// Import the functions you need from the SDKs you need
import { initializeApp, getApps, getApp } from "firebase/app";
//import { getAnalytics } from "firebase/analytics";
import { getAuth } from "firebase/auth";
import { getFirestore } from "firebase/firestore";

// TODO: Add SDKs for Firebase products that you want to use
// https://firebase.google.com/docs/web/setup#available-libraries

// Expo only inlines process.env.EXPO_PUBLIC_* written out in full, so each variable is named here.
const env = {
  EXPO_PUBLIC_FIREBASE_API_KEY: process.env.EXPO_PUBLIC_FIREBASE_API_KEY,
  EXPO_PUBLIC_FIREBASE_AUTH_DOMAIN: process.env.EXPO_PUBLIC_FIREBASE_AUTH_DOMAIN,
  EXPO_PUBLIC_FIREBASE_PROJECT_ID: process.env.EXPO_PUBLIC_FIREBASE_PROJECT_ID,
  EXPO_PUBLIC_FIREBASE_STORAGE_BUCKET: process.env.EXPO_PUBLIC_FIREBASE_STORAGE_BUCKET,
  EXPO_PUBLIC_FIREBASE_MESSAGING_SENDER_ID: process.env.EXPO_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
  EXPO_PUBLIC_FIREBASE_APP_ID: process.env.EXPO_PUBLIC_FIREBASE_APP_ID,
};

const missing = Object.keys(env).filter((name) => !env[name]);
if (missing.length > 0) {
  throw new Error(
    `Missing Firebase config: ${missing.join(", ")}. Set them in client/.env (see client/.env.dist).`
  );
}

const firebaseConfig = {
  apiKey: env.EXPO_PUBLIC_FIREBASE_API_KEY,
  authDomain: env.EXPO_PUBLIC_FIREBASE_AUTH_DOMAIN,
  projectId: env.EXPO_PUBLIC_FIREBASE_PROJECT_ID,
  storageBucket: env.EXPO_PUBLIC_FIREBASE_STORAGE_BUCKET,
  messagingSenderId: env.EXPO_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
  appId: env.EXPO_PUBLIC_FIREBASE_APP_ID,
};

// Initialize Firebase
//const app = initializeApp(firebaseConfig);
//const analytics = getAnalytics(app);
const app =
    getApps().length === 0
        ? initializeApp(firebaseConfig)
        : getApp();
// Initialize Firebase Authentication and get a reference to the service
export const auth = getAuth(app);

export const db = getFirestore(app);