fix: Update the photo/video caption when an update event is received (#10804)

The update ensures proper handling of text updates in photo/video
messages by accounting for the caption attribute in addition to the text
attribute. This change enables consistent processing across both
messages.

Fixes https://github.com/chatwoot/chatwoot/issues/10760

Note: TIL, you can update the video/photo you’ve sent on Telegram, not
just the text. Currently, we’re not handling this. To support it, we
need to parse the payload and update the attachments accordingly. This
could be taken as a followup.

app/services/telegram/update_message_service.rb

@@ -28,6 +28,12 @@ class Telegram::UpdateMessageService
   end
 
   def update_message
-    @message.update!(content: params[:edited_message][:text])
+    edited_message = params[:edited_message]
+
+    if edited_message[:text].present?
+      @message.update!(content: edited_message[:text])
+    elsif edited_message[:caption].present?
+      @message.update!(content: edited_message[:caption])
+    end
   end
 end

spec/services/telegram/update_message_service_spec.rb

@@ -2,41 +2,57 @@ require 'rails_helper'
 
 describe Telegram::UpdateMessageService do
   let!(:telegram_channel) { create(:channel_telegram) }
-  let!(:update_params) do
+  let(:common_message_params) do
     {
-      'update_id': 2_323_484,
-      'edited_message': {
+      'from': {
+        'id': 123,
+        'username': 'sojan'
+      },
+      'chat': {
+        'id': 789,
+        'type': 'private'
+      },
+      'date': Time.now.to_i,
+      'edit_date': Time.now.to_i
+    }
+  end
+
+  let(:text_update_params) do
+    {
+      'update_id': 1,
+      'edited_message': common_message_params.merge(
         'message_id': 48,
-        'from': {
-          'id': 512_313_123_171_248,
-          'is_bot': false,
-          'first_name': 'Sojan',
-          'last_name': 'Jose',
-          'username': 'sojan'
-        },
-        'chat': {
-          'id': 517_123_213_211_248,
-          'first_name': 'Sojan',
-          'last_name': 'Jose',
-          'username': 'sojan',
-          'type': 'private'
-        },
-        'date': 1_680_088_034,
-        'edit_date': 1_680_088_056,
         'text': 'updated message'
-      }
+      )
+    }
+  end
+
+  let(:caption_update_params) do
+    {
+      'update_id': 2,
+      'edited_message': common_message_params.merge(
+        'message_id': 49,
+        'caption': 'updated caption'
+      )
     }
   end
 
   describe '#perform' do
     context 'when valid update message params' do
-      it 'updates the appropriate message' do
-        contact_inbox = create(:contact_inbox, inbox: telegram_channel.inbox, source_id: update_params[:edited_message][:chat][:id])
-        conversation = create(:conversation, contact_inbox: contact_inbox)
-        message = create(:message, conversation: conversation, source_id: update_params[:edited_message][:message_id])
-        described_class.new(inbox: telegram_channel.inbox, params: update_params.with_indifferent_access).perform
+      let(:contact_inbox) { create(:contact_inbox, inbox: telegram_channel.inbox, source_id: common_message_params[:chat][:id]) }
+      let(:conversation) { create(:conversation, contact_inbox: contact_inbox) }
+
+      it 'updates the message text when text is present' do
+        message = create(:message, conversation: conversation, source_id: text_update_params[:edited_message][:message_id])
+        described_class.new(inbox: telegram_channel.inbox, params: text_update_params.with_indifferent_access).perform
         expect(message.reload.content).to eq('updated message')
       end
+
+      it 'updates the message caption when caption is present' do
+        message = create(:message, conversation: conversation, source_id: caption_update_params[:edited_message][:message_id])
+        described_class.new(inbox: telegram_channel.inbox, params: caption_update_params.with_indifferent_access).perform
+        expect(message.reload.content).to eq('updated caption')
+      end
     end
 
     context 'when invalid update message params' do