import {createEnum} from "../utils/enum.js"; import {ObservableValue} from "../observable/ObservableValue.js"; import {HomeServerApi} from "./net/HomeServerApi.js"; import {Reconnector, ConnectionStatus} from "./net/Reconnector.js"; import {ExponentialRetryDelay} from "./net/ExponentialRetryDelay.js"; import {HomeServerError, ConnectionError, AbortError} from "./error.js"; import {Sync, SyncStatus} from "./Sync.js"; import {Session} from "./Session.js"; export const LoadStatus = createEnum( "NotLoading", "Login", "LoginFailed", "Loading", "Migrating", //not used atm, but would fit here "FirstSync", "Error", "Ready", ); export const LoginFailure = createEnum( "Connection", "Credentials", "Unknown", ); export class SessionContainer { constructor({clock, random, onlineStatus, request, storageFactory, sessionInfoStorage}) { this._random = random; this._clock = clock; this._onlineStatus = onlineStatus; this._request = request; this._storageFactory = storageFactory; this._sessionInfoStorage = sessionInfoStorage; this._status = new ObservableValue(LoadStatus.NotLoading); this._error = null; this._loginFailure = null; this._reconnector = null; this._session = null; this._sync = null; this._sessionId = null; this._storage = null; } createNewSessionId() { return (Math.floor(this._random() * Number.MAX_SAFE_INTEGER)).toString(); } async startWithExistingSession(sessionId) { if (this._status.get() !== LoadStatus.NotLoading) { return; } this._status.set(LoadStatus.Loading); try { const sessionInfo = await this._sessionInfoStorage.get(sessionId); if (!sessionInfo) { throw new Error("Invalid session id: " + sessionId); } await this._loadSessionInfo(sessionInfo); } catch (err) { this._error = err; this._status.set(LoadStatus.Error); } } async startWithLogin(homeServer, username, password) { if (this._status.get() !== LoadStatus.NotLoading) { return; } this._status.set(LoadStatus.Login); let sessionInfo; try { const hsApi = new HomeServerApi({homeServer, request: this._request}); const loginData = await hsApi.passwordLogin(username, password).response(); const sessionId = this.createNewSessionId(); sessionInfo = { id: sessionId, deviceId: loginData.device_id, userId: loginData.user_id, homeServer: homeServer, accessToken: loginData.access_token, lastUsed: this._clock.now() }; await this._sessionInfoStorage.add(sessionInfo); } catch (err) { this._error = err; if (err instanceof HomeServerError) { if (err.statusCode === 403) { this._loginFailure = LoginFailure.Credentials; } else { this._loginFailure = LoginFailure.Unknown; } this._status.set(LoadStatus.LoginFailure); } else if (err instanceof ConnectionError) { this._loginFailure = LoginFailure.Connection; this._status.set(LoadStatus.LoginFailure); } else { this._status.set(LoadStatus.Error); } return; } // loading the session can only lead to // LoadStatus.Error in case of an error, // so separate try/catch try { await this._loadSessionInfo(sessionInfo); } catch (err) { this._error = err; this._status.set(LoadStatus.Error); } } async _loadSessionInfo(sessionInfo) { this._status.set(LoadStatus.Loading); this._reconnector = new Reconnector({ onlineStatus: this._onlineStatus, retryDelay: new ExponentialRetryDelay(this._clock.createTimeout), createMeasure: this._clock.createMeasure }); const hsApi = new HomeServerApi({ homeServer: sessionInfo.homeServer, accessToken: sessionInfo.accessToken, request: this._request, reconnector: this._reconnector, }); this._sessionId = sessionInfo.id; this._storage = await this._storageFactory.create(sessionInfo.id); // no need to pass access token to session const filteredSessionInfo = { deviceId: sessionInfo.deviceId, userId: sessionInfo.userId, homeServer: sessionInfo.homeServer, }; this._session = new Session({storage: this._storage, sessionInfo: filteredSessionInfo, hsApi}); await this._session.load(); this._sync = new Sync({hsApi, storage: this._storage, session: this._session}); // notify sync and session when back online this._reconnectSubscription = this._reconnector.connectionStatus.subscribe(state => { if (state === ConnectionStatus.Online) { this._sync.start(); this._session.start(this._reconnector.lastVersionsResponse); } }); await this._waitForFirstSync(); this._status.set(LoadStatus.Ready); // if the sync failed, and then the reconnector // restored the connection, it would have already // started to session, so check first // to prevent an extra /versions request if (!this._session.isStarted) { const lastVersionsResponse = await hsApi.versions({timeout: 10000}).response(); this._session.start(lastVersionsResponse); } } async _waitForFirstSync() { try { this._status.set(LoadStatus.FirstSync); this._sync.start(); } catch (err) { // swallow ConnectionError here and continue, // as the reconnector above will call // sync.start again to retry in this case if (!(err instanceof ConnectionError)) { throw err; } } // only transition into Ready once the first sync has succeeded this._waitForFirstSyncHandle = this._sync.status.waitFor(s => s === SyncStatus.Syncing); try { await this._waitForFirstSyncHandle.promise; } catch (err) { // if dispose is called from stop, bail out if (err instanceof AbortError) { return; } throw err; } finally { this._waitForFirstSyncHandle = null; } } get loadStatus() { return this._status; } get loadError() { return this._error; } /** only set at loadStatus InitialSync, CatchupSync or Ready */ get sync() { return this._sync; } /** only set at loadStatus InitialSync, CatchupSync or Ready */ get session() { return this._session; } stop() { this._reconnectSubscription(); this._reconnectSubscription = null; this._sync.stop(); this._session.stop(); if (this._waitForFirstSyncHandle) { this._waitForFirstSyncHandle.dispose(); this._waitForFirstSyncHandle = null; } if (this._storage) { this._storage.close(); this._storage = null; } } async deleteSession() { if (this._sessionId) { // if one fails, don't block the other from trying // also, run in parallel await Promise.all([ this._storageFactory.delete(this._sessionId), this._sessionInfoStorage.delete(this._sessionId), ]); this._sessionId = null; } } }