2021-08-15 16:21:00 +05:30
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/*
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Copyright 2020 Bruno Windels <bruno@windels.cloud>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {ViewModel} from "../ViewModel.js";
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import {PasswordLoginViewModel} from "./PasswordLoginViewModel.js";
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2021-08-17 17:01:03 +05:30
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import {StartSSOLoginViewModel} from "./StartSSOLoginViewModel.js";
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import {CompleteSSOLoginViewModel} from "./CompleteSSOLoginViewModel.js";
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import {LoadStatus} from "../../matrix/SessionContainer.js";
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import {SessionLoadViewModel} from "../SessionLoadViewModel.js";
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export class LoginViewModel extends ViewModel {
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constructor(options) {
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super(options);
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const {ready, defaultHomeServer, createSessionContainer, loginToken} = options;
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this._createSessionContainer = createSessionContainer;
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this._ready = ready;
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this._loginToken = loginToken;
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this._sessionContainer = this._createSessionContainer();
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this._loginOptions = null;
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this._passwordLoginViewModel = null;
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this._startSSOLoginViewModel = null;
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this._completeSSOLoginViewModel = null;
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this._loadViewModel = null;
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this._loadViewModelSubscription = null;
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this._homeserver = defaultHomeServer;
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this._errorMessage = "";
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this._hideHomeserver = false;
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this._isBusy = false;
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this._isFetchingLoginOptions = false;
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this._createViewModels(this._homeserver);
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}
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get passwordLoginViewModel() { return this._passwordLoginViewModel; }
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get startSSOLoginViewModel() { return this._startSSOLoginViewModel; }
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get completeSSOLoginViewModel(){ return this._completeSSOLoginViewModel; }
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get homeserver() { return this._homeserver; }
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get errorMessage() { return this._errorMessage; }
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get showHomeserver() { return !this._hideHomeserver; }
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get loadViewModel() {return this._loadViewModel; }
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get isBusy() { return this._isBusy; }
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get isFetchingLoginOptions() { return this._isFetchingLoginOptions; }
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goBack() {
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const path = this.navigation.pathFrom([this.navigation.segment("session")]);
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this.navigation.applyPath(path);
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}
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async _createViewModels(homeserver) {
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if (this._loginToken) {
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this._hideHomeserver = true;
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this._completeSSOLoginViewModel = this.track(new CompleteSSOLoginViewModel(
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this.childOptions(
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{
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sessionContainer: this._sessionContainer,
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attemptLogin: loginMethod => this.attemptLogin(loginMethod),
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loginToken: this._loginToken
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})));
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this.emitChange("completeSSOLoginViewModel");
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}
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else {
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this._errorMessage = "";
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try {
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this._isFetchingLoginOptions = true;
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this.emitChange("isFetchingLoginOptions");
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this._loginOptions = await this._sessionContainer.queryLogin(homeserver);
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}
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catch (e) {
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this._loginOptions = null;
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}
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this._isFetchingLoginOptions = false;
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this.emitChange("isFetchingLoginOptions");
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if (this._loginOptions) {
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if (this._loginOptions.sso) { this._showSSOLogin(); }
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if (this._loginOptions.password) { this._showPasswordLogin(); }
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if (!this._loginOptions.sso && !this._loginOptions.password) {
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this._showError("This homeserver neither supports SSO nor Password based login flows");
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}
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}
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else {
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this._showError("Could not query login methods supported by the homeserver");
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}
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}
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}
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_showPasswordLogin() {
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this._passwordLoginViewModel = this.track(new PasswordLoginViewModel(
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this.childOptions({
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loginOptions: this._loginOptions,
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attemptLogin: loginMethod => this.attemptLogin(loginMethod)
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})));
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this.emitChange("passwordLoginViewModel");
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}
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_showSSOLogin() {
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this._startSSOLoginViewModel = this.track(
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new StartSSOLoginViewModel(this.childOptions({loginOptions: this._loginOptions}))
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);
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this.emitChange("startSSOLoginViewModel");
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}
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_showError(message) {
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this._errorMessage = message;
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this.emitChange("errorMessage");
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}
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_toggleBusy() {
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this._isBusy = !this._isBusy;
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this._passwordLoginViewModel?.toggleBusy();
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this._startSSOLoginViewModel?.toggleBusy();
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this.emitChange("isBusy");
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}
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async attemptLogin(loginMethod) {
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this._toggleBusy();
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this._sessionContainer.startWithLogin(loginMethod);
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const loadStatus = this._sessionContainer.loadStatus;
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const handle = loadStatus.waitFor(status => status !== LoadStatus.Login);
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await handle.promise;
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this._toggleBusy();
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const status = loadStatus.get();
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if (status === LoadStatus.LoginFailed) {
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return this._sessionContainer.loginFailure;
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}
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this._hideHomeserver = true;
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this.emitChange("hideHomeserver");
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this._disposeViewModels();
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this._createLoadViewModel();
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return null;
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}
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_createLoadViewModel() {
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this._loadViewModelSubscription = this.disposeTracked(this._loadViewModelSubscription);
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this._loadViewModel = this.disposeTracked(this._loadViewModel);
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this._loadViewModel = this.track(
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new SessionLoadViewModel(
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this.childOptions({
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ready: (sessionContainer) => {
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// make sure we don't delete the session in dispose when navigating away
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this._sessionContainer = null;
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this._ready(sessionContainer);
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},
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sessionContainer: this._sessionContainer,
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homeserver: this._homeserver
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})
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)
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);
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this._loadViewModel.start();
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this.emitChange("loadViewModel");
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this._loadViewModelSubscription = this.track(
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this._loadViewModel.disposableOn("change", () => {
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if (!this._loadViewModel.loading) {
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this._loadViewModelSubscription = this.disposeTracked(this._loadViewModelSubscription);
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}
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this._toggleBusy(false);
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})
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);
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}
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_disposeViewModels() {
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this._startSSOLoginViewModel = this.disposeTracked(this._ssoLoginViewModel);
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this._passwordLoginViewModel = this.disposeTracked(this._passwordLoginViewModel);
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this._completeSSOLoginViewModel = this.disposeTracked(this._completeSSOLoginViewModel);
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this.emitChange("disposeViewModels");
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}
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updateHomeServer(newHomeserver) {
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this._errorMessage = "";
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this.emitChange("errorMessage");
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this._homeserver = newHomeserver;
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this._disposeViewModels();
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this._createViewModels(newHomeserver);
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}
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dispose() {
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super.dispose();
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if (this._sessionContainer) {
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// if we move away before we're done with initial sync
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// delete the session
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this._sessionContainer.deleteSession();
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}
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}
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}
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