<template>
  <Dialog v-model="dialogVisible" title="分配角色">
    <el-form ref="formRef" v-loading="formLoading" :model="formData" :rules="formRules" label-width="80px">
      <el-form-item label="用户名称">
        <el-input v-model="formData.username" :disabled="true" />
      </el-form-item>
      <el-form-item label="用户昵称">
        <el-input v-model="formData.nickname" :disabled="true" />
      </el-form-item>
      <el-form-item label="角色" prop="roleIds">
        <el-select v-model="formData.roleIds" multiple placeholder="请选择角色">
          <el-option v-for="item in roleList" :key="item.id" :label="item.name" :value="item.id" />
        </el-select>
      </el-form-item>
    </el-form>
    <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 * as PermissionApi from '@/api/system/permission'
import * as UserApi from '@/api/system/user'
import * as RoleApi from '@/api/system/role'

defineOptions({ name: 'SystemUserAssignRoleForm' })

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 = ref({
  id: undefined,
  nickname: '',
  username: '',
  roleIds: []
})
const formRules = reactive({
  roleIds: [{ required: true, message:'请选择角色', trigger: 'change' }]
})
const formRef = ref() // 表单 Ref
const roleList = ref([]) // 角色的列表

/** 打开弹窗 */
const open = async (row: UserApi.UserVO) => {
  dialogVisible.value = true
  resetForm()
  // 设置数据
  formData.value.id = row.id
  formData.value.username = row.username
  formData.value.nickname = row.nickname
  // 获得角色拥有的菜单集合
  formLoading.value = true
  try {
    formData.value.roleIds = await PermissionApi.getUserRoleList(row.id)
  } finally {
    formLoading.value = false
  }
  // 获得角色列表
  roleList.value = await RoleApi.getSimpleRoleList()
}
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 () => {
  // 校验表单
  if (!formRef) return
  const valid = await formRef.value.validate()
  if (!valid) return
  // 提交请求
  formLoading.value = true
  try {
    await PermissionApi.assignUserRole({
      userId: formData.value.id,
      roleIds: formData.value.roleIds
    })
    message.success(t('common.updateSuccess'))
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success', true)
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    nickname: '',
    username: '',
    roleIds: []
  }
  formRef.value?.resetFields()
}
</script>
