<template>
	<view>
		<!-- <uni-popup ref="timePopup" type="bottom"> -->
			<view class="content">
				<!-- <view class="head">
					<text class="title">选择时间</text>
					<text class="iconfont iconclose" @click="close()"></text>
				</view> -->
				<view class="container">
					<view class="date-list-wrap">
						<!-- 日期列表 -->
						<scroll-view scroll-x>
							<block v-for="(item, index) in dateArr" :key="index">
								<div class="flex-box" @click="selectDateEvent(index, item)">
									<view class="date-box" :style="{ color: index == dateActive ? selectedTabColor : '#909399' }">
										<text>{{ item.week }} {{ item.date }}</text>
									</view>
								</div>
							</block>
						</scroll-view>
						<div class="appointed-day">
							<uni-datetime-picker type="date" :start="pickerStartDay" :end="pickerEndDay" @change="change">
								<text class="day-box">指定日期</text>
								<text class="iconfont iconyoujiantou"></text>
							</uni-datetime-picker>
						</div>
					</view>

					<!-- 时间选项 -->
					<view class="time-box" v-if="!isSection">
						<block v-for="(item, _index) in timeArr" :key="_index">
							<view class="item">
								<view
									class="item-box diy"
									:class="{ disable: item.disable, active: isMultiple ? item.isActive : _index == timeActive }"
									@click="selectTimeEvent(_index, item)"
								>
									<!-- :style="{ color: isMultiple ? (item.isActive ? selectedItemColor : '#333') : _index == timeActive ? selectedItemColor : '#333' }" -->
									<text>{{ item.time }}</text>
									<!-- <text class="all">{{ item.disable ? disableText : undisableText }}</text> -->
								</view>
							</view>
						</block>
					</view>

					<!-- 预约时间段 -->
					<view class="time-box" v-else>
						<block v-for="(item, _index) in timeArr" :key="_index">
							<view class="item">
								<view
									class="item-box"
									:class="{ disable: item.disable || item.isInclude, active: item.time == timeQuanBegin || item.time == timeQuanEnd }"
									@click="handleSelectQuantum(_index, item)"
								>
									<!-- :style="{ color: item.time == timeQuanBegin || item.time == timeQuanEnd ? selectedItemColor : '#333' }" -->
									<text>{{ item.time }}</text>
									<text class="all">{{ item.disable ? disableText : undisableText }}</text>
								</view>
							</view>
						</block>
					</view>
				</view>
				<!-- <view class="bottom">
					<view class="show-time" v-if="!isMultiple && !isSection">
						<text>预约时间：</text>
						<text class="color-base-text">{{ orderDateTime }}</text>
					</view>
					<button form-type="submit" type="primary" size="mini" class="submit-btn" @click="handleSubmit">确认预约</button>
				</view> -->
			</view>
			<!-- <view class="yuyue-date-desc">如不想线上预约，可致电商家电话预约</view> -->
		<!-- </uni-popup> -->
	</view>
</template>

<script>
// 插件地址：https://ext.dcloud.net.cn/plugin?id=3593
import { initData, initTime, timeStamp, currentTime ,strFormat, weekDate } from './yuyue-date.js';
export default {
	name: 'times',
	model: {
		prop: 'showPop',
		event: 'change'
	},
	props: {
		isMultiple: {
			//是否多选
			type: Boolean,
			default: false
		},
		isSection: {
			//预约时间段
			type: Boolean,
			default: false
		},
		advanceTime:{
			//提前预约时间
			type: [String, Number],
			default: "0"
		},
		disableText: {
			//禁用显示的文本
			type: String,
			default: '已约满'
		},
		undisableText: {
			//未禁用显示的文本
			type: String,
			default: '可预约'
		},
		timeInterval: {
			// 时间间隔，小时为单位
			type: String,
			default: "1"
		},
		selectedTabColor: {
			// 日期栏选中的颜色
			type: String,
			default: '#303133'
		},
		selectedItemColor: {
			// 时间选中的颜色
			type: String,
			default: '#D50AEF'
		},
		beginTime: {
			type: String,
			default: '09:00'
		},
		endTime: {
			type: String,
			default: '19:00'
		},
		appointTime: {
			// 预约的时间
			type: Array,
			default() {
				return [];
			}
		},
		disableTimeSlot: {
			// 预约开始和结束时间，来禁用时间段
			type: Object,
			default() {
				return {};
			}
		},
		disableWeek: {
			// 限制周几不可以预约
			type: Array,
			default() {
				return [];
			}
		}
	},
	watch: {
		appointTime: {
			handler(val) {
				if (val && val.length) {
					this.initOnload();
				}
			}
		},
		beginTime: function(nVal, oVal) {
			this.initOnload();
			this.handleSubmit();
		},
		endTime: function(nVal, oVal) {
			this.initOnload();
			this.handleSubmit();
		},
	},
	data() {
		return {
			pickerStartDay: '', // 指定开始日期
			pickerEndDay: '', // 指定结束日期
			orderDateTime: '暂无选择', // 选中时间
			orderTimeArr: {}, //多选的时间
			dateArr: [], //日期数据
			timeArr: [], //时间数据
			nowDate: '', // 当前日期
			dateActive: 0, //选中的日期索引
			timeActive: 0, //选中的时间索引
			timeQuanBeginIndex: 0, //时间段开始的下标
			selectDate: '', //选择的日期
			selectTime: '', //选择的时间
			timeQuanBegin: '', //时间段开始时间
			timeQuanEnd: '' //时间段结束时间
		};
	},
	created(props) {
		this.selectDate = this.nowDate = currentTime().date;
		this.pickerStartDay = currentTime().year + '-' + currentTime().date;
		const now = new Date(this.pickerStartDay).getTime(); //获取当前日期的时间戳
		let timeStr = 3600 * 24 * 1000; //一天的时间戳
		let day = 90; // 未来3个月
		this.pickerEndDay = timeStamp(now + timeStr * day).allDate;
		this.initOnload();
		this.dateArr = initData(); // 日期栏初始化
	},
	methods: {
		open() {
			this.$refs.timePopup.open();
		},
		close(){
			this.$refs.timePopup.close();
		},
		// 指定时间
		change(e) {
			let date = e.split("-");
			date = date[1]+ "-"+date[2];
			if(this.disableWeek.length && date >= weekDate()[0] && date <= weekDate()[1]){
				let weekBox = ['周日','周一','周二','周三','周四','周五','周六'];
				let index = new Date(e).getDay();
				if(this.disableWeek.indexOf(weekBox[index]) != -1){
					uni.showToast({
						title: weekBox[index] + '不可以预约',
						icon: 'none'
					})
					return false;
				}
			}
			this.initOnload(e);
			this.dateArr = initData(e); // 日期栏初始化
			this.selectDateEvent(0, this.dateArr[0]);
		},
		initOnload(appointedDay) {
			// console.log('this.dateArr', this.dateArr);
			this.timeArr = initTime(this.beginTime, this.endTime, parseFloat(this.timeInterval)); //时间选项初始化
			this.timeQuanBegin = this.timeQuanEnd = '';
			let isFullTime = true;
			this.timeArr.forEach((item, index) => {
				// 判断默认是不能选择的周，则都禁止选中
				if(this.disableWeek.length && this.selectDate >= weekDate()[0] && this.selectDate <= weekDate()[1]){
					let weekBox = ['周日','周一','周二','周三','周四','周五','周六'];
					let date = currentTime().year + '-' + this.selectDate;
					let index = new Date(date).getDay();
					if(this.disableWeek.indexOf(weekBox[index]) != -1){
						item.disable = true;
					}
				}
				
				
				//判断是当前这一天，选中时间小于当前时间则禁用
				if (this.selectDate == this.nowDate && currentTime().time > item.time) {
					item.disable = true;
				}
				
				// 将提前预约的时间禁用 advanceTime
				var advTime = new Date(new Date().setMinutes(new Date().getMinutes() + parseInt(this.advanceTime)*60));
				var advTimeStr = strFormat(advTime.getHours()) + ":" + strFormat(advTime.getMinutes()) + ":" + strFormat(advTime.getSeconds());
				var advTimeStr1 = strFormat(advTime.getMonth()+1) + "-" + strFormat(advTime.getDate());
				if (this.selectDate == advTimeStr1 && advTimeStr > item.time || advTimeStr1 > this.selectDate) {
					item.disable = true;
				}

				// 将预约的时间禁用
				this.appointTime.forEach(t => {
					let [date, time] = t.split(' ');
					time = time.slice(0,-3);
					
					if (date == currentTime().year + '-' + this.selectDate && item.time == time || date == currentTime().year + '-' + advTimeStr1 && item.time == time) {
						item.disable = true;
					}
				});

				// 禁用时间段
				const cur_time = `${this.selectDate} ${item.time}`;
				const { begin_time, end_time } = this.disableTimeSlot;
				if (begin_time && end_time && (begin_time <= cur_time && cur_time <= end_time)) {
					item.disable = true;
				}

				// 判断是否当前日期时间都被预约
				if (!item.disable) {
					isFullTime = false;
				}
				this.isSection && (item.isInclude = false);
			});

			this.orderDateTime = isFullTime ? '暂无选择' : this.selectDate;
			this.timeActive = -1;
			for (let i = 0, len = this.timeArr.length; i < len; i++) {
				if (!this.timeArr[i].disable) {
					this.orderDateTime = {data:`${this.selectDate}`,time:`${this.timeArr[i].time}`};
					this.timeActive = i;
					return;
				}
			}
		},

		// 日期选择事件
		selectDateEvent(index, item) {
			if(this.disableWeek.length && item.date >= weekDate()[0] && item.date <= weekDate()[1]){
				let weekBox = ['周日','周一','周二','周三','周四','周五','周六'];
				let index = new Date(item.timeStamp).getDay();
				if(this.disableWeek.indexOf(weekBox[index]) != -1){
					uni.showToast({
						title: weekBox[index] + '不可以预约',
						icon: 'none'
					})
					return false;
				}
			}
			
			this.dateActive = index;
			this.selectDate = item.date;
			this.initOnload();
			this.handleSubmit();
		},

		// 时间选择事件
		selectTimeEvent(index, item) {
			if (item.disable) return;
			if (this.isMultiple) {
				item.isActive = !item.isActive;
				this.timeArr = this.timeArr.slice();
				this.orderTimeArr[this.selectDate] = this.timeArr.reduce((prev, cur) => {
					cur.isActive && prev.push(cur.time);
					return prev;
				}, []);
			} else {
				this.timeActive = index;
				this.selectTime = item.time;
				this.orderDateTime = {data:`${this.selectDate}`,time:`${item.time}`};
			}
			this.handleSubmit();
		},

		// 选择时间段
		handleSelectQuantum(index, item) {
			if (item.disable) return;

			function clearTime() {
				this.timeQuanBeginIndex = index;
				this.timeQuanBegin = item.time;
				this.timeQuanEnd = '';
			}

			if (!this.timeQuanBegin) {
				clearTime.call(this);
				return;
			}
			if (!this.timeQuanEnd && this.timeQuanBegin) {
				let isDisble = false;
				let start = this.timeQuanBeginIndex;
				let end = index;
				start > end && ([start, end] = [end, start]);
				for (let i = start + 1; i < end; i++) {
					if (this.timeArr[i].disable) {
						isDisble = true;
						clearTime.call(this);
						return;
					}
				}
				if (!isDisble) {
					for (let i = start + 1; i < end; i++) {
						this.timeArr[i].isInclude = true;
					}
				}
				this.timeQuanEnd = item.time;
				return;
			}

			if (this.timeQuanBegin && this.timeQuanEnd) {
				this.timeArr.forEach(t => {
					t.isInclude = false;
				});
				clearTime.call(this);
			}
		},
		handleChange() {
			this.timeQuanBegin > this.timeQuanEnd && ([this.timeQuanBegin, this.timeQuanEnd] = [this.timeQuanEnd, this.timeQuanBegin]);
		},
		handleSubmit() {
			if (this.isSection) {
				this.handleChange();
				this.$emit('change', {
					beginTime: `${this.selectDate} ${this.timeQuanBegin}`,
					endTime: `${this.selectDate} ${this.timeQuanEnd}`
				});
				return;
			}

			if (this.isMultiple) {
				let time = [];
				for (let date in this.orderTimeArr) {
					this.orderTimeArr[date].forEach(item => {
						time.push(`${date} ${item}`);
					});
				}
				this.$emit('change', time);
			} else {
				// this.$emit('change', currentTime().year + '-' + this.orderDateTime);
				this.$emit('change', {
					date: currentTime().year + '-' + this.orderDateTime.data,
					time: this.orderDateTime.time
				});
			}
		}
	}
};
</script>
<style lang="scss" scoped>
@import './yuyue-date.scss';
</style>
