<template>
    <view class="u-wrap">
        <view class="u-menu-wrap">
            <scroll-view scroll-y scroll-with-animation class="u-tab-view menu-scroll-view" :scroll-top="scrollTop"
                :scroll-into-view="itemId">
                <view v-for="(item, index) in tabbar" :key="index" class="u-tab-item"
                    :class="[current == index ? 'u-tab-item-active' : '']" @tap.stop="swichMenu(index)">
                    <text class="u-line-1">{{ item.name }}</text>
                </view>
            </scroll-view>
            <scroll-view :scroll-top="scrollRightTop" scroll-y scroll-with-animation class="right-box"
                @scroll="rightScroll">
                <view class="page-view">
                    <view class="class-item" :id="'item' + index" v-for="(item, index) in tabbar" :key="index">
                        <view class="item-title">
                            <text>{{ item.name }}</text>
                        </view>
                        <view class="item-container">
                            <view @click="clickFunc({ 'type': 'address' })" v-if="item.name === `省市区县`"
                                class="thumb-box thumb-box1">
                                <u-cell-group>
                                    <u-cell icon="map" :title="areaModal.address" :isLink="true"
                                        arrow-direction="down"></u-cell>
                                </u-cell-group>
                            </view>
                            <view @click="clickFunc({ 'type': 'industry' })" v-else-if="item.name === `行业`"
                                class="thumb-box thumb-box1">
                                <u-cell-group>
                                    <u-cell icon="calendar" :title="industryModal.industry" :isLink="true"
                                        arrow-direction="down"></u-cell>
                                </u-cell-group>
                            </view>
                            <view @click="clickFunc({
                                'type': 'normal', 'bigObj': item, 'smallObj': item1
                            })" v-else
                                :class="submitData[item.name] === item1.id ? `selected-box thumb-box` : `thumb-box`"
                                v-for="(item1, index1) in item.data" :key="index1">
                                <view class="item-menu-name">{{ item1.name }}</view>
                            </view>
                        </view>
                    </view>
                </view>

            </scroll-view>

        </view>
        <view class="buttonWrapper">
            <view class="cancelButton" @click="closePopUp">取消</view>
            <view class="sureButton" @click="subMitPopUp({submitData,areaModal,industryModal})">确定</view>
        </view>
        <!-- 省市 -->
        <data-picker :show="areaModal.addressShow" @confirm='confirmAddress' @cancel='areaModal.addressShow = false'
            @close='areaModal.addressShow = false' :defaultNames="areaModal.defaultNames" :indexs="areaModal.indexs"
            :defaultIds="areaModal.defaultIds" :showToolbar="false" :showBottombar="true"
            :labelName="areaModal.labelName"></data-picker>
        <!-- 行业 -->
        <u-picker @confirm="pickerIndustryFunc" keyName="name" @cancel="industryModal.industryShow = false"
            :show="industryModal.industryShow" :columns="industryModal.industryList"></u-picker>
    </view>
</template>

<script>
import classifyData from './classifyData.js';
import { getTrade } from '@/api/resume.js'
export default {
    props: {
        closePopUp: {
            type: Function,
            required: true
        },
        subMitPopUp: {
            type: Function,
            required: true
        },
    },
    components: {
        // vTabs,
        // companyList, verticalMenu
    },
    data() {
        return {
            scrollTop: 0,
            oldScrollTop: 0,
            current: 0,
            menuHeight: 0,
            menuItemHeight: 0,
            itemId: "0",
            tabbar: classifyData,
            menuItemPos: 0,
            arr: [],
            scrollRightTop: 0,
            timer: null,


            areaModal: {
                address: '',
                addressShow: false,
                title: 'Hello',
                // indexs: [0, 0, 8],
                // defaultIds: [1, 110000, 110106],
                defaultNames: ['北京市', '北京市', '东城区'],
                labelName: "areaName"

            },
            industryModal: {
                industry: "",
                industryList: [[]],
                industryShow: false,
            },

            submitData: {},

        }
    },
    created: function () {
        this.getData()
        this.getMenuItemTop()
    },


    methods: {
        getData: function () {
            getTrade().then(res => {
                console.log(res.data.data);
                const newData = this.tabbar;

                newData.map(item => {
                    if (item.name === "行业") {
                        item.data = res.data.data
                    }
                })
                this.tabbar = newData;
                this.industryModal.industry = res.data.data[0]?.name
                this.industryModal.industryList = [res.data.data]

            })
        },

        // 点击左边的栏目切换
        async swichMenu(index) {
            if (this.arr.length == 0) {
                await this.getMenuItemTop();
            }
            if (index == this.current) return;
            this.scrollRightTop = this.oldScrollTop;
            this.$nextTick(() => {
                this.scrollRightTop = this.arr[index];
                // scrollRightTop = newarrTop
                this.current = index;
                this.leftMenuStatus(index);
            })
        },

        // 获取一个目标元素的高度
        getElRect(elClass, dataVal) {
            new Promise((resolve, reject) => {
                // const query = uni.createSelectorQuery().in(this);
                const query = uni.createSelectorQuery()
                query.select('.' + elClass).fields({
                    size: true
                }, res => {
                    // 如果节点尚未生成，res值为null，循环调用执行
                    if (!res) {
                        setTimeout(() => {
                            this.getElRect(elClass);
                        }, 10);
                        return;
                    }
                    if (dataVal == 'menuHeight') {
                        this.menuHeight = res.height;
                    }
                    if (dataVal == 'menuItemHeight') {
                        this.menuItemHeight = res.height;
                    }

                    resolve();
                }).exec();
            })
        },

        // 观测元素相交状态
        async observer() {
            this.tabbar.map((val, index) => {
                let observer = uni.createIntersectionObserver(this);
                // 检测右边scroll-view的id为itemxx的元素与right-box的相交状态
                // 如果跟.right-box底部相交，就动态设置左边栏目的活动状态
                observer.relativeTo('.right-box', {
                    top: 0
                }).observe('#item' + index, res => {
                    if (res.intersectionRatio > 0) {
                        let id = res.id.substring(4);
                        this.leftMenuStatus(id);
                    }
                })
            })
        },

        // 设置左边菜单的滚动状态
        async leftMenuStatus(index) {
            this.current = index;
            // 如果为0，意味着尚未初始化
            if (this.menuHeight == 0 || this.menuItemHeight == 0) {
                await this.getElRect('menu-scroll-view', 'menuHeight');
                await this.getElRect('u-tab-item', 'menuItemHeight');
            }
            // console.log(index, this.arr[index]);
            // 将菜单活动item垂直居中
            this.scrollTop = index * this.menuItemHeight + this.menuItemHeight / 2 - this.menuHeight / 2;
        },

        // 右边菜单滚动
        async rightScroll(e) {
            this.oldScrollTop = e.detail.scrollTop;
            if (this.arr.length == 0) {
                await this.getMenuItemTop();
            }
            if (this.timer) return;
            if (!this.menuHeight) {
                await this.getElRect('menu-scroll-view', 'menuHeight');
            }
            setTimeout(() => { // 节流
                this.timer = null;
                // scrollHeight为右边菜单垂直中点位置
                let scrollHeight = e.detail.scrollTop + this.menuHeight / 2;
                for (let i = 0; i < this.arr.length; i++) {
                    let height1 = this.arr[i];
                    let height2 = this.arr[i + 1];

                    // 如果不存在height2，意味着数据循环已经到了最后一个，设置左边菜单为最后一项即可
                    if (!height2 || scrollHeight >= height1 && scrollHeight < height2) {
                        this.leftMenuStatus(i - 1);
                        return;
                    }
                }
            }, 50)
        },

        // 获取右边菜单每个item到顶部的距离
        getMenuItemTop() {
            new Promise(resolve => {
                let selectorQuery = uni.createSelectorQuery();
                console.log(selectorQuery);
                selectorQuery.selectAll('.class-item').boundingClientRect((rects) => {
                    console.log(rects);
                    // 如果节点尚未生成，rects值为[](因为用selectAll，所以返回的是数组)，循环调用执行
                    if (!rects.length) {
                        setTimeout(() => {
                            this.getMenuItemTop();
                        }, 10);
                        return;
                    }
                    rects.forEach((rect) => {
                        // 这里减去rects[0].top，是因为第一项顶部可能不是贴到导航栏(比如有个搜索框的情况)
                        this.arr.push(rect.top - rects[0].top);
                        resolve();
                    })
                }).exec()
            })
        },
        clickFunc({ type, bigObj, smallObj }) {
            switch (type) {
                case "industry":
                    this.industryModal.industryShow = true;
                    break;
                case "address":
                    this.areaModal.addressShow = true
                    break;

                default:
                    this.$set(this.submitData, bigObj.name, smallObj.id);
                    console.log(this.submitData);
                    break;
            }

        },
        changeHandler(e) {
            const {
                columnIndex,
                value,
                values, // values为当前变化列的数组内容
                index,
                // 微信小程序无法将picker实例传出来，只能通过ref操作
                picker = this.$refs.uPicker
            } = e
            // 当第一列值发生变化时，变化第二列(后一列)对应的选项
            if (columnIndex === 0) {
                // picker为选择器this实例，变化第二列对应的选项
                picker.setColumnValues(1, this.columnData[index])
            }
        },

        confirmAddress(val) {
            console.log(val);
            var valArr = val.value;
            this.areaModal.address = [...new Set(val.value)].join(' / ')
            console.log(this.areaModal.address);
            this.areaModal.addressShow = false
        },
        pickerIndustryFunc(val) {
            console.log(val);
            this.industryModal.industry = val.value[0].name;
            this.industryModal.industryShow = false
        }


    }
}
</script>



<style lang="scss" scoped>
.u-wrap {
    height: calc(100vh);
    /* #ifdef H5 */
    height: calc(100vh - var(--window-top));
    /* #endif */
    display: flex;
    flex-direction: column;
}

.u-search-box {
    padding: 18rpx 30rpx;
}

.u-menu-wrap {
    flex: 100;
    display: flex;
    overflow: hidden;
}

.u-search-inner {
    background-color: rgb(234, 234, 234);
    border-radius: 100rpx;
    display: flex;
    align-items: center;
    padding: 10rpx 16rpx;
}

.u-search-text {
    font-size: 26rpx;
    color: #ccc;
    margin-left: 10rpx;
}

.u-tab-view {
    width: 200rpx;
    height: 100%;
}

.u-tab-item {
    height: 110rpx;
    background: #f6f6f6;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26rpx;
    color: #444;
    font-weight: 400;
    line-height: 1;
}

.u-tab-item-active {
    position: relative;
    color: #000;
    font-size: 30rpx;
    font-weight: 600;
    background: #fff;
}

.u-tab-item-active::before {
    content: "";
    position: absolute;
    border-left: 4px solid skyblue;
    height: 32rpx;
    left: 0;
    top: 39rpx;
}

.u-tab-view {
    height: 100%;
}

.right-box {
    background-color: rgb(250, 250, 250);
}

.page-view {
    padding: 8rpx;
}

.class-item {
    margin-bottom: 30rpx;
    background-color: #fff;
    padding: 16rpx;
    border-radius: 8rpx;
}

.class-item:last-child {
    min-height: 100vh;
}

.item-title {
    font-size: 28rpx;
    font-weight: bold;
}

.item-menu-name {
    font-weight: normal;
    font-size: 26rpx;

}

.item-container {
    display: flex;
    flex-wrap: wrap;
}

.thumb-box {
    width: 43%;
    line-height: 80rpx;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin-top: 25rpx;
    margin-left: 20rpx;
    background-color: #f3f4f8;
    border: 1px solid #f3f4f8;
    color: #666666;
}

.thumb-box1 {
    width: 90%;

}

.selected-box {
    background-color: #e3eafe;
    border: 1px solid #92adfb;
    color: #92adfb !important;
}

.item-menu-image {
    width: 120rpx;
    height: 120rpx;
}

.buttonWrapper {
    // position: absolute;
    // bottom: 10px;
    display: flex;
    justify-content: space-around;
    margin-bottom: -10px;
    margin-top: 10px;
}

.cancelButton {
    padding: 15rpx 30rpx;
    background-color: #f3f4f8;
    border-radius: 5px;
    color: #9b9b9b;
}

.sureButton {
    padding: 15rpx 150rpx;
    background-color: #4171f9;
    color: #fff;
    border-radius: 5px;
}
</style>
