import { isArray, isFunction, isObject, isString, isNullOrUnDef } from '@/utils/is';
import { unref } from 'vue';
import type { Ref, ComputedRef } from 'vue';
import type { FormSchema } from '../types/form';
import { set } from 'lodash-es';

interface UseFormValuesContext {
  defaultFormModel: Ref<any>;
  getSchema: ComputedRef<FormSchema[]>;
  formModel: Recordable;
}

/**
 * @desription 变异目标对象
 */
function strShiftObject(key: string, value: any, target: Recordable) {
  const pattern = /^\{(.+)\}$/;
  if (pattern.test(key)) {
    const match = key.match(pattern);
    if (match && match[1]) {
      const keys = match[1].split(',');
      value = isObject(value) ? value : {};
      keys.forEach((k) => {
        set(target, k.trim(), value[k.trim()]);
      });
      return true;
    }
  }
}

export function useFormValues({ defaultFormModel, getSchema, formModel }: UseFormValuesContext) {
  // 加工 form values
  function handleFormValues(values: Recordable) {
    if (!isObject(values)) {
      return {};
    }
    const res: Recordable = {};
    for (const item of Object.entries(values)) {
      let [, value] = item;
      const [key] = item;
      if (
        !key ||
        (isArray(value) && value.length === 0) ||
        isFunction(value) ||
        isNullOrUnDef(value)
      ) {
        continue;
      }
      // 删除空格
      if (isString(value)) {
        value = value.trim();
      }
      if (!strShiftObject(key, value, res)) {
        set(res, key, value);
      }
    }
    return res;
  }

  //初始化默认值
  function initDefault() {
    const schemas = unref(getSchema);
    const obj: Recordable = {};
    schemas.forEach((item) => {
      const { defaultValue } = item;
      if (!isNullOrUnDef(defaultValue)) {
        obj[item.name] = defaultValue;
        formModel[item.name] = defaultValue;
      }
    });
    defaultFormModel.value = obj;
  }

  return { handleFormValues, initDefault };
}