126 lines
2.8 KiB
JavaScript
126 lines
2.8 KiB
JavaScript
/* eslint-disable no-underscore-dangle */
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import { v4 as uuidv4 } from 'uuid';
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import { delay } from '../../../src/utils/index';
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import AuthProvider from './authProvider';
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import Constants from '../constants/auth';
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import GoogleAuthProvider from './googleAuthProvider';
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import User from './user';
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const singleton = Symbol('');
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const singletonEnforcer = Symbol('');
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class Auth {
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constructor(enforcer) {
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if (enforcer !== singletonEnforcer) {
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throw new Error('Cannot construct singleton');
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}
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this._uuid = uuidv4();
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this._currentUser = null;
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this._onAuthStateChangedObservers = [];
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}
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static get instance() {
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if (!this[singleton]) {
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this[singleton] = new Auth(singletonEnforcer);
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}
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return this[singleton];
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}
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get currentUser() {
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return this._currentUser;
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}
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get uuid() {
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return this._uuid;
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}
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get onAuthStateChangedObservers() {
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return this._onAuthStateChangedObservers;
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}
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onAuthStateChanged(observer) {
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this.onAuthStateChangedObservers.push(observer);
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return () => {
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this._onAuthStateChangedObservers =
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this.onAuthStateChangedObservers.filter((obs) => obs !== observer);
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};
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}
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async signInAnonymously() {
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const user = Constants.anonymousUser1;
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this._currentUser = new User(
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user.displayName,
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user.email,
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user.providerId,
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user.uid,
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user.isAnonymous,
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this.signOut.bind(this),
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);
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await delay(Constants.defaultDelayInMilliseconds);
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this.onAuthStateChangedObservers.forEach((observer) =>
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observer(this._currentUser),
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);
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return this._currentUser;
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}
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/**
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* Authenticates with popup.
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*
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* @param {AuthProvider} provider The provider to authenticate.
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*/
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async signInWithPopup(provider) {
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if (!provider) {
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throw new Error('provider must be provided.');
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} else if (!(provider instanceof AuthProvider)) {
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throw new Error('provider should be an AuthProvider.');
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}
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if (!(provider instanceof GoogleAuthProvider)) {
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throw new Error(
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`${provider.constructor.name} is currently not supported.`,
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);
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}
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const user = Constants.googleUser3;
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this._currentUser = new User(
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user.displayName,
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user.email,
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user.providerId,
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user.uid,
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user.isAnonymous,
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this.signOut.bind(this),
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);
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await delay(Constants.defaultDelayInMilliseconds);
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this.onAuthStateChangedObservers.forEach((observer) =>
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observer(this._currentUser),
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);
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return this._currentUser;
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}
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async signOut() {
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if (this._currentUser === null) {
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return;
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}
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this._currentUser = null;
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await delay(Constants.defaultDelayInMilliseconds);
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this.onAuthStateChangedObservers.forEach((observer) => observer(null));
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}
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}
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export default Auth;
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