<template>
	<view class="container bg-drak" :class="{ 'margin-bottom-big': !empty }">
		<!-- <view class="top-bg">
			<view class="top-kuang">
				<view class="top-title">购物车</view>
			</view>
		</view> -->
		<!-- 00. 未授权登录 -->
		<!-- <use-empty v-if="!islogin" e-style="round" e-type="unauthorized" tip="当前未授权" btn-tip="去登录" height="70vh"
			:auto="false" @goto="tologin">11</use-empty> -->
		<!-- 00. 空白页 -->
		<use-empty v-if="empty" :auto="true" e-style="round" e-type="cart" tip="购物车数据为空" height="70vh"></use-empty>
		<!-- 00. 列表 -->
		<view v-else>
			<!-- 01. 购物车列表1 -->
			<view class="cart-list padding-sm">
				<block v-for="(item, index) in cartDatas" :key="index">
					<view class="cart-item bg-main margin-bottom-sm padding-lg pos-r dflex-s border-radius">
						<view class="image-wrapper pos-r" @click="togoods(item)">
							<!-- 商品图片 -->
							<image class="border-radius-xs wh-full" mode="aspectFill" :lazy-load="true" :src="item.goodsMasterImg"></image>
							<!-- 选中|未选中按钮 -->
							<view
								v-if="item.limitNum > 0 && item.limitNum >= item.goodsCount"
								class="iconfont checkbox pos-a bg-main border-radius-big"
								:class="{ active: item.check, iconxuanzhongzhuangtai: item.check, iconweixuanzhongzhuangtai: !item.check }"
								@tap.stop="check('item', index)"
							></view>

							<view v-if="item.limitNum < item.goodsCount" class="disabled dflex-c dflex-flow-c pos-a pos-tl-c border-radius-c">
								<text>库存不足</text>
								<text class="margin-left-xs fs-xs" v-if="item.limitNum > 0">剩余 {{ item.limitNum }}</text>
							</view>
						</view>
						<view class="item-right padding-left pos-r">
							<!-- 商品名称 -->
							<view class="clamp-2 title" @click="togoods(item)">{{ item.goodsName }}</view>
							<view class="ft-dark fs-xs padding-top-xs">{{ item.goodAttr || '&nbsp;&nbsp;' }}</view>
							<view class="padding-tb-sm">
								<text class="price">{{ item.goodsActualPrice }}</text>
								<text class="m-price" v-if="item.marketPrice > 0">{{ item.marketPrice }}</text>
							</view>

							<!-- + - 购物车数量 -->
							<use-number-box
								:min="1"
								:max="item.limitNum || 1"
								:value="item.goodsCount"
								:is-max="item.goodsCount >= item.limitNum"
								:is-min="item.goodsCount === 1"
								:index="index"
								:disabled="item.goodsCount >= item.limitNum"
								@eventChange="numberChange"
							></use-number-box>
						</view>

						<!-- 删除 -->
						<view class="del-btn iconfont iconlajitong-01 pos-a border-radius-c dflex-c ft-dark fs-xl" @tap.stop="deleteCart(item.key)"></view>
					</view>
				</block>
			</view>

			<!-- 02. 底部操作栏 -->
			<view class="action-section dflex w-full bg-main pos-f padding-right">
				<view class="checkbox pos-r h-full dflex-c">
					<view
						class="padding-lr iconfont"
						:class="{ active: allChecked, iconxuanzhongzhuangtai: allChecked, iconweixuanzhongzhuangtai: !allChecked }"
						@click="check('all')"
					></view>
					<view class="clear-btn pos-a tac ft-white" :class="{ show: allChecked }" @click="clearCart">清空</view>
				</view>
				<view class="total-box flex1 tar padding-right-lg">
					<text class="price">{{ total || 0 }}</text>
				</view>
				<button type="primary" class="payment no-border border-radius-lg fs" @click="createOrder()">去结算</button>
			</view>
		</view>

		<!-- 03. 猜你喜欢 -->
		<use-hot-goods :datas="goodsHotDatas" title-type="round" title="热门推荐"></use-hot-goods>
		<view style="width: 100%; height: 100px"></view>
		<!-- <tabbar :current-page="2"></tabbar> -->
	</view>
</template>

<script>
import { goodscart, cartcheck, cartcheckpiliang, changecart, deletecart, clearcart } from '../../utils/api_cart.js'
import { goodslistlimit } from '../../utils/api_home.js'
// import tabbar from '../tabbar.vue'
import useHotGoods from '../../components/use-hot-goods/use-hot-goods.vue'
import useNumberBox from '../../components/use-number-box/use-number-box.vue'
import useEmpty from '../../components/use-empty/use-empty.vue'
export default {
	components: {
		useNumberBox,
		useHotGoods,
		useEmpty
		// tabbar
	},
	data() {
		return {
			// 空白页
			empty: false, //false
			// 购物车数据
			cartDatas: [
				// {goods:{name:'111'}}
			],
			// countType:'',//商品类型数量
			// 全选状态
			allChecked: false,
			// 总价格
			total: 0,
			// 热门推荐
			goodsHotDatas: []
		}
	},
	watch: {
		//显示空白页
		cartDatas(e) {
			console.log(e, 'e')
			let empty = e.length === 0
			if (this.empty !== empty) {
				this.empty = empty
			}
		}
	},
	// 监听页面显示。页面每次出现在屏幕上都触发，包括从下级页面点返回露出当前页面
	onShow() {
		this.loadData()
		this.get_good_hot()
		var j = 0
		for (var i = 0; i < this.cartDatas.length; i++) {
			if (this.cartDatas[index].check) {
				j++
			}
		}
		if (j == this.cartDatas.length) {
			this.allChecked = true
		} else {
			this.allChecked = false
		}
	},
	// 下拉刷新
	onPullDownRefresh() {
		this.loadData(() => {
			uni.stopPullDownRefresh()
		})
	},

	methods: {
		//请求数据
		loadData(callback) {
			var _self = this
			_self.cartDatas = []
			var header = {
				'Mall-Token': uni.getStorageSync('tokenId')
			}
			goodscart(header).then((res) => {
				if (res.success) {
					if (res.data.items == null) {
					} else {
						let _cartDatas = []
						res.data.items.forEach((data) => {
							_self.cartDatas.push(data)
						})
						//计算总价
						_self.calcTotal()
						if (typeof callback === 'function') {
							// 数据加载完成回调函数
							callback()
						}
					}
				}
			})
			// // 更改为临时表方式查询
			// const goodsTemp = db.collection('usemall-goods').getTemp();
			// const goodsSkuTemp = db.collection('usemall-goods-sku').getTemp();

			// db.collection(_cart, goodsTemp, goodsSkuTemp)
			// 	.where('create_uid == $env.uid')
			// 	.field(
			// 		'_id, goodsCount, goods_sku.spec, goods.price, goods.market_price, limitNum, goods.name,goods.name_pw ,last_modify_time, goods._id as goods_id, goods.img, goods.state'
			// 	)
			// 	.orderBy('last_modify_time desc')
			// 	.get()
			// 	.then(res => {
			// 		if (res && res.result && res.result.errCode === 0) {
			// 			let _cartDatas = [];
			// 			res.result.data.forEach(x => {
			// 				x.goods = x.goods[0];
			// 				x.goods_id = x.goods_id[0];
			// 				x.goods_sku = x.goods_sku[0] || {};

			// 				if (x.goods && x.goods_id) _cartDatas.push(x);
			// 			});
			// 			// 购物车数据
			// 			this.cartDatas = _cartDatas;
			// 			console.log('购',this.cartDatas)
			// 			// 计算总价
			// 			this.calcTotal();

			// 			if (typeof callback === 'function') {
			// 				// 数据加载完成回调函数
			// 				callback();
			// 			}
			// 		}
			// 	})
			// return;
		},
		// 热门推荐
		get_good_hot() {
			let _self = this
			_self.goodsHotDatas = []
			var data = '?hot=1&state=1'
			goodslistlimit(data).then((res) => {
				if (res.success) {
					var total = res.data.totalCount
					data = '?hot=1&state=1&pageSize=' + total
					goodslistlimit(data).then((res) => {
						if (res.success) {
							res.data.list.forEach((data) => {
								_self.goodsHotDatas.push(data)
							})
						} else {
							_self.$message.warning('没有符合条件的数据！')
						}
					})
				}
			})
		},
		// 跳转登录页
		tologin() {
			this.$api.tologin()
		},
		// 跳转商品页
		togoods(item) {
			this.$api.togoods({
				id: item.goodsId
			})
		},

		// 选中状态处理
		check(type, index) {
			var _self = this
			if (type === 'item') {
				_self.cartDatas[index].check = !_self.cartDatas[index].check
				if (_self.cartDatas[index].check) {
					var check = 1
				} else {
					var check = 0
				}
				var j = 0
				for (var i = 0; i < _self.cartDatas.length; i++) {
					if (_self.cartDatas[index].check) {
						j++
					}
				}
				if (j == _self.cartDatas.length) {
					_self.allChecked = true
				} else {
					_self.allChecked = false
				}
				//购物车选中或取消
				var header = {
					'Mall-Token': uni.getStorageSync('tokenId')
				}
				console.log(_self.cartDatas[index].key, 'check')
				var params = _self.cartDatas[index].key
				var data = check
				cartcheck(params, data, header).then((res) => {
					if (res.success) {
						_self.calcTotal()
					}
				})
			} else {
				const check = !_self.allChecked
				var keys = []
				var k2 = ''
				_self.cartDatas.forEach((item) => {
					item.check = check
					_self.allChecked = check
					keys.push(item.key)
				})
				_self.allChecked = check
				if (_self.allChecked) {
					var check2 = 1
				} else {
					var check2 = 0
				}
				k2 = keys.toString()
				//购物车批量选中或取消
				var params = '?check=' + check2 + '&keys=' + k2
				var header = {
					'Mall-Token': uni.getStorageSync('tokenId')
				}
				cartcheckpiliang(params, header).then((res) => {
					if (res.success) {
						_self.calcTotal()
					}
				})
			}

			_self.calcTotal()
		},
		// +- 数量
		numberChange(data) {
			var _self = this
			let cart = _self.cartDatas[data.index]
			var num = data.number - _self.cartDatas[data.index].goodsCount
			changecart
			//修改购物车接口
			var params = '?num=' + num + '&goodId=' + cart.goodsId
			var header = {
				'Mall-Token': uni.getStorageSync('tokenId')
			}
			changecart(params, header).then((res) => {
				if (res.success) {
					_self.loadData()
				}
				_self.$api.msg(res.msg)
			})

			// this.$db[_cart].update(cart._id, {
			// 	countType: data.number
			// }).then(res => {
			// 	if (res.code === 200) {
			// 		cart.countType = data.number;
			// 		this.calcTotal();
			// 		return;
			// 	}
			// 	this.$api.msg(res.msg);
			// });
		},
		// 删除
		deleteCart(id) {
			let _self = this
			uni.showModal({
				title: '提示',
				content: '删除购物车',
				success: function (res) {
					if (res.confirm) {
						var params = id
						var header = {
							'Mall-Token': uni.getStorageSync('tokenId')
						}
						deletecart(params, header).then((res) => {
							if (res.success) {
								_self.loadData()
							}
							_self.$api.msg(res.msg)
						})
						// _self.$db[_cart].where('create_uid == $env.uid').remove(id)
						// 	.then(res => {
						// 		if (res.code === 200) {
						// 			_self.loadData();
						// 		}
						// 	})
					} else if (res.cancel) {
					}
				}
			})
		},
		// 清空
		clearCart() {
			let _self = this
			uni.showModal({
				title: '提示',
				content: '清空购物车',
				success: function (res) {
					if (res.confirm) {
						var header = {
							'Mall-Token': uni.getStorageSync('tokenId')
						}
						clearcart(header).then((res) => {
							if (res.success) {
								_self.loadData()
							}
							_self.$api.msg(res.msg)
						})
						// _self.$db[_cart].where('create_uid == $env.uid').remove()
						// 	.then(res => {
						// 		if (res.code === 200) {
						// 			_self.cartDatas = [];
						// 			return;
						// 		}
						// 		_self.$api.msg(res.msg)
						// 	})
					} else if (res.cancel) {
					}
				}
			})
		},
		// 计算总价
		calcTotal() {
			if (this.cartDatas.length === 0) {
				this.empty = true
				return
			}

			let total = 0,
				check = true

			this.cartDatas.forEach((item) => {
				if (item.check) {
					// 存在库存
					if (item.limitNum > 0 && item.limitNum >= item.goodsCount) {
						total += item.goodsActualPrice * item.goodsCount
					}
				} else if (check) {
					check = false
				}
			})

			this.allChecked = check
			this.total = Number(total.toFixed(2))
		},
		// 创建订单
		createOrder() {
			let cart_ids = []
			let skuId = []
			this.cartDatas.forEach((item) => {
				// 选中有库存购物车
				if (item.check && item.limitNum > 0 && item.limitNum > item.goodsCount) {
					cart_ids.push(item.goodsId)
					skuId.push(item.skuId)
				}
			})
			if (cart_ids.length <= 0) {
				this.$api.msg('请选择结算商品')
				return
			}
			uni.navigateTo({
				url: `/packageShang/pages/order/create?cart_ids=${cart_ids.join(',')}&type=2&skuId=${skuId.join(',')}`
			})
		}
	}
}
</script>

<style lang="scss">
@import url('/packageShang/components/iconfont/iconfont.css');
@import url('/packageShang/common/common.scss');
page {
	min-height: 100%;
}
/* 顶部背景 */
.top-bg {
	width: 100%;
	height: 196rpx;
	background: rgba(255, 255, 255, 1);

	.top-kuang {
		width: 100%;
		height: 176rpx;
		background: rgba(255, 255, 255, 1);
		box-shadow: 0px 2rpx 0px rgba(236, 236, 236, 1);
		.top-title {
			padding: 106rpx 0 0 0rpx;
			text-align: center;
			font-size: 36rpx;
			font-weight: 500;
			line-height: 52rpx;
			color: rgba(0, 0, 0, 1);
		}
	}
}

/* 购物车列表项 */
.cart-item {
	&:last-child {
		margin-bottom: 0;
	}

	.image-wrapper {
		width: 230rpx;
		height: 230rpx;
		flex-shrink: 0;

		image {
			opacity: 1;
		}
	}

	.checkbox {
		top: -16rpx;
		left: -16rpx;
		color: $font-color-disabled;
		line-height: 1;
		font-size: 46rpx;
		padding: 5rpx;
		z-index: 8;
	}

	.disabled {
		color: #fff !important;
		width: 70%;
		height: 70%;
		background-color: rgba(51, 51, 51, 0.5);
	}

	.item-right {
		width: 140px;
		height: 260rpx;
		overflow: hidden;
	}

	.del-btn {
		bottom: 30rpx;
		right: 30rpx;
		width: 70rpx;
		height: 70rpx;
	}
}

/* 底部栏 */
.action-section {
	z-index: 999;
	bottom: 0px;
	height: 100rpx;

	.checkbox {
		.iconfont {
			font-size: 46rpx;
			color: #2c405a;
		}
	}

	.clear-btn {
		left: 100rpx;
		background: #2c405a;
		border-radius: 0 50rpx 50rpx 0;
		padding: 12rpx 0;
		transition: all 0.2s;

		width: 0;
		opacity: 0;

		&.show {
			width: 120rpx;
			opacity: 1;
		}
	}

	.payment {
		padding: 0 40rpx;
		font-size: $font-base;
		background: $uni-color-primary;
	}
}

/* #ifdef H5 || MP-360 */
.action-section {
	margin-bottom: 50px;
}

/* #endif */
</style>
