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| 1 | +import { StorageKey } from 'constants/storage' |
| 2 | +import { EventEmitter } from 'events' |
| 3 | + |
| 4 | +type Firebase = typeof import('firebase/app') |
| 5 | + |
| 6 | +export const enum MetastreamUserTier { |
| 7 | + None = 0, |
| 8 | + Starter = 1, |
| 9 | + Supporter = 2 |
| 10 | +} |
| 11 | + |
| 12 | +interface UserDocument { |
| 13 | + tier: MetastreamUserTier |
| 14 | +} |
| 15 | + |
| 16 | +let instance: AccountService |
| 17 | + |
| 18 | +export class AccountService extends EventEmitter { |
| 19 | + static get() { |
| 20 | + return instance || (instance = new AccountService()) |
| 21 | + } |
| 22 | + |
| 23 | + private _firebase?: Firebase |
| 24 | + private get firebase() { |
| 25 | + if (!this._firebase) { |
| 26 | + throw new Error('Firebase is not initialized') |
| 27 | + } |
| 28 | + return this._firebase |
| 29 | + } |
| 30 | + |
| 31 | + private _userData?: UserDocument |
| 32 | + |
| 33 | + get tier() { |
| 34 | + return (this._userData && this._userData.tier) || MetastreamUserTier.None |
| 35 | + } |
| 36 | + |
| 37 | + private async initFirebase() { |
| 38 | + if (!process.env.FIREBASE_CONFIG) { |
| 39 | + throw new Error('Firebase not configured') |
| 40 | + } |
| 41 | + |
| 42 | + const firebase = await import(/* webpackChunkName: "firebase-app" */ 'firebase/app') |
| 43 | + await Promise.all([ |
| 44 | + import(/* webpackChunkName: "firebase-auth" */ 'firebase/auth'), |
| 45 | + import(/* webpackChunkName: "firebase-firestore" */ 'firebase/firestore') |
| 46 | + ]) |
| 47 | + |
| 48 | + if (!this._firebase) { |
| 49 | + const firebaseConfig = JSON.parse(process.env.FIREBASE_CONFIG) |
| 50 | + firebase.initializeApp(firebaseConfig) |
| 51 | + this._firebase = firebase |
| 52 | + } |
| 53 | + |
| 54 | + if (process.env.NODE_ENV === 'development') { |
| 55 | + ;(window as any).app.firebase = firebase |
| 56 | + } |
| 57 | + |
| 58 | + return firebase |
| 59 | + } |
| 60 | + |
| 61 | + private async fetchUserDocument() { |
| 62 | + const userRecord = this.firebase.auth().currentUser! |
| 63 | + const userDocRef = await this.firebase |
| 64 | + .firestore() |
| 65 | + .collection('users') |
| 66 | + .doc(userRecord.uid) |
| 67 | + .get() |
| 68 | + const userData = userDocRef.data() as UserDocument |
| 69 | + this._userData = userData |
| 70 | + this.emit('change') |
| 71 | + return userData |
| 72 | + } |
| 73 | + |
| 74 | + async checkLogin() { |
| 75 | + const didLogin = Boolean(localStorage.getItem(StorageKey.Login)) |
| 76 | + if (didLogin) { |
| 77 | + const firebase = await this.initFirebase() // init |
| 78 | + const user = await new Promise(resolve => { |
| 79 | + const unsubscribe = firebase.auth().onAuthStateChanged(user => { |
| 80 | + unsubscribe() |
| 81 | + resolve(user) |
| 82 | + }) |
| 83 | + }) |
| 84 | + |
| 85 | + if (process.env.NODE_ENV === 'development') { |
| 86 | + console.debug('Firebase user', user) |
| 87 | + } |
| 88 | + |
| 89 | + if (user) { |
| 90 | + await this.fetchUserDocument() |
| 91 | + } |
| 92 | + } |
| 93 | + } |
| 94 | + |
| 95 | + async promptLogin() { |
| 96 | + const customToken = await new Promise<string>((resolve, reject) => { |
| 97 | + const params: { [key: string]: string | undefined } = { |
| 98 | + response_type: 'code', |
| 99 | + client_id: process.env.PATREON_CLIENT_ID, |
| 100 | + redirect_uri: process.env.PATREON_REDIRECT_URI, |
| 101 | + scope: ['identity', 'identity[email]'].join(' ') |
| 102 | + } |
| 103 | + |
| 104 | + const url = new URL('https://www.patreon.com/oauth2/authorize') |
| 105 | + for (const key of Object.keys(params)) { |
| 106 | + url.searchParams.set(key, params[key] + '') |
| 107 | + } |
| 108 | + |
| 109 | + const win = window.open(url.href, 'MetastreamAuth') |
| 110 | + if (!win) { |
| 111 | + reject() |
| 112 | + return |
| 113 | + } |
| 114 | + |
| 115 | + window.addEventListener('message', function onAuthMessage(event: MessageEvent) { |
| 116 | + if (event.origin !== location.origin) return |
| 117 | + |
| 118 | + if (win.closed) { |
| 119 | + window.removeEventListener('message', onAuthMessage) |
| 120 | + reject() |
| 121 | + return |
| 122 | + } |
| 123 | + |
| 124 | + const action = typeof event.data === 'object' && event.data |
| 125 | + if (action && action.type === 'auth-token') { |
| 126 | + win.close() |
| 127 | + window.removeEventListener('message', onAuthMessage) |
| 128 | + |
| 129 | + if (action.error) { |
| 130 | + reject(new Error(action.error)) |
| 131 | + } else { |
| 132 | + resolve(action.token) |
| 133 | + } |
| 134 | + } |
| 135 | + }) |
| 136 | + }) |
| 137 | + |
| 138 | + await this.initFirebase() |
| 139 | + const userCred = await this.firebase.auth().signInWithCustomToken(customToken) |
| 140 | + |
| 141 | + if (process.env.NODE_ENV === 'development') { |
| 142 | + console.log(userCred) |
| 143 | + } |
| 144 | + |
| 145 | + // Remember that the user logged in so we can restore on refresh |
| 146 | + try { |
| 147 | + localStorage.setItem(StorageKey.Login, '1') |
| 148 | + } catch {} |
| 149 | + |
| 150 | + await this.fetchUserDocument() |
| 151 | + } |
| 152 | + |
| 153 | + async logout() { |
| 154 | + if (!this._firebase) return |
| 155 | + await this.firebase.auth().signOut() |
| 156 | + |
| 157 | + try { |
| 158 | + localStorage.removeItem(StorageKey.Login) |
| 159 | + } catch {} |
| 160 | + |
| 161 | + this._userData = undefined |
| 162 | + this.emit('change') |
| 163 | + } |
| 164 | +} |
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