<!--
 * @Date: 2022-08-29 14:31:20
 * @LastEditors: hookehuyr hookehuyr@gmail.com
 * @LastEditTime: 2024-07-26 15:44:51
 * @FilePath: /data-table/src/components/OrgPickerField/MyComponent.vue
 * @Description: 树形组件
-->
<template>
  <div class="tree-field-page">
    <div class="select-tree-box" @click="openTree">
      <div class="select-tree-item" v-for="(dept) in emitCheckedGroup.dept" :key="dept.id" @click="clickNode(dept)">
        {{ dept.name }}
      </div>
      <div class="select-tree-item" v-for="(role) in emitCheckedGroup.role" :key="role.id" @click="clickNode(role)">
        {{ role.name }}
      </div>
      <div class="select-tree-item" v-for="(user) in emitCheckedGroup.user" :key="user.id" @click="clickNode(user)">
        {{ user.name }}
      </div>
    </div>

    <van-popup
      v-model:show="showPopover"
      position="bottom"
      :close-on-click-overlay="false"
      :style="{ height: '90vh' }"
    >
      <div v-if="!is_search" class="search-box" @click="onSearchFocus">
        <van-icon name="search" size="1.1rem" />&nbsp;点击搜索
      </div>
      <van-field
        v-else
        ref="searchInputRef"
        v-model="searchValue"
        placeholder="可通过名称，手机号或邮箱查询"
        :border="false"
        @blur="onSearchBlur"
        @focus="onSearchFocus"
      >
        <template #button>
          <van-button size="small" type="primary" @click="onCloseSearch">关闭</van-button>
        </template>
      </van-field>

      <div class="select-box">
        <div class="select-item" v-for="(dept) in checkedGroup.dept" :key="dept.id">
          {{ dept.name }}&nbsp;<van-icon @click="onRemoveDeptTag(dept)" name="close" />
        </div>
        <div class="select-item" v-for="(role) in checkedGroup.role" :key="role.id">
          {{ role.name }}&nbsp;<van-icon @click="onRemoveRoleTag(role)" name="close" />
        </div>
        <div class="select-item" v-for="(user) in checkedGroup.user" :key="user.id">
          {{ user.name }}&nbsp;<van-icon @click="onRemoveUserTag(user)" name="close" />
        </div>
      </div>

      <div v-show="!is_search" class="tab-tree-container">
        <van-tabs ref="tabRef" :color="styleColor.baseColor" v-model:active="tabActive" @click-tab="onClickTab" style="margin-bottom: 1rem;">
          <!-- <van-tab title="组织结构" :name="0"></van-tab>
          <van-tab title="角色" :name="1"></van-tab>
          <van-tab title="成员" :name="2"></van-tab> -->
          <van-tab v-for="(tab, index) in tabList" :key="index" :title="tab.title" :name="tab.name"></van-tab>
        </van-tabs>

        <div v-show="tabActive === 0" style="padding: 0 0 0 1rem;">
          <Vtree
            id="deptTree"
            ref="deptTreeRef"
            v-model="select_dept_value"
            checkable
            titleField="name"
            keyField="id"
            :expandOnFilter="false"
            :showCheckedButton="false"
            :showFooter="false"
            :cascade="false"
            :defaultExpandAll="false"
            @checked-change="deptTreeCheckedChange"
            style=" height: 60vh; overflow: scroll;"
          >
            <span slot="empty">暂无数据</span>
          </Vtree>
        </div>

        <div v-if="tabActive === 1" style="padding: 0 0 0 1rem; overflow: scroll; height: 60vh;">
          <van-checkbox-group
            v-model="role_checked"
            @change="roleChangeMethod"
          >
            <van-checkbox
              v-for="(role, index) in roleList"
              :key="index"
              :name="role.id"
              shape="square"
              icon-size="13px"
              :checked-color="styleColor.baseColor"
              style="margin-bottom: 0.5rem;"
            >{{ role.name }}</van-checkbox>
          </van-checkbox-group>
          <div style="height: 10vh;"></div>
        </div>

        <div v-if="tabActive === 2" style="padding: 0 0 0 1rem;">
          <van-row gutter="">
            <van-col span="10" style="border-right: 1px solid #eee; height: 60vh; overflow: scroll;">
              <Vtree
                id="userTree"
                ref="userTreeRef"
                v-model="select_user_value"
                selectable
                titleField="name"
                keyField="id"
                :expandOnFilter="false"
                :showCheckedButton="false"
                @update:modelValue="() => {}"
                @click="onUserTreeClick"
              >
                <span slot="empty">暂无数据</span>
              </Vtree>
            </van-col>
            <van-col span="14"  style="height: 60vh; overflow: scroll;">
              <van-checkbox-group
                v-model="user_checked"
                style="padding: 0 0 1rem 1rem;"
                @change="onUserChange"
              >
                <van-checkbox

                @click="onCheckUserChange(user, $event)"
                v-for="(user, index) in userList"
                :id="user.id"
                :type="user.type"
                :text="user.name"
                :key="index"
                :name="user.id"
                shape="square"
                icon-size="13px"
                :checked-color="styleColor.baseColor" style="margin-bottom: 0.5rem;">{{ user.name }}</van-checkbox>
              </van-checkbox-group>
              <div style="height: 10vh;"></div>
            </van-col>
          </van-row>
        </div>
      </div>

      <div v-show="is_search" class="search-container">
        <van-checkbox-group
          v-model="search_result_checked"
          style="padding: 0 0 1rem 1rem;"
          @change="onSearchResultChange"
        >
        <div>
          <p style="font-weight: bold;">部门</p>
          <div style="border-top: 1px solid #eee; margin: 0.5rem 0;"></div>
          <div style="margin-bottom: 1rem;">
            <van-checkbox
              @click="onSearchResultClick(dept, $event)"
              v-for="(dept) in user_dept_role.dept"
              :id="dept.id"
              :type="dept.type"
              :text="dept.name"
              :key="dept.id"
              :name="dept.id"
              shape="square" icon-size="13px" :checked-color="styleColor.baseColor" style="margin-bottom: 0.5rem;">
              {{ dept.name }}
            </van-checkbox>
            <div v-if="!user_dept_role.dept.length" style="color: #999;">暂无数据</div>
          </div>
        </div>
        <div>
          <p>角色</p>
          <div style="border-top: 1px solid #eee; margin: 0.5rem 0;"></div>
          <div style="margin-bottom: 1rem;">
            <van-checkbox
              @click="onSearchResultClick(role, $event)"
              v-for="(role) in user_dept_role.role"
              :id="role.id"
              :type="role.type"
              :text="role.name"
              :key="role.id"
              :name="role.id"
              shape="square" icon-size="13px" :checked-color="styleColor.baseColor" style="margin-bottom: 0.8rem;">
              {{ role.name }}
            </van-checkbox>
            <div v-if="!user_dept_role.role.length" style="color: #999;">暂无数据</div>
          </div>
        </div>
        <div>
          <p>成员</p>
          <div style="border-top: 1px solid #eee; margin: 0.5rem 0;"></div>
          <div style="margin-bottom: 1rem;">
            <van-checkbox
              @click="onSearchResultClick(user, $event)"
              v-for="(user) in user_dept_role.user"
              :id="user.id"
              :type="user.type"
              :text="user.name"
              :key="user.id"
              :name="user.id"
              shape="square" icon-size="13px" :checked-color="styleColor.baseColor" style="margin-bottom: 0.5rem;">
              {{ user.name }}
            </van-checkbox>
            <div v-if="!user_dept_role.user.length" style="color: #999;">暂无数据</div>
          </div>
        </div>
        </van-checkbox-group>
      </div>

      <div style="position: fixed; bottom: 0; left: 0; width: 100%;">
        <van-row gutter="10" style="padding: 0 10px 1rem;">
          <van-col span="12">
            <van-button block round type="default" @click="onCancelClick">取消</van-button>
          </van-col>
          <van-col span="12">
            <van-button block round type="primary" @click="onConfirmClick">确定</van-button>
          </van-col>
        </van-row>
      </div>
    </van-popup>

  </div>
</template>

<script setup>
import { inject, ref } from 'vue'
import { useCustomFieldValue } from '@vant/use';
import { styleColor } from "@/constant.js";
import { getFlowDeptListAPI, getFlowRoleListAPI, searchUserDeptRoleAPI } from "@/api/component.js";
// 大家可以根据需要是否引入VTreeNode, VTreeSearch, VTreeDrop
import Vtree, { VTreeNode, VTreeSearch, VTreeDrop } from '@wsfe/vue-tree'
import '@wsfe/vue-tree/style.css';
// import role_list from './flow_role_list.json'
// import dept_list from './flow_dept_list.json'
import $ from 'jquery';
import _ from 'lodash';
import { showDialog } from 'vant';

// 获取父组件传值
const props = inject('props');

const emit = defineEmits(["active"]);

const $route = useRoute();
const $router = useRouter();

let role_list = [];
let dept_list = [];

// 处理Tab显示问题
// TODO：等待后台数据
const tree_tabs = ['dept', 'role', 'user'];
const tabList = computed(() => {
  let arr = [];
  if (tree_tabs.indexOf('dept') !== -1) {
    arr.push({
      title: '组织结构',
      name: 0
    })
  }
  if (tree_tabs.indexOf('role') !== -1) {
    arr.push({
      title: '角色',
      name: 1
    })
  }
  if (tree_tabs.indexOf('user') !== -1) {
    arr.push({
      title: '成员',
      name: 2
    })
  }
  return arr;
});

onMounted(async () => {
  // TAG: 获取后台数据
  const flowDeptList = await getFlowDeptListAPI({ form_code: $route.query.code });
  if (flowDeptList.code) {
    role_list = flowDeptList.data;
  }
  const flowRoleList = await getFlowRoleListAPI({ form_code: $route.query.code });
  if (flowRoleList.code) {
    dept_list = flowRoleList.data;
  }
  // 获取已选中数据
  // 如果有默认值处理
  props.value = props.component_props.default;
  if (props.value) {
    props.value.forEach(item => {
      if (item.type === 'dept') {
        emitCheckedGroup.value.dept.push(item);
      } else if (item.type === 'role') {
        emitCheckedGroup.value.role.push(item);
      } else if (item.type === 'user') {
        emitCheckedGroup.value.user.push(item);
      }
    });
    // 发送到表单数据
    tree_select_value.value = [].concat(...Object.values(emitCheckedGroup.value));
  }
});

const openTree = () => {
  if (props.component_props.readonly) return false; // 只读判断
  // 打开弹窗
  showPopover.value = true;
  // 获取数据
  nextTick(() => {
    getDeptTreeData();
    // 获取已选择的数据
    checkedGroup.value = _.cloneDeep(emitCheckedGroup.value);
    syncResultToList(); // 同步勾选状态

    // 树形结构底部高度可视度
    if (!$('#deptTree').find('.tree-placeholder').length) {
      $('#deptTree').find('.ctree-tree__block-area').append('<div class="tree-placeholder" style="height: 10vh;"></div>');
    }

  });
}

// TODO：等待后台数据显示更多详情字段
const clickNode = (node) => { // 点击显示选择详情
  if (!props.component_props.readonly) return false; // 非只读不予许操作
  // TODO：暂时隐藏等待后续接口提供更多字段 显示
  // showDialog({
  //   title: '详情',
  //   message: `${node.id}-${node.name}-${node.type}`,
  //   confirmButtonColor: styleColor.baseColor
  // }).then(() => {
  //   // on close
  // });
}

const emitCheckedGroup = ref({
  dept: [], // 组织结构
  role: [], // 角色
  user: [] // 成员
});

const tree_select_value = ref([]);

const onCancelClick = () => {
  showPopover.value = false;
}
const onConfirmClick = () => {
  showPopover.value = false;
  if (is_search.value) {
    onCloseSearch()
  }
  //
  emitCheckedGroup.value = _.cloneDeep(checkedGroup.value);
  // 发送到表单数据
  tree_select_value.value = [].concat(...Object.values(emitCheckedGroup.value));
}

/******* 搜索输入项 *******/
const showPopover = ref(false); // 显示/隐藏弹框

const searchInputRef = ref(null);
const searchValue = ref('');
const is_search = ref(false); // 默认不显示搜索框
/**
 * 搜索选中结果集
 * @param {Number} id
 */
const search_result_checked = ref([]);

const onSearchBlur = async () => { // 搜索框失去焦点
  const { code, data } = await searchUserDeptRoleAPI({ form_code: $route.query.code, word: searchValue.value })
  if (code) {
    user_dept_role.value = data;
  }
}

const onSearchFocus = () => { // 搜索框获取焦点回调
  is_search.value = true; // 打开搜索状态

  // 自动选中搜索框
  nextTick(() => {
    searchInputRef.value.focus();
  });

  // 如果选中框有值，点击搜索框后把结果选中到搜索结果集里面
  handleSelectToSearch();
}

const handleSelectToSearch = () => { // 把选中结果集同步，到搜索结果集上勾中显示
  let dept = checkedGroup.value.dept.map(item => item.id);
  let role = checkedGroup.value.role.map(item => item.id);
  let user = checkedGroup.value.user.map(item => item.id);
  search_result_checked.value = [...dept, ...role, ...user]; // 搜索选中结果集
}

const syncResultToList = () => { // 把弹框结果集同步到树形选择树的勾选状态
  // 组织结构，勾选状态还原
  deptTreeRef.value?.setCheckedKeys(checkedGroup.value.dept.map(item => item.id), true);
  // 角色选中，勾选状态还原
  role_checked.value = checkedGroup.value.role.map(item => item.id);
  // 成员选中，勾选状态还原
  user_checked.value = checkedGroup.value.user.map(item => item.id)
}

const onCloseSearch = () => { // 点击搜索关闭按钮回调
  searchValue.value = ''; // 清空搜索框
  user_dept_role.value = {
    dept: [],
    role: [],
    user: []
  }; // 清空搜索结果
  tabActive.value = 0; // 默认选中组织结构
  is_search.value = false; // 关闭搜索状态
  syncResultToList(); // 同步勾选状态
}
/****************************** END ********************************/

/**
 * 中间通用显示勾选结果集
 */

const checkedGroup = ref({
  dept: [], // 组织结构
  role: [], // 角色
  user: [] // 成员
});

const onRemoveDeptTag = (dept) => { // 移除部门标签
  // 移除选中框显示
  const index = checkedGroup.value.dept.findIndex(item => JSON.stringify(item) === JSON.stringify(dept));
  checkedGroup.value.dept.splice(index, 1);
  // 组织结构移除对应ID
  deptTreeRef.value?.setChecked(dept.id, false);
  // 移除搜索结果选中显示
  const idx = search_result_checked.value.findIndex(item => JSON.stringify(item) === JSON.stringify(dept));
  search_result_checked.value.splice(idx, 1);
}

const onRemoveRoleTag = (role) => { // 移除角色标签
  const index = checkedGroup.value.role.findIndex(item => JSON.stringify(item) === JSON.stringify(role));
  checkedGroup.value.role.splice(index, 1);
  //
  const idx = role_checked.value.findIndex(item => JSON.stringify(item) === JSON.stringify(role));
  role_checked.value.splice(index, 1);
  // 移除搜索结果选中显示
  const i = search_result_checked.value.findIndex(item => JSON.stringify(item) === JSON.stringify(role));
  search_result_checked.value.splice(i, 1);
}

const onRemoveUserTag = (user) => { // 移除成员标签
  const index = checkedGroup.value.user.findIndex(item => JSON.stringify(item) === JSON.stringify(user));
  checkedGroup.value.user.splice(index, 1);
  //
  const idx = user_checked.value.findIndex(item => JSON.stringify(item) === JSON.stringify(user));
  user_checked.value.splice(index, 1);
  // 移除搜索结果选中显示
  const i = search_result_checked.value.findIndex(item => JSON.stringify(item) === JSON.stringify(user));
  search_result_checked.value.splice(i, 1);
}

/*************** Tab 功能模块 ****************/
const tabRef = ref(null);
const tabActive = ref(0);
const deptTreeRef = ref();


const userList = ref([]);

const onClickTab = ({ title }) => { // tab点击事件
  nextTick(() => {
    if (title === '组织结构') {
      deptListReset();
    }
    if (title === '角色') {
      roleListReset();
    }
    if (title === '成员') {
      userListReset();
      // 树形结构底部高度可视度
      if (!$('#userTree').find('.tree-placeholder').length) {
        $('#userTree').find('.ctree-tree__block-area').append('<div class="tree-placeholder" style="height: 10vh;"></div>');
      }
    }
  });
};

const deptListReset = () => { // 组织重置列表
  deptTreeRef.value.setData(role_list);
  deptTreeRef.value.setExpand(35697, true)
}

const roleListReset = () => { // 角色重置列表
  roleList.value = dept_list;
}

const userListReset = () => { // 成员重置列表
  userTreeRef.value.setData(role_list);
  userTreeRef.value.setExpand(35697, true)
}
/**************** END *****************/

/************* 组织结构模块 ***************/
const select_dept_value = ref(); // 组织结构树形选中值

const getDeptTreeData = () => { // 获取组织结构数据
  deptTreeRef.value.setData(role_list);
  // 默认展开第一个
  deptTreeRef.value.setExpand(35697, true);
}

const deptTreeCheckedChange = (arr) => { // 组织结构勾选回调
  checkedGroup.value.dept = arr.map((item) => {
    return {
      id: item.id,
      name: item.name,
      type: 'dept'
    }
  });
}
/**************** END *****************/

/************* 角色模块 ***************/
const role_checked = ref([]); // 角色多选选中值
const roleList = ref([]);

const roleChangeMethod = (val) => { // 角色多选组点击回调
  let result = val.map(id => roleList.value.find(obj => obj.id === id));
  // 过滤掉未找到的项（即返回undefined的项）
  checkedGroup.value.role = result.filter(item => item !== undefined);
}
/**************** END *****************/

/************* 成员模块 ***************/
const userTreeRef = ref();
const select_user_value = ref(); // 成员树形选中值
const user_checked = ref([]); // 成员多选选中值

const onUserTreeClick = (node) => { // 点击成员树形回调
  userList.value = node.user;
  user_checked.value = checkedGroup.value.user.map(item => item.id)
}

const onUserChange = (val) => { // 成员多选组点击回调
}

const onCheckUserChange = (val, evt) => {
  nextTick(() => {
    let checked = false;
    let id = '';
    let name = '';
    let type = '';
    if ($(evt.target).attr('aria-checked') === undefined) {
      checked = $(evt.target).parents('.van-checkbox').attr('aria-checked');
      id = $(evt.target).parents('.van-checkbox').attr('id');
      name = $(evt.target).parents('.van-checkbox').attr('text');
      type = $(evt.target).parents('.van-checkbox').attr('type');
    } else {
      checked = $(evt.target).attr('aria-checked');
      id = $(evt.target).attr('id');
      name = $(evt.target).attr('text');
      type = $(evt.target).attr('type');
    }
    let obj = {
      id: +id,
      name,
      type
    }
    checkedGroup.value.user.push(obj);
    checkedGroup.value.user = _.uniqBy(checkedGroup.value.user, 'id');
    //
    if (checked === 'false') {
      if (val.type === 'user') {
        const index = checkedGroup.value.user.indexOf(val);
        checkedGroup.value.user.splice(index, 1);
      }
    }
  })
}
/**************** END *****************/

/***************** 搜索结果集模块 ********************/
const user_dept_role = ref({
  dept: [],
  role: [],
  user: []
});

const onSearchResultChange = (val) => { // 监听搜索结果集点击回调，结果集为选中项
}

const onSearchResultClick = (val, evt) => { // 搜索结果集项点击回调
  nextTick(() => {
    let checked = false;
    let id = '';
    let name = '';
    let type = '';

    if ($(evt.target).attr('aria-checked') === undefined) { // 点击子元素
      checked = $(evt.target).parents('.van-checkbox').attr('aria-checked');
      id = $(evt.target).parents('.van-checkbox').attr('id');
      name = $(evt.target).parents('.van-checkbox').attr('text');
      type = $(evt.target).parents('.van-checkbox').attr('type');
    } else { // 点击父元素
      checked = $(evt.target).attr('aria-checked');
      id = $(evt.target).attr('id');
      name = $(evt.target).attr('text');
      type = $(evt.target).attr('type');
    }

    let obj = { // 点击元素属性
      id: +id,
      name,
      type
    }

    // 对应类型添加到选中组
    checkedGroup.value[type].push(obj);
    checkedGroup.value[type] = _.uniqBy(checkedGroup.value[type], 'id');

    // 取消选中处理
    if (checked === 'false') {
      // 移除对应的数据集
      const index = checkedGroup.value[type].findIndex(item => item.id === obj.id);
      checkedGroup.value[type].splice(index, 1);

      if (type === 'dept') {
        // 树形 组织结构移除对应ID
        deptTreeRef.value?.setChecked(obj.id, false);
      }
    }
  });
}

// 此处传入的值会替代 Field 组件内部的 value
useCustomFieldValue(() => tree_select_value.value);

// defineExpose({ handleReset, show_control });
</script>

<style lang="less" scoped>
.tree-field-page {
  width: 100%;
  .select-tree-box {
    height: 4rem;
    // width: calc(100vw - 5rem);
    border: 1px dashed #dfdfdf;
    margin: 1rem 0;
    overflow: scroll;
    border-radius: 5px;
    padding: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    .select-tree-item {
      margin-right: 5px;
      margin-bottom: 5px;
      font-size: 0.85rem;
      padding: 5px 8px;
      background-color: #C2915F;
      color: #fff;
      height: 1.2rem;
      display: flex;
      justify-content: center;
      align-items: center;
    }
  }
}

:deep(.van-field__body) {
  border: 1px solid #eaeaea;
  border-radius: 0.25rem;
  padding: 0.25rem 0.5rem;
}

.search-box {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #eee;
  margin: 1rem;
  border-radius: 3px;
  padding: 0.6rem;
  font-size: 0.9rem;
}

:deep(.ctree-tree-node__checkbox_checked) {
  border-color: #C2915F;
  background-color: #C2915F;
}

:deep(.ctree-tree-node__title_selected) {
  background-color: #f8e2cb;
}

// :deep(.ctree-tree__scroll-area) {
//   margin-bottom: 2rem;
// }

.select-box {
  height: 4rem;
  border: 1px dashed #dfdfdf;
  margin: 0 1rem;
  overflow: scroll;
  border-radius: 5px;
  padding: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  .select-item {
    margin-right: 5px;
    margin-bottom: 5px;
    font-size: 0.85rem;
    padding: 5px 8px;
    background-color: #C2915F;
    color: #fff;
    height: 1.2rem;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}

.search-container {
  margin: 1rem 5px;
  height: 60vh;
  overflow: scroll;
}
</style>