/**
 * 只处理 post 请求参数
 */
export default function processPostData<
  IRequestParams = unknown,
  IRunParams = unknown,
  IFormatParams = unknown,
>(options: {
  contentType?: string;
  method: string;
  runParams?: IRunParams;
  data?: IRequestParams;
  formatParam?: (params?: IRequestParams) => IFormatParams;
}) {
  const { contentType, method, runParams, data, formatParam } = options;

  if (method !== 'POST') return data;

  if (contentType === 'application/x-www-form-urlencoded') {
    let _runParams: string = runParams as string;
    if (typeof runParams === 'object' && runParams !== null) {
      const searchParams = new URLSearchParams();
      for (const key of Object.keys(runParams)) {
        if (runParams[key] !== null) {
          searchParams.append(key, runParams[key]);
        }
      }
      _runParams = searchParams.toString();
    }

    let _data: string = data as string;
    if (typeof data === 'object' && data !== null) {
      const searchParams = new URLSearchParams();
      for (const key of Object.keys(data as object)) {
        searchParams.append(key, data[key]);
      }
      _data = searchParams.toString();
    }

    const result = [_runParams, _data].filter(Boolean).join('&');

    if (typeof formatParam === 'function') {
      return formatParam(result as IRequestParams);
    }

    return result;
  }

  if (typeof formatParam === 'function') {
    return formatParam({ ...runParams, ...data } satisfies IRequestParams);
  }

  return { ...runParams, ...data };
}