sending_messages.rb

require 'uri'
require 'net/https'
require 'json'

API_URL = "https://sl.carouselsms.com/api"
API_KEY = "[API KEY GOES HERE]"

# Simple ServiceLayer gateway class
class ServiceLayer
  class Error < StandardError; end

  def self.api_call(command, data = nil)
    data = (data || {}).merge(:api_key => API_KEY)
    res = Net::HTTP.post_form(URI.parse(API_URL + "/" + command.to_s), data)

    # Raise an error
    raise ServiceLayer::Error.new(res.body) if res.code == 500

    parse_response res.body
  end
  
  def self.parse_response(body)
    return JSON.parse(body)
  rescue => e
    return body
  end
end

# Sending a message
message_ids = ServiceLayer.api_call(:send_message,
  :phone_number => '[PHONE NUMBER GOES HERE]',
  :body         => 'Hey',
  :tag          => 'tag1')

puts message_ids.inspect # => { "message_ids": "685320" }


# Sending multiple messages
message_ids = ServiceLayer.api_call(:send_messages,
  :template     => 'Hello {{name}}. You have {{credits}} credits left.',
  :recipients   => {
    '555555555555' => { :name => 'Aleks', :credits => '100' },
    '5555555555'   => { :name => 'John',  :credits => '0' }
  }.to_json,
  :tag => 'tag2')

puts message_ids.inspect # => { "message_ids" => "685322,685323" }