265 lines
9.9 KiB
JavaScript
265 lines
9.9 KiB
JavaScript
/*
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Copyright 2014 OpenMarket Ltd
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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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'use strict';
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/*
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This service handles what should happen when you get an event. This service does
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not care where the event came from, it only needs enough context to be able to
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process them. Events may be coming from the event stream, the REST API (via
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direct GETs or via a pagination stream API), etc.
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Typically, this service will store events or broadcast them to any listeners
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(e.g. controllers) via $broadcast. Alternatively, it may update the $rootScope
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if typically all the $on method would do is update its own $scope.
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*/
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angular.module('eventHandlerService', [])
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.factory('eventHandlerService', ['matrixService', '$rootScope', '$q', function(matrixService, $rootScope, $q) {
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var ROOM_CREATE_EVENT = "ROOM_CREATE_EVENT";
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var MSG_EVENT = "MSG_EVENT";
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var MEMBER_EVENT = "MEMBER_EVENT";
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var PRESENCE_EVENT = "PRESENCE_EVENT";
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var POWERLEVEL_EVENT = "POWERLEVEL_EVENT";
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var CALL_EVENT = "CALL_EVENT";
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var NAME_EVENT = "NAME_EVENT";
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var initialSyncDeferred = $q.defer();
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$rootScope.events = {
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rooms: {} // will contain roomId: { messages:[], members:{userid1: event} }
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};
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// used for dedupping events - could be expanded in future...
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// FIXME: means that we leak memory over time (along with lots of the rest
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// of the app, given we never try to reap memory yet)
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var eventMap = {};
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$rootScope.presence = {};
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var initRoom = function(room_id) {
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if (!(room_id in $rootScope.events.rooms)) {
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console.log("Creating new handler entry for " + room_id);
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$rootScope.events.rooms[room_id] = {};
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$rootScope.events.rooms[room_id].messages = [];
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$rootScope.events.rooms[room_id].members = {};
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}
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};
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var resetRoomMessages = function(room_id) {
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if ($rootScope.events.rooms[room_id]) {
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$rootScope.events.rooms[room_id].messages = [];
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}
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};
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var handleRoomCreate = function(event, isLiveEvent) {
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initRoom(event.room_id);
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// For now, we do not use the event data. Simply signal it to the app controllers
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$rootScope.$broadcast(ROOM_CREATE_EVENT, event, isLiveEvent);
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};
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var handleRoomAliases = function(event, isLiveEvent) {
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matrixService.createRoomIdToAliasMapping(event.room_id, event.content.aliases[0]);
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};
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var handleMessage = function(event, isLiveEvent) {
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initRoom(event.room_id);
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if (isLiveEvent) {
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if (event.user_id === matrixService.config().user_id &&
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(event.content.msgtype === "m.text" || event.content.msgtype === "m.emote") ) {
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// assume we've already echoed it
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// FIXME: track events by ID and ungrey the right message to show it's been delivered
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}
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else {
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$rootScope.events.rooms[event.room_id].messages.push(event);
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}
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}
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else {
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$rootScope.events.rooms[event.room_id].messages.unshift(event);
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}
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// TODO send delivery receipt if isLiveEvent
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// $broadcast this, as controllers may want to do funky things such as
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// scroll to the bottom, etc which cannot be expressed via simple $scope
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// updates.
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$rootScope.$broadcast(MSG_EVENT, event, isLiveEvent);
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};
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var handleRoomMember = function(event, isLiveEvent) {
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initRoom(event.room_id);
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// if the server is stupidly re-relaying a no-op join, discard it.
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if (event.prev_content &&
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event.content.membership === "join" &&
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event.content.membership === event.prev_content.membership)
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{
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return;
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}
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// add membership changes as if they were a room message if something interesting changed
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if (event.content.prev !== event.content.membership) {
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if (isLiveEvent) {
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$rootScope.events.rooms[event.room_id].messages.push(event);
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}
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else {
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$rootScope.events.rooms[event.room_id].messages.unshift(event);
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}
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}
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$rootScope.events.rooms[event.room_id].members[event.state_key] = event;
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$rootScope.$broadcast(MEMBER_EVENT, event, isLiveEvent);
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};
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var handlePresence = function(event, isLiveEvent) {
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$rootScope.presence[event.content.user_id] = event;
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$rootScope.$broadcast(PRESENCE_EVENT, event, isLiveEvent);
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};
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var handlePowerLevels = function(event, isLiveEvent) {
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initRoom(event.room_id);
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// Keep the latest data. Do not care of events that come when paginating back
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if (!$rootScope.events.rooms[event.room_id][event.type] || isLiveEvent) {
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$rootScope.events.rooms[event.room_id][event.type] = event;
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$rootScope.$broadcast(POWERLEVEL_EVENT, event, isLiveEvent);
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}
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};
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var handleRoomName = function(event, isLiveEvent) {
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console.log("handleRoomName " + isLiveEvent);
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initRoom(event.room_id);
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$rootScope.events.rooms[event.room_id][event.type] = event;
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$rootScope.$broadcast(NAME_EVENT, event, isLiveEvent);
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};
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// TODO: Can this just be a generic "I am a room state event, can haz store?"
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var handleRoomTopic = function(event, isLiveEvent) {
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console.log("handleRoomTopic live="+isLiveEvent);
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initRoom(event.room_id);
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// live events always update, but non-live events only update if the
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// ts is later.
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if (!isLiveEvent) {
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var eventTs = event.ts;
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var storedEvent = $rootScope.events.rooms[event.room_id][event.type];
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if (storedEvent) {
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if (storedEvent.ts > eventTs) {
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// ignore it, we have a newer one already.
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return;
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}
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}
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}
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$rootScope.events.rooms[event.room_id][event.type] = event;
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};
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var handleCallEvent = function(event, isLiveEvent) {
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$rootScope.$broadcast(CALL_EVENT, event, isLiveEvent);
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if (event.type == 'm.call.invite') {
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$rootScope.events.rooms[event.room_id].messages.push(event);
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}
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};
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return {
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ROOM_CREATE_EVENT: ROOM_CREATE_EVENT,
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MSG_EVENT: MSG_EVENT,
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MEMBER_EVENT: MEMBER_EVENT,
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PRESENCE_EVENT: PRESENCE_EVENT,
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POWERLEVEL_EVENT: POWERLEVEL_EVENT,
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CALL_EVENT: CALL_EVENT,
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NAME_EVENT: NAME_EVENT,
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handleEvent: function(event, isLiveEvent) {
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// FIXME: event duplication suppression is all broken as the code currently expect to handles
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// events multiple times to get their side-effects...
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/*
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if (eventMap[event.event_id]) {
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console.log("discarding duplicate event: " + JSON.stringify(event));
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return;
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}
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else {
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eventMap[event.event_id] = 1;
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}
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*/
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if (event.type.indexOf('m.call.') === 0) {
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handleCallEvent(event, isLiveEvent);
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}
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else {
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switch(event.type) {
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case "m.room.create":
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handleRoomCreate(event, isLiveEvent);
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break;
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case "m.room.aliases":
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handleRoomAliases(event, isLiveEvent);
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break;
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case "m.room.message":
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handleMessage(event, isLiveEvent);
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break;
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case "m.room.member":
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handleRoomMember(event, isLiveEvent);
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break;
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case "m.presence":
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handlePresence(event, isLiveEvent);
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break;
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case 'm.room.ops_levels':
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case 'm.room.send_event_level':
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case 'm.room.add_state_level':
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case 'm.room.join_rules':
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case 'm.room.power_levels':
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handlePowerLevels(event, isLiveEvent);
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break;
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case 'm.room.name':
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handleRoomName(event, isLiveEvent);
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break;
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case 'm.room.topic':
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handleRoomTopic(event, isLiveEvent);
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break;
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default:
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console.log("Unable to handle event type " + event.type);
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console.log(JSON.stringify(event, undefined, 4));
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break;
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}
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}
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},
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// isLiveEvents determines whether notifications should be shown, whether
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// messages get appended to the start/end of lists, etc.
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handleEvents: function(events, isLiveEvents) {
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for (var i=0; i<events.length; i++) {
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this.handleEvent(events[i], isLiveEvents);
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}
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},
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handleInitialSyncDone: function(initialSyncData) {
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console.log("# handleInitialSyncDone");
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initialSyncDeferred.resolve(initialSyncData);
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},
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// Returns a promise that resolves when the initialSync request has been processed
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waitForInitialSyncCompletion: function() {
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return initialSyncDeferred.promise;
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},
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resetRoomMessages: function(room_id) {
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resetRoomMessages(room_id);
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}
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};
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}]);
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