<template>
	<uni-popup type="bottom" ref="areaChoose">
		<view class="mian getHeight" id="main">
			<view class="top getHeight" id="top">
				<text>请选择所在地区</text>
				<!-- <text class="iconfont close" @click.stop="close">&#xe7fa;</text> -->
				<view class="top_img">
					<image src="@/static/images/close.png" mode="aspectFill" @click.stop="close"></image>
				</view>
			</view>
			<scroll-view scroll-x="true" @scroll="scroll" :show-scrollbar="false" class="nav getHeight" id="nav"
				:scroll-into-view="scrollIntoView">
				<view @click="areaSelect(index)" :class="areaIndex == index ? 'nav-item nav-item-a' : 'nav-item'"
					v-for="(item, index) in list" :key="index" :id="'area' + index">
					<text>{{ item }}</text>
				</view>
				<view class="bottomBorder" :style="'left:' + navBottomLeft + 'px'"></view>
			</scroll-view>
			<swiper class="swiper getHeight" :disable-touch="true" :current="current"
				:style="'height:' + swiperH + 'px'">
				<swiper-item v-for="(type, idx) in [1,2,3,4,5]" :key="idx" :id="'sw'+type">
					<scroll-view scroll-y="true" scroll-with-animation scroll-anchoring :scroll-into-view='id2'
						@scroll="scroll" :show-scrollbar="false" class="swiper-list">
						<view class="area-item" v-for="(item, index) in getList" :key="index" :id="'area' + index">

							<text :class="id == item.pinyin+type ? 'area-item-id area-item-id-sticky': 'area-item-id'"
								:id='item.pinyin+type'>{{ item.pinyin }}</text>

							<view class="swiper-list2">


								<view class="" v-if='typeof(item.data)=="object"'>

									<text
										:class="proCode.code == item.data[0].code ? 'area-item-name area-item-name-a' : 'area-item-name'"
										@click="itemSelect(item, idx)">




										{{ item.data.name }}

									</text>
								</view>
								<view class="">
									<text
										:class="proCode.code == item2.code || cityCode.code == item2.code || disCode.code == item2.code || townCode.code == item2.code || streeCode.code == item2.code? 'area-item-name area-item-name-a' : 'area-item-name'"
										@click="itemSelect(item2, idx)" v-for="(item2, index2) in item.data"
										:key="index2">

										<!-- <text class="iconfont"
											v-if="proCode == item2.code || cityCode == item2.code || disCode == item2.code">&#xe674;</text> -->
										{{ item2.name }}

									</text>
								</view>
							</view>
						</view>
					</scroll-view>

				</swiper-item>
			</swiper>
			<view class="slider-right">
				<view class="slider-list">
					<text class="slider-item"
						v-for="(item, index) in (areaIndex == 0 ? provinceList : areaIndex == 1 ? cityList : areaIndex == 2 ? disList : townList)"
						:key="index" @click="sliderSelect(item.pinyin +(areaIndex+1))">{{ item.pinyin }}</text>
				</view>
			</view>
		</view>
	</uni-popup>
</template>

<script>
	import {
		getAddressList
	} from '@/api/user.js';
	import {
		village
	} from '@/api/api.js';
	export default {
		name: 'area-choose',
		props: {

			address: Array,
		},
		data() {
			return {
				list: ['请选择', '', '', '', ''],
				areaIndex: 0,
				navBottomLeft: 0,
				scrollIntoView: 'area0',
				code: '440100',
				provinceList: [], //省
				proCode: -1,
				cityList: [],
				cityCode: -1,
				disList: [],
				disCode: -1,
				townList: [],
				townCode: -1,
				streeCode: -1,
				streeList: [],
				areaCode: -1,
				areaList: [],
				swiperH: 300, //列表高
				current: 0, //当前滑块
				id: '', //地址编号A、B、C、...
				id2: '',
				scrollTopList: [{
					id: 'A',
					top: 0
				}],
				scrollTopListAll: {}

			};
		},
		onLoad() {


		},
		mounted() {

			this.getData();
		},
		computed: {
			getList() {

				return this.areaIndex == 0 ? this.provinceList : this.areaIndex == 1 ? this.cityList : this.areaIndex ==
					2 ? this.disList : this.areaIndex ==
					3 ? this.townList : this.areaIndex ==
					4 ? this.streeList : this.areaList
			},
		},
		methods: {
			close() {
				this.$refs.areaChoose.close()
			},
			show() {


				this.$refs.areaChoose.open();
				if(this.address.length>0){
					this.list = this.address
				}
				

				if (!this.provinceList) {
					this.getData();
				} else {
					this.getScrollT(0, this.provinceList.length)
					this.current = 0;
				
					this.$nextTick(()=>{
						setTimeout(() => {
							this.areaSelect(0);
						}, 300)
						
					})

				}

		
				this.$nextTick(()=>{
					setTimeout(() => {
						this.getSwiperH();
					}, 300)
					
				})

			},
			onchange(e) {
				const value = e.detail.value;
			},
			scroll(e) {
				this.scrollTopList.some((item, index) => {
					if (e.detail.scrollTop > item.top) {
						this.id = item.id
					}
				})
			},
			areaSelect(index) {
				// 选中头部地址项
				this.areaIndex = index;
				this.current = index;
				//自动滚动
				this.scrollIntoView = 'area' + index;
				let widthAll = 0;
				for (let i = 0; i < index + 1; i++) {
					var query = uni.createSelectorQuery().in(this);
					var idView = '#area' + i;
					query.select(idView).boundingClientRect();
					query.exec(res => {
						
						if(res[0]!=null){
				
							if (i < index) {
								widthAll += res[0].width;
							}
							if (i == index ) {
								this.navBottomLeft = widthAll + (res[0].width - uni.upx2px(60)) / 2;
							}
						}
						
					});
				}
				this.scrollTopList = this.scrollTopListAll[index]
			},
			sliderSelect(id) {
				this.id2 = id
			},
			getSwiperH() {
				var query = uni.createSelectorQuery().in(this);
				query
					.selectAll('.getHeight')
					.boundingClientRect()
					.exec(res => {
						if (res[0].length > 0) {
							this.swiperH = res[0][0].height - res[0][1].height - res[0][2].height - uni.upx2px(20);
						} else {
							setTimeout(() => {
								this.getSwiperH();
							}, 200);
						}
					});
			},
			getScrollT(type, length) {
				var query = uni.createSelectorQuery().in(this);
				query
					.selectAll('#sw' + (type + 1) + ' .area-item-id')
					.boundingClientRect()
					.exec(res => {
						if (res[0].length == length) {
							this.scrollTopList = []
							
							
							let firstTop = res[0][0].top
							res[0].forEach((item, index) => {
								let obj = {
									id: item.id,
									top: item.top - firstTop
								}
								this.scrollTopList.push(obj)
							})
							this.scrollTopListAll[type] = this.scrollTopList
						} else {
							setTimeout(() => {
								this.getScrollT(type, length)
							}, 200)
						}

					});

			},
			itemSelect(item, type) {

				switch (type) {

					case 0:
						this.proCode = item;

						break;
					case 1:
						this.cityCode = item;
						break;
					case 2:
						this.disCode = item;
						break;
					case 3:
						this.townCode = item;
						break;
					case 4:
						this.streeCode = item;
						break;
					case 5:
						this.areaCode = item;

						break;
					default:
						break;
				}
				this.list.forEach((item2, index2) => {

					if (index2 == type) {

						this.$set(this.list, type, item.name)

						if (index2 < 4) {
							this.$set(this.list, type + 1, '请选择');

							this.getData(item.code, type + 1);


						} else {
							setTimeout(() => {
								this.areaSelect(type);
							}, 200);
						}
					}
					if (index2 > type + 1) {
						this.$set(this.list, index2, '');
					}
				});
				if (type == 4) {


					this.$refs.areaChoose.close()
					// this.$emit('areaComplete', {
					// 	address: this.list.join(''),

					// 	proCode: this.proCode,
					// 	cityCode: this.cityCode,
					// 	disCode: this.disCode,
					// 	streeCode: this.townCode,
					// 	areaCode: this.streeCode
					// })
					this.$emit('areaComplete', [this.proCode, this.cityCode, this.disCode, this.townCode, this.streeCode]

					)
				}

			},

			getData(code = '', type = 0) {
				console.log(type)
				let obj;
				if (type == 0) {
					obj = {

						pinyin: 1

					}

				} else if (type == 1) {
					obj = {
						province_code: code,
						pinyin: 1

					}

				} else if (type == 2) {
					obj = {
						city_code: code,
						pinyin: 1

					}
				} else if (type == 3) {
					obj = {
						area_code: code,
						pinyin: 1

					}
				} else {
					obj = {
						street_code: code,
						pinyin: 1

					}
				}


				village(obj).then(res => {

					if (res.data.length == 0) {
						this.$refs.areaChoose.close()
					}
					res.data.sort((a,b)=>{
						
						return a.pinyin.localeCompare(b.pinyin)
					})
					switch (type) {

						case 0:
							this.provinceList = res.data;
							break;
						case 1:
							this.cityList = res.data;
							break;
						case 2:
							this.disList = res.data;
							break;
						case 3:
							this.townList = res.data;
							break;
						case 4:
							this.streeList = res.data;
							break;
						case 5:
							this.areaList = res.data;
							break;
						default:
							break;

					}
					if (res.data.length > 0) {
						this.getScrollT(type, res.data.length)
					}
					this.current = type;
					this.areaSelect(type);
				})

			},

		}
	};
</script>

<style scoped lang="scss">
	.mian {
		height: 85vh;
		width: 100%;
		background-color: #ffffff;
		border-radius: 20rpx 20rpx 0 0;
		position: relative;

		.top {
			display: flex;
			align-items: center;
			justify-content: space-between;
			padding-left: 30rpx;
			font-size: 32rpx;
			font-weight: bold;
			padding: 40rpx 30rpx 30rpx;

			.top_img {
				width: 58rpx;
				height: 58rpx;

				image {
					width: 100%;
					height: 100%;
				}
			}


		}

		.nav {
			white-space: nowrap;
			width: 100%;
			position: relative;
			padding: 0rpx 20rpx;

			.bottomBorder {
				position: absolute;
				width: 60rpx;
				height: 6rpx;
				// background-image: linear-gradient(to right, red, white);
				bottom: 0rpx;
				left: 0rpx;
				transition: left 0.5s ease;
			}

			.nav-item {
				padding: 10rpx 20rpx;
				display: inline-block;
				text-align: center;
			font-size: 30rpx;
			font-family: PingFang SC-Medium, PingFang SC;
			font-weight: 500;
			color: #3274F9 !important;
			}

			.nav-item-a {
				// color: rgb(201, 22, 35);
			}
		}

		.swiper {
			height: 1000rpx;
			margin-top: 20rpx;

			.swiper-list {
				height: 100%;
				display: flex;
				flex-direction: column;
				position: relative;

				.area-item {
					font-size: 28rpx;

					.area-item-id {
						padding: 20rpx 44rpx;
						// border-bottom: 1rpx solid #f0ecf2;
						font-weight: bold;
						display: block;
					}

					.area-item-id-sticky {
						position: sticky;
						top: 0;
						background-color: #FFFFFF;
						transition: all 0.1s;

					}

					.swiper-list2 {
						display: flex;
						flex-direction: column;


						.area-item-name {
							padding: 20rpx 40rpx 0;
							font-weight: 400;

							.iconfont {
								color: rgb(201, 22, 35);
								margin-right: 10rpx;
							}
						}

						.area-item-name-a {
							color: rgb(201, 22, 35);
						}
					}
				}

			}
		}

		.slider-right {

			position: absolute;
			right: 0rpx;
			top: 80rpx;
			bottom: 0;
			display: flex;
			flex-direction: column;
			align-items: center;
			justify-content: center;
			padding: 20rpx;

			.slider-list {
				display: flex;
				flex-direction: column;
				align-items: center;
				background-color: #F4F7FE;
				border-radius: 20rpx;
				font-size: 23rpx;
				font-weight: 400;
			}

			.slider-item {
				padding: 10rpx 10rpx;
				font-size: 18rpx;
				color: #24292E;

				&:first-child {
					padding-top: 20rpx;
				}

				&:last-child {
					padding-bottom: 20rpx;
				}
			}
		}
	}
</style>