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Add POC TimelineCallEventStore
Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>
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src/stores/TimelineCallEventStore.ts
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95
src/stores/TimelineCallEventStore.ts
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/*
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Copyright 2021 Šimon Brandner <simon.bra.ag@gmail.com>
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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 EventEmitter from "events";
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import { EventType } from "matrix-js-sdk/src/@types/event";
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import { MatrixEvent } from "matrix-js-sdk/src/models/event";
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const IGNORED_EVENTS = [
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EventType.CallNegotiate,
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EventType.CallCandidates,
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];
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export enum TimelineCallEventStoreEvent {
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CallsChanged = "calls_changed"
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}
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export enum TimelineCallState {
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Invite = "invited",
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Answered = "answered",
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Ended = "ended",
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Rejected = "rejected",
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Unknown = "unknown"
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}
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const EVENT_TYPE_TO_TIMELINE_CALL_STATE = new Map([
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[EventType.CallInvite, TimelineCallState.Invite],
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[EventType.CallSelectAnswer, TimelineCallState.Answered],
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[EventType.CallHangup, TimelineCallState.Ended],
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[EventType.CallReject, TimelineCallState.Rejected],
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]);
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export interface TimelineCall {
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state: TimelineCallState;
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date: Date;
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}
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/**
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* This gathers call events and creates objects for them accordingly, these can then be retrieved by CallEvent
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*/
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export default class TimelineCallEventStore extends EventEmitter {
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private calls: Map<string, TimelineCall> = new Map();
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private static internalInstance: TimelineCallEventStore;
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public static get instance(): TimelineCallEventStore {
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if (!TimelineCallEventStore.internalInstance) {
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TimelineCallEventStore.internalInstance = new TimelineCallEventStore;
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}
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return TimelineCallEventStore.internalInstance;
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}
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public clear() {
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this.calls.clear();
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}
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public getInfoByCallId(callId: string): TimelineCall {
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return this.calls.get(callId);
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}
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private getCallState(type: EventType): TimelineCallState {
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return EVENT_TYPE_TO_TIMELINE_CALL_STATE.get(type);
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}
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public addEvent(event: MatrixEvent) {
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if (IGNORED_EVENTS.includes(event.getType())) return;
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const callId = event.getContent().call_id;
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const date = event.getDate();
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const state = this.getCallState(event.getType());
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if (date < this.calls.get(callId)?.date) return;
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if (!state) return;
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this.calls.set(callId, {
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state: state,
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date: date,
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});
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this.emit(TimelineCallEventStoreEvent.CallsChanged, this.calls)
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}
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}
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