<template>
	<view class="page">
		<navbar/>

		<view class="user">
			<uv-checkbox-group 
			shape="circle"
			v-model="checkboxValue">
				
				<uv-swipe-action>
					<view
					v-for="(item, index) in list.records"
					:key="index">
						<view style="margin-top: 20rpx;"></view>
						<uv-swipe-action-item 
						:options="options"
						@click="delCart(item, index)">
							<view class="item">
								<view class="checkbox">
									<uv-checkbox
										:name="item.id"
										activeColor="#FA5A0A"
										size="40rpx"
										icon-size="35rpx"
									></uv-checkbox>
								</view>
								
								<image 
								class="image"
								:src="item.pic || 'https://img95.699pic.com/photo/50058/1378.jpg_wh860.jpg'" 
								mode=""></image>
								
								<view class="info">
									<view class="title">
										<view class="">
											{{ item.name }}
										</view>
										<view class="">
											<uv-number-box v-model="item.num" 
											@change="e => valChange(item, e)"></uv-number-box>
										</view>
									</view>
									<view class="unit">
										规格：{{ item.title }}
										<uv-icon name="arrow-down"></uv-icon>
									</view>
									<view class="price">
										￥<text>{{ item.price }}</text>元
									</view>
								</view>
							</view>
						</uv-swipe-action-item>
					</view>
				</uv-swipe-action>
			</uv-checkbox-group>
			
			<view class="action">
				<view class="icon">
					<image src="/static/image/cart/1.png" mode=""></image>
					<view class="num">
						{{ checkboxValue.length }}
					</view>
				</view>
				<view class="price">
					<view class="count">
						合计
						<view class="">
							￥<text>{{ totalPrice }}</text>
						</view>
					</view>
					<view class="text">
						共{{ checkboxValue.length }}件，已享受更低优惠
					</view>
				</view>
				<view class="btn">
					去结算
				</view>
			</view>
		</view>

		<tabber select="3" />
	</view>
</template>

<script>
	import tabber from '@/components/base/tabbar.vue'
	export default {
		components: {
			tabber,
		},
		data() {
			return {
				value : 0,
				checkboxValue : [],
				options: [
					{
						text: '删除',
						style: {
							backgroundColor: '#FA5A0A'
						}
					},
				],
				queryParams: {
					pageNo: 1,
					pageSize: 10
				},
				list : [],
			}
		},
		computed: {
			totalPrice(){
				if (!this.checkboxValue.length) {
					return 0
				}
				let price = 0
				this.list.records.forEach(n => {
					if(this.checkboxValue.includes(n.id)){
						price += n.price * n.num
					}
				})
				return price
			},
		},
		onShow() {
			this.getData()
		},
		//滚动到屏幕底部
		onReachBottom() {
			if(this.queryParams.pageSize < this.list.total){
				this.queryParams.pageSize += 10
				this.getData()
			}
		},
		methods: {
			valChange(item, e){
				console.log(e.value);
				this.$api('cartNum', {
					id : item.id,
					num : e.value,
				})
			},
			// 购物车分页
			getData(){
				this.$api('cartPage', this.queryParams, res => {
					if(res.code == 200){
						this.list = res.result
					}
				})
			},
			// 删除购物车
			delCart(item, index){
				this.$api('cartDel', {
					id : item.id
				}, res => {
					if(res.code == 200){
						this.getData()
						uni.showToast({
							title: '删除成功',
						});
					}
				})
			},
		}
	}
</script>

<style scoped lang="scss">
	.page {
		/deep/ .uv-swipe-action{
			width: 100%;
		}
	}

	.user {
		.item{
			background-color: #fff;
			display: flex;
			padding: 30rpx;
			.checkbox{
				display: flex;
				justify-content: center;
				align-items: center;
			}
			.image{
				width: 200rpx;
				height: 200rpx;
				border-radius: 20rpx;
			}
			.info{
				flex: 1;
				.title{
					display: flex;
					padding: 10rpx 20rpx;
					justify-content: space-between;
					
				}
				.unit{
					font-size: 24rpx;
					padding: 10rpx 20rpx;
					color: #717171;
					display: flex;
					align-items: center;
				}
				.price{
					color: $uni-color;
					font-size: 28rpx;
					padding: 10rpx 20rpx;
					text{
						font-size: 36rpx;
						font-weight: 900;
					}
				}
			}
		}
		.action{
			width: 700rpx;
			position: fixed;
			bottom: 220rpx;
			left: 25rpx;
			background-color: #fff;
			height: 100rpx;
			border-radius: 50rpx;
			box-shadow: 0 0 6rpx 6rpx #00000010;
			display: flex;
			justify-content: center;
			align-items: center;
			overflow: hidden;
			.icon{
				position: relative;
				width: 80rpx;
				height: 80rpx;
				margin: 0 20rpx;
				image{
					width: 80rpx;
					height: 80rpx;
				}
				.num{
					position: absolute;
					right: 10rpx;
					top: 0rpx;
					background-color: $uni-color;
					color: #fff;
					font-size: 18rpx;
					border-radius: 50%;
					height: 30rpx;
					width: 30rpx;
					display: flex;
					justify-content: center;
					align-items: center;
				}
			}
			.price{
				.count{
					display: flex;
					font-size: 26rpx;
					align-items: center;
					view{
						color: $uni-color;
						margin-left: 10rpx;
						text{
							font-size: 32rpx;
							font-weight: 900;
						}
					}
				}
				.text{
					font-size: 20rpx;
					color: #717171;
				}
			}
			.btn{
				margin-left: auto;
				background-color: $uni-color;
				height: 100%;
				padding: 0 50rpx;
				color: #fff;
				display: flex;
				justify-content: center;
				align-items: center;
			}
		}
	}
</style>