<template>
	<view class='productSort'>
    <!-- 商品搜索 -->
		<view class='header acea-row row-center-wrapper'>
			<view class='acea-row row-between-wrapper input'>
				<text class='iconfont icon-sousuo'></text>
				<input type='text' placeholder='点击搜索商品信息' @confirm="searchSubmitValue" confirm-type='search'
               name="search" placeholder-class='placeholder' />
			</view>
		</view>
    <!-- 商品分类（左） -->
    <view class='aside' :style="{bottom: tabbarH + 'px',height: height + 'rpx'}">
			<scroll-view scroll-y="true" scroll-with-animation='true' style="height: 100%;">
				<view class='item acea-row row-center-wrapper' :class='index==navActive?"on":""' v-for="(item,index) in productList"
			 :key="index" @click='tap(index,"b"+index)'><text>{{item.name}}</text></view>
			 </scroll-view>
		</view>
    <!-- 商品分类（右） -->
		<view class='conter'>
			<scroll-view scroll-y="true" :scroll-into-view="toView" :style='"height:"+height+"rpx;margin-top: 96rpx;"' @scroll="scroll"
			 scroll-with-animation='true'>
				<block v-for="(item,index) in productList" :key="index">
					<view class='listw' :id="'b'+index">
						<view class='title acea-row row-center-wrapper'>
							<view class='line' />
							<view class='name'>{{ item.name }}</view>
							<view class='line' />
						</view>
						<view class='list acea-row'>
							<block v-for="(itemn,indexn) in item.children" :key="indexn">
								<navigator hover-class='none' :url='"/pages/goods_list/index?cid="+itemn.id+"&title="+itemn.name' class='item acea-row row-column row-middle'>
                  <view class='picture' :style="{'background-color':itemn.picUrl?'none':'#f7f7f7'}">
										<image :src='itemn.picUrl' />
									</view>
									<view class='name line1'>{{itemn.name}}</view>
								</navigator>
							</block>
						</view>
					</view>
				</block>
				<view :style='"height:"+(height-300)+"rpx;"' v-if="number < 15" />
			</scroll-view>
		</view>
	</view>
</template>
<script>
  import * as CategoryApi from '@/api/product/category.js';
  import * as Util from '@/utils/util.js';
  export default {
		data() {
			return {
				navlist: [],
				productList: [], // 商品分类，树形结构
				navActive: 0,
				number: "",
				height: 0,
				hightArr: [],
				toView: "",
				tabbarH: 0
			}
		},
		onLoad(options) {
			this.getAllCategory();
		},
		methods: {
			infoScroll: function() {
				let len = this.productList.length;
				let child = this.productList[len - 1] && this.productList[len - 1].child ? this.productList[len - 1].child : [];
				this.number = child ? child.length:0;

				// 设置商品列表高度
        let that = this;
        uni.getSystemInfo({
					success: function(res) {
            that.height = (res.windowHeight) * (750 / res.windowWidth) - 98;
					},
				});
				let hightArr = [];
				for (let i = 0; i < len; i++) {
					// 获取元素所在位置
					let query = uni.createSelectorQuery().in(this);
					let idView = "#b" + i;
					query.select(idView).boundingClientRect();
					query.exec(function(res) {
						let top = res[0].top;
						hightArr.push(top);
						that.hightArr = hightArr
					});
				}
			},
			tap: function(index, id) {
				this.toView = id;
				this.navActive = index;
			},
			getAllCategory: function() {
        CategoryApi.getCategoryList().then(res => {
					this.productList = Util.handleTree(res.data);
					setTimeout(() => {
						this.infoScroll();
					},500)
				})
			},
			scroll: function(e) {
				let scrollTop = e.detail.scrollTop;
				let scrollArr = this.hightArr;
				for (let i = 0; i < scrollArr.length; i++) {
					if (scrollTop >= 0 && scrollTop < scrollArr[1] - scrollArr[0]) {
						this.navActive = 0
					} else if (scrollTop >= scrollArr[i] - scrollArr[0] && scrollTop < scrollArr[i + 1] - scrollArr[0]) {
						this.navActive = i
					} else if (scrollTop >= scrollArr[scrollArr.length - 1] - scrollArr[0]) {
						this.navActive = scrollArr.length - 1
					}
				}
			},
			searchSubmitValue: function(e) {
				if (this.$util.trim(e.detail.value).length > 0) {
          uni.navigateTo({
            url: '/pages/goods_list/index?searchValue=' + e.detail.value
          })
        } else {
          return this.$util.Tips({
            title: '请填写要搜索的产品信息'
          });
        }
			}
		}
	}
</script>
<style scoped lang="scss">
	.productSort .header {
		width: 100%;
		height: 96rpx;
		background-color: #fff;
		position: fixed;
		left: 0;
		right: 0;
		top: 0;
		z-index: 9;
		border-bottom: 1rpx solid #f5f5f5;
	}

	.productSort .header .input {
		width: 700rpx;
		height: 60rpx;
		background-color: #f5f5f5;
		border-radius: 50rpx;
		box-sizing: border-box;
		padding: 0 25rpx;
	}

	.productSort .header .input .iconfont {
		font-size: 26rpx;
		color: #555;
	}

	.productSort .header .input .placeholder {
		color: #999;
	}

	.productSort .header .input input {
		font-size: 26rpx;
		height: 100%;
		width: 597rpx;
	}

	.productSort .aside {
		position: fixed;
		width: 180rpx;
		left: 0;
		top:0;
		background-color: #f7f7f7;
		overflow-y: scroll;
		overflow-x: hidden;

		height: auto;
		margin-top: 96rpx;
	}

	.productSort .aside .item {
		height: 100rpx;
		width: 100%;
		font-size: 26rpx;
		color: #424242;
	}

	.productSort .aside .item.on {
		background-color: #fff;
		border-left: 4rpx solid #fc4141;
		width: 100%;
		text-align: center;
		color: #fc4141;
		font-weight: bold;
	}

	.productSort .conter {
		margin: 96rpx 0 0 180rpx;
		padding: 0 14rpx;
		background-color: #fff;
	}

	.productSort .conter .listw {
		padding-top: 20rpx;
	}

	.productSort .conter .listw .title {
		height: 90rpx;
	}

	.productSort .conter .listw .title .line {
		width: 100rpx;
		height: 2rpx;
		background-color: #f0f0f0;
	}

	.productSort .conter .listw .title .name {
		font-size: 28rpx;
		color: #333;
		margin: 0 30rpx;
		font-weight: bold;
	}

	.productSort .conter .list {
		flex-wrap: wrap;
	}

	.productSort .conter .list .item {
		width: 177rpx;
		margin-top: 26rpx;
	}

	.productSort .conter .list .item .picture {
		width: 120rpx;
		height: 120rpx;
		border-radius: 50%;
	}

	.productSort .conter .list .item .picture image {
		width: 100%;
		height: 100%;
		border-radius: 50%;
		div{
			background-color: #f7f7f7;
		}
	}

	.productSort .conter .list .item .name {
		font-size: 24rpx;
		color: #333;
		height: 56rpx;
		line-height: 56rpx;
		width: 120rpx;
		text-align: center;
	}
</style>
