fix: Stop overwritting contact avatars unneccesarily (#8710)

While debugging a sentry error for "ActiveRecord::InvalidForeignKey ActiveStorage::Representations::RedirectController", it was noticed that we enqueue a Avatar::AvatarFromUrlJob for each setUser call, which is unnecessary. Hence making this call only if the contact doesn't have an existing avatar.

If one needs to have this avatar updated, they can go to the contacts tab and delete the current avatar, Chatwoot will pick up the new avatar in subsequent API call.

app/actions/contact_identify_action.rb

@@ -104,7 +104,7 @@ def update_contact
     # TODO: replace reject { |_k, v| v.blank? } with compact_blank when rails is upgraded
     @contact.discard_invalid_attrs if discard_invalid_attrs
     @contact.save!
-    Avatar::AvatarFromUrlJob.perform_later(@contact, params[:avatar_url]) if params[:avatar_url].present?
+    Avatar::AvatarFromUrlJob.perform_later(@contact, params[:avatar_url]) if params[:avatar_url].present? && !@contact.avatar.attached?
   end
 
   def merge_contact(base_contact, merge_contact)

spec/actions/contact_identify_action_spec.rb

@@ -22,6 +22,12 @@
       expect(contact.reload.identifier).to eq 'test_id'
     end
 
+    it 'will not call avatar job if avatar is already attached' do
+      contact.avatar.attach(io: Rails.root.join('spec/assets/avatar.png').open, filename: 'avatar.png', content_type: 'image/png')
+      expect(Avatar::AvatarFromUrlJob).not_to receive(:perform_later).with(contact, params[:avatar_url])
+      contact_identify
+    end
+
     it 'merge deeply nested additional attributes' do
       create(:contact, account: account, identifier: '', email: 'test@test.com',
                        additional_attributes: { location: 'Bengaulru', company_name: 'Meta', social_profiles: { linkedin: 'saras' } })