<template>
	<!-- 商品款式选择弹窗 -->
	<view v-if="showStylePopup" class="style-popup-mask">
		<view class="style-popup">
			<view class="style-popup-header">
				<text class="style-popup-close" @click="close">关闭</text>
				<text class="style-popup-title">选择回收款式</text>
			</view>
			<view class="style-popup-brand-info">
				<image :src="brandInfo.logo" class="brand-logo" mode="aspectFit" />
				<text class="brand-name">{{ brandInfo.name }}</text>
			</view>
			<scroll-view class="style-popup-list" scroll-y>
				<view class="style-grid">
					<view v-for="(item, index) in styleList" :key="item.id" class="style-item" @click="selectStyle(item, index)">
						<view class="style-item-content">
							<view class="image-container">
								<image :src="item.image" class="style-image" mode="aspectFill" />
								<view class="style-quantity">
									<button class="btn-minus" @click.stop="updateQuantity(index, -1)">-</button>
									<text class="quantity">{{ item.quantity || 0 }}</text>
									<button class="btn-plus" @click.stop="updateQuantity(index, 1)">+</button>
								</view>
							</view>
							<text class="style-name">{{ item.name }}</text>
						</view>
					</view>
				</view>
			</scroll-view>
			<view class="style-popup-footer">
				<button class="next-btn" @click="nextStep" :disabled="!hasSelectedItems">下一步</button>
			</view>
		</view>
	</view>
</template>

<script>
export default {
	name: 'ProductStyleSelector',
	data() {
		return {
			showStylePopup: false,
			brandInfo: {
				id: '',
				name: '',
				logo: ''
			},
			styleList: [],
			currentProductId: null,
			existingQuantities: {}
		}
	},
	computed: {
		hasSelectedItems() {
			return this.styleList.some(item => (item.quantity || 0) > 0)
		}
	},
	methods: {
		// 打开款式选择弹窗
		open(brandInfo, productId, existingQuantities = {}) {
			if (!brandInfo || !productId) {
				console.error('brandInfo and productId are required')
				return
			}
			this.brandInfo = brandInfo
			this.currentProductId = productId
			this.existingQuantities = existingQuantities
			this.getProductStyles(brandInfo.id, productId)
			this.showStylePopup = true
		},
		
		// 关闭弹窗
		close() {
			this.showStylePopup = false
			this.styleList = []
			this.brandInfo = { id: '', name: '', logo: '' }
			this.currentProductId = null
			this.existingQuantities = {}
			this.$emit('close')
		},
		
		// 选择款式
		selectStyle(item, index) {
			// 点击款式项时的处理逻辑
			console.log('Selected style:', item)
		},
		
		// 更新数量
		updateQuantity(index, delta) {
			const item = this.styleList[index]
			if (!item) return
			
			let newQuantity = (item.quantity || 0) + delta
			if (newQuantity < 0) newQuantity = 0
			
			this.$set(item, 'quantity', newQuantity)
		},
		
		// 获取商品款式列表
		getProductStyles(brandId, productId) {
			const params = {
				brandId: brandId,
				productId: productId
			}
			
			this.$api('getGoodsBrandProduct', params, res => {
				if (res && res.success && res.result && res.result) {
					this.styleList = res.result.map(item => {
						const uniqueKey = `${brandId}_${item.id}`
						const existingQty = this.existingQuantities[uniqueKey] || 0
						return {
							id: item.id,
							name: item.name,
							image: item.image || '/static/default-product.png',
							minPrice: item.minPrice,
							maxPrice: item.maxPrice,
							brandId: item.brandId,
							shopId: item.shopId,
							quantity: existingQty,
							...item
						}
					})
				} else {
					this.styleList = []
				}
			})
		},
		
		// 下一步
		nextStep() {
			const selectedItems = this.styleList.filter(item => (item.quantity || 0) > 0)
			
			if (selectedItems.length === 0) {
				uni.showToast({
					title: '请选择至少一个款式',
					icon: 'none'
				})
				return
			}
			
			this.$emit('style-confirm', {
				brandInfo: this.brandInfo,
				selectedStyles: selectedItems
			})
			this.close()
		}
	}
}
</script>

<style lang="scss" scoped>
.style-popup-mask {
	position: fixed;
	left: 0;
	right: 0;
	top: 0;
	bottom: 0;
	background: rgba(0,0,0,0.35);
	z-index: 3000;
	display: flex;
	align-items: flex-end;
	justify-content: center;
}

.style-popup {
	position: relative;
	width: 100%;
	max-width: 750px;
	background: #fff;
	border-radius: 32rpx 32rpx 0 0;
	box-shadow: 0 -4rpx 24rpx rgba(0,0,0,0.08);
	height: 94vh;
	display: flex;
	flex-direction: column;
	overflow: hidden;
}

.style-popup-header {
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 32rpx 24rpx 0 24rpx;
	font-size: 32rpx;
	font-weight: bold;
	position: relative;
}

.style-popup-close {
	position: absolute;
	left: 24rpx;
	font-size: 28rpx;
	color: #888;
}

.style-popup-title {
	font-size: 32rpx;
	color: #222;
	font-weight: bold;
}

.style-popup-brand-info {
	display: flex;
	align-items: center;
	padding: 20rpx 24rpx;
	border-bottom: 1px solid #f0f0f0;
}

.brand-logo {
	width: 60rpx;
	height: 60rpx;
	border-radius: 8rpx;
	margin-right: 20rpx;
	background: #f8f8f8;
}

.brand-name {
	font-size: 28rpx;
	color: #222;
	font-weight: bold;
}

.style-popup-list {
	flex: 1;
	overflow-y: auto;
	padding: 0 24rpx;
	box-sizing: border-box;
	scrollbar-width: none;
	-ms-overflow-style: none;
	&::-webkit-scrollbar {
		width: 0 !important;
		display: none;
	}
}

.style-grid {
	display: flex;
	flex-wrap: wrap;
	gap: 20rpx;
	padding: 20rpx 0;
}

.style-item {
	width: calc((100% - 40rpx) / 3);
	display: flex;
	flex-direction: column;
	align-items: center;
	border-radius: 16rpx;
	background: #fff;
	box-sizing: border-box;
}

.style-item-content {
	display: flex;
	flex-direction: column;
	align-items: center;
	width: 100%;
}

.image-container {
	position: relative;
	width: 100%;
	height: 200rpx;
	margin-bottom: 16rpx;
}

.style-image {
	width: 100%;
	height: 100%;
	border-radius: 12rpx;
	background: #f8f8f8;
}

.style-name {
	font-size: 24rpx;
	color: #222;
	font-weight: 500;
	text-align: center;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	width: 100%;
}

.style-quantity {
	position: absolute;
	bottom: 8rpx;
	left: 50%;
	transform: translateX(-50%);
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgba(255, 255, 255, 0.9);
	border-radius: 24rpx;
	padding: 4rpx 8rpx;
}

.btn-minus, .btn-plus {
	width: 40rpx;
	height: 40rpx;
	border-radius: 50%;
	background: #fff;
	border: 1px solid #ddd;
	color: #333;
	font-size: 20rpx;
	display: flex;
	align-items: center;
	justify-content: center;
	margin: 0;
	padding: 0;
	box-shadow: 0 2rpx 4rpx rgba(0,0,0,0.1);
	
	&::after {
		border: none;
	}
	
	&:active {
		background: #f0f0f0;
	}
}

.quantity {
	width: 32rpx;
	text-align: center;
	font-size: 20rpx;
	color: #333;
	margin: 0 8rpx;
	font-weight: bold;
}

.style-popup-footer {
	padding: 20rpx 24rpx;
	border-top: 1px solid #f0f0f0;
	background: #fff;
}

.next-btn {
	width: 100%;
	height: 88rpx;
	background: linear-gradient(to right, #ffd01e, #ff8917);
	border-radius: 44rpx;
	color: #fff;
	font-size: 32rpx;
	font-weight: bold;
	border: none;
	display: flex;
	align-items: center;
	justify-content: center;
	
	&::after {
		border: none;
	}
	
	&:disabled {
		background: #ccc;
		color: #999;
	}
	
	&:active:not(:disabled) {
		opacity: 0.9;
	}
}
</style>