/**
 * Created by jiachenpan on 16/11/18.
 */

export function isvalidUsername(str) {
  const valid_map = ['admin', 'editor'];
  return valid_map.indexOf(str.trim()) >= 0;
}

/* 合法uri*/
export function validateURL(textval) {
  const urlregex = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/;
  return urlregex.test(textval);
}

/* 小写字母*/
export function validateLowerCase(str) {
  const reg = /^[a-z]+$/;
  return reg.test(str);
}

/* 大写字母*/
export function validateUpperCase(str) {
  const reg = /^[A-Z]+$/;
  return reg.test(str);
}

/* 大小写字母*/
export function validateAlphabets(str) {
  const reg = /^[A-Za-z]+$/;
  return reg.test(str);
}

/**
 * validate email
 * @param email
 * @returns {boolean}
 */
export function validateEmail(email) {
  const re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
  return re.test(email);
}

/** 表单校验滚动到第一个错误项
 * @param {Object} that vue实例
 * this.scrollToError(this);
 */
export const scrollToError = (that, className = 'is-error') => {
  that.$nextTick(_ => {
    const isError = document.getElementsByClassName(className);
    isError[0].scrollIntoView({
      // 滚动到指定节点
      // 值有start,center,end，nearest，当前显示在视图区域中间
      block: 'center',
      // 值有auto、instant,smooth，缓动动画（当前是慢速的）
      behavior: 'smooth'
    });
  });
};
