refactor: #386 프로덕션 환경의 FCM 설정과 로컬 환경의 FCM 분리 (#393)

* refactor: production 환경에서의 FCM Configuration 클래스 네이밍 변경 및 profile 설정 추가

* refactor: local 환경에서의 FCM Configuration 클래스 추가

backend/ddang/src/main/java/com/ddang/ddang/configuration/fcm/LocalFcmConfiguration.java

@@ -0,0 +1,40 @@
+package com.ddang.ddang.configuration.fcm;
+
+import com.google.firebase.FirebaseApp;
+import com.google.firebase.FirebaseOptions;
+import com.google.firebase.messaging.FirebaseMessaging;
+import java.util.List;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+
+@Configuration
+@Profile("local")
+public class LocalFcmConfiguration {
+
+    @Bean
+    public FirebaseMessaging firebaseMessaging() {
+        final FirebaseApp firebaseApps = findFirebaseApps();
+
+        return FirebaseMessaging.getInstance(firebaseApps);
+    }
+
+    private FirebaseApp findFirebaseApps() {
+        final List<FirebaseApp> apps = FirebaseApp.getApps();
+
+        if (!apps.isEmpty()) {
+            for (final FirebaseApp app : apps) {
+                if (FirebaseApp.DEFAULT_APP_NAME.equals(app.getName())) {
+                    return app;
+                }
+            }
+        }
+
+        final FirebaseOptions options = FirebaseOptions.builder()
+                                                       .setCredentials(new MockGoogleCredentials("test-token"))
+                                                       .setProjectId("test-project")
+                                                       .build();
+
+        return FirebaseApp.initializeApp(options);
+    }
+}

backend/ddang/src/main/java/com/ddang/ddang/configuration/fcm/FcmConfiguration.java → backend/ddang/src/main/java/com/ddang/ddang/configuration/fcm/ProdFcmConfiguration.java

@@ -16,8 +16,8 @@
 import org.springframework.context.annotation.Profile;
 
 @Configuration
-@Profile("!test")
-public class FcmConfiguration {
+@Profile("!test && !local")
+public class ProdFcmConfiguration {
 
     @Value("${fcm.key.path}")
     private String FCM_PRIVATE_KEY_PATH;