/**
 * 判断url是否是http或https
 * @param {String} url
 * @returns {Boolean}
 */
export const isHttp = (url: string): boolean => {
  return url.indexOf('http://') !== -1 || url.indexOf('https://') !== -1
}

/**
 * 判断path是否为外链
 * @param {string} path
 * @returns {Boolean}
 */
export const isExternal = (path: string): boolean => {
  return /^(https?:|mailto:|tel:)/.test(path)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export const validUsername = (str: string): boolean => {
  const valid_map = ['admin', 'editor']
  return valid_map.indexOf(str.trim()) >= 0
}

/**
 * @param {string} url
 * @returns {Boolean}
 */
export const validURL = (url: string): boolean => {
  const reg =
    /^(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 reg.test(url)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export const validLowerCase = (str: string): boolean => {
  const reg = /^[a-z]+$/
  return reg.test(str)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export const validUpperCase = (str: string): boolean => {
  const reg = /^[A-Z]+$/
  return reg.test(str)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export const validAlphabets = (str: string): boolean => {
  const reg = /^[A-Za-z]+$/
  return reg.test(str)
}

/**
 * @param {string} email
 * @returns {Boolean}
 */
export const validEmail = (email: string): boolean => {
  const reg =
    /^(([^<>()\]\\.,;:\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 reg.test(email)
}

/**
 * @param {string} str
 * @returns {Boolean}
 */
export const isString = (str: any): boolean => {
  return typeof str === 'string' || str instanceof String
}

/**
 * @param {Array} arg
 * @returns {Boolean}
 */
export const isArray = (arg: string | string[]): boolean => {
  if (typeof Array.isArray === 'undefined') {
    return Object.prototype.toString.call(arg) === '[object Array]'
  }
  return Array.isArray(arg)
}
