<template>
	<view class="page">
		<uni-card :is-shadow="false" :border="false" padding="0" is-full>
			<uni-search-bar class="search" radius="5" placeholder="请输入产品名称" clearButton="auto" cancelButton="none" v-model="keyword" />
		</uni-card>
		
		<ul class="tab">
			<li v-for="(tab, i) in tabs" :class="{active: curTab === tab.id}" @click="tabChange(tab)">{{ tab.name }}</li>
		</ul>
		
		<ul class="list">
			<li v-for="(item, i) in list">
				<uni-data-checkbox v-if="item.check" class="check" multiple :value="[1]" :localdata="item.checkData" @change="e => checkChange(e, i)"></uni-data-checkbox>
				<uni-data-checkbox v-else class="check" multiple v-model="item.check" :localdata="item.checkData" @change="e => checkChange(e, i)"></uni-data-checkbox>
				<image class="icon" :src="$util.getIcon(item)" mode="widthFix"></image>
				{{ item.productName }}
			</li>
		</ul>
		<uni-load-more :status="status" />
		
		<view class="btn-wrap">
			<uni-data-checkbox class="check" multiple v-model="checkAll" :localdata="checkAllData" @change="allChange"></uni-data-checkbox>
			<view class="btn" @click="submit">确定({{ checked.length }})</view>
		</view>
	</view>
</template>

<script>
	import { AppletsDataProductList } from '@/apis/modules/product.js'
	import { renew } from '@/apis/modules/order.js'
	export default {
		data() {
			return {
				orderType: 1,
				customerId: '',
				curTab: '',
				tabs: [
					{
						name: '全部',
						id: ''
					},
					{
						name: '实训课程',
						id: 1
					},
					{
						name: '理论课程',
						id: 0
					},
					{
						name: '数据产品',
						id: 2
					}
				],
				reachBottom: 0, // 是否是上拉加载。0->否,1->是,-1->加载完所有数据
				status: 'more', // 上拉加载状态 more|loading|noMore
				searchTimer: null,
				orderStatus: '',
				productStatus: '',
				keyword: '',
				list: [],
				listAll: [],
				page: 1,
				pageSize: 10,
				check: [1],
				noCheck: [],
				checkData: [{
					text: '',
					value: 1
				}],
				checkAll: [],
				checkAllData: [{
					text: '全部',
					value: 1
				}],
				checked: uni.getStorageSync('courses') || [], // 已经勾选的集合
				courses: uni.getStorageSync('courses') || []
			}
		},
		watch: {
			keyword () {
				clearTimeout(this.searchTimer)
				this.searchTimer = setTimeout(() => {
					this.initList()
				}, 500)
			}
		},
		// 下拉刷新
		onPullDownRefresh() {
			this.initList()
			setTimeout(() => {
				uni.stopPullDownRefresh()
			}, 1500)
		},
		// 上拉加载
		onReachBottom() {
			if (this.reachBottom >= 0) {
				this.reachBottom = 1
				this.status = 'loading'
				this.getList()
			}
		},
		onShow() {
			const pages = getCurrentPages()
			const { options } = pages[pages.length - 1]
			this.orderType = options.orderType
			this.customerId = options.customerId
			this.getList()
		},
		methods: {
			// 获取课程列表
			getList() {
				AppletsDataProductList({
					sort: 'desc',
					keywords: this.keyword,
					productType: this.curTab,
					pageNum: this.page,
					pageSize: this.pageSize
				}).then(({ data }) => {
					const { records } = data
					const list = this.courses
					const all = this.checkAll.length // 是否勾选了全选
					const pageChange = this.reachBottom > 0 // 是否是翻页
					const { checked } = this // 已选数据
					// 添加选择框字段
					records.map(e => {
						const checkData = {
							text: '',
							value: 1
						}
						e.check = (all && pageChange) || checked.find(n => n.id === e.id && n.productType === e.productType) ? 1 : 0
						// 筛选已经勾选的产品
						if (list.find(n => n.dataOrCourseId == e.id && n.productType == e.productType)) {
							// 已经选择了的则禁止选择，并且直接选中
							checkData.disable = true 
							e.check = 1
						}
						e.checkData = [checkData]
					})
					
					// 未加载完所有数据，并且不是筛选，则拼接list，否则直接赋值
					this.list = pageChange ? [...this.list, ...records] : records
					this.page++ // 每次获取了数据后page+1
					const noMore = this.list.length === data.total // 是否加载完所有数据
					this.status = noMore ? 'noMore' : 'more' // 加载完了则设置为noMore
					this.reachBottom = noMore ? -1 : 0 // 加载完了则设置为-1
				}).catch(e => {})
			},
			initList() {
				this.page = 1
				this.reachBottom = 0
				this.getList()
			},
			// tab切换
			tabChange(tab) {
				this.curTab = tab.id
				this.initList()
			},
			// 选择框回调
			checkChange(e, i) {
				const { checked } = this
				const item = this.list[i]
				const { id, productType } = item
				const include = checked.findIndex(e => e.id === id && e.productType === productType)
				console.log(11, this.list, e, i)
				// 选中的情况下，该产品如果没有push到已选数组里，则push
				if (e.detail.value.length) {
					include === -1 && checked.push(item)
				} else {
					// 取消选中的情况下，如果已选数组里存在该产品，则移除
					include === -1 || checked.splice(include, 1)
				}
			},
			// 全选
			allChange(e) {
				const checked = !!e.detail.value.length
				this.list.map(e => e.check = checked ? [1] : []) // 选中则为[1]，取消选中为[]
			},
			// 生成产品参数
			createParam(e) {
				const { orderType } = this
				const trial = orderType == 2 // 是否是试用
				return {
					dataOrCourseId: e.id, // id
					productName: e.productName, // 名称
					periodOfUse: '', // 使用期限
					startTime: this.$util.formatDate(new Date(), 'yyyy-MM-dd'), // 开始
					endTime: '', // 终止
					remainingPeriod: '', // 剩余期限
					marketValue: '', // 市场价
					marketPrice: e.marketPrice, // 市场单价
					finalPrice: trial ? 0 : '', // 成交价
					finalValue: trial ? 0 : '', // 成交单价（数据产品特有）
					discountRate: trial ? '0%' : '', // 折扣率
					accountNum: e.productType === 2 ? '' : 1, // 账号数
					totalAmount: '', // 总价
					isEnable: 1, // 启用否：1启用，0禁用
					ship: 0, // 发货否（0未发货，1已发货，默认不发货）
					authority: e.productType === 2 ? 0 : 1, // 区分权限 0为数据平台权限，1为课程权限
					productType: e.productType, // 课程分类 (0->理论 1-实训 2 数据产品) 
					options: 2,
					miniProgramPictureAddress: e.miniProgramPictureAddress, // 图标
					settlementPrice: trial ? 0 : '', // 结算价
					settlementMethod: e.settlementMethod, // 结算方式，0为单价，1为分成
					settlementPriceUnit: e.settlementPrice, // 结算单价
					businessProportion: e.businessProportion, // 商务占比
					serviceFee: 0 // 平台服务费（前端计算后展示，不入库）
				}
			},
			// 判断是否为客户已有的课程
			handleRenew(authority, customerId, productId, result, resolve, reject) {
				renew({
					authority,
					customerId,
					productId
				}).then(({ orderOthers }) => {
					result.map(e => {
						const item = orderOthers.find(n => n.dataOrCourseId == e.dataOrCourseId && n.authority == authority && e.authority == authority)
						if (item) {
							let date = new Date(item.endTime)
							date = new Date(date.setDate(date.getDate() + 1))
							e.startTime = this.$util.formatDate(date, 'yyyy-MM-dd')
						}
					})
					resolve()
				}).catch(e => {
					reject()
				})
			},
			// 确定
			submit() {
				const list = this.checked // 已选产品
				if (list.length) {
					const result = this.courses
					const courseIds = []
					const dataIds = []
					const { customerId } = this
					list.map(e => {
						// 新勾选的产品，则获取到id，下面要调用，
						if (!result.find(n => (n.dataOrCourseId == e.id || n.dataOrCourseId == e.dataOrCourseId) && ((n.authority && e.productType != 2) || (!n.authority && e.productType == 2)))) {
							e.productType === 2 ? dataIds.push(e.id) : courseIds.push(e.id)
							result.push(this.createParam(e))
						}
					})
					const promises = []
					// 课程和数据的分别调接口
					dataIds.length && promises.push(new Promise((resolve, reject) => {
						this.handleRenew(0, customerId, dataIds, result, resolve, reject)
					}))
					courseIds.length && promises.push(new Promise((resolve, reject) => {
						this.handleRenew(1, customerId, courseIds, result, resolve, reject)
					}))
					Promise.all(promises).then(_ => {
					    uni.setStorageSync('courses', result) // 把选中的产品添加至缓存
					    uni.redirectTo({
					    	url: `../editCourse/editCourse?customerId=${customerId}&orderType=${this.orderType}`
					    })
					})
				} else {
					this.$util.errMsg('请选择产品！')
				}
			}
		}
	}
</script>

<style scoped lang="scss">
.page {
	padding-bottom: 130rpx;
}
.list {
	li {
		display: flex;
		align-items: center;
		padding: 30rpx 24rpx;
		margin: 16rpx 24rpx;
		font-size: 30rpx;
		color: #333;
		background-color: #fff;
		border-radius: 16rpx;
	}
	.icon {
		width: 80rpx;
		margin: 0 20rpx;
	}
}
/deep/.check {
	.checklist-box {
		margin: 0 !important;
	}
	.checkbox__inner {
		width: 40rpx !important;
		height: 40rpx !important;
		border-radius: 50% !important;
	}
	.checkbox__inner-icon {
		top: 8rpx !important;
		left: 14rpx !important;
	}
}
.btn-wrap {
	position: fixed;
	justify-content: space-between;
	.btn {
		width: 340rpx;
		margin-left: 27rpx;
	}
}
</style>
