feat: support reply to for outgoing message in WhatsApp (#8107)

- This PR enables replies to WhatsApp.

app/services/messages/in_reply_to_message_builder.rb

@@ -0,0 +1,24 @@
+class Messages::InReplyToMessageBuilder
+  pattr_initialize [:message!, :in_reply_to!, :in_reply_to_external_id!]
+
+  delegate :conversation, to: :message
+
+  def perform
+    set_in_reply_to_attribute if @in_reply_to.present? || @in_reply_to_external_id.present?
+  end
+
+  private
+
+  def set_in_reply_to_attribute
+    @message.content_attributes[:in_reply_to_external_id] = in_reply_to_message.try(:source_id)
+    @message.content_attributes[:in_reply_to] = in_reply_to_message.try(:id)
+  end
+
+  def in_reply_to_message
+    return conversation.messages.find_by(id: @in_reply_to) if @in_reply_to.present?
+
+    return conversation.messages.find_by(source_id: @in_reply_to_external_id) if @in_reply_to_external_id
+
+    nil
+  end
+end

app/services/whatsapp/incoming_message_base_service.rb

@@ -144,8 +144,7 @@ class Whatsapp::IncomingMessageBaseService
       message_type: :incoming,
       sender: @contact,
       source_id: message[:id].to_s,
-      in_reply_to_external_id: @in_reply_to_external_id,
-      in_reply_to: @in_reply_to
+      in_reply_to_external_id: @in_reply_to_external_id
     )
   end
 

app/services/whatsapp/incoming_message_service_helpers.rb

@@ -88,15 +88,7 @@ module Whatsapp::IncomingMessageServiceHelpers
   end
 
   def process_in_reply_to(message)
-    return if message['context'].blank?
-
-    @in_reply_to_external_id = message['context']['id']
-
-    return if @in_reply_to_external_id.blank?
-
-    in_reply_to_message = Message.find_by(source_id: @in_reply_to_external_id)
-
-    @in_reply_to = in_reply_to_message.id if in_reply_to_message.present?
+    @in_reply_to_external_id = message['context']&.[]('id')
   end
 
   def find_message_by_source_id(source_id)

app/services/whatsapp/providers/whatsapp_cloud_service.rb

@@ -78,6 +78,7 @@ class Whatsapp::Providers::WhatsappCloudService < Whatsapp::Providers::BaseServi
       headers: api_headers,
       body: {
         messaging_product: 'whatsapp',
+        context: whatsapp_reply_context(message),
         to: phone_number,
         text: { body: message.content },
         type: 'text'
@@ -100,6 +101,7 @@ class Whatsapp::Providers::WhatsappCloudService < Whatsapp::Providers::BaseServi
       headers: api_headers,
       body: {
         :messaging_product => 'whatsapp',
+        :context => whatsapp_reply_context(message),
         'to' => phone_number,
         'type' => type,
         type.to_s => type_content
@@ -132,6 +134,15 @@ class Whatsapp::Providers::WhatsappCloudService < Whatsapp::Providers::BaseServi
     }
   end
 
+  def whatsapp_reply_context(message)
+    reply_to = message.content_attributes[:in_reply_to_external_id]
+    return nil if reply_to.blank?
+
+    {
+      message_id: reply_to
+    }
+  end
+
   def send_interactive_text_message(phone_number, message)
     payload = create_payload_based_on_items(message)