feat: extending lock to single conversation to meta inbox (#9104)

This change introduces the ability to lock conversations to a single thread for Instagram and facebook messages within the Meta inbox, mirroring existing functionality in WhatsApp and SMS inboxes.

Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>

app/builders/messages/facebook/message_builder.rb

@@ -53,7 +53,23 @@ class Messages::Facebook::MessageBuilder < Messages::Messenger::MessageBuilder
   end
 
   def conversation
-    @conversation ||= Conversation.find_by(conversation_params) || build_conversation
+    @conversation ||= set_conversation_based_on_inbox_config
+  end
+
+  def set_conversation_based_on_inbox_config
+    if @inbox.lock_to_single_conversation
+      Conversation.where(conversation_params).order(created_at: :desc).first || build_conversation
+    else
+      find_or_build_for_multiple_conversations
+    end
+  end
+
+  def find_or_build_for_multiple_conversations
+    # If lock to single conversation is disabled, we will create a new conversation if previous conversation is resolved
+    last_conversation = Conversation.where(conversation_params).where.not(status: :resolved).order(created_at: :desc).first
+    return build_conversation if last_conversation.nil?
+
+    last_conversation
   end
 
   def build_conversation

app/builders/messages/instagram/message_builder.rb

@@ -69,9 +69,28 @@ class Messages::Instagram::MessageBuilder < Messages::Messenger::MessageBuilder
   end
 
   def conversation
-    @conversation ||= Conversation.where(conversation_params).find_by(
-      "additional_attributes ->> 'type' = 'instagram_direct_message'"
-    ) || build_conversation
+    @conversation ||= set_conversation_based_on_inbox_config
+  end
+
+  def instagram_direct_message_conversation
+    Conversation.where(conversation_params)
+                .where("additional_attributes ->> 'type' = 'instagram_direct_message'")
+  end
+
+  def set_conversation_based_on_inbox_config
+    if @inbox.lock_to_single_conversation
+      instagram_direct_message_conversation.order(created_at: :desc).first || build_conversation
+    else
+      find_or_build_for_multiple_conversations
+    end
+  end
+
+  def find_or_build_for_multiple_conversations
+    last_conversation = instagram_direct_message_conversation.where.not(status: :resolved).order(created_at: :desc).first
+
+    return build_conversation if last_conversation.nil?
+
+    last_conversation
   end
 
   def message_content