manifold/web/lib/firebase/users.ts

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import { app } from './init'
import { getFirestore, doc, setDoc, getDoc } from 'firebase/firestore'
import { getAuth } from 'firebase/auth'
import { ref, getStorage, uploadBytes, getDownloadURL } from 'firebase/storage'
import {
onAuthStateChanged,
GoogleAuthProvider,
signInWithPopup,
} from 'firebase/auth'
export type User = {
id: string
email: string
name: string
username: string
avatarUrl: string
balanceUsd: number
createdTime: number
lastUpdatedTime: number
}
const db = getFirestore(app)
export const auth = getAuth(app)
export async function getUser(userId: string) {
const docSnap = await getDoc(doc(db, 'users', userId))
return docSnap.data() as User
}
export async function setUser(userId: string, user: User) {
await setDoc(doc(db, 'users', userId), user)
}
const CACHED_USER_KEY = 'CACHED_USER_KEY'
export function listenForLogin(onUser: (_user: User) => void) {
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// Immediately load any persisted user object from browser cache.
const cachedUser = localStorage.getItem(CACHED_USER_KEY)
if (cachedUser) {
onUser(JSON.parse(cachedUser))
}
return onAuthStateChanged(auth, async (user) => {
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if (user) {
let fetchedUser = await getUser(user.uid)
if (!fetchedUser) {
// User just created an account; save them to our database.
fetchedUser = {
id: user.uid,
name: user.displayName || 'Default Name',
username: user.displayName?.replace(/\s+/g, '') || 'DefaultUsername',
avatarUrl: user.photoURL || '',
email: user.email || 'default@blah.com',
balanceUsd: 10000,
// TODO: use Firestore timestamp?
createdTime: Date.now(),
lastUpdatedTime: Date.now(),
}
await setUser(user.uid, fetchedUser)
}
onUser(fetchedUser)
// Persist to local storage, to reduce login blink next time.
// Note: Cap on localStorage size is ~5mb
localStorage.setItem(CACHED_USER_KEY, JSON.stringify(fetchedUser))
} else {
// User logged out; reset to the empty object
onUser({} as User)
localStorage.removeItem(CACHED_USER_KEY)
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}
})
}
export async function firebaseLogin() {
const provider = new GoogleAuthProvider()
signInWithPopup(auth, provider)
}
export async function firebaseLogout() {
auth.signOut()
}
const storage = getStorage(app)
// Example: uploadData('avatars/ajfi8iejsf.png', data)
export async function uploadData(
path: string,
data: ArrayBuffer | Blob | Uint8Array
) {
const uploadRef = ref(storage, path)
// Uploaded files should be cached for 1 day, then revalidated
// See https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control
const metadata = { cacheControl: 'public, max-age=86400, must-revalidate' }
await uploadBytes(uploadRef, data, metadata)
return await getDownloadURL(uploadRef)
}