chore: Remove delete Instagram story implementation (#11097)

Currently, Instagram stories are downloaded and displayed as
attachments. We previously implemented story deletion by checking
individual messages via
https://github.com/chatwoot/chatwoot/pull/5300/files#diff-684a16c1b0b4c099fcdfeed95b1820e11fef629fe332ec7ce6a8c600331dd06dR110,
but this approach proved impractical and was removed. This PR removes
all unused code to avoid confusion. We will revisit the story deletion
feature when we implement `instagram_manage_insights`.

app/models/channel/facebook_page.rb

@@ -63,22 +63,4 @@ class Channel::FacebookPage < ApplicationRecord
     Rails.logger.debug { "Rescued: #{e.inspect}" }
     true
   end
-
-  # TODO: We will be removing this code after instagram_manage_insights is implemented
-  def fetch_instagram_story_link(message)
-    k = Koala::Facebook::API.new(page_access_token)
-    result = k.get_object(message.source_id, fields: %w[story]) || {}
-    story_link = result['story']['mention']['link']
-    # If the story is expired then it raises the ClientError and if the story is deleted with valid story-id it responses with nil
-    delete_instagram_story(message) if story_link.blank?
-    story_link
-  rescue Koala::Facebook::ClientError => e
-    Rails.logger.debug { "Instagram Story Expired: #{e.inspect}" }
-    delete_instagram_story(message)
-  end
-
-  def delete_instagram_story(message)
-    message.attachments.destroy_all
-    message.update(content: I18n.t('conversations.messages.instagram_deleted_story_content'), content_attributes: {})
-  end
 end

app/models/message.rb

@@ -155,15 +155,6 @@ class Message < ApplicationRecord
     }
   end
 
-  # TODO: We will be removing this code after instagram_manage_insights is implemented
-  # Better logic is to listen to webhook and remove stories proactively rather than trying
-  # a fetch every time a message is returned
-  def validate_instagram_story
-    inbox.channel.fetch_instagram_story_link(self)
-    # we want to reload the message in case the story has expired and data got removed
-    reload
-  end
-
   def merge_sender_attributes(data)
     data[:sender] = sender.push_event_data if sender && !sender.is_a?(AgentBot)
     data[:sender] = sender.push_event_data(inbox) if sender.is_a?(AgentBot)

spec/models/channel/facebook_page_spec.rb

@@ -30,42 +30,6 @@ RSpec.describe Channel::FacebookPage do
         channel.prompt_reauthorization!
       end
     end
-
-    context 'when fetch instagram story' do
-      let!(:account) { create(:account) }
-      let!(:instagram_channel) { create(:channel_instagram_fb_page, account: account, instagram_id: 'chatwoot-app-user-id-1') }
-      let!(:instagram_inbox) { create(:inbox, channel: instagram_channel, account: account, greeting_enabled: false) }
-      let(:fb_object) { double }
-      let(:message) { create(:message, inbox_id: instagram_inbox.id) }
-      let(:instagram_message) { create(:message, :instagram_story_mention, inbox_id: instagram_inbox.id) }
-
-      it '#fetch_instagram_story_link' do
-        allow(Koala::Facebook::API).to receive(:new).and_return(fb_object)
-        allow(fb_object).to receive(:get_object).and_return(
-          { story:
-            {
-              mention: {
-                link: 'https://www.example.com/test.jpeg',
-                id: '17920786367196703'
-              }
-            },
-            from: {
-              username: 'Sender-id-1', id: 'Sender-id-1'
-            },
-            id: 'instagram-message-id-1234' }.with_indifferent_access
-        )
-        story_link = instagram_channel.fetch_instagram_story_link(message)
-        expect(story_link).to eq('https://www.example.com/test.jpeg')
-      end
-
-      it '#delete_instagram_story' do
-        expect(instagram_message.attachments.count).to eq(1)
-
-        instagram_channel.delete_instagram_story(instagram_message)
-
-        expect(instagram_message.attachments.count).to eq(0)
-      end
-    end
   end
 
   it 'has a valid name' do