Ruby SMS implementation for gatewayapi.com

sms.rb

class Sms
  URL = 'https://gatewayapi.com/rest/mtsms'

  def self.send(number, text)
    if Rails.env.production? || Rails.env.staging? #TODO: feature flags
      send_sms(number, text)
    else
      write_to_file(number, text) # sms text will be available at your.domain/public/pwd.txt
    end
  end

  def self.write_to_file(number, text)
    file = File.new(Rails.public_path + 'pwd.txt', 'w')
    file.syswrite(text)
    file.close
  end

  def self.send_sms(number, text)
    begin
      headers = {'Authorization' => auth_header, 'Content-Type' => 'application/json', 'Accept' => 'application/json' }
      body = {
        sender: 'SMSInfo',
        message: text,
        recipients: [
        {
            msisdn: number.to_i
        },
      ]}

      Rails.logger.debug body
      Rails.logger.debug headers
      response = HTTParty.post URL, body: body.to_json, headers: headers
      Rails.logger.debug response.inspect
    rescue StandardError => ex
      Rails.logger.error ex.message
    end
  end

  private

  # set up with: export GATEWAY_AUTH=xxxx
  def self.auth_header
    "Basic #{Base64.strict_encode64("#{ENV['GATEWAY_AUTH']}:")}"
  end
end

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