export function firstCharToLowerCase(obj: any) {
  return Object.entries(obj).reduce(
    (o: { [key: string]: any }, [key, value]) => {
      o[`${key[0].toLocaleLowerCase()}${key.slice(1)}`] = value;
      return o;
    },
    {},
  );
}

export function firstCharToUpperCase(obj) {
  return Object.entries(obj).reduce(
    (o: { [key: string]: any }, [key, value]) => {
      o[`${key[0].toLocaleUpperCase()}${key.slice(1)}`] = value;
      return o;
    },
    {},
  );
}

export const isReqSuccess = (res: any) => res.code === 0 || res.Code === 0;

class RequestHandler {
  constructor(public response: API.ResponseData<any>) {
    this.response = response;
  }
  success(f: () => void) {
    const res = this.response;
    if (!res.success) {
      return this;
    }
    if (!isReqSuccess(res)) {
      return this;
    }
    f();
    return this;
  }
  error(f: () => void) {
    const res = this.response;
    if (!res.success) {
      return this;
    }
    if (isReqSuccess(res)) {
      return this;
    }
    f();
    return this;
  }
  httpError(f: () => void) {
    const res = this.response;
    if (res.success) {
      return this;
    }
    f();
    return this;
  }
}

export const handleRequest = (res: API.ResponseData<any>) =>
  new RequestHandler(res);

export function errorReponse(
  message: string,
  code = 'err',
): API.ResponseData<null> {
  return {
    code,
    data: null,
    success: true,
    requestIsSuccess: false,
    message,
  };
}

export const isValidPhone = (phone: string) =>
  new RegExp(/^1\d{10}$/).test(phone);
export const passwordReg = /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)[\S]{8,16}$/;
export const isValidPassword = (maybePassword: string) =>
  new RegExp(passwordReg).test(maybePassword);