408 lines
		
	
	
		
			15 KiB
		
	
	
	
		
			TypeScript
		
	
	
			
		
		
	
	
			408 lines
		
	
	
		
			15 KiB
		
	
	
	
		
			TypeScript
		
	
	
/*
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Copyright 2015, 2016 OpenMarket Ltd
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Copyright 2017 Vector Creations Ltd
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Copyright 2017 New Vector Ltd
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Copyright 2020 The Matrix.org Foundation C.I.C.
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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 { MatrixEvent } from "matrix-js-sdk/src/models/event";
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import { Room } from "matrix-js-sdk/src/models/room";
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import { MatrixClientPeg } from './MatrixClientPeg';
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import SdkConfig from './SdkConfig';
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import PlatformPeg from './PlatformPeg';
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import * as TextForEvent from './TextForEvent';
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import Analytics from './Analytics';
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import * as Avatar from './Avatar';
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import dis from './dispatcher/dispatcher';
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import { _t } from './languageHandler';
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import Modal from './Modal';
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import SettingsStore from "./settings/SettingsStore";
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import { hideToast as hideNotificationsToast } from "./toasts/DesktopNotificationsToast";
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import { SettingLevel } from "./settings/SettingLevel";
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import { isPushNotifyDisabled } from "./settings/controllers/NotificationControllers";
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import RoomViewStore from "./stores/RoomViewStore";
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import UserActivity from "./UserActivity";
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import { mediaFromMxc } from "./customisations/Media";
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import ErrorDialog from "./components/views/dialogs/ErrorDialog";
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/*
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 * Dispatches:
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 * {
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 *   action: "notifier_enabled",
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 *   value: boolean
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 * }
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 */
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const MAX_PENDING_ENCRYPTED = 20;
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/*
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Override both the content body and the TextForEvent handler for specific msgtypes, in notifications.
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This is useful when the content body contains fallback text that would explain that the client can't handle a particular
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type of tile.
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*/
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const typehandlers = {
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    "m.key.verification.request": (event) => {
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        const name = (event.sender || {}).name;
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        return _t("%(name)s is requesting verification", { name });
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    },
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};
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export const Notifier = {
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    notifsByRoom: {},
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    // A list of event IDs that we've received but need to wait until
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    // they're decrypted until we decide whether to notify for them
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    // or not
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    pendingEncryptedEventIds: [],
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    notificationMessageForEvent: function(ev: MatrixEvent): string {
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        if (typehandlers.hasOwnProperty(ev.getContent().msgtype)) {
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            return typehandlers[ev.getContent().msgtype](ev);
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        }
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        return TextForEvent.textForEvent(ev);
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    },
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    _displayPopupNotification: function(ev: MatrixEvent, room: Room) {
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        const plaf = PlatformPeg.get();
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        if (!plaf) {
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            return;
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        }
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        if (!plaf.supportsNotifications() || !plaf.maySendNotifications()) {
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            return;
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        }
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        if (global.document.hasFocus()) {
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            return;
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        }
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        let msg = this.notificationMessageForEvent(ev);
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        if (!msg) return;
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        let title;
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        if (!ev.sender || room.name === ev.sender.name) {
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            title = room.name;
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            // notificationMessageForEvent includes sender,
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            // but we already have the sender here
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            if (ev.getContent().body && !typehandlers.hasOwnProperty(ev.getContent().msgtype)) {
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                msg = ev.getContent().body;
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            }
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        } else if (ev.getType() === 'm.room.member') {
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            // context is all in the message here, we don't need
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            // to display sender info
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            title = room.name;
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        } else if (ev.sender) {
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            title = ev.sender.name + " (" + room.name + ")";
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            // notificationMessageForEvent includes sender,
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            // but we've just out sender in the title
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            if (ev.getContent().body && !typehandlers.hasOwnProperty(ev.getContent().msgtype)) {
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                msg = ev.getContent().body;
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            }
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        }
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        if (!this.isBodyEnabled()) {
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            msg = '';
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        }
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        let avatarUrl = null;
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        if (ev.sender && !SettingsStore.getValue("lowBandwidth")) {
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            avatarUrl = Avatar.avatarUrlForMember(ev.sender, 40, 40, 'crop');
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        }
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        const notif = plaf.displayNotification(title, msg, avatarUrl, room);
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        // if displayNotification returns non-null,  the platform supports
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        // clearing notifications later, so keep track of this.
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        if (notif) {
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            if (this.notifsByRoom[ev.getRoomId()] === undefined) this.notifsByRoom[ev.getRoomId()] = [];
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            this.notifsByRoom[ev.getRoomId()].push(notif);
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        }
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    },
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    getSoundForRoom: function(roomId: string) {
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        // We do no caching here because the SDK caches setting
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        // and the browser will cache the sound.
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        const content = SettingsStore.getValue("notificationSound", roomId);
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        if (!content) {
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            return null;
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        }
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        if (!content.url) {
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            console.warn(`${roomId} has custom notification sound event, but no url key`);
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            return null;
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        }
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        if (!content.url.startsWith("mxc://")) {
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            console.warn(`${roomId} has custom notification sound event, but url is not a mxc url`);
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            return null;
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        }
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        // Ideally in here we could use MSC1310 to detect the type of file, and reject it.
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        return {
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            url: mediaFromMxc(content.url).srcHttp,
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            name: content.name,
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            type: content.type,
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            size: content.size,
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        };
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    },
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    _playAudioNotification: async function(ev: MatrixEvent, room: Room) {
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        const sound = this.getSoundForRoom(room.roomId);
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        console.log(`Got sound ${sound && sound.name || "default"} for ${room.roomId}`);
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        try {
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            const selector =
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                document.querySelector<HTMLAudioElement>(sound ? `audio[src='${sound.url}']` : "#messageAudio");
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            let audioElement = selector;
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            if (!selector) {
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                if (!sound) {
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                    console.error("No audio element or sound to play for notification");
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                    return;
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                }
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                audioElement = new Audio(sound.url);
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                if (sound.type) {
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                    audioElement.type = sound.type;
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                }
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                document.body.appendChild(audioElement);
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            }
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            await audioElement.play();
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        } catch (ex) {
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            console.warn("Caught error when trying to fetch room notification sound:", ex);
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        }
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    },
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    start: function() {
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        // do not re-bind in the case of repeated call
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        this.boundOnEvent = this.boundOnEvent || this.onEvent.bind(this);
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        this.boundOnSyncStateChange = this.boundOnSyncStateChange || this.onSyncStateChange.bind(this);
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        this.boundOnRoomReceipt = this.boundOnRoomReceipt || this.onRoomReceipt.bind(this);
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        this.boundOnEventDecrypted = this.boundOnEventDecrypted || this.onEventDecrypted.bind(this);
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        MatrixClientPeg.get().on('event', this.boundOnEvent);
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        MatrixClientPeg.get().on('Room.receipt', this.boundOnRoomReceipt);
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        MatrixClientPeg.get().on('Event.decrypted', this.boundOnEventDecrypted);
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        MatrixClientPeg.get().on("sync", this.boundOnSyncStateChange);
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        this.toolbarHidden = false;
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        this.isSyncing = false;
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    },
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    stop: function() {
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        if (MatrixClientPeg.get()) {
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            MatrixClientPeg.get().removeListener('Event', this.boundOnEvent);
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            MatrixClientPeg.get().removeListener('Room.receipt', this.boundOnRoomReceipt);
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            MatrixClientPeg.get().removeListener('Event.decrypted', this.boundOnEventDecrypted);
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            MatrixClientPeg.get().removeListener('sync', this.boundOnSyncStateChange);
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        }
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        this.isSyncing = false;
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    },
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    supportsDesktopNotifications: function() {
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        const plaf = PlatformPeg.get();
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        return plaf && plaf.supportsNotifications();
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    },
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    setEnabled: function(enable: boolean, callback?: () => void) {
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        const plaf = PlatformPeg.get();
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        if (!plaf) return;
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        // Dev note: We don't set the "notificationsEnabled" setting to true here because it is a
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        // calculated value. It is determined based upon whether or not the master rule is enabled
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        // and other flags. Setting it here would cause a circular reference.
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        Analytics.trackEvent('Notifier', 'Set Enabled', String(enable));
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        // make sure that we persist the current setting audio_enabled setting
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        // before changing anything
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        if (SettingsStore.isLevelSupported(SettingLevel.DEVICE)) {
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            SettingsStore.setValue("audioNotificationsEnabled", null, SettingLevel.DEVICE, this.isEnabled());
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        }
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        if (enable) {
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            // Attempt to get permission from user
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            plaf.requestNotificationPermission().then((result) => {
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                if (result !== 'granted') {
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                    // The permission request was dismissed or denied
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                    // TODO: Support alternative branding in messaging
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                    const brand = SdkConfig.get().brand;
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                    const description = result === 'denied'
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                        ? _t('%(brand)s does not have permission to send you notifications - ' +
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                            'please check your browser settings', { brand })
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                        : _t('%(brand)s was not given permission to send notifications - please try again', { brand });
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                    Modal.createTrackedDialog('Unable to enable Notifications', result, ErrorDialog, {
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                        title: _t('Unable to enable Notifications'),
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                        description,
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                    });
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                    return;
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                }
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                if (callback) callback();
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                dis.dispatch({
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                    action: "notifier_enabled",
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                    value: true,
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                });
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            });
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        } else {
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            dis.dispatch({
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                action: "notifier_enabled",
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                value: false,
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            });
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        }
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        // set the notifications_hidden flag, as the user has knowingly interacted
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        // with the setting we shouldn't nag them any further
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        this.setPromptHidden(true);
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    },
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    isEnabled: function() {
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        return this.isPossible() && SettingsStore.getValue("notificationsEnabled");
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    },
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    isPossible: function() {
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        const plaf = PlatformPeg.get();
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        if (!plaf) return false;
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        if (!plaf.supportsNotifications()) return false;
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        if (!plaf.maySendNotifications()) return false;
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        return true; // possible, but not necessarily enabled
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    },
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    isBodyEnabled: function() {
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        return this.isEnabled() && SettingsStore.getValue("notificationBodyEnabled");
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    },
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    isAudioEnabled: function() {
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        // We don't route Audio via the HTML Notifications API so it is possible regardless of other things
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        return SettingsStore.getValue("audioNotificationsEnabled");
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    },
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    setPromptHidden: function(hidden: boolean, persistent = true) {
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        this.toolbarHidden = hidden;
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        Analytics.trackEvent('Notifier', 'Set Toolbar Hidden', String(hidden));
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        hideNotificationsToast();
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        // update the info to localStorage for persistent settings
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        if (persistent && global.localStorage) {
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            global.localStorage.setItem("notifications_hidden", String(hidden));
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        }
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    },
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    shouldShowPrompt: function() {
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        const client = MatrixClientPeg.get();
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        if (!client) {
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            return false;
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        }
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        const isGuest = client.isGuest();
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        return !isGuest && this.supportsDesktopNotifications() && !isPushNotifyDisabled() &&
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            !this.isEnabled() && !this._isPromptHidden();
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    },
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    _isPromptHidden: function() {
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        // Check localStorage for any such meta data
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        if (global.localStorage) {
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            return global.localStorage.getItem("notifications_hidden") === "true";
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        }
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        return this.toolbarHidden;
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    },
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    onSyncStateChange: function(state: string) {
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        if (state === "SYNCING") {
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            this.isSyncing = true;
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        } else if (state === "STOPPED" || state === "ERROR") {
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            this.isSyncing = false;
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        }
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    },
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    onEvent: function(ev: MatrixEvent) {
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        if (!this.isSyncing) return; // don't alert for any messages initially
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        if (ev.getSender() === MatrixClientPeg.get().credentials.userId) return;
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        MatrixClientPeg.get().decryptEventIfNeeded(ev);
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        // If it's an encrypted event and the type is still 'm.room.encrypted',
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        // it hasn't yet been decrypted, so wait until it is.
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        if (ev.isBeingDecrypted() || ev.isDecryptionFailure()) {
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            this.pendingEncryptedEventIds.push(ev.getId());
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            // don't let the list fill up indefinitely
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            while (this.pendingEncryptedEventIds.length > MAX_PENDING_ENCRYPTED) {
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                this.pendingEncryptedEventIds.shift();
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            }
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            return;
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        }
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        this._evaluateEvent(ev);
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    },
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    onEventDecrypted: function(ev: MatrixEvent) {
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        // 'decrypted' means the decryption process has finished: it may have failed,
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        // in which case it might decrypt soon if the keys arrive
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        if (ev.isDecryptionFailure()) return;
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        const idx = this.pendingEncryptedEventIds.indexOf(ev.getId());
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        if (idx === -1) return;
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        this.pendingEncryptedEventIds.splice(idx, 1);
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        this._evaluateEvent(ev);
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    },
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    onRoomReceipt: function(ev: MatrixEvent, room: Room) {
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        if (room.getUnreadNotificationCount() === 0) {
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            // ideally we would clear each notification when it was read,
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            // but we have no way, given a read receipt, to know whether
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            // the receipt comes before or after an event, so we can't
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            // do this. Instead, clear all notifications for a room once
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            // there are no notifs left in that room., which is not quite
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            // as good but it's something.
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            const plaf = PlatformPeg.get();
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            if (!plaf) return;
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            if (this.notifsByRoom[room.roomId] === undefined) return;
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            for (const notif of this.notifsByRoom[room.roomId]) {
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                plaf.clearNotification(notif);
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            }
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            delete this.notifsByRoom[room.roomId];
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        }
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    },
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    _evaluateEvent: function(ev) {
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        const room = MatrixClientPeg.get().getRoom(ev.getRoomId());
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        const actions = MatrixClientPeg.get().getPushActionsForEvent(ev);
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        if (actions && actions.notify) {
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            if (RoomViewStore.getRoomId() === room.roomId && UserActivity.sharedInstance().userActiveRecently()) {
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                // don't bother notifying as user was recently active in this room
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                return;
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            }
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            if (SettingsStore.getValue("doNotDisturb")) {
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                // Don't bother the user if they didn't ask to be bothered
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                return;
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            }
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            if (this.isEnabled()) {
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                this._displayPopupNotification(ev, room);
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            }
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            if (actions.tweaks.sound && this.isAudioEnabled()) {
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                PlatformPeg.get().loudNotification(ev, room);
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                this._playAudioNotification(ev, room);
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            }
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        }
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    },
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};
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if (!window.mxNotifier) {
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    window.mxNotifier = Notifier;
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}
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export default window.mxNotifier;
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