// Firebase configuration and initialization
import { initializeApp, getApps, FirebaseApp } from "firebase/app";
import { getAuth, Auth, GoogleAuthProvider } from "firebase/auth";
import { getAnalytics, Analytics } from "firebase/analytics";

// Firebase configuration
const firebaseConfig = {
  apiKey: process.env.NEXT_PUBLIC_FIREBASE_API_KEY || "AIzaSyCPxvawp-ECyMhNY3pdTFpUgxTJLNKPdik",
  authDomain: process.env.NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN || "ecommers-bc88b.firebaseapp.com",
  projectId: process.env.NEXT_PUBLIC_FIREBASE_PROJECT_ID || "ecommers-bc88b",
  storageBucket: process.env.NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET || "ecommers-bc88b.firebasestorage.app",
  messagingSenderId: process.env.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID || "756378354795",
  appId: process.env.NEXT_PUBLIC_FIREBASE_APP_ID || "1:756378354795:web:329f005340bd3a85a0dd2e",
  measurementId: process.env.NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID || "G-C5DWXQTRXF",
};

// Initialize Firebase
let app: FirebaseApp | undefined;
let auth: Auth | undefined;
let analytics: Analytics | null = null;

if (typeof window !== "undefined") {
  // Only initialize on client side
  if (!getApps().length) {
    app = initializeApp(firebaseConfig);
  } else {
    app = getApps()[0];
  }
  
  auth = getAuth(app);
  
  // Initialize Analytics only in browser
  if (process.env.NODE_ENV === "production") {
    try {
      analytics = getAnalytics(app);
    } catch (error) {
      console.warn("Firebase Analytics initialization failed:", error);
    }
  }
}

// Google Auth Provider
export const googleProvider = new GoogleAuthProvider();
googleProvider.setCustomParameters({
  prompt: "select_account",
});

export { app, auth, analytics };
export default app;