Feature: Twilio SMS Channel (#658)

Twilio SMS Channel
Fixes :  #350

app/models/account.rb

@@ -23,9 +23,10 @@ class Account < ApplicationRecord
   has_many :messages, dependent: :destroy
   has_many :contacts, dependent: :destroy
   has_many :facebook_pages, dependent: :destroy, class_name: '::Channel::FacebookPage'
+  has_many :telegram_bots, dependent: :destroy
+  has_many :twilio_sms, dependent: :destroy, class_name: '::Channel::TwilioSms'
   has_many :twitter_profiles, dependent: :destroy, class_name: '::Channel::TwitterProfile'
   has_many :web_widgets, dependent: :destroy, class_name: '::Channel::WebWidget'
-  has_many :telegram_bots, dependent: :destroy
   has_many :canned_responses, dependent: :destroy
   has_many :webhooks, dependent: :destroy
   has_one :subscription, dependent: :destroy

app/models/channel/twilio_sms.rb

@@ -0,0 +1,33 @@
+# == Schema Information
+#
+# Table name: channel_twilio_sms
+#
+#  id           :bigint           not null, primary key
+#  account_sid  :string           not null
+#  auth_token   :string           not null
+#  phone_number :string           not null
+#  created_at   :datetime         not null
+#  updated_at   :datetime         not null
+#  account_id   :integer          not null
+#
+# Indexes
+#
+#  index_channel_twilio_sms_on_account_id_and_phone_number  (account_id,phone_number) UNIQUE
+#
+
+class Channel::TwilioSms < ApplicationRecord
+  self.table_name = 'channel_twilio_sms'
+
+  validates :account_id, presence: true
+  validates :account_sid, presence: true
+  validates :auth_token, presence: true
+  validates :phone_number, uniqueness: { scope: :account_id }, presence: true
+
+  belongs_to :account
+
+  has_one :inbox, as: :channel, dependent: :destroy
+
+  def name
+    'Twilio SMS'
+  end
+end

app/models/channel/twitter_profile.rb

@@ -11,6 +11,10 @@
 #  account_id                  :integer          not null
 #  profile_id                  :string           not null
 #
+# Indexes
+#
+#  index_channel_twitter_profiles_on_account_id_and_profile_id  (account_id,profile_id) UNIQUE
+#
 
 class Channel::TwitterProfile < ApplicationRecord
   self.table_name = 'channel_twitter_profiles'

app/models/message.rb

@@ -113,6 +113,8 @@ class Message < ApplicationRecord
       ::Facebook::SendReplyService.new(message: self).perform
     elsif channel_name == 'Channel::TwitterProfile'
       ::Twitter::SendReplyService.new(message: self).perform
+    elsif channel_name == 'Channel::TwilioSms'
+      ::Twilio::OutgoingMessageService.new(message: self).perform
     end
   end
 

app/models/webhook.rb

@@ -10,6 +10,10 @@
 #  account_id   :integer
 #  inbox_id     :integer
 #
+# Indexes
+#
+#  index_webhooks_on_account_id_and_url  (account_id,url) UNIQUE
+#
 
 class Webhook < ApplicationRecord
   belongs_to :account