(cache)fkit-course/src/lib/firebase.ts at main · fireship-io/fkit-course · GitHub

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import { initializeApp } from "firebase/app";
import { doc, getFirestore, onSnapshot } from "firebase/firestore";
import { getAuth, onAuthStateChanged, type User } from "firebase/auth";
import { getStorage } from "firebase/storage";
import { writable, type Readable, derived } from "svelte/store";

const firebaseConfig = {

};

// Initialize Firebase
export const app = initializeApp(firebaseConfig);
export const db = getFirestore();
export const auth = getAuth();
export const storage = getStorage();


/**
* @returns a store with the current firebase user
*/
function userStore() {
let unsubscribe: () => void;

if (!auth || !globalThis.window) {
console.warn('Auth is not initialized or not in browser');
const { subscribe } = writable<User | null>(null);
return {
subscribe,
}
}

const { subscribe } = writable(auth?.currentUser ?? null, (set) => {
unsubscribe = onAuthStateChanged(auth, (user) => {
set(user);
});

return () => unsubscribe();
});

return {
subscribe,
};
}

export const user = userStore();


/**
* @param {string} path document path or reference
* @param {any} startWith optional default data
* @returns a store with realtime updates on document data
*/
export function docStore<T>(
path: string,
) {
let unsubscribe: () => void;

const docRef = doc(db, path);

const { subscribe } = writable<T | null>(null, (set) => {
unsubscribe = onSnapshot(docRef, (snapshot) => {
set((snapshot.data() as T) ?? null);
});

return () => unsubscribe();
});

return {
subscribe,
ref: docRef,
id: docRef.id,
};
}

interface UserData {
username: string;
bio: string;
photoURL: string;
published: boolean;
links: any[];
}

export const userData: Readable<UserData | null> = derived(user, ($user, set) => {
if ($user) {
return docStore<UserData>(`users/${$user.uid}`).subscribe(set);
} else {
set(null);
}
});