feat: Handle instagram test service (#11244)

This PR will handle the Instagram test events. We are using the last
created Instagram channel as the test channel since we don't have any
other channels for testing purposes at the time of Meta approval.



https://github.com/user-attachments/assets/98302b7a-d72c-4950-9660-861a5e08d55f

---------

Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>

app/services/instagram/test_event_service.rb

@@ -0,0 +1,79 @@
+class Instagram::TestEventService
+  def initialize(messaging)
+    @messaging = messaging
+  end
+
+  def perform
+    Rails.logger.info("Processing Instagram test webhook event, #{@messaging}")
+
+    return false unless test_webhook_event?
+
+    create_test_text
+  end
+
+  private
+
+  def test_webhook_event?
+    @messaging[:sender][:id] == '12334' && @messaging[:recipient][:id] == '23245'
+  end
+
+  def create_test_text
+    # As of now, we are using the last created instagram channel as the test channel,
+    # since we don't have any other channel for testing purpose at the time of meta approval
+    channel = Channel::Instagram.last
+
+    @inbox = ::Inbox.find_by(channel: channel)
+    return unless @inbox
+
+    @contact = create_test_contact
+
+    @conversation ||= create_test_conversation(conversation_params)
+
+    @message = @conversation.messages.create!(test_message_params)
+  end
+
+  def create_test_contact
+    @contact_inbox = @inbox.contact_inboxes.where(source_id: @messaging[:sender][:id]).first
+    unless @contact_inbox
+      @contact_inbox ||= @inbox.channel.create_contact_inbox(
+        'sender_username', 'sender_username'
+      )
+    end
+
+    @contact_inbox.contact
+  end
+
+  def create_test_conversation(conversation_params)
+    Conversation.find_by(conversation_params) || build_conversation(conversation_params)
+  end
+
+  def test_message_params
+    {
+      account_id: @conversation.account_id,
+      inbox_id: @conversation.inbox_id,
+      message_type: 'incoming',
+      source_id: @messaging[:message][:mid],
+      content: @messaging[:message][:text],
+      sender: @contact
+    }
+  end
+
+  def build_conversation(conversation_params)
+    Conversation.create!(
+      conversation_params.merge(
+        contact_inbox_id: @contact_inbox.id
+      )
+    )
+  end
+
+  def conversation_params
+    {
+      account_id: @inbox.account_id,
+      inbox_id: @inbox.id,
+      contact_id: @contact.id,
+      additional_attributes: {
+        type: 'instagram_direct_message'
+      }
+    }
+  end
+end