sms with aliyun class

# encoding: utf-8
#
# - [HTTP协议及签名](https://help.aliyun.com/document_detail/56189.html)
# - [OpenSSL::HMAC](https://ruby-doc.org/stdlib-2.1.0/libdoc/openssl/rdoc/OpenSSL/HMAC.html)
#
require 'uri'
require 'cgi'
require 'base64'
require 'openssl'
require 'httparty'
require 'securerandom'

module SMS
  class Aliyun
    class << self
      def send(options = {})
        system_params = {
          AccessKeyId: options[:access_id],
          Timestamp: Time.now.getgm.strftime("%Y-%m-%dT%H:%M:%SZ"),
          Format: 'JSON',
          SignatureMethod: 'HMAC-SHA1',
          SignatureVersion: '1.0',
          SignatureNonce: SecureRandom.uuid
        }
        bussiness_params = {
          Action: 'SendSms',
          Version: '2017-05-25',
          RegionId: 'cn-hangzhou',
          PhoneNumbers: options[:receivers],
          SignName: options[:signature],
          TemplateCode: options[:template_code],
          TemplateParam: options[:template_param] || ''
        }

        params         = system_params.merge(bussiness_params)
        params_string  = params.sort.to_h.each_with_object([]) { |(k, v), arr| arr.push([pop_escape(k), pop_escape(v)].join("=")) }.join("&")
        sign_string    = "GET&#{pop_escape('/')}&#{pop_escape(params_string)}"

        digest = ::OpenSSL::Digest.new('sha1')
        hmac   = ::OpenSSL::HMAC.digest(digest, options[:access_token] + "&", sign_string)
        sign   = ::Base64.encode64(hmac)
        sign   = pop_escape(sign)
        url    = "http://dysmsapi.aliyuncs.com/?Signature=#{sign}&#{params_string}"

        response = ::HTTParty.get(url)
        {receivers: options[:receivers], send_state: response.body}
      rescue => e
        {receivers: options[:receivers], send_state: format('Error#SMS.send: %s', e.message)}
      end

      def pop_escape(str)
        ::CGI::escape(str.to_s.strip).gsub("+", "%20").gsub("*", "%2A").gsub("%7E", "~")
      end
    end
  end
end

options = {
  access_id: 'access_id',
  access_token: 'access_token',
  receivers: '13564379606',
  signature: '生意人',
  template_code: 'SMS_95610390',
  template_param: "{\"code\":\"666666\"}"
}
puts SMS::Aliyun.send(options)