<template>
  <a-checkbox-group v-bind="attrs" v-model:value="checkboxArray" :options="checkOptions" @change="handleChange"></a-checkbox-group>
</template>

<script lang="ts">
  import { defineComponent, computed, watch, watchEffect, ref, unref } from 'vue';
  import { propTypes } from '@/utils/propTypes';
  import { useAttrs } from '@/hooks/vben/useAttrs';
  import { initDictOptions } from '@/utils/dict/index';

  export default defineComponent({
    name: 'Checkbox',
    props: {
      value: propTypes.oneOfType([propTypes.string, propTypes.number]),
      dictCode: propTypes.string,
      options: {
        type: Array,
        default: () => [],
      },
    },
    emits: ['change', 'update:value'],
    setup(props, { emit }) {
      const attrs = useAttrs();
      //checkbox选项
      const checkOptions = ref<any[]>([]);
      //checkbox数值
      const checkboxArray = ref<any[]>([]);
      /**
       * 监听value
       */
      watchEffect(() => {
        let temp = props.value;
        if (!temp && temp!==0) {
          checkboxArray.value = []
        } else {
          temp = temp + "";
          checkboxArray.value = temp.split(",");
        }
        props.value && (checkboxArray.value = props.value ? props.value.split(',') : []);
        if (props.value === '' || props.value === undefined) {
          checkboxArray.value = [];
        }
      });
      /**
       * 监听字典code
       */
      watchEffect(() => {
        props && initOptions();
      });

      /**
       * 初始化选项
       */
      async function initOptions() {
        //根据options, 初始化选项
        if (props.options && props.options.length > 0) {
          checkOptions.value = props.options;
          return;
        }
        //根据字典Code, 初始化选项
        if (props.dictCode) {
          const dictData = await initDictOptions(props.dictCode);
          checkOptions.value = dictData.reduce((prev, next) => {
            if (next) {
              const value = next['value'];
              prev.push({
                label: next['text'],
                value: value,
              });
            }
            return prev;
          }, []);
        }
      }

      /**
       * change事件
       * @param $event
       */
      function handleChange($event) {
        emit('update:value', $event.join(','));
        emit('change', $event.join(','));
      }

      return { checkboxArray, checkOptions, attrs, handleChange };
    },
  });
</script>
