<template>
  <a-spin :spinning="loading">
    <template v-if="treeData.length > 0">
      <BasicTree
          ref="basicTree"
          class="depart-rule-tree"
          checkable
          :treeData="treeData"
          :checkedKeys="checkedKeys"
          :selectedKeys="selectedKeys"
          :expandedKeys="expandedKeys"
          :checkStrictly="checkStrictly"
          style="height:500px; overflow: auto;"
          @check="onCheck"
          @expand="onExpand"
          @select="onSelect"
      >
        <template #title="{slotTitle, ruleFlag}">
          <span>{{ slotTitle }}</span>
          <Icon v-if="ruleFlag" icon="ant-design:align-left-outlined" style="margin-left:5px;color: red;"/>
        </template>
      </BasicTree>
    </template>
    <a-empty v-else description="无可配置部门权限"/>

    <div class="j-box-bottom-button offset-20" style="margin-top: 30px;">
      <div class="j-box-bottom-button-float">
        <a-dropdown :trigger="['click']" placement="topCenter">
          <template #overlay>
            <a-menu>
              <a-menu-item key="3" @click="toggleCheckALL(true)">全部勾选</a-menu-item>
              <a-menu-item key="4" @click="toggleCheckALL(false)">取消全选</a-menu-item>
              <a-menu-item key="5" @click="toggleExpandAll(true)">展开所有</a-menu-item>
              <a-menu-item key="6" @click="toggleExpandAll(false)">收起所有</a-menu-item>
            </a-menu>
          </template>
          <a-button style="float: left">
            树操作
            <Icon icon="ant-design:up-outlined"/>
          </a-button>
        </a-dropdown>
        <a-button type="primary" preIcon="ant-design:save-filled" @click="onSubmit">保存</a-button>
      </div>
    </div>
  </a-spin>
  <DepartDataRuleDrawer @register="registerDataRuleDrawer"/>
</template>

<script lang="ts" setup>
import { watch, computed, inject, ref, nextTick } from 'vue'
import { useDrawer } from '/@/components/Drawer'
import { BasicTree } from '/@/components/Tree/index'
import DepartDataRuleDrawer from './DepartDataRuleDrawer.vue'
import { queryRoleTreeList, queryDepartPermission, saveDepartPermission } from '../depart.api'

const props = defineProps({
  data: { type: Object, default: () => ({}) },
})
// 当前选中的部门ID，可能会为空，代表未选择部门
const departId = computed(() => props.data?.id)

const prefixCls = inject('prefixCls')
const basicTree = ref()
const loading = ref<boolean>(false)
const treeData = ref<any[]>([])
const expandedKeys = ref<Array<any>>([])
const selectedKeys = ref<Array<any>>([])
const checkedKeys = ref<Array<any>>([])
const lastCheckedKeys = ref<Array<any>>([])
const checkStrictly = ref(true)

// 注册数据规则授权弹窗抽屉
const [registerDataRuleDrawer, dataRuleDrawer] = useDrawer()

// onCreated
loadData()
watch(departId, () => loadDepartPermission(), { immediate: true })

async function loadData() {
  try {
    loading.value = true
    let { treeList } = await queryRoleTreeList()
    treeData.value = treeList
    await nextTick()
    toggleExpandAll(true)
  } finally {
    loading.value = false
  }
}

async function loadDepartPermission() {
  if (departId.value) {
    try {
      loading.value = true
      let keys = await queryDepartPermission({ departId: departId.value })
      checkedKeys.value = keys
      lastCheckedKeys.value = [...keys]
    } finally {
      loading.value = false
    }
  }
}

async function onSubmit() {
  try {
    loading.value = true
    await saveDepartPermission({
      departId: departId.value,
      permissionIds: checkedKeys.value.join(','),
      lastpermissionIds: lastCheckedKeys.value.join(','),
    })
    await loadData()
    await loadDepartPermission()
  } finally {
    loading.value = false
  }
}

// tree勾选复选框事件
function onCheck(event) {
  if (!Array.isArray(event)) {
    checkedKeys.value = event.checked
  } else {
    checkedKeys.value = event
  }
}

// tree展开事件
function onExpand($expandedKeys) {
  expandedKeys.value = $expandedKeys
}

// tree选中事件
function onSelect($selectedKeys, { selectedNodes }) {
  if (selectedNodes[0]?.props?.ruleFlag) {
    let functionId = $selectedKeys[0]
    dataRuleDrawer.openDrawer(true, { departId, functionId })
  }
  selectedKeys.value = []
}

// 切换父子关联
async function toggleCheckStrictly(flag) {
  checkStrictly.value = flag
  await nextTick()
  checkedKeys.value = basicTree.value.getCheckedKeys()
}

// 切换展开收起
async function toggleExpandAll(flag) {
  basicTree.value.expandAll(flag)
  await nextTick()
  expandedKeys.value = basicTree.value.getExpandedKeys()
}

// 切换全选
async function toggleCheckALL(flag) {
  basicTree.value.checkAll(flag)
  await nextTick()
  checkedKeys.value = basicTree.value.getCheckedKeys()
}
</script>

<style lang="less" scoped>

// 【VUEN-188】解决滚动条不灵敏的问题
.depart-rule-tree ::v-deep(.scrollbar__bar) {
  pointer-events: none;
}
</style>