Feature: Twilio SMS Channel (#658)

Twilio SMS Channel
Fixes :  #350

app/services/twilio/incoming_message_service.rb

@@ -0,0 +1,77 @@
+class Twilio::IncomingMessageService
+  pattr_initialize [:params!]
+
+  def perform
+    set_contact
+    set_conversation
+    @conversation.messages.create(
+      content: params[:Body],
+      account_id: @inbox.account_id,
+      inbox_id: @inbox.id,
+      message_type: :incoming,
+      contact_id: @contact.id,
+      source_id: params[:SmsSid]
+    )
+  end
+
+  private
+
+  def twilio_inbox
+    @twilio_inbox ||= ::Channel::TwilioSms.find_by!(
+      account_sid: params[:AccountSid],
+      phone_number: params[:To]
+    )
+  end
+
+  def inbox
+    @inbox ||= twilio_inbox.inbox
+  end
+
+  def account
+    @account ||= inbox.account
+  end
+
+  def set_contact
+    contact_inbox = ::ContactBuilder.new(
+      source_id: params[:From],
+      inbox: inbox,
+      contact_attributes: contact_attributes
+    ).perform
+
+    @contact_inbox = contact_inbox
+    @contact = contact_inbox.contact
+  end
+
+  def conversation_params
+    {
+      account_id: @inbox.account_id,
+      inbox_id: @inbox.id,
+      contact_id: @contact.id,
+      contact_inbox_id: @contact_inbox.id,
+      additional_attributes: additional_attributes
+    }
+  end
+
+  def set_conversation
+    @conversation = @contact_inbox.conversations.first
+    return if @conversation
+
+    @conversation = ::Conversation.create!(conversation_params)
+  end
+
+  def contact_attributes
+    {
+      name: params[:From],
+      phone_number: params[:From],
+      contact_attributes: additional_attributes
+    }
+  end
+
+  def additional_attributes
+    {
+      from_zip_code: params[:FromZip],
+      from_country: params[:FromCountry],
+      from_state: params[:FromState]
+    }
+  end
+end

app/services/twilio/outgoing_message_service.rb

@@ -0,0 +1,34 @@
+class Twilio::OutgoingMessageService
+  pattr_initialize [:message!]
+
+  def perform
+    return if message.private
+    return if message.source_id
+    return if inbox.channel.class.to_s != 'Channel::TwilioSms'
+    return unless message.outgoing?
+
+    twilio_message = client.messages.create(
+      body: message.content,
+      from: channel.phone_number,
+      to: contact.phone_number
+    )
+    message.update!(source_id: twilio_message.sid)
+  end
+
+  private
+
+  delegate :conversation, to: :message
+  delegate :contact, to: :conversation
+
+  def inbox
+    @inbox ||= message.inbox
+  end
+
+  def channel
+    @channel ||= inbox.channel
+  end
+
+  def client
+    ::Twilio::REST::Client.new(channel.account_sid, channel.auth_token)
+  end
+end

app/services/twilio/webhook_setup_service.rb

@@ -0,0 +1,35 @@
+class Twilio::WebhookSetupService
+  include Rails.application.routes.url_helpers
+
+  pattr_initialize [:inbox!]
+
+  def perform
+    if phone_numbers.empty?
+      Rails.logger.info "TWILIO_PHONE_NUMBER_NOT_FOUND: #{channel.phone_number}"
+    else
+      twilio_client
+        .incoming_phone_numbers(phonenumber_sid)
+        .update(sms_method: 'POST', sms_url: twilio_callback_index_url)
+    end
+  rescue Twilio::REST::TwilioError => e
+    Rails.logger.info "TWILIO_FAILURE: #{e.message}"
+  end
+
+  private
+
+  def phonenumber_sid
+    phone_numbers.first.sid
+  end
+
+  def phone_numbers
+    @phone_numbers ||= twilio_client.incoming_phone_numbers.list(phone_number: channel.phone_number)
+  end
+
+  def channel
+    @channel ||= inbox.channel
+  end
+
+  def twilio_client
+    @twilio_client ||= ::Twilio::REST::Client.new(channel.account_sid, channel.auth_token)
+  end
+end