<template>
	<view>
		<view v-for="(item, index) in requirement" :key="index">
			<view class="requires" @click="requireDetail(item)">
				<uni-row class="demo-uni-row">
					<uni-col offset="1">
						<view class="requires-col1">课程号：{{item.courseId}}</view>
					</uni-col>
				</uni-row>
				<uni-row class="demo-uni-row">
					<uni-col offset="1" :span="16">
						<view class="requires-col2">科目：{{item.subject}}</view>
					</uni-col>
					<uni-col :span="7">
						<view>
							<button @click.stop="open(item)" size="mini" :type="item.buttonType">{{item.display}}</button>
						</view>
					</uni-col>
				</uni-row>
				<view class="requires-col3">
					<uni-row class="demo-uni-row">
						<uni-col :span="4" offset="12">
							<view style="color: red;">{{item.verifyStatus}}</view>
						</uni-col>
						<uni-col :span="4" >
							<view style="color: red;">{{item.deal}}</view>
						</uni-col>
						<uni-col :span="4" >
							<view style="color: red;">{{item.locked}}</view>
						</uni-col>
					</uni-row>
				</view>
			</view>
		</view>
		
		<uni-popup ref="popup" type="message">
			<uni-popup-message :type="popupType" :message="showMessage" :duration="1000"></uni-popup-message>
		</uni-popup>
		
	</view>
</template>

<script>
	export default {
		data() {
			return {
				requirement: [],
				// 分页对象
				queryObj: {
					pageNum: 1,
					pageSize: 8
				},
				isloading: false,
				count: 0,	// 总数量
				publishCount: 0,	// 上架数量
				showMessage: '上架成功',
				popupType: 'success'
			}
		},
		created() {
			this.getPublishCounts()
		},
		methods: {
			// 查询个人上架了多少课程
			async getPublishCounts(cb) {
				// 打开节流阀
				this.isloading = true
				
				const { data: result } = await uni.$http.get('/education/teacher-courses/showPersonCourse', this.queryObj)
				
				this.isloading = false
				cb && cb()
				
				// console.log(result.data.list)
				this.publishCount = result.data.publishCounts
				this.count = result.data.count
				let courses = []
				courses = result.data.list
				
				for (let i = 0; i < courses.length; i++) {
					if (courses[i].display === '上架') {
						courses[i].display = '下架'
						courses[i].buttonType = 'warn'
					} else {
						courses[i].display = '上架'
						courses[i].buttonType = 'primary'
					}
				}
				
				this.requirement = [...this.requirement, ...courses]
				console.log(this.requirement)
			},
			// 下拉刷新的事件
			onPullDownRefresh() {
				if (this.isloading) return
				// 1.重置数据
				this.queryObj.pageNum = 1
				this.publishCount = 0
				this.requirement = []
				this.isloading = false
				
				// 2.重新发请求
				this.getPublishCounts(() => uni.stopPullDownRefresh())
			},
			// 触底的事件
			onReachBottom() {
				// 判断是否有下一页的数据
				if (this.queryObj.pageNum * this.queryObj.pageSize >= this.count)
				return uni.$showMsg('数据加载完毕！')
				
				// 是否有其他正在请求数据
				if (this.isloading) return
				
				// 页码自增
				this.queryObj.pageNum += 1
				this.getPublishCounts()
			},
			async open(item) {
				console.log(item.display)
				if (item.display === '上架') {
					if (item.verifyStatus !== '已通过') return uni.$showMsg('审核通过才能上架')
					if (item.deal === '已成交') return uni.$showMsg('已成交的课程不能上架')
					if (this.publishCount >= 4) return uni.$showMsg('最多上架4个课程')
				}
				const queryObj = {
					display: item.display,
					courseId: item.courseId
				}
				const { data: result } = await uni.$http.get('/education/teacher-courses/updatePersonDisplay', queryObj)
				if (result.code === 20000) {
					if (item.display === '上架') {
						item.display = '下架'
						this.showMessage = '上架成功'
						this.popupType = 'success'
						item.buttonType = 'warn'
						this.publishCount += 1
						
					} else if (item.display === '下架') {
						item.display = '上架'
						this.showMessage = '下架成功'
						this.popupType = 'error'
						item.buttonType = 'primary'
						this.publishCount -= 1
					}
					this.$refs.popup.open('top')
				}
			},
			requireDetail(item) {
				uni.navigateTo({
					url: '/subpkg/course_detail/course_detail?item=' + encodeURIComponent(JSON.stringify(item))
				})
			},
		}
	}
</script>

<style scoped lang="scss">
	.requires {
		background-color: #FFF2CC;
		border: 1px solid #41719C;
		
		.requires-col1 {
			margin-top: 15rpx;
		}
		
		.requires-col2 {
			margin: 15rpx 0;
		}
		
		.requires-col3 {
			padding-bottom: 15rpx;
		}
	}
</style>
