feat: Add support for Instagram delivery reports (#8125)

spec/services/instagram/read_status_service_spec.rb

@@ -0,0 +1,48 @@
+require 'rails_helper'
+
+describe Instagram::ReadStatusService do
+  before do
+    create(:message, message_type: :incoming, inbox: instagram_inbox, account: account, conversation: conversation,
+                     source_id: 'chatwoot-app-user-id-1')
+  end
+
+  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!(:contact) { create(:contact, account: account) }
+  let(:contact_inbox) { create(:contact_inbox, contact: contact, inbox: instagram_inbox) }
+  let(:conversation) { create(:conversation, contact: contact, inbox: instagram_inbox, contact_inbox: contact_inbox) }
+
+  describe '#perform' do
+    context 'when messaging_seen callback is fired' do
+      let(:message) { conversation.messages.last }
+
+      it 'updates the message status to read if the status is delivered' do
+        params = {
+          recipient: {
+            id: 'chatwoot-app-user-id-1'
+          },
+          read: {
+            mid: message.source_id
+          }
+        }
+        described_class.new(params: params).perform
+        expect(conversation.reload.messages.last.status).to eq('read')
+      end
+
+      it 'does not update the status if message is not found' do
+        params = {
+          recipient: {
+            id: 'chatwoot-app-user-id-1'
+          },
+          read: {
+            mid: 'random-message-id'
+          }
+        }
+
+        described_class.new(params: params).perform
+        expect(conversation.reload.messages.last.status).not_to eq('read')
+      end
+    end
+  end
+end