<template>
	<view class="comment-detail-container">
		<navbar :title="pageTitle" leftClick @leftClick="navigateBack"/>
		
		<!-- 加载状态 -->
		<view class="loading-container" v-if="loading">
			<view class="loading-spinner"></view>
			<text class="loading-text">加载中...</text>
		</view>
		
		<!-- 错误状态 -->
		<view class="error-container" v-if="!loading && hasError">
			<text class="error-text">加载失败，请重试</text>
			<button class="retry-button" @click="loadCommentDetail">重新加载</button>
		</view>
		
		<!-- 主评论内容 -->
		<view class="main-comment" v-if="!loading && !hasError && mainComment">
			<view class="comment-header">
				<image class="avatar" :src="mainComment.userHead || '/static/image/center/default-avatar.png'" mode="aspectFill"></image>
				<view class="user-info">
					<text class="username">{{mainComment.userName}}</text>
					<text class="time">{{formatTime(mainComment.createTime)}}</text>
				</view>
			</view>
			<view class="comment-content">
				<text>{{mainComment.userValue}}</text>
			</view>
			<!-- 评论图片 -->
			<view class="comment-images" v-if="mainComment.userImage">
				<view class="image-grid">
					<image 
						v-for="(img, index) in mainComment.userImage.split(',')" 
						:key="index" 
						:src="img" 
						mode="aspectFill" 
						@click="previewImage(mainComment.userImage.split(','), index)"
						class="comment-image"
					></image>
				</view>
			</view>
			<view class="comment-footer">
				<text class="reply-count">{{totalReplies}}条回复</text>
				<view class="reply-btn" @click="showReplyInput(mainComment.id, mainComment.userName)">
					<uv-icon name="chat" color="#666" size="32rpx"></uv-icon>
					<text>回复</text>
				</view>
			</view>
		</view>
		
		<!-- 回复列表 -->
		<view class="replies-container" v-if="!loading && !hasError && commentList.length > 0">
			<view class="reply-item" v-for="(item, index) in commentList" :key="index">
				<view class="reply-header">
					<image class="avatar" :src="item.userHead || '/static/image/center/default-avatar.png'" mode="aspectFill"></image>
					<view class="user-info">
						<text class="username">{{item.userName}}</text>
						<text class="time">{{formatTime(item.createTime)}}</text>
					</view>
				</view>
				<view class="reply-content">
					<view v-if="item.replyToUserName" class="reply-to">
						<text>回复 </text>
						<text class="reply-username">@{{item.replyToUserName}}</text>
						<text>：</text>
					</view>
					<text>{{item.userValue}}</text>
				</view>
				<!-- 回复图片 -->
				<view class="reply-images" v-if="item.userImage">
					<view class="image-grid">
						<image 
							v-for="(img, imgIndex) in item.userImage.split(',')" 
							:key="imgIndex" 
							:src="img" 
							mode="aspectFill" 
							@click="previewImage(item.userImage.split(','), imgIndex)"
							class="reply-image"
						></image>
					</view>
				</view>
				<view class="reply-footer">
					<view class="reply-info">
						<text v-if="item.replyNum > 0" class="sub-reply-count" @click="navigateToSubComment(item)">
							{{item.replyNum}}条回复 >
						</text>
					</view>
					<view class="reply-btn" @click="showReplyInput(item.id, item.userName)">
						<uv-icon name="chat" color="#666" size="28rpx"></uv-icon>
						<text>回复</text>
					</view>
				</view>
			</view>
		</view>
		
		<!-- 加载更多 -->
		<view class="load-more" v-if="!loading && !hasError && hasMore">
			<text @click="loadMoreReplies">加载更多</text>
		</view>
		
		<!-- 回复输入框 -->
		<view class="reply-input-container" v-if="showInput">
			<view class="input-wrapper">
				<input 
					class="reply-input" 
					v-model="replyContent" 
					:placeholder="replyPlaceholder"
					focus
					confirm-type="send"
					@confirm="submitReply"
				/>
				<button class="send-btn" :disabled="!replyContent.trim()" @click="submitReply">发送</button>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				commentId: '', // 当前评论ID
				parentId: '', // 父评论ID，用于无限层级
				sourceType: '', // 评论来源类型（文章、帖子等）
				sourceId: '', // 评论来源ID
				pageTitle: '评论详情',
				loading: true,
				hasError: false,
				mainComment: null, // 主评论
				commentList: [], // 回复列表
				page: 1,
				pageSize: 20,
				hasMore: false,
				totalReplies: 0,
				
				// 回复相关
				showInput: false,
				replyContent: '',
				replyToId: '', // 回复的评论ID
				replyToUserName: '', // 回复的用户名
				replyPlaceholder: '写回复...'
			}
		},
		onLoad(options) {
			// 获取参数
			if (options.id) {
				this.commentId = options.id;
			}
			if (options.parentId) {
				this.parentId = options.parentId;
			}
			if (options.sourceType) {
				this.sourceType = options.sourceType;
			}
			if (options.sourceId) {
				this.sourceId = options.sourceId;
			}
			
			// 加载评论详情
			this.loadCommentDetail();
			// 加载回复列表
			this.loadReplies();
		},
		methods: {
			// 加载评论详情
			loadCommentDetail() {
				this.loading = true;
				this.hasError = false;
				
				// 调用API获取评论详情
				this.$api('getCommentDetail', {
					id: this.commentId
				}, res => {
					this.loading = false;
					
					if (res.code === 200) {
						this.mainComment = res.result;
						// 获取回复总数
						this.totalReplies = res.result.replyNum || 0;
					} else {
						this.hasError = true;
						uni.showToast({
							title: res.message || '加载失败',
							icon: 'none'
						});
					}
				});
			},
			
			// 加载回复列表
			loadReplies() {
				// 使用现有的评论列表接口，传入pid参数
				this.$api('getCommentPage', {
					pid: this.commentId,
					page: this.page,
					pageSize: this.pageSize
				}, res => {
					if (res.code === 200) {
						if (this.page === 1) {
							this.commentList = res.result.records || [];
						} else {
							this.commentList = [...this.commentList, ...(res.result.records || [])];
						}
						
						// 判断是否有更多数据
						this.hasMore = this.commentList.length < res.result.total;
					} else {
						uni.showToast({
							title: res.message || '加载回复失败',
							icon: 'none'
						});
					}
				});
			},
			
			// 加载更多回复
			loadMoreReplies() {
				this.page++;
				this.loadReplies();
			},
			
			// 显示回复输入框
			showReplyInput(commentId, userName = '') {
				this.showInput = true;
				this.replyToId = commentId;
				this.replyToUserName = userName;
				this.replyPlaceholder = userName ? `回复 @${userName}` : '写回复...';
				this.replyContent = '';
			},
			
			// 提交回复
			submitReply() {
				if (!this.replyContent.trim()) return;
				
				// 调用API提交回复
				this.$api('addComment', {
					userValue: this.replyContent,
					pid: this.commentId,
					replyToId: this.replyToId,
					replyToUserName: this.replyToUserName,
					type: this.sourceType,
					orderId: this.sourceId
				}, res => {
					if (res.code === 200) {
						// 清空输入框
						this.replyContent = '';
						this.showInput = false;
						
						// 重新加载回复列表
						this.page = 1;
						this.loadReplies();
						
						// 更新回复总数
						this.totalReplies++;
						
						uni.showToast({
							title: '回复成功',
							icon: 'success'
						});
					} else {
						uni.showToast({
							title: res.message || '回复失败',
							icon: 'none'
						});
					}
				});
			},
			
			// 导航到子评论详情
			navigateToSubComment(comment) {
				if (comment.replyNum > 0) {
					uni.navigateTo({
						url: `/pages_order/comment/commentDetail?id=${comment.id}&parentId=${this.commentId}&sourceType=${this.sourceType}&sourceId=${this.sourceId}`
					});
				}
			},
			
			// 返回上一页
			navigateBack() {
				uni.navigateBack();
			},
			
			// 预览图片
			previewImage(images, index) {
				uni.previewImage({
					urls: images,
					current: index
				});
			},
			
			// 格式化时间
			formatTime(timestamp) {
				if (!timestamp) return '';
				
				const now = new Date().getTime();
				const diff = now - timestamp;
				
				// 小于1分钟
				if (diff < 60000) {
					return '刚刚';
				}
				
				// 小于1小时
				if (diff < 3600000) {
					return Math.floor(diff / 60000) + '分钟前';
				}
				
				// 小于24小时
				if (diff < 86400000) {
					return Math.floor(diff / 3600000) + '小时前';
				}
				
				// 小于30天
				if (diff < 2592000000) {
					return Math.floor(diff / 86400000) + '天前';
				}
				
				// 大于30天显示具体日期
				const date = new Date(timestamp);
				return `${date.getFullYear()}-${date.getMonth() + 1}-${date.getDate()}`;
			}
		}
	}
</script>

<style lang="scss" scoped>
.comment-detail-container {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
	background-color: #f5f5f5;
	padding-bottom: 100rpx;
}

.loading-container {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	margin-top: 200rpx;
	
	.loading-spinner {
		width: 80rpx;
		height: 80rpx;
		border: 6rpx solid #f3f3f3;
		border-top: 6rpx solid $uni-color-primary;
		border-radius: 50%;
		animation: spin 1s linear infinite;
		margin-bottom: 20rpx;
	}
	
	.loading-text {
		font-size: 28rpx;
		color: #666;
	}
	
	@keyframes spin {
		0% { transform: rotate(0deg); }
		100% { transform: rotate(360deg); }
	}
}

.error-container {
	display: flex;
	flex-direction: column;
	align-items: center;
	margin-top: 200rpx;
	
	.error-text {
		font-size: 28rpx;
		color: #999;
		margin-bottom: 30rpx;
	}
	
	.retry-button {
		background-color: $uni-color-primary;
		color: #fff;
		font-size: 28rpx;
		padding: 16rpx 40rpx;
		border-radius: 40rpx;
		border: none;
	}
}

.main-comment {
	background-color: #fff;
	padding: 30rpx;
	margin-bottom: 20rpx;
	
	.comment-header {
		display: flex;
		align-items: center;
		margin-bottom: 20rpx;
		
		.avatar {
			width: 80rpx;
			height: 80rpx;
			border-radius: 50%;
			margin-right: 20rpx;
			background-color: #f0f0f0;
		}
		
		.user-info {
			flex: 1;
			
			.username {
				font-size: 28rpx;
				font-weight: bold;
				color: #333;
				margin-bottom: 6rpx;
			}
			
			.time {
				font-size: 24rpx;
				color: #999;
			}
		}
	}
	
	.comment-content {
		font-size: 30rpx;
		color: #333;
		line-height: 1.6;
		margin-bottom: 20rpx;
	}
	
	.comment-images {
		margin-bottom: 20rpx;
		
		.image-grid {
			display: flex;
			flex-wrap: wrap;
			
			.comment-image {
				width: 200rpx;
				height: 200rpx;
				margin-right: 10rpx;
				margin-bottom: 10rpx;
				border-radius: 8rpx;
				background-color: #f0f0f0;
			}
		}
	}
	
	.comment-footer {
		display: flex;
		justify-content: space-between;
		align-items: center;
		padding-top: 20rpx;
		border-top: 1px solid #f0f0f0;
		
		.reply-count {
			font-size: 26rpx;
			color: #666;
		}
		
		.reply-btn {
			display: flex;
			align-items: center;
			
			text {
				font-size: 26rpx;
				color: #666;
				margin-left: 6rpx;
			}
		}
	}
}

.replies-container {
	background-color: #fff;
	
	.reply-item {
		padding: 30rpx;
		border-bottom: 1px solid #f0f0f0;
		
		&:active {
			background-color: #f9f9f9;
		}
		
		.reply-header {
			display: flex;
			align-items: center;
			margin-bottom: 16rpx;
			
			.avatar {
				width: 70rpx;
				height: 70rpx;
				border-radius: 50%;
				margin-right: 16rpx;
				background-color: #f0f0f0;
			}
			
			.user-info {
				flex: 1;
				
				.username {
					font-size: 26rpx;
					font-weight: bold;
					color: #333;
					margin-bottom: 4rpx;
				}
				
				.time {
					font-size: 22rpx;
					color: #999;
				}
			}
		}
		
		.reply-content {
			font-size: 28rpx;
			color: #333;
			line-height: 1.5;
			margin-bottom: 16rpx;
			padding-left: 86rpx;
			
			.reply-to {
				display: inline;
				
				.reply-username {
					color: $uni-color-primary;
				}
			}
		}
		
		.reply-images {
			padding-left: 86rpx;
			margin-bottom: 16rpx;
			
			.image-grid {
				display: flex;
				flex-wrap: wrap;
				
				.reply-image {
					width: 150rpx;
					height: 150rpx;
					margin-right: 10rpx;
					margin-bottom: 10rpx;
					border-radius: 8rpx;
					background-color: #f0f0f0;
				}
			}
		}
		
		.reply-footer {
			display: flex;
			justify-content: space-between;
			align-items: center;
			padding-left: 86rpx;
			
			.reply-info {
				.sub-reply-count {
					font-size: 24rpx;
					color: $uni-color-primary;
				}
			}
			
			.reply-btn {
				display: flex;
				align-items: center;
				
				text {
					font-size: 24rpx;
					color: #666;
					margin-left: 4rpx;
				}
			}
		}
	}
}

.load-more {
	text-align: center;
	padding: 30rpx 0;
	
	text {
		font-size: 26rpx;
		color: #666;
	}
}

.reply-input-container {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	background-color: #fff;
	padding: 20rpx 30rpx;
	box-shadow: 0 -2rpx 10rpx rgba(0, 0, 0, 0.05);
	z-index: 100;
	padding-bottom: env(safe-area-inset-bottom);
	
	.input-wrapper {
		display: flex;
		align-items: center;
		
		.reply-input {
			flex: 1;
			height: 70rpx;
			background-color: #f5f5f5;
			border-radius: 35rpx;
			padding: 0 30rpx;
			font-size: 28rpx;
		}
		
		.send-btn {
			margin-left: 20rpx;
			background-color: $uni-color-primary;
			color: #fff;
			font-size: 28rpx;
			height: 70rpx;
			line-height: 70rpx;
			padding: 0 30rpx;
			border-radius: 35rpx;
			
			&[disabled] {
				background-color: #cccccc;
			}
		}
	}
}
</style>