<template>
  <div>
    <warning-bar
      title="获取字典且缓存方法已在前端utils/dictionary 已经封装完成 不必自己书写 使用方法查看文件内注释"
    />
    <el-splitter class="h-full">
      <el-splitter-panel size="400px" min="200px" max="800px" collapsible>
        <div
          class="flex-none bg-white text-slate-700 dark:text-slate-400 dark:bg-slate-900 rounded p-4"
        >
          <div class="flex justify-between items-center relative">
            <span class="text font-bold">字典列表</span>
            <el-input
              class="!absolute top-0 left-0 z-2 ease-in-out animate-slide-left"
              placeholder="搜索"
              v-if="showSearchInput"
              v-model="searchName"
              clearable
              :autofocus="showSearchInput"
              @clear="clearSearchInput"
              :prefix-icon="Search"
              v-click-outside="handleCloseSearchInput"
              @keydown="handleInputKeyDown"
            >
              <template #append>
                <el-button
                  :type="searchName ? 'primary' : 'info'"
                  @click="getTableData"
                  >搜索</el-button
                >
              </template>
            </el-input>
            <el-button
              class="ml-auto"
              :icon="Search"
              @click="showSearchInputHandler"
            ></el-button>
            <el-button type="primary" @click="openDrawer" :icon="Plus">
            </el-button>
          </div>
          <el-scrollbar class="mt-4" style="height: calc(100vh - 300px)">
            <div
              v-for="dictionary in dictionaryData"
              :key="dictionary.ID"
              class="rounded flex justify-between items-center px-2 py-4 cursor-pointer mt-2 hover:bg-blue-50 dark:hover:bg-blue-900 bg-gray-50 dark:bg-gray-800 gap-4"
              :class="[
                selectID === dictionary.ID
                  ? 'text-active'
                  : 'text-slate-700 dark:text-slate-50',
                dictionary.parentID ? 'ml-4 border-l-2 border-blue-200' : ''
              ]"
              @click="toDetail(dictionary)"
            >
              <div class="max-w-[160px] truncate">
                <span
                  v-if="dictionary.parentID"
                  class="text-xs text-gray-400 mr-1"
                  >└─</span
                >
                {{ dictionary.name }}
                <span class="mr-auto text-sm">（{{ dictionary.type }}）</span>
              </div>

              <div class="min-w-[40px]">
                <el-icon
                  class="text-blue-500"
                  @click.stop="updateSysDictionaryFunc(dictionary)"
                >
                  <Edit />
                </el-icon>
                <el-icon
                  class="ml-2 text-red-500"
                  @click="deleteSysDictionaryFunc(dictionary)"
                >
                  <Delete />
                </el-icon>
              </div>
            </div>
          </el-scrollbar>
        </div>
      </el-splitter-panel>
      <el-splitter-panel :min="200">
        <div
          class="flex-1 bg-white text-slate-700 dark:text-slate-400 dark:bg-slate-900"
        >
          <sysDictionaryDetail :sys-dictionary-i-d="selectID" />
        </div>
      </el-splitter-panel>
    </el-splitter>

    <el-drawer
      v-model="drawerFormVisible"
      :size="appStore.drawerSize"
      :show-close="false"
      :before-close="closeDrawer"
    >
      <template #header>
        <div class="flex justify-between items-center">
          <span class="text-lg">{{
            type === 'create' ? '添加字典' : '修改字典'
          }}</span>
          <div>
            <el-button @click="closeDrawer"> 取 消 </el-button>
            <el-button type="primary" @click="enterDrawer"> 确 定 </el-button>
          </div>
        </div>
      </template>
      <el-form
        ref="drawerForm"
        :model="formData"
        :rules="rules"
        label-width="110px"
      >
        <el-form-item label="父级字典" prop="parentID">
          <el-select
            v-model="formData.parentID"
            placeholder="请选择父级字典（可选）"
            clearable
            filterable
            :style="{ width: '100%' }"
          >
            <el-option
              v-for="dict in availableParentDictionaries"
              :key="dict.ID"
              :label="`${dict.name}（${dict.type}）`"
              :value="dict.ID"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="字典名（中）" prop="name">
          <el-input
            v-model="formData.name"
            placeholder="请输入字典名（中）"
            clearable
            :style="{ width: '100%' }"
          />
        </el-form-item>
        <el-form-item label="字典名（英）" prop="type">
          <el-input
            v-model="formData.type"
            placeholder="请输入字典名（英）"
            clearable
            :style="{ width: '100%' }"
          />
        </el-form-item>
        <el-form-item label="状态" prop="status" required>
          <el-switch
            v-model="formData.status"
            active-text="开启"
            inactive-text="停用"
          />
        </el-form-item>
        <el-form-item label="描述" prop="desc">
          <el-input
            v-model="formData.desc"
            placeholder="请输入描述"
            clearable
            :style="{ width: '100%' }"
          />
        </el-form-item>
      </el-form>
    </el-drawer>
  </div>
</template>

<script setup>
  import {
    createSysDictionary,
    deleteSysDictionary,
    updateSysDictionary,
    findSysDictionary,
    getSysDictionaryList
  } from '@/api/sysDictionary' // 此处请自行替换地址
  import WarningBar from '@/components/warningBar/warningBar.vue'
  import { ref } from 'vue'
  import { ElMessage, ElMessageBox } from 'element-plus'

  import sysDictionaryDetail from './sysDictionaryDetail.vue'
  import { Edit, Plus, Search } from '@element-plus/icons-vue'
  import { useAppStore } from '@/pinia'

  defineOptions({
    name: 'SysDictionary'
  })

  const appStore = useAppStore()

  const selectID = ref(0)

  const formData = ref({
    name: null,
    type: null,
    status: true,
    desc: null,
    parentID: null
  })
  const searchName = ref('')
  const showSearchInput = ref(false)
  const rules = ref({
    name: [
      {
        required: true,
        message: '请输入字典名（中）',
        trigger: 'blur'
      }
    ],
    type: [
      {
        required: true,
        message: '请输入字典名（英）',
        trigger: 'blur'
      }
    ],
    desc: [
      {
        required: true,
        message: '请输入描述',
        trigger: 'blur'
      }
    ]
  })

  const dictionaryData = ref([])
  const availableParentDictionaries = ref([])

  // 查询
  const getTableData = async () => {
    const res = await getSysDictionaryList({
      name: searchName.value.trim()
    })
    if (res.code === 0) {
      dictionaryData.value = res.data
      selectID.value = res.data[0].ID
      // 更新可选父级字典列表
      updateAvailableParentDictionaries()
    }
  }

  // 更新可选父级字典列表
  const updateAvailableParentDictionaries = () => {
    // 如果是编辑模式，排除当前字典及其子字典
    if (type.value === 'update' && formData.value.ID) {
      availableParentDictionaries.value = dictionaryData.value.filter(
        (dict) => {
          return (
            dict.ID !== formData.value.ID &&
            !isChildDictionary(dict.ID, formData.value.ID)
          )
        }
      )
    } else {
      // 创建模式，显示所有字典
      availableParentDictionaries.value = [...dictionaryData.value]
    }
  }

  // 检查是否为子字典（防止循环引用）
  const isChildDictionary = (dictId, parentId) => {
    const dict = dictionaryData.value.find((d) => d.ID === dictId)
    if (!dict || !dict.parentID) return false
    if (dict.parentID === parentId) return true
    return isChildDictionary(dict.parentID, parentId)
  }

  getTableData()

  const toDetail = (row) => {
    selectID.value = row.ID
  }

  const drawerFormVisible = ref(false)
  const type = ref('')
  const updateSysDictionaryFunc = async (row) => {
    const res = await findSysDictionary({ ID: row.ID, status: row.status })
    type.value = 'update'
    if (res.code === 0) {
      formData.value = res.data.resysDictionary
      drawerFormVisible.value = true
      // 更新可选父级字典列表
      updateAvailableParentDictionaries()
    }
  }
  const closeDrawer = () => {
    drawerFormVisible.value = false
    formData.value = {
      name: null,
      type: null,
      status: true,
      desc: null,
      parentID: null
    }
  }
  const deleteSysDictionaryFunc = async (row) => {
    ElMessageBox.confirm('确定要删除吗?', '提示', {
      confirmButtonText: '确定',
      cancelButtonText: '取消',
      type: 'warning'
    }).then(async () => {
      const res = await deleteSysDictionary({ ID: row.ID })
      if (res.code === 0) {
        ElMessage({
          type: 'success',
          message: '删除成功'
        })
        getTableData()
      }
    })
  }

  const drawerForm = ref(null)
  const enterDrawer = async () => {
    drawerForm.value.validate(async (valid) => {
      if (!valid) return
      let res
      switch (type.value) {
        case 'create':
          res = await createSysDictionary(formData.value)
          break
        case 'update':
          res = await updateSysDictionary(formData.value)
          break
        default:
          res = await createSysDictionary(formData.value)
          break
      }
      if (res.code === 0) {
        ElMessage.success('操作成功')
        closeDrawer()
        getTableData()
      }
    })
  }
  const openDrawer = () => {
    type.value = 'create'
    drawerForm.value && drawerForm.value.clearValidate()
    drawerFormVisible.value = true
    // 更新可选父级字典列表
    updateAvailableParentDictionaries()
  }

  const clearSearchInput = () => {
    if (!showSearchInput.value) return
    searchName.value = ''
    showSearchInput.value = false
    getTableData()
  }
  const handleCloseSearchInput = () => {
    if (!showSearchInput.value || searchName.value.trim() != '') return
    showSearchInput.value = false
  }

  const showSearchInputHandler = () => {
    showSearchInput.value = true
  }

  const handleInputKeyDown = (e) => {
    if (e.key === 'Enter' && searchName.value.trim() !== '') {
      getTableData()
    }
  }
</script>

<style>
  .dict-box {
    height: calc(100vh - 240px);
  }

  .active {
    background-color: var(--el-color-primary) !important;
    color: #fff;
  }
</style>
