require "email_homepage/version"

module EmailHomepage
  def self.get email_address
    return nil unless email_address.match /^.+@.+$/
    email_address.downcase!
    if (email_address.match /@qq.com/) || (email_address.match /@foxmail.com/)
      return "http://mail.qq.com"
    elsif email_address.match /@163.com/
      return "http://mail.163.com"
    elsif email_address.match /@vip.163.com/
      return "http://vip.163.com"
    elsif email_address.match /@126.com/
      return "http://mail.126.com"
    elsif email_address.match /@gmail.com/
      return "http://mail.google.com"
    elsif email_address.match /@sohu.com/
      return "http://mail.sohu.com"
    elsif (email_address.match /@sina.com.cn/) || (email_address.match /@sina.com/)
      return "http://mail.sina.com.cn"
    elsif email_address.match /@vip.sina.com/
      return "http://vip.sina.com"
    elsif email_address.match /@aliyun.com/
      return "https://mail.aliyun.com/"
    elsif email_address.match /@yahoo.com/
      return "http://mail.yahoo.com"
    elsif email_address.match /@tom.com/
      return "http://tom.com"
    elsif email_address.match /@yeah.net/
      return "http://yeah.net"
    elsif email_address.match /@21cn.com/
      return "http://mail.21cn.com"
    elsif (email_address.match /@hotmail.com/) || (email_address.match /@outlook.com/) || (email_address.match /@live.com/)
      return "http://outlook.office.com"
    elsif email_address.match /@sogou.com/
      return "http://mail.sogou.com"
    elsif email_address.match /@188.com/
      return "http://www.188.com"
    elsif email_address.match /@139.com/
      return "http://mail.10086.cn/"
    elsif email_address.match /@189.cn/
      return "http://webmail30.189.cn/w2/"
    elsif email_address.match /@zoho.com/
      return "https://www.zoho.com.cn/mail/"
    else
      domain_name = email_address.split(/@/).last
      host_name = `host #{domain_name} | grep mail | awk 'NR==1{print $7}'`
      if host_name.match /qq.com/
        return "http://exmail.qq.com/login"
      elsif (host_name.match /163.com/) || (host_name.match /netease.com/)
        return "http://ym.163.com/"
      elsif (host_name.match /google.com/) || (host_name.match /googlemail.com/)
        return "https://www.google.com/intl/zh-CN/mail/help/work.html"
      elsif (host_name.match /outlook.com/) || (email_address.match /@hotmail.com/) || (email_address.match /@live.com/)
        return "http://outlook.office.com"
      elsif host_name.match /aliyun.com/
        return "https://mail.aliyun.com/"
      elsif host_name.match /sina.net/
        return "http://mail.sina.net/"
      elsif host_name.match /zoho.com/
        return "https://www.zoho.com.cn/mail/"
      elsif host_name.match /sohu.net/
        return "http://mail.sohu.net/"
      elsif host_name.match /21cn.com/
        return "http://exmail.189.cn/"
      else
        return nil
      end
    end
  end
end