<template>
  <Dialog v-model="dialogVisible" title="菜单权限" width="800">
    <el-form ref="formRef" v-loading="formLoading" :model="formData" label-width="80px">
      <el-form-item label="角色名称">
        <el-tag>{{ formData.name }}</el-tag>
      </el-form-item>
      <el-form-item label="角色标识">
        <el-tag>{{ formData.code }}</el-tag>
      </el-form-item>
      <el-form-item label="权限范围">
        <el-select v-model="formData.dataScope">
          <el-option
            v-for="item in getIntDictOptions(DICT_TYPE.SYSTEM_DATA_SCOPE)"
            :key="item.value"
            :label="item.label"
            :value="item.value"
          />
        </el-select>
      </el-form-item>
    </el-form>
    <el-form-item
      v-if="formData.dataScope === SystemDataScopeEnum.DEPT_CUSTOM"
      label="权限范围"
      style="display: flex"
    >
      <el-card class="card" shadow="never">
        <template #header>
          全选/全不选:
          <el-switch
            v-model="treeNodeAll"
            active-text="是"
            inactive-text="否"
            inline-prompt
            @change="handleCheckedTreeNodeAll()"
          />
          全部展开/折叠:
          <el-switch
            v-model="deptExpand"
            active-text="展开"
            inactive-text="折叠"
            inline-prompt
            @change="handleCheckedTreeExpand"
          />
          父子联动(选中父节点，自动选择子节点):
          <el-switch v-model="checkStrictly" active-text="是" inactive-text="否" inline-prompt />
        </template>
        <el-tree
          ref="treeRef"
          :check-strictly="!checkStrictly"
          :data="deptOptions"
          :props="defaultProps"
          default-expand-all
          empty-text="加载中，请稍后"
          node-key="id"
          show-checkbox
        />
      </el-card>
    </el-form-item>
    <template #footer>
      <el-button :disabled="formLoading" type="primary" @click="submitForm">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script lang="ts" setup>
import { DICT_TYPE, getIntDictOptions } from '@/utils/dict'
import { defaultProps, handleTree } from '@/utils/tree'
import { SystemDataScopeEnum } from '@/utils/constants'
import * as RoleApi from '@/api/system/role'
import * as DeptApi from '@/api/system/dept'
import * as PermissionApi from '@/api/system/permission'

defineOptions({ name: 'SystemRoleDataPermissionForm' })

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formData = reactive({
  id: 0,
  name: '',
  code: '',
  dataScope: undefined,
  dataScopeDeptIds: []
})
const formRef = ref() // 表单 Ref
const deptOptions = ref<any[]>([]) // 部门树形结构
const deptExpand = ref(true) // 展开/折叠
const treeRef = ref() // 菜单树组件 Ref
const treeNodeAll = ref(false) // 全选/全不选
const checkStrictly = ref(true) // 是否严格模式，即父子不关联

/** 打开弹窗 */
const open = async (row: RoleApi.RoleVO) => {
  dialogVisible.value = true
  resetForm()
  // 加载 Dept 列表。注意，必须放在前面，不然下面 setChecked 没数据节点
  deptOptions.value = handleTree(await DeptApi.getSimpleDeptList())
  // 设置数据
  formData.id = row.id
  formData.name = row.name
  formData.code = row.code
  formData.dataScope = row.dataScope
  await nextTick()
  row.dataScopeDeptIds?.forEach((deptId: number): void => {

  await nextTick()
  // 需要在 DOM 渲染完成后，再设置选中状态
  row.dataScopeDeptIds?.forEach((deptId: number): void => {
    treeRef.value.setChecked(deptId, true, false)
  })
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  formLoading.value = true
  try {
    const data = {
      roleId: formData.id,
      dataScope: formData.dataScope,
      dataScopeDeptIds:
        formData.dataScope !== SystemDataScopeEnum.DEPT_CUSTOM
          ? []
          : treeRef.value.getCheckedKeys(false)
    }
    await PermissionApi.assignRoleDataScope(data)
    message.success(t('common.updateSuccess'))
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  // 重置选项
  treeNodeAll.value = false
  deptExpand.value = true
  checkStrictly.value = true
  // 重置表单
  formData.value = {
    id: 0,
    name: '',
    code: '',
    dataScope: undefined,
    dataScopeDeptIds: []
  }
  treeRef.value?.setCheckedNodes([])
  formRef.value?.resetFields()
}

/** 全选/全不选 */
const handleCheckedTreeNodeAll = () => {
  treeRef.value.setCheckedNodes(treeNodeAll.value ? deptOptions.value : [])
}

/** 展开/折叠全部 */
const handleCheckedTreeExpand = () => {
  const nodes = treeRef.value?.store.nodesMap
  for (let node in nodes) {
    if (nodes[node].expanded === deptExpand.value) {
      continue
    }
    nodes[node].expanded = deptExpand.value
  }
}
</script>
