<template>
	<view>
		<cu-custom ref="cuCustom" bgColor="bg-gradual-blueness" :isBack="true" :isRingt="true" :backUrl="backUrl">
			<block slot="backText">返回</block>
			<block slot="content">我的课程</block>
		</cu-custom>
		<view class="select-fixed top-fixed">
			<view class="cu-bar search bg-white">
				<picker @change="statusChange" :value="sindex" :range="statusList" range-key="name">
					<view class="saixuan">
						<text>课程进度：</text>
						<text>{{ studyText }}</text>
						<text class="cuIcon-triangledownfill"></text>
					</view>
				</picker>
			</view>
			<view class="line"></view>
		</view>
		<scroll-view class="dy-scroll" @scrolltolower="scrolltolower" scroll-y :style="'top:'+sTop+'px;height:calc(100vh - '+totalHeight+'px)'">
			<view v-if="list.length>0">
				<view class="dy-list">
					<view v-for="(item,index) of list" :key="index" :data-id="item.CURRICULUM_ID"
					 class="dy-list-item p20">
						<view class="dy-title-flex">
							<text style="flex: 1;">{{item.CURRICULUMNAME}}</text>
							<view class="dy-br">
								<button v-if="item.ISVISIBLE" class="cu-btn bg-green round sm" @click="$noMultipleClicks(goToMyStudy, item)">
									<text class="cuIcon-playfill"></text>开始学习</button>
							</view>
						</view>
						<view class="dy-subtitle-flex">
							<text>课程状态:{{item.STUDYSTATENAME}}</text>
						</view>
						<view class="dy-subtitle-flex">
							<text>开始时间:{{item.STARTTIME}}</text>
						</view>
						<view class="dy-subtitle-flex">
							<text>结束时间:{{item.ENDTIME}}</text>
						</view>
						<view class="dy-subtitle-flex">
							<text>相关课件:{{item.COURSEWARECOUNT}}</text>
						</view>
						<view v-if="item.STUDYSTATE === '2' || item.STUDYSTATE === '3'" class="dy-subtitle-flex">
							<text>考试成绩:{{item.COURSEEXAMSCORE}}</text>
						</view>
						
					</view>
				</view>
			</view>
			<view v-else-if="dataFlag=='noData'" class="dy-null">
				<view class="dy-null-img">
					<image :src="background[dataFlag].url" mode=""></image>
				</view>
				<view class="dy-null-title">
					{{background[dataFlag].msg}}
				</view>
			</view>
			<view class="cu-tabbar-height"></view>
		</scroll-view>
	</view>
</template>

<script>
	import {
		basePath,
		corpinfoId,
		deptId,
		loginSession,
		formatDate,
		loginUser
	} from '@/common/tool.js';
	import tkiTree from "@/components/select-tree/select-tree.vue"
	export default {
		components: {
			tkiTree
		},
		data() {
			return {
				backUrl: '/pages/application/onlinexxks/home',
				showRight: false,
				dataFlag: 'noData',
				sTop: 0,
				totalHeight: 0,
				list: [], //返回数据
				page: 1, //分页参数--页数
				rows: 10, //分页参数--每页数据条数
				totalCount: 0, //分页参数--初始化页数
				isEnd: false, //防止多次刷新
				totalPage: 0, //分页参数--分页数量
				noClick: true,
				statusList: [{
						id: '',
						name: '请选择'
					},
					{
						id: '1',
						name: '未开始'
					},
					{
						id: '2',
						name: '进行中'
					},
					{
						id: '3',
						name: '已通过'
					},
					{
						id: '4',
						name: '已结束'
					}
				],
				sindex: -1,
				studyState: '',
				studyText: '请选择'
			}
		},
		onReady() {
			let that = this;
			let CustomBar = this.CustomBar;
			uni.getSystemInfo({ //调用uni-app接口获取屏幕高度
				success(res) { //成功回调函数
					let titleH = uni.createSelectorQuery().select(".top-fixed"); //想要获取高度的元素名（class/id）
					titleH.boundingClientRect(data => {
						that._data.sTop = data.height //计算高度：元素高度=窗口高度-元素距离顶部的距离（data.top）
						that.totalHeight = data.height + CustomBar
					}).exec()
				}
			})
		},
		onLoad() { //页面第一次加载时触发，从跳转页面返回时不能触发，可以传递参

		},
		onBackPress() {
			this.$refs.cuCustom.BackPage()
			return true
		},
		onShow() {
			//页面显示或从后台跳回小程序时显示此页面时触发，从跳转页面返回时触发，不能传递参数
			var _this = this;
			_this.background = require('@/common/background.json');
			_this.showCount = -1;
			_this.currentPage = 1;
			_this.list = [];
			_this.isEnd = false;
			_this.getData();
			loginSession();
		},

		filters: {
			formatDate(time) {
				let date = new Date(time)
				return formatDate(date, 'yyyy-MM-dd')
			}
		},
		methods: {
			//跳转事件
			goToMyStudy(item) {
				uni.redirectTo({
					url: '/pages/application/onlinexxks/my-study?CURRICULUM_ID=' + item.CURRICULUM_ID + '&COURSESTUDENTRELATION_ID=' + item.COURSESTUDENTRELATION_ID
				})
			},
			statusChange(e) {
				console.info(e.detail.value)
				console.info(this.statusList[this.sindex])
				this.sindex = e.detail.value;
				this.studyState = this.statusList[this.sindex].id;
				this.studyText = this.statusList[this.sindex].name
				this.getQuery();
			},
			getQuery() { //搜索按钮事件
				var _this = this;
				_this.showCount = -1;
				_this.currentPage = 1;
				_this.list = [];
				_this.isEnd = false;
				_this.getData();
			},
			// 滑动到底方法
			scrolltolower() {
				var _this = this;
				_this.showCount = -1;
				_this.currentPage = _this.currentPage + 1;
				_this.isEnd = false;
				if (_this.totalPage >= _this.currentPage) {
					_this.getData(); //开始分页查询
				}
			},
			getData() {
				var _this = this;
				if (_this.isEnd) {
					return
				} else {
					this.isEnd = true;
				}
				uni.showLoading({
					title: "加载中..."
				}); //加载中动画
				uni.request({
						url: basePath + '/app/mycurriculum/pageDataByUser?showCount=' + _this.showCount + '&currentPage=' + _this.currentPage,
						method: 'POST',
						dataType: 'json',
						header: {
							'Content-type': 'application/x-www-form-urlencoded'
						},
						data: {
							CORPINFO_ID: corpinfoId,
							USER_ID: loginUser.USER_ID,
							tm: new Date().getTime(),
							STUDYSTATE: _this.studyState, //关键字模糊查询
						},
						success: (res) => {
							uni.hideLoading(); //结束加载中动画
							if (res.data != null) {
								_this.totalPage = res.data.page.totalPage
								// 从后端获取的数据，将这一步骤放到异步获取后端数据的地方，对后端返回的数据进行处理
								res.data.varList.forEach((ele) => {
									const nowDate = new Date()
									const beginDate = new Date(ele.STARTTIME)
									const endDate = new Date(ele.ENDTIME)
									if (nowDate < beginDate) {
										ele.STUDYSTATENAME = '未开始'
										ele.ISVISIBLE = false
									} else {
										ele.ISVISIBLE = true
										switch (ele.STUDYSTATE) {
											case '1':
												ele.STUDYSTATENAME = '未开始'
												break
											case '2':
												ele.STUDYSTATENAME = '进行中'
												break
											case '3':
												ele.STUDYSTATENAME = '已通过'
												ele.ISVISIBLE = false
												break
											case '4':
												ele.STUDYSTATENAME = '已结束'
												ele.ISVISIBLE = false
												break
											default:
												ele.STUDYSTATENAME = ''
												break
										}
									}
									// 如果数据不更新的话，增加下面代码
									res.data.varList.splice(1, 0)
								}) 
								if (_this.list.length == 0) {
									_this.list = res.data.varList;
								} else {
									console.info(1)
									if (res.data.varList != null) {
										_this.list2 = res.data.varList; 
										console.info(_this.list2)
										_this.list = _this.list.concat(_this.list2);
										console.info(_this.list)
									}
								}
							}

						}
					})
				},
			}
		}
</script>

<style>
	.dy-card {
		background-color: #fff;
		border-radius: 10upx;
		margin: 30upx
	}

	.dy-card-title {
		display: flex;
		justify-content: space-between;
		border-bottom: 1px solid #eee;
		min-height: 80upx;
		line-height: 80upx;
		padding: 0 30upx;
	}

	.dy-card-content {
		padding: 0upx 30upx 30upx;

	}

	.dy-card-content-item {
		margin-top: 20upx;
	}

	.dy-card-content-item .title {
		display: flex;
		align-items: center;
	}

	.dy-card-content-item .title .l {
		width: 10upx;
		height: 30upx;
		border-radius: 20upx;
		background-color: #666;
		margin-right: 10upx;
	}

	.dy-card-content-item .content {
		background-color: #F1F1F1;
		padding: 10upx 14upx;
		margin-top: 14upx;
		line-height: 1.6;
	}

	.dy-card-content-item .name text {
		background-color: #F1F1F1;
		padding: 10upx 14upx;
		margin-top: 14upx;
		line-height: 1.6;
		display: inline-block;
	}

	.dy-card-foot {
		border-top: 1px solid #eee;
		padding: 30upx;
	}
	.dy-br{
		width: 200upx;
		text-align: right;
	}
	.dy-br .cu-btn{
		white-space: normal;
	}
</style>
