<template>
  <el-form-item
    :rules="[{ required: true, validator: validateEnumList, trigger: 'change' }]"
    label="枚举项"
  >
    <div class="flex flex-col">
      <div class="flex items-center">
        <span class="flex-1"> 参数值 </span>
        <span class="flex-1"> 参数描述 </span>
      </div>
      <div
        v-for="(item, index) in dataSpecsList"
        :key="index"
        class="flex items-center justify-between mb-5px"
      >
        <el-form-item
          :prop="`property.dataSpecsList[${index}].value`"
          :rules="[
            { required: true, message: '枚举值不能为空' },
            { validator: validateEnumValue, trigger: 'blur' }
          ]"
          class="flex-1 mb-0"
        >
          <el-input v-model="item.value" placeholder="请输入枚举值,如'0'" />
        </el-form-item>
        <span class="mx-2">~</span>
        <el-form-item
          :prop="`property.dataSpecsList[${index}].name`"
          :rules="[
            { required: true, message: '枚举描述不能为空' },
            { validator: validateEnumName, trigger: 'blur' }
          ]"
          class="flex-1 mb-0"
        >
          <el-input v-model="item.name" placeholder="对该枚举项的描述" />
        </el-form-item>
        <el-button class="ml-10px" link type="primary" @click="deleteEnum(index)">删除</el-button>
      </div>
      <el-button link type="primary" @click="addEnum">+添加枚举项</el-button>
    </div>
  </el-form-item>
</template>

<script lang="ts" setup>
import { useVModel } from '@vueuse/core'
import { DataSpecsDataType, DataSpecsEnumOrBoolDataVO } from '../config'
import { isEmpty } from '@/utils/is'

/** 枚举型的 dataSpecs 配置组件 */
defineOptions({ name: 'ThingModelEnumDataSpecs' })

const props = defineProps<{ modelValue: any }>()
const emits = defineEmits(['update:modelValue'])
const dataSpecsList = useVModel(props, 'modelValue', emits) as Ref<DataSpecsEnumOrBoolDataVO[]>
const message = useMessage()

/** 添加枚举项 */
const addEnum = () => {
  dataSpecsList.value.push({
    dataType: DataSpecsDataType.ENUM,
    name: '', // 枚举项的名称
    value: undefined // 枚举值
  })
}

/** 删除枚举项 */
const deleteEnum = (index: number) => {
  if (dataSpecsList.value.length === 1) {
    message.warning('至少需要一个枚举项')
    return
  }
  dataSpecsList.value.splice(index, 1)
}

/** 校验枚举值 */
const validateEnumValue = (_: any, value: any, callback: any) => {
  if (isEmpty(value)) {
    callback(new Error('枚举值不能为空'))
    return
  }
  if (isNaN(Number(value))) {
    callback(new Error('枚举值必须是数字'))
    return
  }
  // 检查枚举值是否重复
  const values = dataSpecsList.value.map((item) => item.value)
  if (values.filter((v) => v === value).length > 1) {
    callback(new Error('枚举值不能重复'))
    return
  }
  callback()
}

/** 校验枚举描述 */
const validateEnumName = (_: any, value: string, callback: any) => {
  if (isEmpty(value)) {
    callback(new Error('枚举描述不能为空'))
    return
  }
  // 检查开头字符
  if (!/^[\u4e00-\u9fa5a-zA-Z0-9]/.test(value)) {
    callback(new Error('枚举描述必须以中文、英文字母或数字开头'))
    return
  }
  // 检查整体格式
  if (!/^[\u4e00-\u9fa5a-zA-Z0-9][a-zA-Z0-9\u4e00-\u9fa5_-]*$/.test(value)) {
    callback(new Error('枚举描述只能包含中文、英文字母、数字、下划线和短划线'))
    return
  }
  // 检查长度（一个中文算一个字符）
  if (value.length > 20) {
    callback(new Error('枚举描述长度不能超过20个字符'))
    return
  }
  callback()
}

/** 校验整个枚举列表 */
const validateEnumList = (_: any, __: any, callback: any) => {
  if (isEmpty(dataSpecsList.value)) {
    callback(new Error('请至少添加一个枚举项'))
    return
  }

  // 检查是否存在空值
  const hasEmptyValue = dataSpecsList.value.some(
    (item) => isEmpty(item.value) || isEmpty(item.name)
  )
  if (hasEmptyValue) {
    callback(new Error('存在未填写的枚举值或描述'))
    return
  }

  // 检查枚举值是否都是数字
  const hasInvalidNumber = dataSpecsList.value.some((item) => isNaN(Number(item.value)))
  if (hasInvalidNumber) {
    callback(new Error('存在非数字的枚举值'))
    return
  }

  // 检查是否有重复的枚举值
  const values = dataSpecsList.value.map((item) => item.value)
  const uniqueValues = new Set(values)
  if (values.length !== uniqueValues.size) {
    callback(new Error('存在重复的枚举值'))
    return
  }
  callback()
}
</script>

<style lang="scss" scoped>
:deep(.el-form-item) {
  .el-form-item {
    margin-bottom: 0;
  }
}
</style>
