<template>
	<view class="tui-datetime-picker">
		<view class="tui-mask" :class="{ 'tui-mask-show': isShow }" @touchmove.stop.prevent="stop" catchtouchmove="stop" @tap="hide"></view>
		<view class="tui-header" :class="{ 'tui-show': isShow }">
			<view class="tui-picker-header" :class="{ 'tui-date-radius': radius }" @touchmove.stop.prevent="stop" catchtouchmove="stop">
				<view class="tui-btn-picker" :style="{ color: cancelColor }" hover-class="tui-opacity" :hover-stay-time="150"
				 @tap="hide">取消</view>
				<view class="tui-btn-picker" :style="{ color: color }" hover-class="tui-opacity" :hover-stay-time="150" @tap="btnFix">确定</view>
			</view>
			<view class="tui-date-header" v-if="unitTop">
				<view class="tui-date-unit" v-if="type < 4 || type == 7">年</view>
				<view class="tui-date-unit" v-if="type < 4 || type == 7">月</view>
				<view class="tui-date-unit" v-if="type == 1 || type == 2 || type == 7">日</view>
				<view class="tui-date-unit" v-if="type == 1 || type == 4 || type == 5 || type == 7">时</view>
				<view class="tui-date-unit" v-if="type == 1 || type > 3">分</view>
				<view class="tui-date-unit" v-if="type > 4">秒</view>
			</view>
			<view class="tui-picker-body">
				<picker-view :value="value" @change="change" class="tui-picker-view">
					<picker-view-column v-if="!reset && (type < 4 || type == 7)">
						<view class="tui-column-item" :class="{ 'tui-font-size_32': !unitTop && type == 7 }" v-for="(item, index) in years"
						 :key="index">
							{{ item }}
							<text class="tui-unit-text" v-if="!unitTop">年</text>
						</view>
					</picker-view-column>
					<picker-view-column v-if="!reset && (type < 4 || type == 7)">
						<view class="tui-column-item" :class="{ 'tui-font-size_32': !unitTop && type == 7 }" v-for="(item, index) in months"
						 :key="index">
							{{ formatNum(item) }}
							<text class="tui-unit-text" v-if="!unitTop">月</text>
						</view>
					</picker-view-column>
					<picker-view-column v-if="!reset && (type == 1 || type == 2 || type == 7)">
						<view class="tui-column-item" :class="{ 'tui-font-size_32': !unitTop && type == 7 }" v-for="(item, index) in days"
						 :key="index">
							{{ formatNum(item) }}
							<text class="tui-unit-text" v-if="!unitTop">日</text>
						</view>
					</picker-view-column>
					<picker-view-column v-if="!reset && (type == 1 || type == 4 || type == 5 || type == 7)">
						<view class="tui-column-item" :class="{ 'tui-font-size_32': !unitTop && type == 7 }" v-for="(item, index) in hours"
						 :key="index">
							{{ formatNum(item) }}
							<text class="tui-unit-text" v-if="!unitTop">时</text>
						</view>
					</picker-view-column>
					<picker-view-column v-if="!reset && (type == 1 || type > 3)">
						<view class="tui-column-item" :class="{ 'tui-font-size_32': !unitTop && type == 7 }" v-for="(item, index) in minutes"
						 :key="index">
							{{ formatNum(item) }}
							<text class="tui-unit-text" v-if="!unitTop">分</text>
						</view>
					</picker-view-column>
					<picker-view-column v-if="!reset && type > 4">
						<view class="tui-column-item" :class="{ 'tui-font-size_32': !unitTop && type == 7 }" v-for="(item, index) in seconds"
						 :key="index">
							{{ formatNum(item) }}
							<text class="tui-unit-text" v-if="!unitTop">秒</text>
						</view>
					</picker-view-column>
				</picker-view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		name: 'tuiDatetime',
		props: {
			//1-日期+时间（年月日+时分） 2-日期(年月日) 3-日期(年月) 4-时间（时分） 5-时分秒 6-分秒 7-年月日 时分秒
			type: {
				type: Number,
				default: 1
			},
			//年份区间
			startYear: {
				type: Number,
				default: 1980
			},
			//年份区间
			endYear: {
				type: Number,
				default: 2050
			},
			//"取消"字体颜色
			cancelColor: {
				type: String,
				default: '#888'
			},
			//"确定"字体颜色
			color: {
				type: String,
				default: '#5677fc'
			},
			//设置默认显示日期 2019-08-01 || 2019-08-01 17:01 || 2019/08/01
			setDateTime: {
				type: String,
				default: ''
			},
			//单位置顶
			unitTop: {
				type: Boolean,
				default: false
			},
			//圆角设置
			radius: {
				type: Boolean,
				default: false
			}
		},
		data() {
			return {
				isShow: false,
				years: [],
				months: [],
				days: [],
				hours: [],
				minutes: [],
				seconds: [],
				year: 0,
				month: 0,
				day: 0,
				hour: 0,
				minute: 0,
				second: 0,
				startDate: '',
				endDate: '',
				value: [0, 0, 0, 0, 0, 0],
				reset: false
			};
		},
		mounted() {
			this.initData();
		},
		computed: {
			yearOrMonth() {
				return `${this.year}-${this.month}`;
			},
			propsChange() {
				return `${this.setDateTime}-${this.type}-${this.startYear}-${this.endYear}`;
			}
		},
		watch: {
			yearOrMonth() {
				this.setDays();
			},
			propsChange() {
				this.reset = true;
				setTimeout(() => {
					this.initData();
				}, 10);
			}
		},
		methods: {
			stop() {},
			formatNum: function(num) {
				return num < 10 ? '0' + num : num + '';
			},
			generateArray: function(start, end) {
				return Array.from(new Array(end + 1).keys()).slice(start);
			},
			getIndex: function(arr, val) {
				let index = arr.indexOf(val);
				return ~index ? index : 0;
			},
			//日期时间处理
			initSelectValue() {
				let fdate = this.setDateTime.replace(/\-/g, '/');
				fdate = fdate && fdate.indexOf('/') == -1 ? `2020/01/01 ${fdate}` : fdate;
				let time = null;
				if (fdate) time = new Date(fdate);
				else time = new Date();
				this.year = time.getFullYear();
				this.month = time.getMonth() + 1;
				this.day = time.getDate();
				this.hour = time.getHours();
				this.minute = time.getMinutes();
				this.second = time.getSeconds();
			},
			initData() {
				this.initSelectValue();
				this.reset = false;
				switch (this.type) {
					case 1:
						this.value = [0, 0, 0, 0, 0];
						this.setYears();
						this.setMonths();
						this.setDays();
						this.setHours();
						this.setMinutes();
						break;
					case 2:
						this.value = [0, 0, 0];
						this.setYears();
						this.setMonths();
						this.setDays();
						break;
					case 3:
						this.value = [0, 0];
						this.setYears();
						this.setMonths();
						break;
					case 4:
						this.value = [0, 0];
						this.setHours();
						this.setMinutes();
						break;
					case 5:
						this.value = [0, 0, 0];
						this.setHours();
						this.setMinutes();
						this.setSeconds();
						break;
					case 6:
						this.value = [0, 0];
						this.setMinutes();
						this.setSeconds();
						break;
					case 7:
						this.value = [0, 0, 0, 0, 0, 0];
						this.setYears();
						this.setMonths();
						this.setDays();
						this.setHours();
						this.setMinutes();
						this.setSeconds();
						break;
					default:
						break;
				}
			},
			setYears() {
				this.years = this.generateArray(this.startYear, this.endYear);
				setTimeout(() => {
					this.$set(this.value, 0, this.getIndex(this.years, this.year));
				}, 8);
			},
			setMonths() {
				this.months = this.generateArray(1, 12);
				setTimeout(() => {
					this.$set(this.value, 1, this.getIndex(this.months, this.month));
				}, 8);
			},
			setDays() {
				if (this.type == 3 || this.type == 4) return;
				let totalDays = new Date(this.year, this.month, 0).getDate();
				this.days = this.generateArray(1, totalDays);
				setTimeout(() => {
					this.$set(this.value, 2, this.getIndex(this.days, this.day));
				}, 8);
			},
			setHours() {
				this.hours = this.generateArray(0, 23);
				setTimeout(() => {
					let index = this.type == 5 || this.type == 7 ? this.value.length - 3 : this.value.length - 2;
					this.$set(this.value, index, this.getIndex(this.hours, this.hour));
				}, 8);
			},
			setMinutes() {
				this.minutes = this.generateArray(0, 59);
				setTimeout(() => {
					let index = this.type > 4 ? this.value.length - 2 : this.value.length - 1;
					this.$set(this.value, index, this.getIndex(this.minutes, this.minute));
				}, 8);
			},
			setSeconds() {
				this.seconds = this.generateArray(0, 59);
				setTimeout(() => {
					this.$set(this.value, this.value.length - 1, this.getIndex(this.seconds, this.second));
				}, 8);
			},
			show() {
				setTimeout(() => {
					this.isShow = true;
				}, 50);
			},
			hide() {
				this.isShow = false;
			},
			change(e) {
				this.value = e.detail.value;
				switch (this.type) {
					case 1:
						this.year = this.years[this.value[0]];
						this.month = this.months[this.value[1]];
						this.day = this.days[this.value[2]];
						this.hour = this.hours[this.value[3]];
						this.minute = this.minutes[this.value[4]];
						break;
					case 2:
						this.year = this.years[this.value[0]];
						this.month = this.months[this.value[1]];
						this.day = this.days[this.value[2]];
						break;
					case 3:
						this.year = this.years[this.value[0]];
						this.month = this.months[this.value[1]];
						break;
					case 4:
						this.hour = this.hours[this.value[0]];
						this.minute = this.minutes[this.value[1]];
						break;
					case 5:
						this.hour = this.hours[this.value[0]];
						this.minute = this.minutes[this.value[1]];
						this.second = this.seconds[this.value[2]];
						break;
					case 6:
						this.minute = this.minutes[this.value[0]];
						this.second = this.seconds[this.value[1]];
						break;
					case 7:
						this.year = this.years[this.value[0]];
						this.month = this.months[this.value[1]];
						this.day = this.days[this.value[2]];
						this.hour = this.hours[this.value[3]];
						this.minute = this.minutes[this.value[4]];
						this.second = this.seconds[this.value[5]];
						break;
					default:
						break;
				}
			},
			btnFix() {
				setTimeout(() => {
					let result = {};
					let year = this.year;
					let month = this.formatNum(this.month || 0);
					let day = this.formatNum(this.day || 0);
					let hour = this.formatNum(this.hour || 0);
					let minute = this.formatNum(this.minute || 0);
					let second = this.formatNum(this.second || 0);
					switch (this.type) {
						case 1:
							result = {
								year: year,
								month: month,
								day: day,
								hour: hour,
								minute: minute,
								result: `${year}-${month}-${day} ${hour}:${minute}`
							};
							break;
						case 2:
							result = {
								year: year,
								month: month,
								day: day,
								result: `${year}-${month}-${day}`
							};
							break;
						case 3:
							result = {
								year: year,
								month: month,
								result: `${year}-${month}`
							};
							break;
						case 4:
							result = {
								hour: hour,
								minute: minute,
								result: `${hour}:${minute}`
							};
							break;
						case 5:
							result = {
								hour: hour,
								minute: minute,
								second: second,
								result: `${hour}:${minute}:${second}`
							};
							break;
						case 6:
							result = {
								minute: minute,
								second: second,
								result: `${minute}:${second}`
							};
							break;
						case 7:
							result = {
								year: year,
								month: month,
								day: day,
								hour: hour,
								minute: minute,
								second: second,
								result: `${year}-${month}-${day} ${hour}:${minute}:${second}`
							};
							break;
						default:
							break;
					}
					this.$emit('confirm', result);
					this.hide();
				}, 80);
			}
		}
	};
</script>

<style scoped>
	.tui-datetime-picker {
		position: relative;
		z-index: 999;
	}

	.tui-picker-view {
		height: 100%;
		box-sizing: border-box;
	}

	.tui-mask {
		position: fixed;
		z-index: 9998;
		top: 0;
		right: 0;
		bottom: 0;
		left: 0;
		background-color: rgba(0, 0, 0, 0.6);
		visibility: hidden;
		opacity: 0;
		transition: all 0.3s ease-in-out;
	}

	.tui-mask-show {
		visibility: visible !important;
		opacity: 1 !important;
	}

	.tui-header {
		z-index: 9999;
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
		transition: all 0.3s ease-in-out;
		transform: translateY(100%);
	}

	.tui-date-header {
		width: 100%;
		height: 52rpx;
		display: flex;
		align-items: center;
		justify-content: space-between;
		background-color: #fff;
		font-size: 26rpx;
		line-height: 26rpx;
		color: #555;
		/* #ifdef MP */
		box-shadow: 0 15rpx 10rpx -15rpx #efefef;
		/* #endif */
		/* #ifndef MP */
		box-shadow: 0 15rpx 10rpx -15rpx #888;
		/* #endif */
		position: relative;
		z-index: 2;
	}

	.tui-date-unit {
		flex: 1;
		text-align: center;
	}

	.tui-show {
		transform: translateY(0);
	}

	.tui-picker-header {
		width: 100%;
		height: 90rpx;
		padding: 0 40rpx;
		display: flex;
		justify-content: space-between;
		align-items: center;
		box-sizing: border-box;
		font-size: 32rpx;
		background-color: #fff;
		position: relative;
	}

	.tui-date-radius {
		border-top-left-radius: 20rpx;
		border-top-right-radius: 20rpx;
		overflow: hidden;
	}

	.tui-picker-header::after {
		content: '';
		position: absolute;
		border-bottom: 1rpx solid #eaeef1;
		-webkit-transform: scaleY(0.5);
		transform: scaleY(0.5);
		bottom: 0;
		right: 0;
		left: 0;
	}

	.tui-picker-body {
		width: 100%;
		height: 520rpx;
		overflow: hidden;
		background-color: #fff;
	}

	.tui-column-item {
		display: flex;
		align-items: center;
		justify-content: center;
		font-size: 36rpx;
		color: #333;
	}

	.tui-font-size_32 {
		font-size: 32rpx !important;
	}

	.tui-unit-text {
		font-size: 24rpx !important;
		padding-left: 8rpx;
	}

	.tui-btn-picker {
		padding: 16rpx;
		box-sizing: border-box;
		text-align: center;
		text-decoration: none;
	}

	.tui-opacity {
		opacity: 0.5;
	}
</style>
