | 
						|
								            },
							 | 
						|
								            immediate: false
							 | 
						|
								        },
							 | 
						|
								        // 监听音色变化,更新本地音色ID
							 | 
						|
								        voiceId: {
							 | 
						|
								            handler(newVoiceId, oldVoiceId) {
							 | 
						|
								                if (newVoiceId !== oldVoiceId) {
							 | 
						|
								                    // console.log('🎵 音色ID变化:', oldVoiceId, '->', newVoiceId);
							 | 
						|
								                    // 更新本地音色ID
							 | 
						|
								                    this.localVoiceId = newVoiceId;
							 | 
						|
								                }
							 | 
						|
								            },
							 | 
						|
								            immediate: true // 立即执行,用于初始化
							 | 
						|
								        },
							 | 
						|
								        // 监听页面数据变化,当页面数据重新加载后自动获取音频
							 | 
						|
								        bookPages: {
							 | 
						|
								            handler(newBookPages, oldBookPages) {
							 | 
						|
								                // 检查当前页面数据是否从无到有
							 | 
						|
								                const currentPageData = newBookPages && newBookPages[this.currentPage - 1];
							 | 
						|
								                const oldCurrentPageData = oldBookPages && oldBookPages[this.currentPage - 1];
							 | 
						|
								
							 | 
						|
								                if (currentPageData && !oldCurrentPageData && this.shouldLoadAudio && this.courseId) {
							 | 
						|
								                    console.log(`🎵 bookPages监听: 当前页面数据已加载,自动获取音频,页面=${this.currentPage}`);
							 | 
						|
								                    this.$nextTick(() => {
							 | 
						|
								                        this.getCurrentPageAudio(true); // 启用自动播放
							 | 
						|
								                    });
							 | 
						|
								                }
							 | 
						|
								            },
							 | 
						|
								            deep: true // 深度监听数组变化
							 | 
						|
								        }
							 | 
						|
								    },
							 | 
						|
								    methods: {
							 | 
						|
								        // 辅助方法:查找第一个非导语音频的索引
							 | 
						|
								        findFirstNonLeadAudio() {
							 | 
						|
								            if (!this.currentPageAudios || this.currentPageAudios.length === 0) {
							 | 
						|
								                return -1;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 从第一个音频开始查找非导语音频
							 | 
						|
								            for (let i = 0; i < this.currentPageAudios.length; i++) {
							 | 
						|
								                const audioData = this.currentPageAudios[i];
							 | 
						|
								                if (audioData && !audioData.isLead) {
							 | 
						|
								                    console.log(`🎵 findFirstNonLeadAudio: 找到第一个非导语音频,索引=${i}, isLead=${audioData.isLead}`);
							 | 
						|
								                    return i;
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 如果所有音频都是导语,返回 -1 表示不播放
							 | 
						|
								            console.log('🎵 findFirstNonLeadAudio: 所有音频都是导语,返回 -1 不播放');
							 | 
						|
								            return -1;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 检查并自动加载预加载完成的音频
							 | 
						|
								        checkAndLoadPreloadedAudio() {
							 | 
						|
								            // 只在需要加载音频的页面检查
							 | 
						|
								            if (!this.shouldLoadAudio) {
							 | 
						|
								                // 非文本页面,确保音频状态为空
							 | 
						|
								                this.currentPageAudios = [];
							 | 
						|
								                this.totalTime = 0;
							 | 
						|
								                this.hasAudioData = false;
							 | 
						|
								                this.isAudioLoading = false;
							 | 
						|
								
							 | 
						|
								                // 通知父组件音频状态变化
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: false,
							 | 
						|
								                    isLoading: false,
							 | 
						|
								                    currentHighlightIndex: -1
							 | 
						|
								                });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查当前页面是否有缓存的音频数据
							 | 
						|
								            const pageKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								            const cachedAudio = this.audioCache[pageKey];
							 | 
						|
								
							 | 
						|
								            if (cachedAudio && cachedAudio.audios && cachedAudio.audios.length > 0) {
							 | 
						|
								                // 有缓存:直接显示控制栏并自动播放
							 | 
						|
								                this.currentPageAudios = cachedAudio.audios;
							 | 
						|
								                this.totalTime = cachedAudio.totalDuration || 0;
							 | 
						|
								                this.hasAudioData = true;
							 | 
						|
								                this.isAudioLoading = false;
							 | 
						|
								                
							 | 
						|
								                // 初始化音频索引为第一个非导语音频
							 | 
						|
								                const firstNonLeadIndex = this.findFirstNonLeadAudio();
							 | 
						|
								                this.currentAudioIndex = firstNonLeadIndex;
							 | 
						|
								                this.currentTime = 0;
							 | 
						|
								                this.currentHighlightIndex = -1;
							 | 
						|
								
							 | 
						|
								                console.log(`🎵 checkAndLoadPreloadedAudio: 从缓存加载音频,页面=${this.currentPage}, 音频数量=${this.currentPageAudios.length}`);
							 | 
						|
								
							 | 
						|
								                // 通知父组件音频状态变化
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: true,
							 | 
						|
								                    isLoading: false,
							 | 
						|
								                    currentHighlightIndex: -1
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                // 自动播放缓存的音频
							 | 
						|
								                this.$nextTick(() => {
							 | 
						|
								                    if (this.currentPageAudios.length > 0 && !this.isVoiceChanging) {
							 | 
						|
								                        // 查找第一个非导语音频
							 | 
						|
								                        const firstNonLeadIndex = this.findFirstNonLeadAudio();
							 | 
						|
								                        if (firstNonLeadIndex >= 0 && firstNonLeadIndex < this.currentPageAudios.length) {
							 | 
						|
								                            // 设置当前音频索引为第一个非导语音频
							 | 
						|
								                            this.currentAudioIndex = firstNonLeadIndex;
							 | 
						|
								                            const firstAudioData = this.currentPageAudios[firstNonLeadIndex];
							 | 
						|
								                            
							 | 
						|
								                            console.log(`🎵 自动播放缓存音频(跳过导语): 索引=${firstNonLeadIndex}, isLead=${firstAudioData.isLead}, url=${firstAudioData.url}`);
							 | 
						|
								                            audioManager.playAudio(firstAudioData.url, 'sentence', { playbackRate: this.playSpeed });
							 | 
						|
								                            this.isPlaying = true;
							 | 
						|
								                            
							 | 
						|
								                            // 页面切换时需要立即更新高亮和滚动,不受防抖机制影响
							 | 
						|
								                            const highlightIndex = firstAudioData.originalTextIndex !== undefined ? firstAudioData.originalTextIndex : firstNonLeadIndex;
							 | 
						|
								                            this.currentHighlightIndex = highlightIndex;
							 | 
						|
								                            
							 | 
						|
								                            // 立即发送高亮变化事件
							 | 
						|
								                            this.emitHighlightChange(highlightIndex, firstAudioData);
							 | 
						|
								                            
							 | 
						|
								                            // 立即发送滚动事件,传入音频数据
							 | 
						|
								                            this.emitScrollToText(highlightIndex, firstAudioData);
							 | 
						|
								                            
							 | 
						|
								                            console.log(`🎵 页面切换自动播放(跳过导语): 高亮索引=${highlightIndex}, 页面=${this.currentPage}`);
							 | 
						|
								                        }
							 | 
						|
								                    }
							 | 
						|
								                });
							 | 
						|
								            } else {
							 | 
						|
								                // 没有缓存:自动开始加载音频
							 | 
						|
								                console.log(`🎵 checkAndLoadPreloadedAudio: 无缓存,开始加载音频,页面=${this.currentPage}`);
							 | 
						|
								                this.getCurrentPageAudio(true); // 启用自动播放
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 智能分割文本,按句号和逗号分割中英文文本
							 | 
						|
								        splitTextIntelligently(text) {
							 | 
						|
								            if (!text || typeof text !== 'string') {
							 | 
						|
								                return [text];
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 判断是否为中文文本(包含中文字符)
							 | 
						|
								            const isChinese = /[\u4e00-\u9fa5]/.test(text);
							 | 
						|
								            const maxLength = isChinese ? 100 : 200;
							 | 
						|
								
							 | 
						|
								            // 如果文本长度不超过限制,直接返回
							 | 
						|
								            if (text.length <= maxLength) {
							 | 
						|
								                return [{
							 | 
						|
								                    text: text,
							 | 
						|
								                    startIndex: 0,
							 | 
						|
								                    endIndex: text.length - 1
							 | 
						|
								                }];
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            const segments = [];
							 | 
						|
								            let currentText = text;
							 | 
						|
								            let globalStartIndex = 0;
							 | 
						|
								
							 | 
						|
								            while (currentText.length > 0) {
							 | 
						|
								                if (currentText.length <= maxLength) {
							 | 
						|
								                    // 剩余文本不超过限制,直接添加
							 | 
						|
								                    segments.push({
							 | 
						|
								                        text: currentText,
							 | 
						|
								                        startIndex: globalStartIndex,
							 | 
						|
								                        endIndex: globalStartIndex + currentText.length - 1
							 | 
						|
								                    });
							 | 
						|
								                    break;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 在限制长度内寻找最佳分割点
							 | 
						|
								                let splitIndex = maxLength;
							 | 
						|
								                let bestSplitIndex = -1;
							 | 
						|
								
							 | 
						|
								                // 优先寻找句号
							 | 
						|
								                for (let i = Math.min(maxLength, currentText.length - 1); i >= Math.max(0, maxLength - 50); i--) {
							 | 
						|
								                    const char = currentText[i];
							 | 
						|
								                    if (char === '。' || char === '.') {
							 | 
						|
								                        bestSplitIndex = i + 1; // 包含句号
							 | 
						|
								                        break;
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 如果没找到句号,寻找逗号
							 | 
						|
								                if (bestSplitIndex === -1) {
							 | 
						|
								                    for (let i = Math.min(maxLength, currentText.length - 1); i >= Math.max(0, maxLength - 50); i--) {
							 | 
						|
								                        const char = currentText[i];
							 | 
						|
								                        if (char === ',' || char === ',' || char === ';' || char === ';') {
							 | 
						|
								                            bestSplitIndex = i + 1; // 包含标点符号
							 | 
						|
								                            break;
							 | 
						|
								                        }
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 如果还是没找到合适的分割点,使用默认长度
							 | 
						|
								                if (bestSplitIndex === -1) {
							 | 
						|
								                    bestSplitIndex = maxLength;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 提取当前段落
							 | 
						|
								                const segment = currentText.substring(0, bestSplitIndex).trim();
							 | 
						|
								                if (segment.length > 0) {
							 | 
						|
								                    segments.push({
							 | 
						|
								                        text: segment,
							 | 
						|
								                        startIndex: globalStartIndex,
							 | 
						|
								                        endIndex: globalStartIndex + segment.length - 1
							 | 
						|
								                    });
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 更新剩余文本和全局索引
							 | 
						|
								                currentText = currentText.substring(bestSplitIndex).trim();
							 | 
						|
								                globalStartIndex += bestSplitIndex;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            return segments;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 分批次请求音频
							 | 
						|
								        async requestAudioInBatches(text, voiceType) {
							 | 
						|
								            const segments = this.splitTextIntelligently(text);
							 | 
						|
								            const audioSegments = [];
							 | 
						|
								            let totalDuration = 0;
							 | 
						|
								            const requestId = this.currentRequestId; // 保存当前请求ID
							 | 
						|
								
							 | 
						|
								            for (let i = 0; i < segments.length; i++) {
							 | 
						|
								                // 检查是否应该取消请求
							 | 
						|
								                if (this.shouldCancelRequest || this.currentRequestId !== requestId) {
							 | 
						|
								
							 | 
						|
								                    return null; // 返回null表示请求被取消
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                const segment = segments[i];
							 | 
						|
								
							 | 
						|
								                try {
							 | 
						|
								                    console.log(`请求第 ${i + 1}/${segments.length} 段音频:`, segment.text.substring(0, 50) + '...');
							 | 
						|
								
							 | 
						|
								                    const radioRes = await this.$api.music.textToVoice({
							 | 
						|
								                        text: segment.text,
							 | 
						|
								                        voiceType: voiceType,
							 | 
						|
								                    });
							 | 
						|
								
							 | 
						|
								                    if (radioRes.code === 200 && radioRes.result && radioRes.result.url) {
							 | 
						|
								                        const audioUrl = radioRes.result.url;
							 | 
						|
								                        const duration = radioRes.result.time || 0;
							 | 
						|
								
							 | 
						|
								                        audioSegments.push({
							 | 
						|
								                            url: audioUrl,
							 | 
						|
								                            text: segment.text,
							 | 
						|
								                            duration: duration,
							 | 
						|
								                            startIndex: segment.startIndex,
							 | 
						|
								                            endIndex: segment.endIndex,
							 | 
						|
								                            segmentIndex: i,
							 | 
						|
								                            isSegmented: segments.length > 1,
							 | 
						|
								                            originalText: text
							 | 
						|
								                        });
							 | 
						|
								
							 | 
						|
								                        totalDuration += duration;
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                    } else {
							 | 
						|
								                        console.error(`第 ${i + 1} 段音频请求失败:`, radioRes);
							 | 
						|
								                        // 即使某段失败,也继续处理其他段
							 | 
						|
								                        audioSegments.push({
							 | 
						|
								                            url: null,
							 | 
						|
								                            text: segment.text,
							 | 
						|
								                            duration: 0,
							 | 
						|
								                            startIndex: segment.startIndex,
							 | 
						|
								                            endIndex: segment.endIndex,
							 | 
						|
								                            segmentIndex: i,
							 | 
						|
								                            error: true,
							 | 
						|
								                            isSegmented: segments.length > 1,
							 | 
						|
								                            originalText: text
							 | 
						|
								                        });
							 | 
						|
								                    }
							 | 
						|
								                } catch (error) {
							 | 
						|
								                    console.error(`第 ${i + 1} 段音频请求异常:`, error);
							 | 
						|
								                    audioSegments.push({
							 | 
						|
								                        url: null,
							 | 
						|
								                        text: segment.text,
							 | 
						|
								                        duration: 0,
							 | 
						|
								                        startIndex: segment.startIndex,
							 | 
						|
								                        endIndex: segment.endIndex,
							 | 
						|
								                        segmentIndex: i,
							 | 
						|
								                        error: true,
							 | 
						|
								                        isSegmented: segments.length > 1,
							 | 
						|
								                        originalText: text
							 | 
						|
								                    });
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 每个请求之间间隔200ms,避免请求过于频繁
							 | 
						|
								                if (i < segments.length - 1) {
							 | 
						|
								                    await new Promise(resolve => setTimeout(resolve, 0));
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            console.log(`分批次音频请求完成,成功 ${audioSegments.filter(s => !s.error).length}/${segments.length} 段`);
							 | 
						|
								
							 | 
						|
								            return {
							 | 
						|
								                audioSegments: audioSegments,
							 | 
						|
								                totalDuration: totalDuration,
							 | 
						|
								                originalText: text
							 | 
						|
								            };
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 获取当前页面的音频内容
							 | 
						|
								        async getCurrentPageAudio(autoPlay = false) {
							 | 
						|
								            // 🎯 确保音色ID已加载完成后再获取音频
							 | 
						|
								            if (!this.localVoiceId || this.localVoiceId === '' || this.localVoiceId === null || this.localVoiceId === undefined) {
							 | 
						|
								
							 | 
						|
								                // 设置加载失败状态
							 | 
						|
								                this.isAudioLoading = false;
							 | 
						|
								                this.audioLoadFailed = true;
							 | 
						|
								                this.hasAudioData = false;
							 | 
						|
								
							 | 
						|
								                // 通知父组件音频状态变化
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: false,
							 | 
						|
								                    isLoading: false,
							 | 
						|
								                    currentHighlightIndex: -1
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                uni.showToast({
							 | 
						|
								                    title: '音色未加载,请稍后重试',
							 | 
						|
								                    icon: 'none',
							 | 
						|
								                    duration: 2000
							 | 
						|
								                });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 检查是否正在页面切换中,如果是则不加载音频
							 | 
						|
								            if (this.isPageChanging) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查是否需要加载音频
							 | 
						|
								            if (!this.shouldLoadAudio) {
							 | 
						|
								
							 | 
						|
								                // 清空音频状态
							 | 
						|
								                this.currentPageAudios = [];
							 | 
						|
								                this.hasAudioData = false;
							 | 
						|
								                this.isAudioLoading = false;
							 | 
						|
								                this.audioLoadFailed = false;
							 | 
						|
								                this.currentAudioIndex = 0;
							 | 
						|
								                this.currentTime = 0;
							 | 
						|
								                this.totalTime = 0;
							 | 
						|
								                this.currentHighlightIndex = -1;
							 | 
						|
								
							 | 
						|
								                // 通知父组件音频状态变化
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: false,
							 | 
						|
								                    isLoading: false,
							 | 
						|
								                    currentHighlightIndex: -1
							 | 
						|
								                });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查会员限制
							 | 
						|
								            if (this.isAudioDisabled) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查是否已经在加载中,防止重复加载(音色切换时除外)
							 | 
						|
								            if (this.isAudioLoading && !this.isVoiceChanging) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            console.log('this.audioCache:', this.audioCache);
							 | 
						|
								
							 | 
						|
								            // 检查缓存中是否已有当前页面的音频数据
							 | 
						|
								            const cacheKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								            if (this.audioCache[cacheKey]) {
							 | 
						|
								
							 | 
						|
								                // 从缓存加载音频数据
							 | 
						|
								                this.currentPageAudios = this.audioCache[cacheKey].audios;
							 | 
						|
								                this.totalTime = this.audioCache[cacheKey].totalDuration;
							 | 
						|
								                
							 | 
						|
								                // 初始化音频索引为第一个非导语音频
							 | 
						|
								                const firstNonLeadIndex = this.findFirstNonLeadAudio();
							 | 
						|
								                this.currentAudioIndex = firstNonLeadIndex;
							 | 
						|
								                this.isPlaying = false;
							 | 
						|
								                this.currentTime = 0;
							 | 
						|
								                this.hasAudioData = true;
							 | 
						|
								                this.isAudioLoading = false;
							 | 
						|
								
							 | 
						|
								                // 如果是课程切换后的自动加载,清除切换标识
							 | 
						|
								                if (this.isJustSwitchedCourse) {
							 | 
						|
								                    this.isJustSwitchedCourse = false;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 通知父组件音频状态变化
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: this.hasAudioData,
							 | 
						|
								                    isLoading: this.isAudioLoading,
							 | 
						|
								                    currentHighlightIndex: this.currentHighlightIndex
							 | 
						|
								                });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 开始加载状态
							 | 
						|
								            this.isAudioLoading = true;
							 | 
						|
								            this.hasAudioData = false;
							 | 
						|
								
							 | 
						|
								            // 重置请求取消标识并生成新的请求ID
							 | 
						|
								            this.shouldCancelRequest = false;
							 | 
						|
								            this.currentRequestId = Date.now() + '_' + Math.random().toString(36).substr(2, 9);
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 清空当前页面音频数组
							 | 
						|
								            this.currentPageAudios = [];
							 | 
						|
								            this.currentAudioIndex = 0;
							 | 
						|
								            this.isPlaying = false;
							 | 
						|
								            this.currentTime = 0;
							 | 
						|
								            this.totalTime = 0;
							 | 
						|
								
							 | 
						|
								            // 通知父组件开始加载
							 | 
						|
								            this.$emit('audio-state-change', {
							 | 
						|
								                hasAudioData: this.hasAudioData,
							 | 
						|
								                isLoading: this.isAudioLoading,
							 | 
						|
								                currentHighlightIndex: this.currentHighlightIndex
							 | 
						|
								            });
							 | 
						|
								
							 | 
						|
								            try {
							 | 
						|
								                // 对着当前页面的每一个[]元素进行切割 如果是文本text类型则进行音频请求
							 | 
						|
								                const currentPageData = this.bookPages[this.currentPage - 1];
							 | 
						|
								                console.log(`🎵 getCurrentPageAudio: 当前页面=${this.currentPage}, 音色ID=${this.localVoiceId}, 课程ID=${this.courseId}`);
							 | 
						|
								                console.log(`🎵 getCurrentPageAudio: bookPages长度=${this.bookPages.length}, 当前页面数据:`, currentPageData);
							 | 
						|
								
							 | 
						|
								                // 检查页面数据是否存在且不为空
							 | 
						|
								                if (!currentPageData || currentPageData.length === 0) {
							 | 
						|
								                    console.log(`🎵 getCurrentPageAudio: 当前页面数据为空,可能还在加载中`);
							 | 
						|
								                    // 通知父组件页面数据需要加载
							 | 
						|
								                    this.$emit('page-data-needed', this.currentPage);
							 | 
						|
								
							 | 
						|
								                    // 设置加载失败状态
							 | 
						|
								                    this.isAudioLoading = false;
							 | 
						|
								                    this.audioLoadFailed = true;
							 | 
						|
								                    this.hasAudioData = false;
							 | 
						|
								
							 | 
						|
								                    // 通知父组件音频状态变化
							 | 
						|
								                    this.$emit('audio-state-change', {
							 | 
						|
								                        hasAudioData: false,
							 | 
						|
								                        isLoading: false,
							 | 
						|
								                        currentHighlightIndex: -1
							 | 
						|
								                    });
							 | 
						|
								
							 | 
						|
								                    uni.showToast({
							 | 
						|
								                        title: '页面数据加载中,请稍后重试',
							 | 
						|
								                        icon: 'none',
							 | 
						|
								                        duration: 2000
							 | 
						|
								                    });
							 | 
						|
								                    return;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                if (currentPageData) {
							 | 
						|
								                    // 收集所有text类型的元素
							 | 
						|
								                    const textItems = currentPageData.filter(item => item.type === 'text');
							 | 
						|
								                    console.log(`🎵 getCurrentPageAudio: 找到${textItems.length}个文本项:`, textItems.map(item => item.content?.substring(0, 50) + '...'));
							 | 
						|
								
							 | 
						|
								                    if (textItems.length > 0) {
							 | 
						|
								                        let firstAudioPlayed = false; // 标记是否已播放第一个音频
							 | 
						|
								                        let loadedAudiosCount = 0; // 已加载的音频数量
							 | 
						|
								
							 | 
						|
								                        // 逐个处理文本项,支持长文本分割
							 | 
						|
								                        for (let index = 0; index < textItems.length; index++) {
							 | 
						|
								                            const item = textItems[index];
							 | 
						|
								
							 | 
						|
								                            try {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                                // 使用分批次请求音频
							 | 
						|
								
							 | 
						|
								                                const batchResult = await this.requestAudioInBatches(item.content, this.localVoiceId);
							 | 
						|
								
							 | 
						|
								                                // 检查请求是否被取消
							 | 
						|
								                                if (batchResult === null) {
							 | 
						|
								
							 | 
						|
								                                    return;
							 | 
						|
								                                }
							 | 
						|
								
							 | 
						|
								                                if (batchResult.audioSegments.length > 0) {
							 | 
						|
								                                    // 同时保存到原始数据中以保持兼容性(使用第一段的URL)
							 | 
						|
								                                    const firstValidSegment = batchResult.audioSegments.find(seg => !seg.error);
							 | 
						|
								                                    if (firstValidSegment) {
							 | 
						|
								                                        item.audioUrl = firstValidSegment.url;
							 | 
						|
								                                    }
							 | 
						|
								
							 | 
						|
								                                    // 将所有音频段添加到音频数组
							 | 
						|
								                                    for (const segment of batchResult.audioSegments) {
							 | 
						|
								                                        if (!segment.error) {
							 | 
						|
								                                            const audioData = {
							 | 
						|
								                                                isLead : item.isLead,
							 | 
						|
								                                                url: segment.url,
							 | 
						|
								                                                text: segment.text,
							 | 
						|
								                                                duration: segment.duration,
							 | 
						|
								                                                startIndex: segment.startIndex,
							 | 
						|
								                                                endIndex: segment.endIndex,
							 | 
						|
								                                                segmentIndex: segment.segmentIndex,
							 | 
						|
								                                                originalTextIndex: index, // 标记属于哪个原始文本项
							 | 
						|
								                                                isSegmented: batchResult.audioSegments.length > 1 // 标记是否为分段音频
							 | 
						|
								                                            };
							 | 
						|
								                                            this.currentPageAudios.push(audioData);
							 | 
						|
								                                            loadedAudiosCount++;
							 | 
						|
								                                        }
							 | 
						|
								                                    }
							 | 
						|
								
							 | 
						|
								                                    // 如果是第一个音频,立即开始播放
							 | 
						|
								                                    if (!firstAudioPlayed && this.currentPageAudios.length > 0) {
							 | 
						|
								                                        firstAudioPlayed = true;
							 | 
						|
								                                        this.hasAudioData = true;
							 | 
						|
								                                        
							 | 
						|
								                                        // 初始化音频索引为第一个非导语音频
							 | 
						|
								                                        const firstNonLeadIndex = this.findFirstNonLeadAudio();
							 | 
						|
								                                        this.currentAudioIndex = firstNonLeadIndex >= 0 ? firstNonLeadIndex : 0;
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                                        // 通知父组件有音频数据了,但仍在加载中
							 | 
						|
								                                        this.$emit('audio-state-change', {
							 | 
						|
								                                            hasAudioData: this.hasAudioData,
							 | 
						|
								                                            isLoading: this.isAudioLoading, // 保持加载状态
							 | 
						|
								                                            currentHighlightIndex: this.currentHighlightIndex
							 | 
						|
								                                        });
							 | 
						|
								
							 | 
						|
								                                        // 立即使用audioManager播放第一个非导语音频
							 | 
						|
								                                        if (autoPlay || !this.isVoiceChanging) {
							 | 
						|
								                                            // 查找第一个非导语音频
							 | 
						|
								                                            const firstNonLeadIndex = this.findFirstNonLeadAudio();
							 | 
						|
								                                            if (firstNonLeadIndex >= 0 && firstNonLeadIndex < this.currentPageAudios.length) {
							 | 
						|
								                                                // 设置当前音频索引为第一个非导语音频
							 | 
						|
								                                                this.currentAudioIndex = firstNonLeadIndex;
							 | 
						|
								                                                const firstAudioData = this.currentPageAudios[firstNonLeadIndex];
							 | 
						|
								                                                
							 | 
						|
								                                                console.log(`🎵 getCurrentPageAudio 自动播放(跳过导语): 索引=${firstNonLeadIndex}, isLead=${firstAudioData.isLead}`);
							 | 
						|
								                                                audioManager.playAudio(firstAudioData.url, 'sentence', { playbackRate: this.playSpeed });
							 | 
						|
								                                                this.isPlaying = true;
							 | 
						|
								                                                this.updateHighlightIndex();
							 | 
						|
								                                            }
							 | 
						|
								                                        }
							 | 
						|
								                                    }
							 | 
						|
								
							 | 
						|
								                                    console.log(`文本项 ${index + 1} 处理完成,获得 ${batchResult.audioSegments.filter(s => !s.error).length} 个音频段`);
							 | 
						|
								                                } else {
							 | 
						|
								                                    console.error(`文本项 ${index + 1} 音频请求全部失败`);
							 | 
						|
								                                }
							 | 
						|
								                            } catch (error) {
							 | 
						|
								                                console.error(`文本项 ${index + 1} 处理异常:`, error);
							 | 
						|
								                            }
							 | 
						|
								                        }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                        // 如果有音频,重新计算精确的总时长
							 | 
						|
								                        if (this.currentPageAudios.length > 0) {
							 | 
						|
								                            await this.calculateTotalDuration();
							 | 
						|
								
							 | 
						|
								                            // 将音频数据保存到缓存中
							 | 
						|
								                            const cacheKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								                            this.audioCache[cacheKey] = {
							 | 
						|
								                                audios: [...this.currentPageAudios], // 深拷贝音频数组
							 | 
						|
								                                totalDuration: this.totalTime,
							 | 
						|
								                                voiceId: this.localVoiceId, // 保存音色ID用于验证
							 | 
						|
								                                timestamp: Date.now() // 保存时间戳
							 | 
						|
								                            };
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                            // 限制缓存大小
							 | 
						|
								                            this.limitCacheSize(1000);
							 | 
						|
								                        }
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 结束加载状态
							 | 
						|
								                this.isAudioLoading = false;
							 | 
						|
								                this.isVoiceChanging = false; // 清除音色切换加载状态
							 | 
						|
								
							 | 
						|
								                // 如果是课程切换后的自动加载,清除切换标识
							 | 
						|
								                if (this.isJustSwitchedCourse) {
							 | 
						|
								                    this.isJustSwitchedCourse = false;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 设置音频数据状态和失败状态
							 | 
						|
								                this.hasAudioData = this.currentPageAudios.length > 0;
							 | 
						|
								                this.audioLoadFailed = !this.hasAudioData && this.shouldLoadAudio; // 如果需要音频但没有音频数据,则认为获取失败
							 | 
						|
								
							 | 
						|
								                // 通知父组件音频状态变化
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: this.hasAudioData,
							 | 
						|
								                    isLoading: this.isAudioLoading,
							 | 
						|
								                    audioLoadFailed: this.audioLoadFailed,
							 | 
						|
								                    currentHighlightIndex: this.currentHighlightIndex
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('getCurrentPageAudio 方法执行异常:', error);
							 | 
						|
								
							 | 
						|
								                // 确保在异常情况下重置加载状态
							 | 
						|
								                this.isAudioLoading = false;
							 | 
						|
								                this.isVoiceChanging = false;
							 | 
						|
								                this.audioLoadFailed = true;
							 | 
						|
								                this.hasAudioData = false;
							 | 
						|
								
							 | 
						|
								                // 通知父组件音频加载失败
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: false,
							 | 
						|
								                    isLoading: false,
							 | 
						|
								                    audioLoadFailed: true,
							 | 
						|
								                    currentHighlightIndex: this.currentHighlightIndex
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                // 显示错误提示
							 | 
						|
								                uni.showToast({
							 | 
						|
								                    title: '音频加载失败,请重试',
							 | 
						|
								                    icon: 'none',
							 | 
						|
								                    duration: 2000
							 | 
						|
								                });
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 重新获取音频
							 | 
						|
								        retryGetAudio() {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 检查是否需要加载音频
							 | 
						|
								            if (!this.shouldLoadAudio) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 重置失败状态
							 | 
						|
								            this.audioLoadFailed = false;
							 | 
						|
								            // 清除当前页面的音频缓存
							 | 
						|
								            const pageKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								            if (this.audioCache[pageKey]) {
							 | 
						|
								                delete this.audioCache[pageKey];
							 | 
						|
								
							 | 
						|
								            }
							 | 
						|
								            // 重新获取音频
							 | 
						|
								            this.getCurrentPageAudio();
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 重置音频状态
							 | 
						|
								        resetAudioState() {
							 | 
						|
								            // 取消当前正在进行的音频请求
							 | 
						|
								            this.shouldCancelRequest = true;
							 | 
						|
								
							 | 
						|
								            // 使用audioManager停止当前音频
							 | 
						|
								            audioManager.stopCurrentAudio();
							 | 
						|
								            this.currentAudio = null;
							 | 
						|
								
							 | 
						|
								            // 重置播放状态
							 | 
						|
								            this.currentAudioIndex = 0;
							 | 
						|
								            this.isPlaying = false;
							 | 
						|
								            this.currentTime = 0;
							 | 
						|
								            this.totalTime = 0;
							 | 
						|
								            this.sliderValue = 0;
							 | 
						|
								            this.isAudioLoading = false;
							 | 
						|
								            this.audioLoadFailed = false;
							 | 
						|
								            this.currentHighlightIndex = -1;
							 | 
						|
								            this.playSpeed = 1.0;
							 | 
						|
								
							 | 
						|
								            // 页面切换时,始终清空当前音频数据,避免数据错乱
							 | 
						|
								            // 音频数据的加载由checkAndLoadPreloadedAudio方法统一处理
							 | 
						|
								            this.currentPageAudios = [];
							 | 
						|
								            this.totalTime = 0;
							 | 
						|
								            this.hasAudioData = false;
							 | 
						|
								
							 | 
						|
								            // 通知父组件音频状态变化
							 | 
						|
								            this.$emit('audio-state-change', {
							 | 
						|
								                hasAudioData: false,
							 | 
						|
								                isLoading: false,
							 | 
						|
								                currentHighlightIndex: -1
							 | 
						|
								            });
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 加载缓存的音频数据并显示播放控制栏
							 | 
						|
								        loadCachedAudioData() {
							 | 
						|
								            const cacheKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								            const cachedData = this.audioCache[cacheKey];
							 | 
						|
								
							 | 
						|
								            // 严格验证缓存数据
							 | 
						|
								            if (!cachedData || !cachedData.audios || cachedData.audios.length === 0) {
							 | 
						|
								                console.warn('缓存数据不存在或为空:', cacheKey);
							 | 
						|
								                uni.showToast({
							 | 
						|
								                    title: '缓存音频数据不存在',
							 | 
						|
								                    icon: 'none'
							 | 
						|
								                });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查音色ID是否匹配
							 | 
						|
								            if (cachedData.voiceId && cachedData.voiceId !== this.localVoiceId) {
							 | 
						|
								                console.warn('缓存音色不匹配:', cachedData.voiceId, '!=', this.localVoiceId);
							 | 
						|
								                // uni.showToast({
							 | 
						|
								                //     title: '音色已切换,请重新获取音频',
							 | 
						|
								                //     icon: 'none'
							 | 
						|
								                // });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查音频URL是否有效
							 | 
						|
								            const firstAudio = cachedData.audios[0];
							 | 
						|
								            if (!firstAudio || !firstAudio.url) {
							 | 
						|
								                console.warn('缓存音频URL无效');
							 | 
						|
								                uni.showToast({
							 | 
						|
								                    title: '缓存音频数据损坏',
							 | 
						|
								                    icon: 'none'
							 | 
						|
								                });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 从缓存加载音频数据
							 | 
						|
								            this.currentPageAudios = cachedData.audios;
							 | 
						|
								            this.totalTime = cachedData.totalDuration || 0;
							 | 
						|
								            this.currentAudioIndex = 0;
							 | 
						|
								            this.isPlaying = false;
							 | 
						|
								            this.currentTime = 0;
							 | 
						|
								            this.hasAudioData = true;
							 | 
						|
								            this.isAudioLoading = false;
							 | 
						|
								            this.audioLoadFailed = false;
							 | 
						|
								            this.currentHighlightIndex = -1;
							 | 
						|
								
							 | 
						|
								            // 通知父组件音频状态变化
							 | 
						|
								            this.$emit('audio-state-change', {
							 | 
						|
								                hasAudioData: this.hasAudioData,
							 | 
						|
								                isLoading: this.isAudioLoading,
							 | 
						|
								                currentHighlightIndex: this.currentHighlightIndex
							 | 
						|
								            });
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 手动获取音频
							 | 
						|
								        async handleGetAudio() {
							 | 
						|
								            // 检查会员限制
							 | 
						|
								            if (this.isAudioDisabled) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查是否有音色ID
							 | 
						|
								            if (!this.localVoiceId) {
							 | 
						|
								                // uni.showToast({
							 | 
						|
								                //     title: '音色未加载,请稍后重试',
							 | 
						|
								                //     icon: 'none'
							 | 
						|
								                // });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查当前页面是否支持音频播放
							 | 
						|
								            if (!this.shouldLoadAudio) {
							 | 
						|
								                uni.showToast({
							 | 
						|
								                    title: '当前页面不支持音频播放',
							 | 
						|
								                    icon: 'none'
							 | 
						|
								                });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查是否正在加载
							 | 
						|
								            if (this.isAudioLoading) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 调用获取音频方法
							 | 
						|
								            await this.getCurrentPageAudio();
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 计算音频总时长
							 | 
						|
								        async calculateTotalDuration() {
							 | 
						|
								            let totalDuration = 0;
							 | 
						|
								            for (let i = 0; i < this.currentPageAudios.length; i++) {
							 | 
						|
								                const audio = this.currentPageAudios[i];
							 | 
						|
								
							 | 
						|
								                // 使用API返回的准确时长信息
							 | 
						|
								                if (audio.duration && audio.duration > 0) {
							 | 
						|
								
							 | 
						|
								                    totalDuration += audio.duration;
							 | 
						|
								                } else {
							 | 
						|
								                    // 如果没有时长信息,使用文字长度估算(备用方案)
							 | 
						|
								                    const textLength = audio.text.length;
							 | 
						|
								                    // 假设较快语速每分钟约300个字符,即每秒约5个字符
							 | 
						|
								                    const estimatedDuration = Math.max(1, textLength / 5);
							 | 
						|
								                    audio.duration = estimatedDuration;
							 | 
						|
								                    totalDuration += estimatedDuration;
							 | 
						|
								                    console.log(`备用估算音频时长 ${i + 1}:`, estimatedDuration, '秒 (文字长度:', textLength, ')');
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								            this.totalTime = totalDuration;
							 | 
						|
								
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 获取音频时长
							 | 
						|
								        getAudioDuration(audioUrl) {
							 | 
						|
								            return new Promise((resolve, reject) => {
							 | 
						|
								                const audio = uni.createInnerAudioContext();
							 | 
						|
								                audio.src = audioUrl;
							 | 
						|
								
							 | 
						|
								                let resolved = false;
							 | 
						|
								
							 | 
						|
								                // 监听音频加载完成事件
							 | 
						|
								                audio.onCanplay(() => {
							 | 
						|
								
							 | 
						|
								                    if (!resolved && audio.duration && audio.duration > 0) {
							 | 
						|
								                        resolved = true;
							 | 
						|
								                        resolve(audio.duration);
							 | 
						|
								                        audio.destroy();
							 | 
						|
								                    }
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                // 监听音频元数据加载完成事件
							 | 
						|
								                audio.onLoadedmetadata = () => {
							 | 
						|
								
							 | 
						|
								                    if (!resolved && audio.duration && audio.duration > 0) {
							 | 
						|
								                        resolved = true;
							 | 
						|
								                        resolve(audio.duration);
							 | 
						|
								                        audio.destroy();
							 | 
						|
								                    }
							 | 
						|
								                };
							 | 
						|
								
							 | 
						|
								                // 监听音频时长更新事件
							 | 
						|
								                audio.onDurationChange = () => {
							 | 
						|
								
							 | 
						|
								                    if (!resolved && audio.duration && audio.duration > 0) {
							 | 
						|
								                        resolved = true;
							 | 
						|
								                        resolve(audio.duration);
							 | 
						|
								                        audio.destroy();
							 | 
						|
								                    }
							 | 
						|
								                };
							 | 
						|
								
							 | 
						|
								                // 移除onPlay監聽器,避免意外播放
							 | 
						|
								
							 | 
						|
								                audio.onError((error) => {
							 | 
						|
								                    console.error('音频加载失败:', error);
							 | 
						|
								                    if (!resolved) {
							 | 
						|
								                        resolved = true;
							 | 
						|
								                        reject(error);
							 | 
						|
								                        audio.destroy();
							 | 
						|
								                    }
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                // 設置較長的超時時間,但不播放音頻
							 | 
						|
								                setTimeout(() => {
							 | 
						|
								                    if (!resolved) {
							 | 
						|
								
							 | 
						|
								                        resolved = true;
							 | 
						|
								                        reject(new Error('無法獲取音頻時長'));
							 | 
						|
								                        audio.destroy();
							 | 
						|
								                    }
							 | 
						|
								                }, 1000);
							 | 
						|
								
							 | 
						|
								                // 最終超時處理
							 | 
						|
								                setTimeout(() => {
							 | 
						|
								                    if (!resolved) {
							 | 
						|
								                        console.warn('獲取音頻時長超時,使用默認值');
							 | 
						|
								                        resolved = true;
							 | 
						|
								                        reject(new Error('获取音频时长超时'));
							 | 
						|
								                        audio.destroy();
							 | 
						|
								                    }
							 | 
						|
								                }, 5000);
							 | 
						|
								            });
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 音频控制方法
							 | 
						|
								        togglePlay() {
							 | 
						|
								            // 检查会员限制
							 | 
						|
								            if (this.isAudioDisabled) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            if (this.currentPageAudios.length === 0) {
							 | 
						|
								                uni.showToast({
							 | 
						|
								                    title: '当前页面没有音频内容',
							 | 
						|
								                    icon: 'none'
							 | 
						|
								                });
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            if (this.isPlaying) {
							 | 
						|
								                this.pauseAudio();
							 | 
						|
								            } else {
							 | 
						|
								                this.playAudio();
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 播放音频
							 | 
						|
								        async playAudio() {
							 | 
						|
								            // 检查会员限制
							 | 
						|
								            if (this.isAudioDisabled) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查音频数据有效性
							 | 
						|
								            if (!this.currentPageAudios || this.currentPageAudios.length === 0) {
							 | 
						|
								                console.warn('🎵 playAudio: 没有音频数据');
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 如果当前索引无效,重置为第一个非导语音频
							 | 
						|
								            if (this.currentAudioIndex < 0 || this.currentAudioIndex >= this.currentPageAudios.length) {
							 | 
						|
								                console.log('🎵 playAudio: 音频索引无效,重置为第一个非导语音频');
							 | 
						|
								                this.currentAudioIndex = this.findFirstNonLeadAudio();
							 | 
						|
								                if (this.currentAudioIndex < 0) {
							 | 
						|
								                    console.error('🎵 playAudio: 找不到有效的音频');
							 | 
						|
								                    return;
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            let currentAudioData = this.currentPageAudios[this.currentAudioIndex];
							 | 
						|
								            
							 | 
						|
								            // 如果当前音频是导语,跳转到下一个非导语音频
							 | 
						|
								            if (currentAudioData && currentAudioData.isLead) {
							 | 
						|
								                console.log(`🎵 playAudio: 当前音频是导语(索引=${this.currentAudioIndex}),查找下一个非导语音频`);
							 | 
						|
								                
							 | 
						|
								                // 从当前索引开始查找下一个非导语音频
							 | 
						|
								                let nextNonLeadIndex = -1;
							 | 
						|
								                for (let i = this.currentAudioIndex; i < this.currentPageAudios.length; i++) {
							 | 
						|
								                    const audioData = this.currentPageAudios[i];
							 | 
						|
								                    if (audioData && !audioData.isLead) {
							 | 
						|
								                        nextNonLeadIndex = i;
							 | 
						|
								                        break;
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								                
							 | 
						|
								                if (nextNonLeadIndex >= 0) {
							 | 
						|
								                    this.currentAudioIndex = nextNonLeadIndex;
							 | 
						|
								                    currentAudioData = this.currentPageAudios[this.currentAudioIndex];
							 | 
						|
								                    console.log(`🎵 playAudio: 跳转到非导语音频,新索引=${this.currentAudioIndex}, isLead=${currentAudioData.isLead}`);
							 | 
						|
								                } else {
							 | 
						|
								                    console.warn('🎵 playAudio: 没有找到非导语音频,播放当前音频');
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            if (!currentAudioData || !currentAudioData.url) {
							 | 
						|
								                console.error('🎵 playAudio: 音频数据无效', currentAudioData);
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查音频数据是否属于当前页面
							 | 
						|
								            const audioCacheKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								            const currentPageCache = this.audioCache[audioCacheKey];
							 | 
						|
								
							 | 
						|
								            if (!currentPageCache || !currentPageCache.audios.includes(currentAudioData)) {
							 | 
						|
								                console.error('🎵 playAudio: 音频数据与当前页面不匹配,停止播放');
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            try {
							 | 
						|
								                console.log(`🎵 playAudio: 播放音频,索引=${this.currentAudioIndex}, isLead=${currentAudioData.isLead}`);
							 | 
						|
								                
							 | 
						|
								                // 使用audioManager播放句子音频,应用全局语速设置
							 | 
						|
								                await audioManager.playAudio(currentAudioData.url, 'sentence', {
							 | 
						|
								                    playbackRate: audioManager.getGlobalPlaybackRate()
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                // 更新高亮索引
							 | 
						|
								                this.updateHighlightIndex();
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('🎵 播放音频失败:', error);
							 | 
						|
								                uni.showToast({
							 | 
						|
								                    title: '音频播放失败',
							 | 
						|
								                    icon: 'none'
							 | 
						|
								                });
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 暂停音频
							 | 
						|
								        pauseAudio() {
							 | 
						|
								            audioManager.pause();
							 | 
						|
								            this.isPlaying = false;
							 | 
						|
								            // 暂停时清除高亮
							 | 
						|
								            this.currentHighlightIndex = -1;
							 | 
						|
								            // 通知父组件高亮状态变化
							 | 
						|
								            this.emitHighlightChange(-1);
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 文本标准化函数 - 移除多余空格、标点符号等
							 | 
						|
								        normalizeText(text) {
							 | 
						|
								            if (!text || typeof text !== 'string') return '';
							 | 
						|
								
							 | 
						|
								            return text
							 | 
						|
								                .trim()
							 | 
						|
								                .replace(/\s+/g, ' ')  // 将多个空格替换为单个空格
							 | 
						|
								                .replace(/[,。!?;:""''()【】《》]/g, '')  // 移除中文标点
							 | 
						|
								                .replace(/[,.!?;:"'()\[\]<>]/g, '')  // 移除英文标点
							 | 
						|
								                .toLowerCase();  // 转为小写(对英文有效)
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 备用方案:使用 TTS API 实时生成并播放音频
							 | 
						|
								        // async playTextWithTTS(textContent) {
							 | 
						|
								        //   try {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								        //     // 停止当前播放的音频
							 | 
						|
								        //     if (this.currentAudio) {
							 | 
						|
								        //       this.currentAudio.pause();
							 | 
						|
								        //       this.currentAudio.destroy();
							 | 
						|
								        //       this.currentAudio = null;
							 | 
						|
								        //     }
							 | 
						|
								
							 | 
						|
								        //     // 显示加载提示
							 | 
						|
								        //     uni.showLoading({
							 | 
						|
								        //       title: '正在生成音频...'
							 | 
						|
								        //     });
							 | 
						|
								
							 | 
						|
								        //     // 调用 TTS API
							 | 
						|
								        //     const audioRes = await this.$api.music.textToVoice({
							 | 
						|
								        //       text: textContent,
							 | 
						|
								        //       voiceType: this.voiceId || 1 // 使用当前语音类型,默认为1
							 | 
						|
								        //     });
							 | 
						|
								
							 | 
						|
								        //     uni.hideLoading();
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								        //     if (audioRes && audioRes.result && audioRes.result.url) {
							 | 
						|
								        //       const audioUrl = audioRes.result.url;
							 | 
						|
								
							 | 
						|
								        //       // 创建并播放音频
							 | 
						|
								        //       const audio = uni.createInnerAudioContext();
							 | 
						|
								        //       audio.src = audioUrl;
							 | 
						|
								
							 | 
						|
								        //       audio.onPlay(() => {
							 | 
						|
								
							 | 
						|
								        //         this.isPlaying = true;
							 | 
						|
								        //       });
							 | 
						|
								
							 | 
						|
								        //       audio.onEnded(() => {
							 | 
						|
								
							 | 
						|
								        //         this.isPlaying = false;
							 | 
						|
								        //         audio.destroy();
							 | 
						|
								        //         if (this.currentAudio === audio) {
							 | 
						|
								        //           this.currentAudio = null;
							 | 
						|
								        //         }
							 | 
						|
								        //       });
							 | 
						|
								
							 | 
						|
								        //       audio.onError((error) => {
							 | 
						|
								        //         console.error('🔊 TTS 音频播放失败:', error);
							 | 
						|
								        //         this.isPlaying = false;
							 | 
						|
								        //         audio.destroy();
							 | 
						|
								        //         if (this.currentAudio === audio) {
							 | 
						|
								        //           this.currentAudio = null;
							 | 
						|
								        //         }
							 | 
						|
								        //         uni.showToast({
							 | 
						|
								        //           title: '音频播放失败',
							 | 
						|
								        //           icon: 'none'
							 | 
						|
								        //         });
							 | 
						|
								        //       });
							 | 
						|
								
							 | 
						|
								        //       // 保存当前音频实例并播放
							 | 
						|
								        //       this.currentAudio = audio;
							 | 
						|
								        //       audio.play();
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								        //       return true;
							 | 
						|
								        //     } else {
							 | 
						|
								        //       console.error('❌ TTS API 请求失败:', audioRes);
							 | 
						|
								        //       uni.showToast({
							 | 
						|
								        //         title: '音频生成失败',
							 | 
						|
								        //         icon: 'none'
							 | 
						|
								        //       });
							 | 
						|
								        //       return false;
							 | 
						|
								        //     }
							 | 
						|
								        //   } catch (error) {
							 | 
						|
								        //     uni.hideLoading();
							 | 
						|
								        //     console.error('❌ TTS 音频生成异常:', error);
							 | 
						|
								        //     uni.showToast({
							 | 
						|
								        //       title: '音频生成失败',
							 | 
						|
								        //       icon: 'none'
							 | 
						|
								        //     });
							 | 
						|
								        //     return false;
							 | 
						|
								        //   }
							 | 
						|
								        // },
							 | 
						|
								
							 | 
						|
								        // 播放指定的音频段落(通过文本内容匹配)
							 | 
						|
								        playSpecificAudio(textContent) {
							 | 
						|
								
							 | 
						|
								            // 检查textContent是否有效
							 | 
						|
								            if (!textContent || typeof textContent !== 'string') {
							 | 
						|
								                console.error('❌ 无效的文本内容:', textContent);
							 | 
						|
								                uni.showToast({
							 | 
						|
								                    title: '无效的文本内容',
							 | 
						|
								                    icon: 'none'
							 | 
						|
								                });
							 | 
						|
								                return false;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查音频数据是否已加载
							 | 
						|
								            if (this.currentPageAudios.length === 0) {
							 | 
						|
								                console.warn('⚠️ 当前页面音频数据为空,可能还在加载中');
							 | 
						|
								                uni.showToast({
							 | 
						|
								                    title: '音频正在加载中,请稍后再试',
							 | 
						|
								                    icon: 'none'
							 | 
						|
								                });
							 | 
						|
								                return false;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 标准化目标文本
							 | 
						|
								            const normalizedTarget = this.normalizeText(textContent);
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 打印所有音频文本用于调试
							 | 
						|
								
							 | 
						|
								            this.currentPageAudios.forEach((audio, index) => {
							 | 
						|
								
							 | 
						|
								                console.log(`  [${index}] 标准化文本: "${this.normalizeText(audio.text)}"`);
							 | 
						|
								                if (audio.originalText) {
							 | 
						|
								
							 | 
						|
								                }
							 | 
						|
								            });
							 | 
						|
								
							 | 
						|
								            let audioIndex = -1;
							 | 
						|
								
							 | 
						|
								            // 第一步:精确匹配(标准化后)
							 | 
						|
								            audioIndex = this.currentPageAudios.findIndex(audio => {
							 | 
						|
								                if (!audio.text) return false;
							 | 
						|
								                const normalizedAudio = this.normalizeText(audio.text);
							 | 
						|
								                return normalizedAudio === normalizedTarget;
							 | 
						|
								            });
							 | 
						|
								
							 | 
						|
								            if (audioIndex !== -1) {
							 | 
						|
								
							 | 
						|
								            } else {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                // 第二步:包含匹配
							 | 
						|
								                audioIndex = this.currentPageAudios.findIndex(audio => {
							 | 
						|
								                    if (!audio.text) return false;
							 | 
						|
								                    const normalizedAudio = this.normalizeText(audio.text);
							 | 
						|
								
							 | 
						|
								                    // 双向包含检查
							 | 
						|
								                    return normalizedAudio.includes(normalizedTarget) || normalizedTarget.includes(normalizedAudio);
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                if (audioIndex !== -1) {
							 | 
						|
								
							 | 
						|
								                } else {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                    // 第三步:分段音频匹配
							 | 
						|
								                    audioIndex = this.currentPageAudios.findIndex(audio => {
							 | 
						|
								                        if (!audio.text) return false;
							 | 
						|
								
							 | 
						|
								                        // 检查是否为分段音频,且原始文本匹配
							 | 
						|
								                        if (audio.isSegmented && audio.originalText) {
							 | 
						|
								                            const normalizedOriginal = this.normalizeText(audio.originalText);
							 | 
						|
								                            return normalizedOriginal === normalizedTarget ||
							 | 
						|
								                                normalizedOriginal.includes(normalizedTarget) ||
							 | 
						|
								                                normalizedTarget.includes(normalizedOriginal);
							 | 
						|
								                        }
							 | 
						|
								
							 | 
						|
								                        return false;
							 | 
						|
								                    });
							 | 
						|
								
							 | 
						|
								                    if (audioIndex !== -1) {
							 | 
						|
								
							 | 
						|
								                    } else {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                        // 第四步:句子分割匹配(针对长句子)
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                        // 将目标句子按标点符号分割
							 | 
						|
								                        const targetSentences = normalizedTarget.split(/[,。!?;:,!?;:]/).filter(s => s.trim().length > 0);
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                        if (targetSentences.length > 1) {
							 | 
						|
								                            // 尝试匹配分割后的句子片段
							 | 
						|
								                            for (let i = 0; i < targetSentences.length; i++) {
							 | 
						|
								                                const sentence = targetSentences[i].trim();
							 | 
						|
								                                if (sentence.length < 3) continue; // 跳过太短的片段
							 | 
						|
								
							 | 
						|
								                                audioIndex = this.currentPageAudios.findIndex(audio => {
							 | 
						|
								                                    if (!audio.text) return false;
							 | 
						|
								                                    const normalizedAudio = this.normalizeText(audio.text);
							 | 
						|
								                                    return normalizedAudio.includes(sentence) || sentence.includes(normalizedAudio);
							 | 
						|
								                                });
							 | 
						|
								
							 | 
						|
								                                if (audioIndex !== -1) {
							 | 
						|
								
							 | 
						|
								                                    break;
							 | 
						|
								                                }
							 | 
						|
								                            }
							 | 
						|
								                        }
							 | 
						|
								
							 | 
						|
								                        if (audioIndex === -1) {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                            // 第五步:关键词匹配(提取关键词进行匹配)
							 | 
						|
								                            const keywords = normalizedTarget.split(/\s+/).filter(word => word.length > 2);
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                            let bestKeywordMatch = -1;
							 | 
						|
								                            let bestKeywordCount = 0;
							 | 
						|
								
							 | 
						|
								                            this.currentPageAudios.forEach((audio, index) => {
							 | 
						|
								                                if (!audio.text) return;
							 | 
						|
								                                const normalizedAudio = this.normalizeText(audio.text);
							 | 
						|
								
							 | 
						|
								                                // 计算匹配的关键词数量
							 | 
						|
								                                const matchedKeywords = keywords.filter(keyword => normalizedAudio.includes(keyword));
							 | 
						|
								                                const matchCount = matchedKeywords.length;
							 | 
						|
								
							 | 
						|
								                                if (matchCount > bestKeywordCount && matchCount >= Math.min(2, keywords.length)) {
							 | 
						|
								                                    bestKeywordCount = matchCount;
							 | 
						|
								                                    bestKeywordMatch = index;
							 | 
						|
								                                    console.log(`  [${index}] 关键词匹配: ${matchCount}/${keywords.length}, 匹配词: [${matchedKeywords.join(', ')}]`);
							 | 
						|
								                                }
							 | 
						|
								                            });
							 | 
						|
								
							 | 
						|
								                            if (bestKeywordMatch !== -1) {
							 | 
						|
								                                audioIndex = bestKeywordMatch;
							 | 
						|
								
							 | 
						|
								                            } else {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                                // 第六步:相似度匹配(最后的尝试)
							 | 
						|
								                                let bestMatch = -1;
							 | 
						|
								                                let bestSimilarity = 0;
							 | 
						|
								
							 | 
						|
								                                this.currentPageAudios.forEach((audio, index) => {
							 | 
						|
								                                    if (!audio.text) return;
							 | 
						|
								
							 | 
						|
								                                    const normalizedAudio = this.normalizeText(audio.text);
							 | 
						|
								
							 | 
						|
								                                    // 计算简单的相似度(共同字符数 / 较长文本长度)
							 | 
						|
								                                    const commonChars = [...normalizedTarget].filter(char => normalizedAudio.includes(char)).length;
							 | 
						|
								                                    const maxLength = Math.max(normalizedTarget.length, normalizedAudio.length);
							 | 
						|
								                                    const similarity = maxLength > 0 ? commonChars / maxLength : 0;
							 | 
						|
								
							 | 
						|
								                                    console.log(`  [${index}] 相似度: ${similarity.toFixed(2)}, 文本: "${audio.text}"`);
							 | 
						|
								
							 | 
						|
								                                    if (similarity > bestSimilarity && similarity > 0.5) { // 降低相似度阈值到50%
							 | 
						|
								                                        bestSimilarity = similarity;
							 | 
						|
								                                        bestMatch = index;
							 | 
						|
								                                    }
							 | 
						|
								                                });
							 | 
						|
								
							 | 
						|
								                                if (bestMatch !== -1) {
							 | 
						|
								                                    audioIndex = bestMatch;
							 | 
						|
								
							 | 
						|
								                                }
							 | 
						|
								                            }
							 | 
						|
								                        }
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            if (audioIndex !== -1) {
							 | 
						|
								                // 使用audioManager停止当前音频并播放新音频
							 | 
						|
								                audioManager.stopCurrentAudio();
							 | 
						|
								
							 | 
						|
								                // 设置新的音频索引
							 | 
						|
								                this.currentAudioIndex = audioIndex;
							 | 
						|
								
							 | 
						|
								                // 重置播放状态
							 | 
						|
								                this.isPlaying = false;
							 | 
						|
								                this.currentTime = 0;
							 | 
						|
								                this.sliderValue = 0;
							 | 
						|
								
							 | 
						|
								                // 更新高亮索引
							 | 
						|
								                this.currentHighlightIndex = audioIndex;
							 | 
						|
								                this.emitHighlightChange(audioIndex);
							 | 
						|
								
							 | 
						|
								                // 使用audioManager播放指定音频
							 | 
						|
								                const audioData = this.currentPageAudios[audioIndex];
							 | 
						|
								                audioManager.playAudio(audioData.url, 'sentence', { playbackRate: this.playSpeed });
							 | 
						|
								                this.isPlaying = true;
							 | 
						|
								
							 | 
						|
								                return true; // 成功找到并播放
							 | 
						|
								            } else {
							 | 
						|
								                console.error('❌ 未找到匹配的音频段落:', textContent);
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                // 最后的尝试:首字符匹配(针对划线重点等特殊情况)
							 | 
						|
								                if (normalizedTarget.length > 5) {
							 | 
						|
								                    const firstChars = normalizedTarget.substring(0, Math.min(10, normalizedTarget.length));
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                    audioIndex = this.currentPageAudios.findIndex(audio => {
							 | 
						|
								                        if (!audio.text) return false;
							 | 
						|
								                        const normalizedAudio = this.normalizeText(audio.text);
							 | 
						|
								                        return normalizedAudio.startsWith(firstChars) || firstChars.startsWith(normalizedAudio.substring(0, Math.min(10, normalizedAudio.length)));
							 | 
						|
								                    });
							 | 
						|
								
							 | 
						|
								                    if (audioIndex !== -1) {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                        // 使用audioManager停止当前音频并播放新音频
							 | 
						|
								                        audioManager.stopCurrentAudio();
							 | 
						|
								
							 | 
						|
								                        // 设置新的音频索引
							 | 
						|
								                        this.currentAudioIndex = audioIndex;
							 | 
						|
								
							 | 
						|
								                        // 重置播放状态
							 | 
						|
								                        this.isPlaying = false;
							 | 
						|
								                        this.currentTime = 0;
							 | 
						|
								                        this.sliderValue = 0;
							 | 
						|
								
							 | 
						|
								                        // 更新高亮索引
							 | 
						|
								                        this.currentHighlightIndex = audioIndex;
							 | 
						|
								                        this.emitHighlightChange(audioIndex);
							 | 
						|
								
							 | 
						|
								                        // 使用audioManager播放指定音频
							 | 
						|
								                        const audioData = this.currentPageAudios[audioIndex];
							 | 
						|
								                        audioManager.playAudio(audioData.url, 'sentence', { playbackRate: this.playSpeed });
							 | 
						|
								                        this.isPlaying = true;
							 | 
						|
								
							 | 
						|
								                        return true;
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                // 备用方案:当找不到匹配音频时,显示提示信息
							 | 
						|
								                console.warn('⚠️ 未找到匹配的音频段落,无法播放:', textContent);
							 | 
						|
								                this.$emit('showToast', '未找到对应的音频内容');
							 | 
						|
								                return false;
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 创建音频实例
							 | 
						|
								        // 更新当前播放时间
							 | 
						|
								        updateCurrentTime() {
							 | 
						|
								            // 使用audioManager获取当前播放时间
							 | 
						|
								            const currentTime = audioManager.getCurrentTime();
							 | 
						|
								            if (currentTime === null) return;
							 | 
						|
								
							 | 
						|
								            let totalTime = 0;
							 | 
						|
								            // 计算之前音频的总时长
							 | 
						|
								            for (let i = 0; i < this.currentAudioIndex; i++) {
							 | 
						|
								                totalTime += this.currentPageAudios[i].duration;
							 | 
						|
								            }
							 | 
						|
								            // 加上当前音频的播放时间
							 | 
						|
								            totalTime += currentTime;
							 | 
						|
								
							 | 
						|
								            this.currentTime = totalTime;
							 | 
						|
								
							 | 
						|
								            // 如果不是正在拖動滑動條,則同步更新滑動條的值
							 | 
						|
								            if (!this.isDragging) {
							 | 
						|
								                this.sliderValue = this.currentTime;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 更新当前高亮的文本索引
							 | 
						|
								            this.updateHighlightIndex();
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 更新高亮文本索引
							 | 
						|
								        updateHighlightIndex() {
							 | 
						|
								            if (!this.isPlaying || this.currentPageAudios.length === 0) {
							 | 
						|
								                this.currentHighlightIndex = -1;
							 | 
						|
								                this.emitHighlightChange(-1);
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查是否正在页面切换中,如果是则不更新高亮
							 | 
						|
								            if (this.isPageChanging) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 获取当前播放的音频数据
							 | 
						|
								            const currentAudio = this.currentPageAudios[this.currentAudioIndex];
							 | 
						|
								            if (!currentAudio) {
							 | 
						|
								                this.currentHighlightIndex = -1;
							 | 
						|
								                this.emitHighlightChange(-1);
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查音频数据是否属于当前页面,防止页面切换时的数据错乱
							 | 
						|
								            const audioCacheKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								            const currentPageCache = this.audioCache[audioCacheKey];
							 | 
						|
								
							 | 
						|
								            // 如果当前音频数据不属于当前页面,则不更新高亮
							 | 
						|
								            if (!currentPageCache || !currentPageCache.audios.includes(currentAudio)) {
							 | 
						|
								                console.warn('🎵 updateHighlightIndex: 音频数据与当前页面不匹配,跳过高亮更新');
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 如果是分段音频,需要计算正确的高亮索引
							 | 
						|
								            if (currentAudio.isSegmented && typeof currentAudio.originalTextIndex !== 'undefined') {
							 | 
						|
								                // 使用原始文本项的索引作为高亮索引
							 | 
						|
								                this.currentHighlightIndex = currentAudio.originalTextIndex;
							 | 
						|
								
							 | 
						|
								            } else {
							 | 
						|
								                // 非分段音频,使用音频索引
							 | 
						|
								                this.currentHighlightIndex = this.currentAudioIndex;
							 | 
						|
								
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 使用辅助方法发送高亮变化事件
							 | 
						|
								            this.emitHighlightChange(this.currentHighlightIndex);
							 | 
						|
								
							 | 
						|
								            // 发送滚动事件,让页面滚动到当前高亮的文本
							 | 
						|
								            this.emitScrollToText(this.currentHighlightIndex);
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 发送高亮变化事件的辅助方法
							 | 
						|
								        emitHighlightChange(highlightIndex = -1, audioData = null) {
							 | 
						|
								            if (highlightIndex === -1) {
							 | 
						|
								                // 清除高亮
							 | 
						|
								                this.$emit('highlight-change', -1);
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 获取当前播放的音频数据,优先使用传入的audioData
							 | 
						|
								            const currentAudioData = audioData || this.currentPageAudios[this.currentAudioIndex];
							 | 
						|
								            if (!currentAudioData) {
							 | 
						|
								                this.$emit('highlight-change', -1);
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            const highlightData = {
							 | 
						|
								                highlightIndex: currentAudioData.originalTextIndex !== undefined ? currentAudioData.originalTextIndex : highlightIndex,
							 | 
						|
								                isSegmented: currentAudioData.isSegmented || false,
							 | 
						|
								                segmentIndex: currentAudioData.segmentIndex || 0,
							 | 
						|
								                startIndex: currentAudioData.startIndex || 0,
							 | 
						|
								                endIndex: currentAudioData.endIndex || 0,
							 | 
						|
								                currentText: currentAudioData.text || ''
							 | 
						|
								            };
							 | 
						|
								
							 | 
						|
								            // 发送详细的高亮信息
							 | 
						|
								            this.$emit('highlight-change', highlightData);
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 发送滚动到文本事件的辅助方法
							 | 
						|
								        emitScrollToText(highlightIndex = -1, audioData = null) {
							 | 
						|
								            if (highlightIndex === -1) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 获取当前播放的音频数据,优先使用传入的audioData
							 | 
						|
								            const currentAudioData = audioData || this.currentPageAudios[this.currentAudioIndex];
							 | 
						|
								            if (!currentAudioData) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查音频数据是否属于当前页面,防止页面切换时的数据错乱
							 | 
						|
								            const audioCacheKey = `${this.courseId}_${this.currentPage}_${this.localVoiceId}`;
							 | 
						|
								            const currentPageCache = this.audioCache[audioCacheKey];
							 | 
						|
								
							 | 
						|
								            // 如果当前音频数据不属于当前页面,则不发送滚动事件
							 | 
						|
								            if (!currentPageCache || !currentPageCache.audios.includes(currentAudioData)) {
							 | 
						|
								                console.warn('🎵 emitScrollToText: 音频数据与当前页面不匹配,跳过滚动事件');
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            const scrollData = {
							 | 
						|
								                highlightIndex: currentAudioData.originalTextIndex !== undefined ? currentAudioData.originalTextIndex : highlightIndex,
							 | 
						|
								                isSegmented: currentAudioData.isSegmented || false,
							 | 
						|
								                segmentIndex: currentAudioData.segmentIndex || 0,
							 | 
						|
								                currentText: currentAudioData.text || '',
							 | 
						|
								                currentPage: this.currentPage
							 | 
						|
								            };
							 | 
						|
								
							 | 
						|
								            // 发送滚动事件
							 | 
						|
								            this.$emit('scroll-to-text', scrollData);
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 音频播放结束处理
							 | 
						|
								        onAudioEnded() {
							 | 
						|
								            // 防止多次触发,添加防抖机制
							 | 
						|
								            if (this.isProcessingEnded) {
							 | 
						|
								                console.log('🎵 onAudioEnded: 正在处理中,跳过重复调用');
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            this.isProcessingEnded = true;
							 | 
						|
								            console.log(`🎵 onAudioEnded: 当前索引=${this.currentAudioIndex}, 总音频数=${this.currentPageAudios.length}`);
							 | 
						|
								
							 | 
						|
								            // 添加延迟确保音频状态完全清理
							 | 
						|
								            setTimeout(() => {
							 | 
						|
								                try {
							 | 
						|
								                    // 检查音频数据有效性
							 | 
						|
								                    if (!this.currentPageAudios || this.currentPageAudios.length === 0) {
							 | 
						|
								                        console.warn('🎵 onAudioEnded: 没有音频数据');
							 | 
						|
								                        this.isProcessingEnded = false;
							 | 
						|
								                        return;
							 | 
						|
								                    }
							 | 
						|
								
							 | 
						|
								                    if (this.currentAudioIndex < this.currentPageAudios.length - 1) {
							 | 
						|
								                        // 还有下一个音频,继续播放
							 | 
						|
								                        let currentAudioData = this.currentPageAudios[this.currentAudioIndex];
							 | 
						|
								                        
							 | 
						|
								                        // 检查当前音频的 isLead 状态
							 | 
						|
								                        if (currentAudioData && !currentAudioData.isLead) {
							 | 
						|
								                            console.log('🎵 onAudioEnded: 当前音频 isLead=false,检查是否需要跳过 isLead=true 的音频');
							 | 
						|
								                            
							 | 
						|
								                            // 从当前索引开始,跳过所有 isLead=true 的音频
							 | 
						|
								                            let nextIndex = this.currentAudioIndex;
							 | 
						|
								                            while (nextIndex < (this.currentPageAudios.length - 1)) {
							 | 
						|
								                                const audioData = this.currentPageAudios[nextIndex + 1];
							 | 
						|
								                                if (audioData && audioData.isLead == true) {
							 | 
						|
								                                    console.log(`🎵 onAudioEnded: 跳过 isLead=true 的音频,索引=${nextIndex + 1}`);
							 | 
						|
								                                    nextIndex++;
							 | 
						|
								                                } else {
							 | 
						|
								                                    break;
							 | 
						|
								                                }
							 | 
						|
								                            }
							 | 
						|
								                            
							 | 
						|
								                            // 更新当前音频索引
							 | 
						|
								                            if (nextIndex !== this.currentAudioIndex) {
							 | 
						|
								                                this.currentAudioIndex = nextIndex;
							 | 
						|
								                                console.log(`🎵 onAudioEnded: 跳过后的新索引=${this.currentAudioIndex}`);
							 | 
						|
								                                
							 | 
						|
								                                // 检查新索引是否有效
							 | 
						|
								                                if (this.currentAudioIndex >= this.currentPageAudios.length - 1) {
							 | 
						|
								                                    console.log('🎵 onAudioEnded: 跳过后已到达音频列表末尾,进入播放完毕逻辑');
							 | 
						|
								                                    // 跳转到播放完毕的逻辑
							 | 
						|
								                                    this.handlePlaybackComplete();
							 | 
						|
								                                    return;
							 | 
						|
								                                }
							 | 
						|
								                            }
							 | 
						|
								                        }
							 | 
						|
								
							 | 
						|
								                        // 移动到下一个音频索引
							 | 
						|
								                        this.currentAudioIndex++;
							 | 
						|
								                        
							 | 
						|
								                        // 确保索引在有效范围内
							 | 
						|
								                        if (this.currentAudioIndex >= this.currentPageAudios.length) {
							 | 
						|
								                            console.log('🎵 onAudioEnded: 索引超出范围,进入播放完毕逻辑');
							 | 
						|
								                            this.handlePlaybackComplete();
							 | 
						|
								                            return;
							 | 
						|
								                        }
							 | 
						|
								
							 | 
						|
								                        console.log(`🎵 onAudioEnded: 准备播放下一个音频,索引=${this.currentAudioIndex}`);
							 | 
						|
								
							 | 
						|
								                        // 确保音频数据有效
							 | 
						|
								                        const nextAudio = this.currentPageAudios[this.currentAudioIndex];
							 | 
						|
								                        if (nextAudio && nextAudio.url) {
							 | 
						|
								                            this.playAudio();
							 | 
						|
								                        } else {
							 | 
						|
								                            console.error('🎵 onAudioEnded: 下一个音频数据无效', nextAudio);
							 | 
						|
								                            // 如果下一个音频无效,尝试播放再下一个
							 | 
						|
								                            this.findAndPlayNextValidAudio();
							 | 
						|
								                        }
							 | 
						|
								
							 | 
						|
								                    } else {
							 | 
						|
								                        // 所有音频播放完毕
							 | 
						|
								                        this.handlePlaybackComplete();
							 | 
						|
								                    }
							 | 
						|
								                } catch (error) {
							 | 
						|
								                    console.error('🎵 onAudioEnded: 处理过程中发生错误', error);
							 | 
						|
								                } finally {
							 | 
						|
								                    // 重置防抖标志
							 | 
						|
								                    this.isProcessingEnded = false;
							 | 
						|
								                }
							 | 
						|
								            }, 50); // 添加50ms延迟确保状态清理完成
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 处理播放完毕的逻辑
							 | 
						|
								        handlePlaybackComplete() {
							 | 
						|
								            console.log('🎵 handlePlaybackComplete: 所有音频播放完毕');
							 | 
						|
								            
							 | 
						|
								            if (this.isLoop) {
							 | 
						|
								                // 循环播放 - 跳过导语音频
							 | 
						|
								                console.log('🎵 handlePlaybackComplete: 循环播放,查找第一个非导语音频');
							 | 
						|
								                const firstNonLeadIndex = this.findFirstNonLeadAudio();
							 | 
						|
								                
							 | 
						|
								                if (firstNonLeadIndex >= 0 && firstNonLeadIndex < this.currentPageAudios.length) {
							 | 
						|
								                    this.currentAudioIndex = firstNonLeadIndex;
							 | 
						|
								                    const firstAudio = this.currentPageAudios[firstNonLeadIndex];
							 | 
						|
								                    
							 | 
						|
								                    if (firstAudio && firstAudio.url) {
							 | 
						|
								                        console.log(`🎵 handlePlaybackComplete: 循环播放从非导语音频开始,索引=${firstNonLeadIndex}, isLead=${firstAudio.isLead}`);
							 | 
						|
								                        this.playAudio();
							 | 
						|
								                    } else {
							 | 
						|
								                        console.error('🎵 handlePlaybackComplete: 第一个非导语音频数据无效,停止循环播放');
							 | 
						|
								                        this.stopPlayback();
							 | 
						|
								                    }
							 | 
						|
								                } else {
							 | 
						|
								                    console.error('🎵 handlePlaybackComplete: 找不到有效的非导语音频,停止循环播放');
							 | 
						|
								                    this.stopPlayback();
							 | 
						|
								                }
							 | 
						|
								            } else {
							 | 
						|
								                // 停止播放
							 | 
						|
								                this.stopPlayback();
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 停止播放的逻辑
							 | 
						|
								        stopPlayback() {
							 | 
						|
								            console.log('🎵 stopPlayback: 播放完毕,停止播放');
							 | 
						|
								            this.isPlaying = false;
							 | 
						|
								            this.currentTime = this.totalTime;
							 | 
						|
								            this.currentHighlightIndex = -1;
							 | 
						|
								            this.$emit('highlight-change', -1);
							 | 
						|
								            
							 | 
						|
								            // 通知父组件音频状态变化
							 | 
						|
								            this.$emit('audio-state-change', {
							 | 
						|
								                hasAudioData: this.hasAudioData,
							 | 
						|
								                isLoading: false,
							 | 
						|
								                currentHighlightIndex: -1
							 | 
						|
								            });
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 查找并播放下一个有效的音频
							 | 
						|
								        findAndPlayNextValidAudio() {
							 | 
						|
								            console.log('🎵 findAndPlayNextValidAudio: 查找下一个有效音频');
							 | 
						|
								            
							 | 
						|
								            // 从当前索引开始查找有效音频
							 | 
						|
								            for (let i = this.currentAudioIndex + 1; i < this.currentPageAudios.length; i++) {
							 | 
						|
								                const audio = this.currentPageAudios[i];
							 | 
						|
								                if (audio && audio.url) {
							 | 
						|
								                    console.log(`🎵 findAndPlayNextValidAudio: 找到有效音频,索引=${i}`);
							 | 
						|
								                    this.currentAudioIndex = i;
							 | 
						|
								                    this.playAudio();
							 | 
						|
								                    return;
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								            
							 | 
						|
								            // 没有找到有效音频,播放完毕
							 | 
						|
								            console.log('🎵 findAndPlayNextValidAudio: 没有找到有效音频,播放完毕');
							 | 
						|
								            this.handlePlaybackComplete();
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 滚动到当前播放音频对应的文字
							 | 
						|
								        // scrollToCurrentAudio() {
							 | 
						|
								        //   try {
							 | 
						|
								        //     // 获取当前播放的音频数据
							 | 
						|
								        //     const currentAudio = this.currentPageAudios[this.currentAudioIndex];
							 | 
						|
								        //     if (!currentAudio) {
							 | 
						|
								        //       console.log('🔍 scrollToCurrentAudio: 没有当前音频数据');
							 | 
						|
								        //       return;
							 | 
						|
								        //     }
							 | 
						|
								        //     
							 | 
						|
								        //     // 确定要滚动到的文字索引
							 | 
						|
								        //     let targetTextIndex = this.currentAudioIndex;
							 | 
						|
								        //     
							 | 
						|
								        //     // 如果是分段音频,使用原始文本索引
							 | 
						|
								        //     if (currentAudio.isSegmented && typeof currentAudio.originalTextIndex !== 'undefined') {
							 | 
						|
								        //       targetTextIndex = currentAudio.originalTextIndex;
							 | 
						|
								        //     }
							 | 
						|
								        //     
							 | 
						|
								        //     // 获取当前页面数据
							 | 
						|
								        //     const currentPageData = this.bookPages[this.currentPage - 1];
							 | 
						|
								        //     if (!currentPageData || !Array.isArray(currentPageData)) {
							 | 
						|
								        //       console.warn('⚠️ scrollToCurrentAudio: 无法获取当前页面数据');
							 | 
						|
								        //       return;
							 | 
						|
								        //     }
							 | 
						|
								        //     
							 | 
						|
								        //     // 判断目标索引位置的元素类型
							 | 
						|
								        //     const targetElement = currentPageData[targetTextIndex];
							 | 
						|
								        //     let refPrefix = 'textRef'; // 默认为文本
							 | 
						|
								        //     
							 | 
						|
								        //     if (targetElement && targetElement.type === 'image') {
							 | 
						|
								        //       refPrefix = 'imageRef';
							 | 
						|
								        //     }
							 | 
						|
								        //     
							 | 
						|
								        //     // 构建ref名称:根据元素类型使用不同前缀
							 | 
						|
								        //     const refName = `${refPrefix}_${this.currentPage - 1}_${targetTextIndex}`;
							 | 
						|
								        //     
							 | 
						|
								        //     console.log('🎯 scrollToCurrentAudio:', {
							 | 
						|
								        //       currentAudioIndex: this.currentAudioIndex,
							 | 
						|
								        //       targetTextIndex: targetTextIndex,
							 | 
						|
								        //       targetElementType: targetElement?.type || 'unknown',
							 | 
						|
								        //       refPrefix: refPrefix,
							 | 
						|
								        //       refName: refName,
							 | 
						|
								        //       isSegmented: currentAudio.isSegmented,
							 | 
						|
								        //       originalTextIndex: currentAudio.originalTextIndex,
							 | 
						|
								        //       audioText: currentAudio.text?.substring(0, 50) + '...'
							 | 
						|
								        //     });
							 | 
						|
								        //     
							 | 
						|
								        //     // 通过父组件调用scrollTo插件
							 | 
						|
								        //     this.$emit('scroll-to-text', refName);
							 | 
						|
								        //     
							 | 
						|
								        //   } catch (error) {
							 | 
						|
								        //     console.error('❌ scrollToCurrentAudio 执行失败:', error);
							 | 
						|
								        //   }
							 | 
						|
								        // },
							 | 
						|
								
							 | 
						|
								        toggleLoop() {
							 | 
						|
								            this.isLoop = !this.isLoop;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        toggleSpeed() {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 简化检测:只在极少数情况下阻止倍速切换
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 只有在明确禁用的情况下才阻止(比如Android 4.x)
							 | 
						|
								            if (!this.playbackRateSupported) {
							 | 
						|
								
							 | 
						|
								                // 不再直接返回,而是继续尝试
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            const currentIndex = this.speedOptions.indexOf(this.playSpeed);
							 | 
						|
								            const nextIndex = (currentIndex + 1) % this.speedOptions.length;
							 | 
						|
								            const oldSpeed = this.playSpeed;
							 | 
						|
								            this.playSpeed = this.speedOptions[nextIndex];
							 | 
						|
								
							 | 
						|
								            // 同步语速设置到audioManager
							 | 
						|
								            audioManager.setGlobalPlaybackRate(this.playSpeed);
							 | 
						|
								
							 | 
						|
								            console.log('⚡ 倍速切换详情:', {
							 | 
						|
								                可用选项: this.speedOptions,
							 | 
						|
								                当前索引: currentIndex,
							 | 
						|
								                下一个索引: nextIndex,
							 | 
						|
								                旧速度: oldSpeed + 'x',
							 | 
						|
								                新速度: this.playSpeed + 'x',
							 | 
						|
								                切换时间: new Date().toLocaleTimeString()
							 | 
						|
								            });
							 | 
						|
								
							 | 
						|
								            // 同步全局播放速度到audioManager
							 | 
						|
								            audioManager.setGlobalPlaybackRate(this.playSpeed);
							 | 
						|
								
							 | 
						|
								            // 显示速度变更提示
							 | 
						|
								            uni.showToast({
							 | 
						|
								                title: `🎵 播放速度: ${this.playSpeed}x`,
							 | 
						|
								                icon: 'none',
							 | 
						|
								                duration: 1000
							 | 
						|
								            });
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 滑動條值實時更新 (@input 事件)
							 | 
						|
								        onSliderInput(value) {
							 | 
						|
								            // 在拖動過程中實時更新顯示的時間,但不影響實際播放
							 | 
						|
								            if (this.isDragging) {
							 | 
						|
								                // 可以在這裡實時更新顯示時間,讓用戶看到拖動到的時間點
							 | 
						|
								                // 但不改變實際的 currentTime,避免影響播放邏輯
							 | 
						|
								
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 滑動條拖動過程中的處理 (@changing 事件)
							 | 
						|
								        onSliderChanging(value) {
							 | 
						|
								            // 第一次觸發 changing 事件時,暫停播放並標記為拖動狀態
							 | 
						|
								            if (!this.isDragging) {
							 | 
						|
								                if (this.isPlaying) {
							 | 
						|
								                    this.pauseAudio();
							 | 
						|
								
							 | 
						|
								                }
							 | 
						|
								                this.isDragging = true;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 更新滑動條的值,但不改變實際播放位置
							 | 
						|
								            this.sliderValue = value;
							 | 
						|
								
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 滑動條拖動結束的處理 (@change 事件)
							 | 
						|
								        onSliderChange(value) {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 如果不是拖動狀態(即單點),需要先暫停播放
							 | 
						|
								            if (!this.isDragging && this.isPlaying) {
							 | 
						|
								                this.pauseAudio();
							 | 
						|
								
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 重置拖動狀態
							 | 
						|
								            this.isDragging = false;
							 | 
						|
								            this.sliderValue = value;
							 | 
						|
								
							 | 
						|
								            // 跳轉到指定位置,但不自動恢復播放
							 | 
						|
								            this.seekToTime(value, false);
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 跳轉到指定時間
							 | 
						|
								        seekToTime(targetTime, shouldResume = false) {
							 | 
						|
								            if (!this.currentPageAudios || this.currentPageAudios.length === 0) {
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 確保目標時間在有效範圍內
							 | 
						|
								            targetTime = Math.max(0, Math.min(targetTime, this.totalTime));
							 | 
						|
								
							 | 
						|
								            let accumulatedTime = 0;
							 | 
						|
								            let targetAudioIndex = -1;
							 | 
						|
								            let targetAudioTime = 0;
							 | 
						|
								
							 | 
						|
								            // 找到目標時間對應的音頻片段
							 | 
						|
								            for (let i = 0; i < this.currentPageAudios.length; i++) {
							 | 
						|
								                const audioDuration = this.currentPageAudios[i].duration || 0;
							 | 
						|
								
							 | 
						|
								                if (targetTime >= accumulatedTime && targetTime <= accumulatedTime + audioDuration) {
							 | 
						|
								                    targetAudioIndex = i;
							 | 
						|
								                    targetAudioTime = targetTime - accumulatedTime;
							 | 
						|
								                    break;
							 | 
						|
								                }
							 | 
						|
								                accumulatedTime += audioDuration;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 如果沒有找到合適的音頻片段,使用最後一個
							 | 
						|
								            if (targetAudioIndex === -1 && this.currentPageAudios.length > 0) {
							 | 
						|
								                targetAudioIndex = this.currentPageAudios.length - 1;
							 | 
						|
								                targetAudioTime = this.currentPageAudios[targetAudioIndex].duration || 0;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            if (targetAudioIndex === -1) {
							 | 
						|
								                console.error('無法找到目標音頻片段');
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 如果需要切換到不同的音頻片段
							 | 
						|
								            if (targetAudioIndex !== this.currentAudioIndex) {
							 | 
						|
								                this.currentAudioIndex = targetAudioIndex;
							 | 
						|
								                // 使用audioManager播放指定音频并跳转到指定时间
							 | 
						|
								                const audioData = this.currentPageAudios[targetAudioIndex];
							 | 
						|
								                audioManager.playAudio(audioData.url, 'sentence', { playbackRate: this.playSpeed, startTime: targetAudioTime });
							 | 
						|
								                this.currentTime = targetTime;
							 | 
						|
								
							 | 
						|
								                if (shouldResume) {
							 | 
						|
								                    this.isPlaying = true;
							 | 
						|
								                } else {
							 | 
						|
								                    // 如果不需要恢复播放,则暂停
							 | 
						|
								                    audioManager.pause();
							 | 
						|
								                    this.isPlaying = false;
							 | 
						|
								                }
							 | 
						|
								            } else {
							 | 
						|
								                // 在當前音頻片段內跳轉
							 | 
						|
								                audioManager.seekTo(targetAudioTime);
							 | 
						|
								                this.currentTime = targetTime;
							 | 
						|
								
							 | 
						|
								                if (shouldResume) {
							 | 
						|
								                    audioManager.resume();
							 | 
						|
								                    this.isPlaying = true;
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 等待音頻實例準備就緒
							 | 
						|
								        waitForAudioReady(callback, maxAttempts = 10, currentAttempt = 0) {
							 | 
						|
								            if (currentAttempt >= maxAttempts) {
							 | 
						|
								                console.error('音頻實例準備超時');
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            if (this.currentAudio && this.currentAudio.src) {
							 | 
						|
								                // 音頻實例已準備好
							 | 
						|
								                setTimeout(callback, 50); // 稍微延遲確保完全準備好
							 | 
						|
								            } else {
							 | 
						|
								                // 繼續等待
							 | 
						|
								                setTimeout(() => {
							 | 
						|
								                    this.waitForAudioReady(callback, maxAttempts, currentAttempt + 1);
							 | 
						|
								                }, 100);
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 初始检测播放速度支持(简化版本,默认启用)
							 | 
						|
								        checkInitialPlaybackRateSupport() {
							 | 
						|
								
							 | 
						|
								            try {
							 | 
						|
								                const systemInfo = uni.getSystemInfoSync();
							 | 
						|
								                console.log('📱 系统信息:', {
							 | 
						|
								                    platform: systemInfo.platform,
							 | 
						|
								                    system: systemInfo.system,
							 | 
						|
								                    SDKVersion: systemInfo.SDKVersion,
							 | 
						|
								                    brand: systemInfo.brand,
							 | 
						|
								                    model: systemInfo.model
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                // 简化检测逻辑:默认启用倍速功能
							 | 
						|
								                // 只在极少数明确不支持的情况下禁用
							 | 
						|
								                this.playbackRateSupported = true;
							 | 
						|
								
							 | 
						|
								                // 仅对非常老的Android版本进行限制(Android 4.x及以下)
							 | 
						|
								                if (systemInfo.platform === 'android') {
							 | 
						|
								                    const androidVersion = systemInfo.system.match(/Android (\d+)/);
							 | 
						|
								                    if (androidVersion && parseInt(androidVersion[1]) < 5) {
							 | 
						|
								                        this.playbackRateSupported = false;
							 | 
						|
								                        console.log(`⚠️ Android版本过低 (${androidVersion[1]}),禁用倍速功能`);
							 | 
						|
								                        uni.showToast({
							 | 
						|
								                            title: `Android ${androidVersion[1]} 不支持倍速`,
							 | 
						|
								                            icon: 'none',
							 | 
						|
								                            duration: 2000
							 | 
						|
								                        });
							 | 
						|
								                        return;
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 显示成功提示
							 | 
						|
								                // uni.showToast({
							 | 
						|
								                //     title: '✅ 倍速功能可用',
							 | 
						|
								                //     icon: 'none',
							 | 
						|
								                //     duration: 1500
							 | 
						|
								                // });
							 | 
						|
								
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('💥 检测播放速度支持时出错:', error);
							 | 
						|
								                // 即使出错也默认启用
							 | 
						|
								                this.playbackRateSupported = true;
							 | 
						|
								
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 应用播放速度设置
							 | 
						|
								        applyPlaybackRate(audio) {
							 | 
						|
								            if (!audio) return;
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            console.log('📊 当前状态检查:', {
							 | 
						|
								                playbackRateSupported: this.playbackRateSupported,
							 | 
						|
								                期望速度: this.playSpeed + 'x',
							 | 
						|
								                音频当前速度: audio.playbackRate + 'x',
							 | 
						|
								                音频播放状态: this.isPlaying ? '播放中' : '未播放'
							 | 
						|
								            });
							 | 
						|
								
							 | 
						|
								            if (this.playbackRateSupported) {
							 | 
						|
								                try {
							 | 
						|
								                    // 多次尝试设置倍速,确保生效
							 | 
						|
								                    const maxAttempts = 3;
							 | 
						|
								                    let attempt = 0;
							 | 
						|
								
							 | 
						|
								                    const trySetRate = () => {
							 | 
						|
								                        attempt++;
							 | 
						|
								                        audio.playbackRate = this.playSpeed;
							 | 
						|
								
							 | 
						|
								                        setTimeout(() => {
							 | 
						|
								                            const actualRate = audio.playbackRate;
							 | 
						|
								                            const rateDifference = Math.abs(actualRate - this.playSpeed);
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                            if (rateDifference >= 0.01 && attempt < maxAttempts) {
							 | 
						|
								
							 | 
						|
								                                setTimeout(trySetRate, 100);
							 | 
						|
								                            } else if (rateDifference < 0.01) {
							 | 
						|
								
							 | 
						|
								                            } else {
							 | 
						|
								
							 | 
						|
								                            }
							 | 
						|
								                        }, 50);
							 | 
						|
								                    };
							 | 
						|
								
							 | 
						|
								                    trySetRate();
							 | 
						|
								
							 | 
						|
								                } catch (error) {
							 | 
						|
								
							 | 
						|
								                }
							 | 
						|
								            } else {
							 | 
						|
								
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 检查播放速度控制支持(简化版本)
							 | 
						|
								        checkPlaybackRateSupport(audio) {
							 | 
						|
								
							 | 
						|
								            try {
							 | 
						|
								                // 如果初始检测已经禁用,直接返回
							 | 
						|
								                if (!this.playbackRateSupported) {
							 | 
						|
								
							 | 
						|
								                    return;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                console.log('🎧 音频实例信息:', {
							 | 
						|
								                    音频对象存在: !!audio,
							 | 
						|
								                    音频对象类型: typeof audio,
							 | 
						|
								                    音频src: audio ? audio.src : '无'
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                // 检测音频实例类型和倍速支持
							 | 
						|
								                let isHTML5Audio = false;
							 | 
						|
								                let supportsPlaybackRate = false;
							 | 
						|
								
							 | 
						|
								                if (audio) {
							 | 
						|
								                    // 检查是否为HTML5 Audio包装实例
							 | 
						|
								                    if (audio._nativeAudio && audio._nativeAudio instanceof Audio) {
							 | 
						|
								                        isHTML5Audio = true;
							 | 
						|
								                        supportsPlaybackRate = true;
							 | 
						|
								
							 | 
						|
								                    }
							 | 
						|
								                    // 检查是否为原生HTML5 Audio
							 | 
						|
								                    else if (audio instanceof Audio) {
							 | 
						|
								                        isHTML5Audio = true;
							 | 
						|
								                        supportsPlaybackRate = true;
							 | 
						|
								
							 | 
						|
								                    }
							 | 
						|
								                    // 检查uni-app音频实例的playbackRate属性
							 | 
						|
								                    else if (typeof audio.playbackRate !== 'undefined') {
							 | 
						|
								                        supportsPlaybackRate = true;
							 | 
						|
								
							 | 
						|
								                    } else {
							 | 
						|
								
							 | 
						|
								                    }
							 | 
						|
								
							 | 
						|
								                    // console.log('🔍 音频实例分析:', {
							 | 
						|
								                    //   是否HTML5Audio: isHTML5Audio,
							 | 
						|
								                    //   支持倍速: supportsPlaybackRate,
							 | 
						|
								                    //   实例类型: audio.constructor?.name || 'unknown',
							 | 
						|
								                    //   playbackRate属性: typeof audio.playbackRate
							 | 
						|
								                    // });
							 | 
						|
								
							 | 
						|
								                    // 如果支持倍速,尝试设置当前播放速度
							 | 
						|
								                    if (supportsPlaybackRate) {
							 | 
						|
								                        try {
							 | 
						|
								                            const currentSpeed = this.playSpeed || 1.0;
							 | 
						|
								                            audio.playbackRate = currentSpeed;
							 | 
						|
								                            // console.log(`🔧 设置播放速度为 ${currentSpeed}x`);
							 | 
						|
								
							 | 
						|
								                            // 验证设置结果
							 | 
						|
								                            // setTimeout(() => {
							 | 
						|
								                            //   const actualRate = audio.playbackRate;
							 | 
						|
								                            //   console.log('🔍 播放速度验证:', {
							 | 
						|
								                            //     期望值: currentSpeed,
							 | 
						|
								                            //     实际值: actualRate,
							 | 
						|
								                            //     设置成功: Math.abs(actualRate - currentSpeed) < 0.1
							 | 
						|
								                            //   });
							 | 
						|
								                            // }, 50);
							 | 
						|
								
							 | 
						|
								                        } catch (error) {
							 | 
						|
								
							 | 
						|
								                        }
							 | 
						|
								                    }
							 | 
						|
								                } else {
							 | 
						|
								
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 保持倍速功能启用状态
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('💥 检查播放速度支持时出错:', error);
							 | 
						|
								                // 即使出错也保持启用状态
							 | 
						|
								
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        formatTime(seconds) {
							 | 
						|
								            const mins = Math.floor(seconds / 60);
							 | 
						|
								            const secs = Math.floor(seconds % 60);
							 | 
						|
								            return `${mins.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 清理音频缓存
							 | 
						|
								        clearAudioCache() {
							 | 
						|
								            this.audioCache = {};
							 | 
						|
								
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 限制缓存大小,保留最近访问的页面
							 | 
						|
								        limitCacheSize(maxSize = 10) {
							 | 
						|
								            const cacheKeys = Object.keys(this.audioCache);
							 | 
						|
								            if (cacheKeys.length > maxSize) {
							 | 
						|
								                // 删除最旧的缓存项
							 | 
						|
								                const keysToDelete = cacheKeys.slice(0, cacheKeys.length - maxSize);
							 | 
						|
								                keysToDelete.forEach(key => {
							 | 
						|
								                    delete this.audioCache[key];
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 自動加載第一頁音頻並播放
							 | 
						|
								        async autoLoadAndPlayFirstPage() {
							 | 
						|
								            try {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                // 確保當前是第一頁且需要加載音頻
							 | 
						|
								                if (this.currentPage === 1 && this.shouldLoadAudio) {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                    // 加載音頻
							 | 
						|
								                    await this.getCurrentPageAudio();
							 | 
						|
								
							 | 
						|
								                    // 檢查是否成功加載音頻
							 | 
						|
								                    if (this.currentPageAudios && this.currentPageAudios.length > 0) {
							 | 
						|
								
							 | 
						|
								                        // getCurrentPageAudio方法已經處理了第一個音頻的播放,這裡不需要再次調用playAudio
							 | 
						|
								                    } else {
							 | 
						|
								
							 | 
						|
								                    }
							 | 
						|
								                } else {
							 | 
						|
								
							 | 
						|
								                }
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('自動加載和播放音頻失敗:', error);
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 清理音频资源
							 | 
						|
								        destroyAudio() {
							 | 
						|
								            // 使用audioManager停止当前音频
							 | 
						|
								            audioManager.stopCurrentAudio();
							 | 
						|
								
							 | 
						|
								            // 重置所有播放状态
							 | 
						|
								            this.isPlaying = false;
							 | 
						|
								            this.currentTime = 0;
							 | 
						|
								            this.sliderValue = 0;
							 | 
						|
								            this.currentHighlightIndex = -1;
							 | 
						|
								
							 | 
						|
								            // 清理音频缓存
							 | 
						|
								            this.clearAudioCache();
							 | 
						|
								
							 | 
						|
								            // 取消正在进行的请求
							 | 
						|
								            this.shouldCancelRequest = true;
							 | 
						|
								
							 | 
						|
								            // 重置加载状态
							 | 
						|
								            this.isAudioLoading = false;
							 | 
						|
								            this.isVoiceChanging = false;
							 | 
						|
								            this.audioLoadFailed = false;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 停止单词音频播放(全局音频管理)
							 | 
						|
								        stopWordAudio() {
							 | 
						|
								            // 使用audioManager停止当前音频(如果是单词音频)
							 | 
						|
								            if (audioManager.currentAudioType === 'word') {
							 | 
						|
								                audioManager.stopCurrentAudio();
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 课程切换时的完整数据清理(保留音色设置)
							 | 
						|
								        resetForCourseChange() {
							 | 
						|
								            // 停止当前音频播放
							 | 
						|
								            if (this.isPlaying) {
							 | 
						|
								                this.pauseAudio();
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 使用audioManager停止当前音频
							 | 
						|
								            audioManager.stopCurrentAudio();
							 | 
						|
								
							 | 
						|
								            // 清空所有音频相关数据
							 | 
						|
								            this.currentPageAudios = [];
							 | 
						|
								            this.currentAudioIndex = 0;
							 | 
						|
								            this.currentTime = 0;
							 | 
						|
								            this.totalTime = 0;
							 | 
						|
								            this.sliderValue = 0;
							 | 
						|
								            this.isDragging = false;
							 | 
						|
								            this.isPlaying = false;
							 | 
						|
								            this.hasAudioData = false;
							 | 
						|
								            this.isAudioLoading = false;
							 | 
						|
								            this.audioLoadFailed = false;
							 | 
						|
								            this.currentHighlightIndex = -1;
							 | 
						|
								
							 | 
						|
								            // 3. 清空音频缓存(因为课程变了,所有缓存都无效)
							 | 
						|
								            this.clearAudioCache();
							 | 
						|
								
							 | 
						|
								            // 4. 重置预加载状态
							 | 
						|
								            this.isPreloading = false;
							 | 
						|
								            this.preloadProgress = 0;
							 | 
						|
								            this.preloadedPages = new Set();
							 | 
						|
								
							 | 
						|
								            // 5. 重置播放控制状态
							 | 
						|
								            this.isLoop = false;
							 | 
						|
								            this.playSpeed = 1.0;
							 | 
						|
								            this.playbackRateSupported = true;
							 | 
						|
								
							 | 
						|
								            // 6. 重置音色切换状态
							 | 
						|
								            this.isVoiceChanging = false;
							 | 
						|
								
							 | 
						|
								            // 7. 设置课程切换状态
							 | 
						|
								            this.isJustSwitchedCourse = true;
							 | 
						|
								
							 | 
						|
								            // 注意:不清空 voiceId,保留用户的音色选择
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 7. 通知父组件状态变化
							 | 
						|
								            this.$emit('audio-state-change', {
							 | 
						|
								                hasAudioData: false,
							 | 
						|
								                isLoading: false,
							 | 
						|
								                audioLoadFailed: false,
							 | 
						|
								                currentHighlightIndex: -1
							 | 
						|
								            });
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 自动加载并播放音频(课程切换后调用)
							 | 
						|
								        async autoLoadAndPlayAudio() {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            // 检查是否需要加载音频
							 | 
						|
								            if (!this.shouldLoadAudio) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查必要条件
							 | 
						|
								            if (!this.courseId || !this.currentPage) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            try {
							 | 
						|
								                // 设置加载状态
							 | 
						|
								                this.isAudioLoading = true;
							 | 
						|
								
							 | 
						|
								                // 开始加载音频
							 | 
						|
								                await this.getCurrentPageAudio();
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('自动加载音频失败:', error);
							 | 
						|
								                this.isAudioLoading = false;
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 暂停音频(页面隐藏时调用)
							 | 
						|
								        pauseOnHide() {
							 | 
						|
								            this.pauseAudio();
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 处理音色切换(由父组件调用)
							 | 
						|
								        async handleVoiceChange(newVoiceId, options = {}) {
							 | 
						|
								            console.log(`🎵 handleVoiceChange: 开始音色切换 ${this.localVoiceId} -> ${newVoiceId}`);
							 | 
						|
								            console.log(`🎵 handleVoiceChange: 当前页面=${this.currentPage}, 课程ID=${this.courseId}, bookPages长度=${this.bookPages.length}`);
							 | 
						|
								
							 | 
						|
								            // 检查是否正在加载音频,如果是则阻止音色切换
							 | 
						|
								            if (this.isAudioLoading) {
							 | 
						|
								                console.log(`🎵 handleVoiceChange: 音频正在加载中,阻止音色切换`);
							 | 
						|
								                throw new Error('音频加载中,请稍后再试');
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            const { preloadAllPages = true } = options; // 默认预加载所有页面
							 | 
						|
								
							 | 
						|
								            try {
							 | 
						|
								                // 1. 停止当前播放的音频
							 | 
						|
								                if (this.isPlaying) {
							 | 
						|
								                    this.pauseAudio();
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 2. 销毁当前音频实例
							 | 
						|
								                audioManager.stopCurrentAudio();
							 | 
						|
								                this.currentAudio = null;
							 | 
						|
								
							 | 
						|
								                // 3. 清理所有音频缓存(因为音色变了,所有缓存都无效)
							 | 
						|
								                this.clearAudioCache();
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                // 4. 重置音频状态
							 | 
						|
								                this.currentPageAudios = [];
							 | 
						|
								                this.currentAudioIndex = 0;
							 | 
						|
								                this.isPlaying = false;
							 | 
						|
								                this.currentTime = 0;
							 | 
						|
								                this.totalTime = 0;
							 | 
						|
								                this.hasAudioData = false;
							 | 
						|
								                this.audioLoadFailed = false;
							 | 
						|
								                this.currentHighlightIndex = -1;
							 | 
						|
								
							 | 
						|
								                // 5. 设置音色切换加载状态
							 | 
						|
								                this.isVoiceChanging = true;
							 | 
						|
								                this.isAudioLoading = true;
							 | 
						|
								
							 | 
						|
								                // 6. 更新本地音色ID(不直接修改prop)
							 | 
						|
								                this.localVoiceId = newVoiceId;
							 | 
						|
								
							 | 
						|
								                // 7. 通知父组件开始加载状态
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: false,
							 | 
						|
								                    isLoading: true,
							 | 
						|
								                    currentHighlightIndex: -1
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                // 8. 如果当前页面需要加载音频,优先获取当前页面音频
							 | 
						|
								                if (this.shouldLoadAudio && this.courseId && this.currentPage) {
							 | 
						|
								                    console.log(`🎵 handleVoiceChange: 开始获取当前页面音频,页面=${this.currentPage}, 课程=${this.courseId}`);
							 | 
						|
								                    await this.getCurrentPageAudio();
							 | 
						|
								                    console.log(`🎵 handleVoiceChange: 当前页面音频获取完成,hasAudioData=${this.hasAudioData}`);
							 | 
						|
								                } else {
							 | 
						|
								                    // 如果不需要加载音频,直接清除加载状态
							 | 
						|
								                    console.log(`🎵 handleVoiceChange: 不需要加载音频,shouldLoadAudio=${this.shouldLoadAudio}, courseId=${this.courseId}, currentPage=${this.currentPage}`);
							 | 
						|
								                    this.isAudioLoading = false;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 9. 清除音色切换加载状态
							 | 
						|
								                this.isVoiceChanging = false;
							 | 
						|
								
							 | 
						|
								                // 10. 如果需要预加载其他页面,启动预加载
							 | 
						|
								                if (preloadAllPages) {
							 | 
						|
								
							 | 
						|
								                    // 延迟启动预加载,确保当前页面音频加载完成
							 | 
						|
								                    setTimeout(() => {
							 | 
						|
								                        this.preloadAllPagesAudio();
							 | 
						|
								                    }, 1000);
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 11. 通知父组件最终状态
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: this.hasAudioData,
							 | 
						|
								                    isLoading: this.isAudioLoading,
							 | 
						|
								                    currentHighlightIndex: this.currentHighlightIndex
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                // 12. 通知父组件音色切换完成
							 | 
						|
								                this.$emit('voice-change-complete', {
							 | 
						|
								                    voiceId: newVoiceId,
							 | 
						|
								                    hasAudioData: this.hasAudioData,
							 | 
						|
								                    preloadAllPages: preloadAllPages
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('🎵 AudioControls: 音色切换处理失败:', error);
							 | 
						|
								                // 清除加载状态
							 | 
						|
								                this.isVoiceChanging = false;
							 | 
						|
								                this.isAudioLoading = false;
							 | 
						|
								
							 | 
						|
								                // 通知父组件状态变化
							 | 
						|
								                this.$emit('audio-state-change', {
							 | 
						|
								                    hasAudioData: false,
							 | 
						|
								                    isLoading: false,
							 | 
						|
								                    currentHighlightIndex: -1
							 | 
						|
								                });
							 | 
						|
								
							 | 
						|
								                this.$emit('voice-change-error', error);
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 预加载所有页面音频(音色切换时使用)
							 | 
						|
								        async preloadAllPagesAudio() {
							 | 
						|
								            if (this.isPreloading) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            try {
							 | 
						|
								
							 | 
						|
								                this.isPreloading = true;
							 | 
						|
								                this.preloadProgress = 0;
							 | 
						|
								
							 | 
						|
								                // 获取所有文本页面
							 | 
						|
								                const allTextPages = [];
							 | 
						|
								                for (let i = 0; i < this.bookPages.length; i++) {
							 | 
						|
								                    const pageData = this.bookPages[i];
							 | 
						|
								                    const hasTextContent = pageData && pageData.some(item => item.type === 'text');
							 | 
						|
								
							 | 
						|
								                    if (hasTextContent && i !== this.currentPage - 1) { // 排除当前页面,因为已经加载过了
							 | 
						|
								                        allTextPages.push({
							 | 
						|
								                            pageIndex: i + 1,
							 | 
						|
								                            pageData: pageData
							 | 
						|
								                        });
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                if (allTextPages.length === 0) {
							 | 
						|
								
							 | 
						|
								                    this.isPreloading = false;
							 | 
						|
								                    return;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                // 逐页预加载音频
							 | 
						|
								                for (let i = 0; i < allTextPages.length; i++) {
							 | 
						|
								                    const pageInfo = allTextPages[i];
							 | 
						|
								
							 | 
						|
								                    try {
							 | 
						|
								                        console.log(`预加载第 ${pageInfo.pageIndex} 页音频 (${i + 1}/${allTextPages.length})`);
							 | 
						|
								                        await this.preloadPageAudio(pageInfo.pageIndex, pageInfo.pageData);
							 | 
						|
								
							 | 
						|
								                        // 更新进度
							 | 
						|
								                        this.preloadProgress = Math.round(((i + 1) / allTextPages.length) * 100);
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                        // 添加小延迟,避免请求过于频繁
							 | 
						|
								                        if (i < allTextPages.length - 1) {
							 | 
						|
								                            await new Promise(resolve => setTimeout(resolve, 100));
							 | 
						|
								                        }
							 | 
						|
								                    } catch (error) {
							 | 
						|
								                        console.error(`预加载第 ${pageInfo.pageIndex} 页音频失败:`, error);
							 | 
						|
								                        // 继续预加载其他页面,不因单页失败而中断
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('预加载所有页面音频失败:', error);
							 | 
						|
								            } finally {
							 | 
						|
								                this.isPreloading = false;
							 | 
						|
								                this.preloadProgress = 100;
							 | 
						|
								
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 开始预加载音频(由父组件调用)
							 | 
						|
								        async startPreloadAudio() {
							 | 
						|
								            if (this.isPreloading) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            try {
							 | 
						|
								
							 | 
						|
								                this.isPreloading = true;
							 | 
						|
								                this.preloadProgress = 0;
							 | 
						|
								
							 | 
						|
								                // 获取需要预加载的页面列表(当前页面后的几页)
							 | 
						|
								                const preloadPages = this.getPreloadPageList();
							 | 
						|
								
							 | 
						|
								                if (preloadPages.length === 0) {
							 | 
						|
								
							 | 
						|
								                    this.isPreloading = false;
							 | 
						|
								                    return;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                // 逐个预加载页面音频
							 | 
						|
								                for (let i = 0; i < preloadPages.length; i++) {
							 | 
						|
								                    const pageInfo = preloadPages[i];
							 | 
						|
								
							 | 
						|
								                    try {
							 | 
						|
								
							 | 
						|
								                        await this.preloadPageAudio(pageInfo.pageIndex, pageInfo.pageData);
							 | 
						|
								
							 | 
						|
								                        // 更新预加载进度
							 | 
						|
								                        this.preloadProgress = Math.round(((i + 1) / preloadPages.length) * 100);
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                        // 延迟一下,避免请求过于频繁
							 | 
						|
								                        await new Promise(resolve => setTimeout(resolve, 150));
							 | 
						|
								
							 | 
						|
								                    } catch (error) {
							 | 
						|
								                        console.error(`预加载第${pageInfo.pageIndex + 1}页音频失败:`, error);
							 | 
						|
								                        // 继续预加载其他页面
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('预加载音频失败:', error);
							 | 
						|
								            } finally {
							 | 
						|
								                this.isPreloading = false;
							 | 
						|
								                this.preloadProgress = 100;
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 获取需要预加载的页面列表
							 | 
						|
								        getPreloadPageList() {
							 | 
						|
								            const preloadPages = [];
							 | 
						|
								            const maxPreloadPages = 3; // 优化:最多预加载3页,减少服务器压力
							 | 
						|
								
							 | 
						|
								            // 从当前页面的下一页开始预加载
							 | 
						|
								            for (let i = this.currentPage; i < Math.min(this.currentPage + maxPreloadPages, this.bookPages.length); i++) {
							 | 
						|
								                const pageData = this.bookPages[i];
							 | 
						|
								
							 | 
						|
								                // 检查页面是否需要会员且用户非会员,如果是则跳过
							 | 
						|
								                const pageRequiresMember = this.pagePay[i] === 'Y';
							 | 
						|
								                // 免费用户不受会员限制
							 | 
						|
								                const isFreeUser = this.userInfo && this.userInfo.freeUser === 'Y';
							 | 
						|
								                if (pageRequiresMember && !this.isMember && !isFreeUser) {
							 | 
						|
								
							 | 
						|
								                    continue;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 检查页面是否有文本内容且未缓存
							 | 
						|
								                if (pageData && pageData.length > 0) {
							 | 
						|
								                    const hasTextContent = pageData.some(item => item.type === 'text' && item.content);
							 | 
						|
								                    const cacheKey = `${this.courseId}_${i + 1}_${this.voiceId}`;
							 | 
						|
								                    const isAlreadyCached = this.audioCache[cacheKey];
							 | 
						|
								
							 | 
						|
								                    if (hasTextContent && !isAlreadyCached) {
							 | 
						|
								                        preloadPages.push({
							 | 
						|
								                            pageIndex: i,
							 | 
						|
								                            pageData: pageData
							 | 
						|
								                        });
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            return preloadPages;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 预加载单个页面的音频
							 | 
						|
								        async preloadPageAudio(pageIndex, pageData) {
							 | 
						|
								            const cacheKey = `${this.courseId}_${pageIndex + 1}_${this.voiceId}`;
							 | 
						|
								
							 | 
						|
								            // 检查是否已经缓存
							 | 
						|
								            if (this.audioCache[cacheKey]) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 收集页面中的文本内容
							 | 
						|
								            const textItems = pageData.filter(item => item.type === 'text' && item.content);
							 | 
						|
								
							 | 
						|
								            if (textItems.length === 0) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            const audioArray = [];
							 | 
						|
								            let totalDuration = 0;
							 | 
						|
								
							 | 
						|
								            // 逐个处理文本项,支持长文本分割
							 | 
						|
								            for (let i = 0; i < textItems.length; i++) {
							 | 
						|
								                const item = textItems[i];
							 | 
						|
								
							 | 
						|
								                try {
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                    // 使用分批次请求音频
							 | 
						|
								                    const batchResult = await this.requestAudioInBatches(item.content, this.localVoiceId);
							 | 
						|
								
							 | 
						|
								                    // 检查请求是否被取消
							 | 
						|
								                    if (batchResult === null) {
							 | 
						|
								
							 | 
						|
								                        return;
							 | 
						|
								                    }
							 | 
						|
								
							 | 
						|
								                    if (batchResult.audioSegments.length > 0) {
							 | 
						|
								                        // 将所有音频段添加到音频数组
							 | 
						|
								                        for (const segment of batchResult.audioSegments) {
							 | 
						|
								                            if (!segment.error) {
							 | 
						|
								                                audioArray.push({
							 | 
						|
								                                    isLead: item.isLead,
							 | 
						|
								                                    url: segment.url,
							 | 
						|
								                                    text: segment.text,
							 | 
						|
								                                    duration: segment.duration,
							 | 
						|
								                                    startIndex: segment.startIndex,
							 | 
						|
								                                    endIndex: segment.endIndex,
							 | 
						|
								                                    segmentIndex: segment.segmentIndex,
							 | 
						|
								                                    originalTextIndex: i, // 标记属于哪个原始文本项
							 | 
						|
								                                    isSegmented: batchResult.audioSegments.length > 1 // 标记是否为分段音频
							 | 
						|
								                                });
							 | 
						|
								
							 | 
						|
								                                totalDuration += segment.duration;
							 | 
						|
								                            }
							 | 
						|
								                        }
							 | 
						|
								
							 | 
						|
								                        console.log(`第${pageIndex + 1}页第${i + 1}个文本项预加载完成,获得 ${batchResult.audioSegments.filter(s => !s.error).length} 个音频段`);
							 | 
						|
								                    } else {
							 | 
						|
								                        console.error(`第${pageIndex + 1}页第${i + 1}个文本项音频预加载全部失败`);
							 | 
						|
								                    }
							 | 
						|
								                } catch (error) {
							 | 
						|
								                    console.error(`第${pageIndex + 1}页第${i + 1}个文本项处理异常:`, error);
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 每个文本项处理之间间隔150ms,避免请求过于频繁
							 | 
						|
								                if (i < textItems.length - 1) {
							 | 
						|
								                    await new Promise(resolve => setTimeout(resolve, 150));
							 | 
						|
								                }
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 保存到缓存
							 | 
						|
								            if (audioArray.length > 0) {
							 | 
						|
								                this.audioCache[cacheKey] = {
							 | 
						|
								                    audios: audioArray,
							 | 
						|
								                    totalDuration: totalDuration,
							 | 
						|
								                    voiceId: this.localVoiceId, // 保存音色ID用于验证
							 | 
						|
								                    timestamp: Date.now() // 保存时间戳
							 | 
						|
								                };
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                // 限制缓存大小
							 | 
						|
								                this.limitCacheSize(1000);
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 检查指定页面是否有音频缓存
							 | 
						|
								        checkAudioCache(pageNumber) {
							 | 
						|
								            const cacheKey = `${this.courseId}_${pageNumber}_${this.localVoiceId}`;
							 | 
						|
								            const cachedData = this.audioCache[cacheKey];
							 | 
						|
								
							 | 
						|
								            if (cachedData && cachedData.audios && cachedData.audios.length > 0) {
							 | 
						|
								
							 | 
						|
								                return true;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								            return false;
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 自动播放已缓存的音频
							 | 
						|
								        async autoPlayCachedAudio() {
							 | 
						|
								            try {
							 | 
						|
								                // 如果正在音色切换中,不自动播放
							 | 
						|
								                if (this.isVoiceChanging) {
							 | 
						|
								
							 | 
						|
								                    return;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                const cacheKey = `${this.courseId}_${this.currentPage}_${this.voiceId}`;
							 | 
						|
								                const cachedData = this.audioCache[cacheKey];
							 | 
						|
								
							 | 
						|
								                if (!cachedData || !cachedData.audios || cachedData.audios.length === 0) {
							 | 
						|
								
							 | 
						|
								                    return;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								
							 | 
						|
								                // 停止当前播放的音频
							 | 
						|
								                this.pauseAudio();
							 | 
						|
								
							 | 
						|
								                // 设置当前页面的音频数据
							 | 
						|
								                this.currentPageAudios = cachedData.audios;
							 | 
						|
								                this.totalDuration = cachedData.totalDuration;
							 | 
						|
								
							 | 
						|
								                // 查找第一个非导语音频
							 | 
						|
								                const firstNonLeadIndex = this.findFirstNonLeadAudio();
							 | 
						|
								                this.currentAudioIndex = firstNonLeadIndex;
							 | 
						|
								                this.currentTime = 0;
							 | 
						|
								                this.isPlaying = false;
							 | 
						|
								
							 | 
						|
								                console.log(`🎵 autoPlayCachedAudio: 设置起始索引为${this.currentAudioIndex}(跳过导语)`);
							 | 
						|
								
							 | 
						|
								                // 如果所有音频都是导语,不播放
							 | 
						|
								                if (firstNonLeadIndex < 0) {
							 | 
						|
								                    console.log('🎵 autoPlayCachedAudio: 所有音频都是导语,不播放');
							 | 
						|
								                    return;
							 | 
						|
								                }
							 | 
						|
								
							 | 
						|
								                // 延迟一下再开始播放,确保UI更新完成
							 | 
						|
								                setTimeout(() => {
							 | 
						|
								                    this.playAudio();
							 | 
						|
								                }, 300);
							 | 
						|
								
							 | 
						|
								            } catch (error) {
							 | 
						|
								                console.error('自动播放缓存音频失败:', error);
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 清理audioManager事件监听
							 | 
						|
								        removeAudioManagerListeners() {
							 | 
						|
								            if (this.audioManagerListeners) {
							 | 
						|
								                audioManager.off('play', this.audioManagerListeners.onPlay);
							 | 
						|
								                audioManager.off('pause', this.audioManagerListeners.onPause);
							 | 
						|
								                audioManager.off('ended', this.audioManagerListeners.onEnded);
							 | 
						|
								                audioManager.off('error', this.audioManagerListeners.onError);
							 | 
						|
								                audioManager.off('timeupdate', this.audioManagerListeners.onTimeupdate);
							 | 
						|
								                this.audioManagerListeners = null;
							 | 
						|
								            }
							 | 
						|
								        },
							 | 
						|
								
							 | 
						|
								        // 初始化audioManager事件监听
							 | 
						|
								        initAudioManagerListeners() {
							 | 
						|
								            // 先清理已有的监听器
							 | 
						|
								            this.removeAudioManagerListeners();
							 | 
						|
								
							 | 
						|
								            // 创建监听器对象,保存引用以便后续清理
							 | 
						|
								            this.audioManagerListeners = {
							 | 
						|
								                onPlay: (data) => {
							 | 
						|
								                    if (data && data.audioType === 'sentence') {
							 | 
						|
								                        this.isPlaying = true;
							 | 
						|
								                        console.log('🎵 句子音频开始播放');
							 | 
						|
								                        // 播放开始时立即更新高亮
							 | 
						|
								                        this.updateHighlightIndex();
							 | 
						|
								                    }
							 | 
						|
								                },
							 | 
						|
								
							 | 
						|
								                onPause: (data) => {
							 | 
						|
								                    if (data && data.audioType === 'sentence') {
							 | 
						|
								                        this.isPlaying = false;
							 | 
						|
								                        console.log('⏸️ 句子音频暂停');
							 | 
						|
								                    }
							 | 
						|
								                },
							 | 
						|
								
							 | 
						|
								                onEnded: (data) => {
							 | 
						|
								                    if (data && data.audioType === 'sentence') {
							 | 
						|
								                        this.isPlaying = false;
							 | 
						|
								                        console.log('✅ 句子音频播放结束');
							 | 
						|
								                        // 自动播放下一个音频
							 | 
						|
								                        this.onAudioEnded();
							 | 
						|
								                    }
							 | 
						|
								                },
							 | 
						|
								
							 | 
						|
								                onError: (data) => {
							 | 
						|
								                    if (data && data.audioType === 'sentence') {
							 | 
						|
								                        this.isPlaying = false;
							 | 
						|
								                        console.error('❌ 句子音频播放错误:', data.error);
							 | 
						|
								                        uni.showToast({
							 | 
						|
								                            title: '音频播放失败',
							 | 
						|
								                            icon: 'none'
							 | 
						|
								                        });
							 | 
						|
								                    }
							 | 
						|
								                },
							 | 
						|
								
							 | 
						|
								                onTimeupdate: (data) => {
							 | 
						|
								                    if (data.audioType === 'sentence') {
							 | 
						|
								                        // 计算总时间(包括之前音频的时长)
							 | 
						|
								                        let totalTime = 0;
							 | 
						|
								                        for (let i = 0; i < this.currentAudioIndex; i++) {
							 | 
						|
								                            totalTime += this.currentPageAudios[i].duration;
							 | 
						|
								                        }
							 | 
						|
								                        totalTime += data.currentTime;
							 | 
						|
								
							 | 
						|
								                        this.currentTime = totalTime;
							 | 
						|
								
							 | 
						|
								                        // 如果不是正在拖動滑動條,則同步更新滑動條的值
							 | 
						|
								                        if (!this.isDragging) {
							 | 
						|
								                            this.sliderValue = this.currentTime;
							 | 
						|
								                        }
							 | 
						|
								                    }
							 | 
						|
								                }
							 | 
						|
								            };
							 | 
						|
								
							 | 
						|
								            // 绑定事件监听器
							 | 
						|
								            audioManager.on('play', this.audioManagerListeners.onPlay);
							 | 
						|
								            audioManager.on('pause', this.audioManagerListeners.onPause);
							 | 
						|
								            audioManager.on('ended', this.audioManagerListeners.onEnded);
							 | 
						|
								            audioManager.on('error', this.audioManagerListeners.onError);
							 | 
						|
								            audioManager.on('timeupdate', this.audioManagerListeners.onTimeupdate);
							 | 
						|
								        }
							 | 
						|
								    },
							 | 
						|
								    mounted() {
							 | 
						|
								        console.log('⚙️ 初始倍速配置:', {
							 | 
						|
								            默認播放速度: this.playSpeed + 'x',
							 | 
						|
								            可選速度選項: this.speedOptions.map(s => s + 'x'),
							 | 
						|
								            初始支持狀態: this.playbackRateSupported
							 | 
						|
								        });
							 | 
						|
								
							 | 
						|
								        // 初始檢測播放速度支持
							 | 
						|
								        this.checkInitialPlaybackRateSupport();
							 | 
						|
								
							 | 
						|
								        // 从audioManager获取全局语速设置,如果存在则同步到本地
							 | 
						|
								        const globalPlaybackRate = audioManager.getGlobalPlaybackRate();
							 | 
						|
								        if (globalPlaybackRate && globalPlaybackRate !== this.playSpeed) {
							 | 
						|
								            this.playSpeed = globalPlaybackRate;
							 | 
						|
								        } else {
							 | 
						|
								            // 同步初始语速设置到audioManager
							 | 
						|
								            audioManager.setGlobalPlaybackRate(this.playSpeed);
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // 初始化audioManager事件监听
							 | 
						|
								        this.initAudioManagerListeners();
							 | 
						|
								    },
							 | 
						|
								
							 | 
						|
								    // 自动播放预加载的音频
							 | 
						|
								    async autoPlayPreloadedAudio() {
							 | 
						|
								        try {
							 | 
						|
								            // 如果正在音色切换中,不自动播放
							 | 
						|
								            if (this.isVoiceChanging) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 检查是否有音频数据
							 | 
						|
								            if (!this.hasAudioData || this.currentPageAudios.length === 0) {
							 | 
						|
								
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 查找第一个非导语音频
							 | 
						|
								            const firstNonLeadIndex = this.findFirstNonLeadAudio();
							 | 
						|
								            if (firstNonLeadIndex < 0 || firstNonLeadIndex >= this.currentPageAudios.length) {
							 | 
						|
								                console.warn('🎵 autoPlayPreloadedAudio: 找不到有效的非导语音频');
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            const firstAudio = this.currentPageAudios[firstNonLeadIndex];
							 | 
						|
								            if (!firstAudio || !firstAudio.url) {
							 | 
						|
								                console.warn('🎵 autoPlayPreloadedAudio: 第一个非导语音频数据无效');
							 | 
						|
								                return;
							 | 
						|
								            }
							 | 
						|
								
							 | 
						|
								            // 设置播放状态(跳过导语)
							 | 
						|
								            this.currentAudioIndex = firstNonLeadIndex;
							 | 
						|
								            this.currentTime = 0;
							 | 
						|
								            this.sliderValue = 0;
							 | 
						|
								            
							 | 
						|
								            // 设置高亮索引
							 | 
						|
								            const highlightIndex = firstAudio.originalTextIndex !== undefined ? firstAudio.originalTextIndex : firstNonLeadIndex;
							 | 
						|
								            this.currentHighlightIndex = highlightIndex;
							 | 
						|
								
							 | 
						|
								            console.log(`🎵 autoPlayPreloadedAudio: 播放第一个非导语音频,索引=${firstNonLeadIndex}, isLead=${firstAudio.isLead}`);
							 | 
						|
								
							 | 
						|
								            // 使用audioManager播放第一个非导语音频
							 | 
						|
								            audioManager.playAudio(firstAudio.url, 'sentence', { playbackRate: this.playSpeed });
							 | 
						|
								            this.isPlaying = true;
							 | 
						|
								
							 | 
						|
								        } catch (error) {
							 | 
						|
								            console.error('自动播放预加载音频失败:', error);
							 | 
						|
								        }
							 | 
						|
								    },
							 | 
						|
								
							 | 
						|
								    beforeDestroy() {
							 | 
						|
								        // 清理页面切换防抖定时器
							 | 
						|
								        if (this.pageChangeTimer) {
							 | 
						|
								            clearTimeout(this.pageChangeTimer);
							 | 
						|
								            this.pageChangeTimer = null;
							 | 
						|
								        }
							 | 
						|
								
							 | 
						|
								        // 清理音频资源
							 | 
						|
								        this.destroyAudio();
							 | 
						|
								
							 | 
						|
								        // 清理audioManager事件监听器
							 | 
						|
								        this.removeAudioManagerListeners();
							 | 
						|
								    }
							 | 
						|
								}
							 | 
						|
								</script>
							 | 
						|
								
							 | 
						|
								<style lang="scss" scoped>
							 | 
						|
								/* 音频控制栏样式 */
							 | 
						|
								.audio-controls-wrapper {
							 | 
						|
								    position: relative;
							 | 
						|
								    z-index: 10;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.audio-controls {
							 | 
						|
								    background: #fff;
							 | 
						|
								    padding: 20rpx 40rpx;
							 | 
						|
								    border-bottom: 1rpx solid #eee;
							 | 
						|
								    transition: transform 0.3s ease;
							 | 
						|
								    position: relative;
							 | 
						|
								    z-index: 10;
							 | 
						|
								
							 | 
						|
								    &.audio-hidden {
							 | 
						|
								        transform: translateY(100%);
							 | 
						|
								    }
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.audio-time {
							 | 
						|
								    display: flex;
							 | 
						|
								    align-items: center;
							 | 
						|
								    margin-bottom: 20rpx;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.time-text {
							 | 
						|
								    font-size: 28rpx;
							 | 
						|
								    color: #999;
							 | 
						|
								    min-width: 80rpx;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.progress-container {
							 | 
						|
								    flex: 1;
							 | 
						|
								    margin: 0 20rpx;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.audio-controls-row {
							 | 
						|
								    display: flex;
							 | 
						|
								    align-items: center;
							 | 
						|
								    justify-content: space-between;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.control-btn {
							 | 
						|
								    display: flex;
							 | 
						|
								    align-items: center;
							 | 
						|
								    padding: 10rpx;
							 | 
						|
								    gap: 8rpx;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.control-btn.disabled {
							 | 
						|
								    pointer-events: none;
							 | 
						|
								    opacity: 0.6;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.control-text {
							 | 
						|
								    font-size: 28rpx;
							 | 
						|
								    color: #4A4A4A;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.play-btn {
							 | 
						|
								    display: flex;
							 | 
						|
								    align-items: center;
							 | 
						|
								    justify-content: center;
							 | 
						|
								    padding: 10rpx;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								/* 音频加载状态样式 */
							 | 
						|
								.audio-loading-container {
							 | 
						|
								    background: #fff;
							 | 
						|
								    padding: 40rpx;
							 | 
						|
								    border-bottom: 1rpx solid #eee;
							 | 
						|
								    display: flex;
							 | 
						|
								    flex-direction: column;
							 | 
						|
								    align-items: center;
							 | 
						|
								    justify-content: center;
							 | 
						|
								    gap: 20rpx;
							 | 
						|
								    position: relative;
							 | 
						|
								    z-index: 10;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								/* 加载指示器样式 */
							 | 
						|
								.loading-indicator {
							 | 
						|
								    display: flex;
							 | 
						|
								    align-items: center;
							 | 
						|
								    justify-content: center;
							 | 
						|
								    gap: 10rpx;
							 | 
						|
								    padding: 10rpx 20rpx;
							 | 
						|
								    background: rgba(6, 218, 220, 0.1);
							 | 
						|
								    border-radius: 20rpx;
							 | 
						|
								    margin-bottom: 10rpx;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.loading-indicator-text {
							 | 
						|
								    font-size: 24rpx;
							 | 
						|
								    color: #06DADC;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.loading-text {
							 | 
						|
								    font-size: 28rpx;
							 | 
						|
								    color: #999;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								/* 音色切换加载状态特殊样式 */
							 | 
						|
								.voice-changing {
							 | 
						|
								    background: linear-gradient(135deg, #fff5f0 0%, #ffe7d9 100%);
							 | 
						|
								    border: 2rpx solid #ff6b35;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.voice-changing-text {
							 | 
						|
								    color: #ff6b35;
							 | 
						|
								    font-weight: 500;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								/* 预加载状态特殊样式 */
							 | 
						|
								.preloading {
							 | 
						|
								    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
							 | 
						|
								    border: 2rpx solid #06DADC;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.preloading .loading-text {
							 | 
						|
								    color: #06DADC;
							 | 
						|
								    font-weight: 500;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								/* 课程切换状态特殊样式 */
							 | 
						|
								.course-switching {
							 | 
						|
								    background: linear-gradient(135deg, #f6ffed 0%, #d9f7be 100%);
							 | 
						|
								    border: 2rpx solid #52c41a;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.course-switching .loading-text {
							 | 
						|
								    color: #52c41a;
							 | 
						|
								    font-weight: 500;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								/* 获取音频按钮样式 */
							 | 
						|
								.audio-get-button-container {
							 | 
						|
								    background: rgba(255, 255, 255, 0.95);
							 | 
						|
								    backdrop-filter: blur(10px);
							 | 
						|
								    padding: 30rpx;
							 | 
						|
								    border-radius: 20rpx;
							 | 
						|
								    border: 2rpx solid #E5E5E5;
							 | 
						|
								    transition: all 0.3s ease;
							 | 
						|
								    position: relative;
							 | 
						|
								    z-index: 10;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.get-audio-btn {
							 | 
						|
								    display: flex;
							 | 
						|
								    align-items: center;
							 | 
						|
								    justify-content: center;
							 | 
						|
								    gap: 16rpx;
							 | 
						|
								    padding: 20rpx 40rpx;
							 | 
						|
								    background: linear-gradient(135deg, #06DADC 0%, #04B8BA 100%);
							 | 
						|
								    border-radius: 50rpx;
							 | 
						|
								    box-shadow: 0 8rpx 20rpx rgba(6, 218, 220, 0.3);
							 | 
						|
								    transition: all 0.3s ease;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.get-audio-btn:active {
							 | 
						|
								    transform: scale(0.95);
							 | 
						|
								    box-shadow: 0 4rpx 10rpx rgba(6, 218, 220, 0.2);
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								/* 音频预加载提示样式 */
							 | 
						|
								.audio-preloaded-container {
							 | 
						|
								    display: flex;
							 | 
						|
								    justify-content: center;
							 | 
						|
								    align-items: center;
							 | 
						|
								    padding: 20rpx;
							 | 
						|
								    transition: all 0.3s ease;
							 | 
						|
								    position: relative;
							 | 
						|
								    z-index: 10;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.preloaded-tip {
							 | 
						|
								    display: flex;
							 | 
						|
								    align-items: center;
							 | 
						|
								    justify-content: center;
							 | 
						|
								    gap: 16rpx;
							 | 
						|
								    padding: 20rpx 40rpx;
							 | 
						|
								    background: linear-gradient(135deg, #52c41a 0%, #389e0d 100%);
							 | 
						|
								    border-radius: 50rpx;
							 | 
						|
								    box-shadow: 0 8rpx 20rpx rgba(82, 196, 26, 0.3);
							 | 
						|
								    transition: all 0.3s ease;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.preloaded-text {
							 | 
						|
								    color: #ffffff;
							 | 
						|
								    font-size: 28rpx;
							 | 
						|
								    font-weight: 500;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								/* 音频获取失败样式 */
							 | 
						|
								.audio-failed-container {
							 | 
						|
								    display: flex;
							 | 
						|
								    flex-direction: column;
							 | 
						|
								    align-items: center;
							 | 
						|
								    justify-content: center;
							 | 
						|
								    padding: 20rpx;
							 | 
						|
								    gap: 20rpx;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.failed-tip {
							 | 
						|
								    display: flex;
							 | 
						|
								    align-items: center;
							 | 
						|
								    justify-content: center;
							 | 
						|
								    gap: 16rpx;
							 | 
						|
								    padding: 20rpx 40rpx;
							 | 
						|
								    background: linear-gradient(135deg, #ff4d4f 0%, #cf1322 100%);
							 | 
						|
								    border-radius: 50rpx;
							 | 
						|
								    box-shadow: 0 8rpx 20rpx rgba(255, 77, 79, 0.3);
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.failed-text {
							 | 
						|
								    color: #ffffff;
							 | 
						|
								    font-size: 28rpx;
							 | 
						|
								    font-weight: 500;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.retry-btn {
							 | 
						|
								    display: flex;
							 | 
						|
								    align-items: center;
							 | 
						|
								    justify-content: center;
							 | 
						|
								    gap: 12rpx;
							 | 
						|
								    padding: 16rpx 32rpx;
							 | 
						|
								    background: linear-gradient(135deg, #06DADC 0%, #05B8BA 100%);
							 | 
						|
								    border-radius: 40rpx;
							 | 
						|
								    box-shadow: 0 6rpx 16rpx rgba(6, 218, 220, 0.3);
							 | 
						|
								    transition: all 0.3s ease;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.retry-btn:active {
							 | 
						|
								    transform: scale(0.95);
							 | 
						|
								    box-shadow: 0 4rpx 12rpx rgba(6, 218, 220, 0.4);
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.retry-text {
							 | 
						|
								    color: #ffffff;
							 | 
						|
								    font-size: 26rpx;
							 | 
						|
								    font-weight: 500;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								.get-audio-text {
							 | 
						|
								    font-size: 32rpx;
							 | 
						|
								    color: #FFFFFF;
							 | 
						|
								    font-weight: 500;
							 | 
						|
								}
							 | 
						|
								
							 | 
						|
								/* 会员限制容器样式 */
							 | 
						|
								.member-restricted-container {
							 | 
						|
								    height: 0;
							 | 
						|
								    overflow: hidden;
							 | 
						|
								    opacity: 0;
							 | 
						|
								    pointer-events: none;
							 | 
						|
								}
							 | 
						|
								</style>
							 |