feat: FCM HTTP v1 API changes (#9629)

Fixes https://linear.app/chatwoot/issue/CW-3210/legacy-firebase-changes

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

spec/services/notification/push_notification_service_spec.rb

@@ -4,12 +4,15 @@ describe Notification::PushNotificationService do
   let!(:account) { create(:account) }
   let!(:user) { create(:user, account: account) }
   let!(:notification) { create(:notification, user: user, account: user.accounts.first) }
-  let(:fcm_double) { double }
+  let(:fcm_double) { instance_double(FCM) }
+  let(:fcm_service_double) { instance_double(Notification::FcmService, fcm_client: fcm_double) }
 
   before do
     allow(WebPush).to receive(:payload_send).and_return(true)
-    allow(FCM).to receive(:new).and_return(fcm_double)
-    allow(fcm_double).to receive(:send).and_return({ body: { 'results': [] }.to_json })
+    allow(Notification::FcmService).to receive(:new).and_return(fcm_service_double)
+    allow(fcm_double).to receive(:send_v1).and_return({ body: { 'results': [] }.to_json })
+    allow(GlobalConfigService).to receive(:load).with('FIREBASE_PROJECT_ID', nil).and_return('test_project_id')
+    allow(GlobalConfigService).to receive(:load).with('FIREBASE_CREDENTIALS', nil).and_return('test_credentials')
   end
 
   describe '#perform' do
@@ -19,16 +22,17 @@ describe Notification::PushNotificationService do
 
         described_class.new(notification: notification).perform
         expect(WebPush).to have_received(:payload_send)
-        expect(FCM).not_to have_received(:new)
+        expect(Notification::FcmService).not_to have_received(:new)
       end
     end
 
     it 'sends a fcm notification for firebase subscription' do
-      with_modified_env FCM_SERVER_KEY: 'test', ENABLE_PUSH_RELAY_SERVER: 'false' do
+      with_modified_env ENABLE_PUSH_RELAY_SERVER: 'false' do
         create(:notification_subscription, user: notification.user, subscription_type: 'fcm')
 
         described_class.new(notification: notification).perform
-        expect(FCM).to have_received(:new)
+        expect(Notification::FcmService).to have_received(:new)
+        expect(fcm_double).to have_received(:send_v1)
         expect(WebPush).not_to have_received(:payload_send)
       end
     end