Restructure omni services and add Chatwoot research snapshot

research/chatwoot/spec/services/notification/fcm_service_spec.rb

@@ -0,0 +1,70 @@
+require 'rails_helper'
+
+describe Notification::FcmService do
+  let(:project_id) { 'test_project_id' }
+  let(:credentials) { '{ "type": "service_account", "project_id": "test_project_id" }' }
+  let(:fcm_service) { described_class.new(project_id, credentials) }
+  let(:fcm_double) { instance_double(FCM) }
+  let(:token_info) { { token: 'test_token', expires_at: 1.hour.from_now } }
+  let(:creds_double) do
+    instance_double(Google::Auth::ServiceAccountCredentials, fetch_access_token!: { 'access_token' => 'test_token', 'expires_in' => 3600 })
+  end
+
+  before do
+    allow(FCM).to receive(:new).and_return(fcm_double)
+    allow(fcm_service).to receive(:generate_token).and_return(token_info)
+    allow(Google::Auth::ServiceAccountCredentials).to receive(:make_creds).and_return(creds_double)
+  end
+
+  describe '#fcm_client' do
+    it 'returns an FCM client' do
+      expect(fcm_service.fcm_client).to eq(fcm_double)
+      expect(FCM).to have_received(:new).with('test_token', anything, project_id)
+    end
+
+    it 'generates a new token if expired' do
+      allow(fcm_service).to receive(:generate_token).and_return(token_info)
+      allow(fcm_service).to receive(:token_expired?).and_return(true)
+
+      expect(fcm_service.fcm_client).to eq(fcm_double)
+      expect(FCM).to have_received(:new).with('test_token', anything, project_id)
+      expect(fcm_service).to have_received(:generate_token)
+    end
+  end
+
+  describe 'private methods' do
+    describe '#current_token' do
+      it 'returns the current token if not expired' do
+        fcm_service.instance_variable_set(:@token_info, token_info)
+        expect(fcm_service.send(:current_token)).to eq('test_token')
+      end
+
+      it 'generates a new token if expired' do
+        expired_token_info = { token: 'expired_token', expires_at: 1.hour.ago }
+        fcm_service.instance_variable_set(:@token_info, expired_token_info)
+        allow(fcm_service).to receive(:generate_token).and_return(token_info)
+
+        expect(fcm_service.send(:current_token)).to eq('test_token')
+        expect(fcm_service).to have_received(:generate_token)
+      end
+    end
+
+    describe '#generate_token' do
+      it 'generates a new token' do
+        allow(Google::Auth::ServiceAccountCredentials).to receive(:make_creds).and_return(creds_double)
+
+        token = fcm_service.send(:generate_token)
+        expect(token[:token]).to eq('test_token')
+        expect(token[:expires_at]).to be_within(1.second).of(Time.zone.now + 3600)
+      end
+    end
+
+    describe '#credentials_path' do
+      it 'creates a StringIO with credentials' do
+        string_io = fcm_service.send(:credentials_path)
+        expect(string_io).to be_a(StringIO)
+        expect(string_io.read).to eq(credentials)
+      end
+    end
+  end
+end