<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryRef" :inline="true" v-show="showSearch" label-width="68px">
<!--      <el-form-item label="学校" prop="schoolId">-->
<!--        <el-input-->
<!--                v-model="queryParams.schoolId"-->
<!--                placeholder="请输入学校"-->
<!--                clearable-->
<!--                @keyup.enter="handleQuery"-->
<!--        />-->
<!--      </el-form-item>-->
      <el-form-item label="学校校区" prop="schoolId">
        <el-select
                v-model="queryParams.schoolId"
                placeholder="请选择所在校区"
                clearable
                :disabled="isExternalSchoolIdSet"
                style="width: 240px"
                @keyup.enter="handleQuery"
        >
          <el-option
                  v-for="item in schoolOptions"
                  :key="item.id"
                  :label="item.name"
                  :value="item.id"
          />
        </el-select>
      </el-form-item>
      <el-form-item label="毕业年份" prop="year">
        <el-input
                v-model="queryParams.year"
                placeholder="请输入毕业年份"
                clearable
                @keyup.enter="handleQuery"
        />
      </el-form-item>
      <el-form-item label="班级名称" prop="name">
        <el-input
                v-model="queryParams.name"
                placeholder="请输入班级名称"
                clearable
                @keyup.enter="handleQuery"
        />
      </el-form-item>
<!--      <el-form-item label="是否线上" prop="online">-->
<!--        <el-select v-model="queryParams.online" placeholder="请选择是否线上" clearable style="width: 170px;">-->
<!--          <el-option-->
<!--                  v-for="dict in bool_values"-->
<!--                  :key="dict.value"-->
<!--                  :label="dict.label"-->
<!--                  :value="dict.value"-->
<!--          />-->
<!--        </el-select>-->
<!--      </el-form-item>-->
      <!-- <el-form-item label="状态" prop="status">
        <el-input
                v-model="queryParams.status"
                placeholder="请输入状态"
                clearable
                @keyup.enter="handleQuery"
        />
      </el-form-item> -->
      <el-form-item>
        <el-button type="primary" icon="Search" @click="handleQuery">搜索</el-button>
        <el-button icon="Refresh" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
                type="primary"
                plain
                icon="Plus"
                @click="handleAdd"
                v-hasPermi="['dz:classes:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
                type="success"
                plain
                icon="Edit"
                :disabled="single"
                @click="handleUpdate"
                v-hasPermi="['dz:classes:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
                type="danger"
                plain
                icon="Delete"
                :disabled="multiple"
                @click="handleDelete"
                v-hasPermi="['dz:classes:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
                type="warning"
                plain
                icon="Download"
                @click="handleExport"
                v-hasPermi="['dz:classes:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="classesList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="ID" align="center" prop="classId" />
      <el-table-column label="班级名称" align="center" prop="name" />
<!--      <el-table-column label="学校" align="center" prop="schoolId" />-->
      <el-table-column label="学校" align="center" prop="school.name" />
      <el-table-column label="毕业年份" align="center" prop="year" />
<!--      <el-table-column label="是否线上" align="center" prop="online">-->
<!--        <template #default="scope">-->
<!--          <dict-tag :options="bool_values" :value="scope.row.online"/>-->
<!--        </template>-->
<!--      </el-table-column>-->
      <!-- <el-table-column label="状态" align="center" prop="status">
        <template #default="scope">
          <dict-tag :options="bool_values" :value="scope.row.status"/>
        </template>
      </el-table-column> -->
<!--      <el-table-column label="统计数据" align="center" prop="stats" />-->
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template #default="scope">
          <el-button link type="primary" icon="Edit" @click="handleUpdate(scope.row)" v-hasPermi="['dz:classes:edit']">修改</el-button>
          <el-button link type="primary" icon="Delete" @click="handleDelete(scope.row)" v-hasPermi="['dz:classes:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
            v-show="total>0"
            :total="total"
            v-model:page="queryParams.pageNum"
            v-model:limit="queryParams.pageSize"
            @pagination="getList"
    />

    <!-- 添加或修改学生班级对话框 -->
    <el-dialog :title="title" v-model="open" width="500px" append-to-body>
      <el-form ref="classesRef" :model="form" :rules="rules" label-width="80px">
<!--        <el-form-item label="学校" prop="schoolId">-->
<!--          <el-input v-model="form.schoolId" placeholder="请输入学校" />-->
<!--        </el-form-item>-->

        <el-form-item label="学校校区" prop="schoolId">
          <el-select
                  v-model="form.schoolId"
                  placeholder="请选择学校校区"
                  style="width: 100%"
                  :disabled="isExternalSchoolIdSet || form.classId != null"
          >
            <el-option
                    v-for="item in schoolOptions"
                    :key="item.id"
                    :label="item.name"
                    :value="item.id"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="班级名称" prop="name">
          <el-input v-model="form.name" placeholder="多个名称使用英文逗号隔开" />
        </el-form-item>
        <el-form-item label="毕业年份" prop="year">
          <el-input v-model="form.year" placeholder="请输入毕业年份" />
        </el-form-item>

<!--        <el-form-item label="是否线上" prop="online">-->
<!--          <el-select v-model="form.online" placeholder="请选择是否线上">-->
<!--            <el-option-->
<!--                    v-for="dict in bool_values"-->
<!--                    :key="dict.value"-->
<!--                    :label="dict.label"-->
<!--                    :value="parseInt(dict.value)"-->
<!--            ></el-option>-->
<!--          </el-select>-->
<!--        </el-form-item>-->
        <!-- <el-form-item label="状态" prop="status">
          <el-input v-model="form.status" placeholder="请输入状态" />
        </el-form-item> -->
      </el-form>
      <template #footer>
        <div class="dialog-footer">
          <el-button type="primary" @click="submitForm">确 定</el-button>
          <el-button @click="cancel">取 消</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script setup name="Classes">
  import { listClasses, getClasses, delClasses, addClasses, updateClasses, checkClassName } from "@/api/dz/classes"
  import {listAllSchool, listCampusSchoolList} from "@/api/dz/school"
  import { debounce } from '@/utils/index';

  // 接收外部传入的 schoolId prop
  const props = defineProps({
    externalSchoolId: {
      type: [Number, String],
      default: null
    }
  })

  const { proxy } = getCurrentInstance()
  const { bool_values } = proxy.useDict('bool_values')

  const classesList = ref([])
  const schoolOptions = ref([])
  const open = ref(false)
  const loading = ref(true)
  const showSearch = ref(true)
  const ids = ref([])
  const single = ref(true)
  const multiple = ref(true)
  const total = ref(0)
  const title = ref("")
  const classesRef = ref(null)

  const data = reactive({
    form: {},
    queryParams: {
      pageNum: 1,
      pageSize: 10,
      schoolId: null,
      year: null,
      name: null,
      online: null,
      status: null,
      stats: null,
    },
    rules: {}
  })

  // 班级名称校验函数（在 data 定义之后，可以访问 data.form）
  const validateClassName = (rule, value, callback) => {
    if (!value) {
      callback()
      return
    }
    const schoolId = data.form.schoolId
    if (!schoolId) {
      callback()
      return
    }
    const classId = data.form.classId || null
    // 如果名称包含逗号，需要校验每个名称
    const nameArray = value.split(',').map(n => n.trim()).filter(n => n)
    if (nameArray.length === 0) {
      callback()
      return
    }
    // 使用Promise.all并行校验所有名称
    const checkPromises = nameArray.map(name =>
      checkClassName(schoolId, name, classId).then(response => ({
        name,
        isUnique: response.data
      }))
    )
    Promise.all(checkPromises).then(results => {
      const duplicateNames = results.filter(r => !r.isUnique).map(r => r.name)
      if (duplicateNames.length > 0) {
        callback(new Error('班级名称【' + duplicateNames.join('、') + '】在该学校下已存在，请使用其他名称'))
      } else {
        callback()
      }
    }).catch(() => {
      callback()
    })
  }

  // 设置 rules（在 validateClassName 定义之后）
  data.rules = {
    name: [
      { required: true, message: "名称不能为空", trigger: "blur" },
      { validator: validateClassName, trigger: "blur" }
    ],
    schoolId: [
      { required: true, message: "所在校区不能为空", trigger: "blur" }
    ],
    online: [
      { required: true, message: "是否线上不能为空", trigger: "change" }
    ],
  }

  const { queryParams, form, rules } = toRefs(data)

  // 防抖校验函数
  const debouncedValidateClassName = debounce((name, schoolId, classId) => {
    if (!name || !schoolId || !classesRef.value) return
    // 如果名称包含逗号，需要校验每个名称
    const nameArray = name.split(',').map(n => n.trim()).filter(n => n)
    if (nameArray.length === 0) return
    // 使用Promise.all并行校验所有名称
    const checkPromises = nameArray.map(n =>
      checkClassName(schoolId, n, classId).then(response => ({
        name: n,
        isUnique: response.data
      }))
    )
    Promise.all(checkPromises).then(results => {
      const duplicateNames = results.filter(r => !r.isUnique).map(r => r.name)
      if (duplicateNames.length > 0) {
        // 名称不唯一，触发校验错误
        classesRef.value.validateField('name', () => {})
      } else {
        // 名称唯一，清除错误
        classesRef.value.clearValidate('name')
      }
    })
  }, 500)

  // 监听名称和学校ID变化（仅在对话框打开时校验）
  watch([() => form.value.name, () => form.value.schoolId], ([newName, newSchoolId]) => {
    if (open.value && newName && newName.trim() && newSchoolId) {
      const classId = form.value.classId || null
      debouncedValidateClassName(newName.trim(), newSchoolId, classId)
    }
  })

  // 计算属性：判断是否有外部传入的 schoolId
  const isExternalSchoolIdSet = computed(() => {
    const schoolId = props.externalSchoolId
    return schoolId !== null && schoolId !== undefined && schoolId !== ''
  })

  // 监听外部传入的 schoolId，并设置到查询参数中
  watch(() => props.externalSchoolId, (newSchoolId) => {
    if (newSchoolId !== null && newSchoolId !== undefined && newSchoolId !== '') {
      queryParams.value.schoolId = newSchoolId
      queryParams.value.pageNum = 1
      // 延迟执行查询，确保组件已完全初始化
      nextTick(() => {
        getList()
      })
    }
  }, { immediate: true })

  /** 查询学生班级列表 */
  function getList() {
    loading.value = true
    listClasses(queryParams.value).then(response => {
      classesList.value = response.rows
      total.value = response.total
      loading.value = false
    })
  }

  /** 查询校区列表 */
  function getSchoolList() {
    listCampusSchoolList().then(response => {
      schoolOptions.value = response.data || []
    })
  }

  // 取消按钮
  function cancel() {
    open.value = false
    reset()
  }

  // 表单重置
  function reset() {
    form.value = {
      classId: null,
      schoolId: null,
      year: null,
      name: null,
      online: null,
      status: null,
      stats: null,
      createTime: null,
      updateTime: null
    }
    if (classesRef.value) {
      classesRef.value.resetFields()
      classesRef.value.clearValidate()
    }
  }

  /** 搜索按钮操作 */
  function handleQuery() {
    queryParams.value.pageNum = 1
    getList()
  }

  /** 重置按钮操作 */
  function resetQuery() {
    proxy.resetForm("queryRef")
    handleQuery()
  }

  // 多选框选中数据
  function handleSelectionChange(selection) {
    ids.value = selection.map(item => item.classId)
    single.value = selection.length != 1
    multiple.value = !selection.length
  }

  /** 新增按钮操作 */
  function handleAdd() {
    reset()
    // 如果有外部传入的 schoolId，自动设置到表单中
    if (isExternalSchoolIdSet.value) {
      form.value.schoolId = props.externalSchoolId
    }
    open.value = true
    title.value = "添加学生班级"
  }

  /** 修改按钮操作 */
  function handleUpdate(row) {
    reset()
    const _classId = row.classId || ids.value
    getClasses(_classId).then(response => {
      form.value = response.data
      open.value = true
      title.value = "修改学生班级"
    })
  }

  /** 提交按钮 */
  function submitForm() {
    classesRef.value.validate(valid => {
      if (valid) {
        if (form.value.classId != null) {
          updateClasses(form.value).then(response => {
            proxy.$modal.msgSuccess("修改成功")
            open.value = false
            getList()
          })
        } else {
          addClasses(form.value).then(response => {
            proxy.$modal.msgSuccess("新增成功")
            open.value = false
            getList()
          })
        }
      }
    })
  }

  /** 删除按钮操作 */
  function handleDelete(row) {
    const _classIds = row.classId || ids.value
    proxy.$modal.confirm('是否确认删除学生班级编号为"' + _classIds + '"的数据项？').then(function() {
      return delClasses(_classIds)
    }).then(() => {
      getList()
      proxy.$modal.msgSuccess("删除成功")
    }).catch(() => {})
  }

  /** 导出按钮操作 */
  function handleExport() {
    proxy.download('dz/classes/export', {
      ...queryParams.value
    }, `classes_${new Date().getTime()}.xlsx`)
  }

  onMounted(() => {
    getSchoolList()
    getList()
  })
</script>
