import BSL from '../../typings';
import { MINYEAR, newDate } from '../datetime';

/** 简单的判断非空 */
export function isEmpty(value: any): boolean {
  if (Array.isArray(value)) {
    return value.length === 0;
  } else if (value && typeof value === 'object' && Object.keys(value).length === 0) {
    return true;
  } else {
    return value === undefined || value === null || (typeof value === 'string' && value === '');
  }
}

/** url是否是http协议 */
export function isHttp(url: string): boolean {
  return url.indexOf('http://')  >= 0 || url.indexOf('https://') >= 0 || url.indexOf('./') >= 0 || url.indexOf('../') >= 0;
}

/** 判断是否是除了value或undefined以外的值 */
export function isValue<T>(value: T): value is NonNullable<T> {
  return value !== null && value !== undefined;
}

/** 用于强验证类型，避免断言这样的松散验证 */
export function identity<T>(value: T) {
  return value;
}

/** 获取Choice Value数据格式的值 */
export function getChocie(data: readonly { value: any; label: string }[], value: BSL.Nullable<string | number | boolean>) {
  return data.find((item) => item.value === value)?.label;
}

/** 从身份证中计算出生日期 */
export function calcBirthdayByIdentity(identity: BSL.Nullable<string>) {
  if (!identity) {
    return '';
  }
  let birthday = '';

  if (identity.length === 15) {
    birthday = "19" + identity.substring(6, 6 + 6);
  } else if(identity.length === 18){
    birthday = identity.substring(6, 6 + 8);
  } else {
    return "";
  }
  return birthday.replace(/(.{4})(.{2})/,"$1-$2-");
}
/** 从出生日期中计算出年龄 */
export function calcAgeByBirthday(birthday: BSL.Nullable<string>) {
  if (birthday) {
    return Math.floor((Date.now() - newDate(birthday).getTime()) / MINYEAR);
  }
  return '';
}
/** 从身份证中计算出年龄 */
export function calcAgeByIdentity(identity: BSL.Nullable<string>) {
  const birthday = calcBirthdayByIdentity(identity);
  if (birthday) {
    return Math.floor((Date.now() - newDate(birthday).getTime()) / MINYEAR);
  }
  return '';
}