[IMPROVE] OTR refactoring

apps/meteor/app/otr/client/OTR.ts

@@ -0,0 +1,52 @@
+import { Meteor } from 'meteor/meteor';
+import { ReactiveVar } from 'meteor/reactive-var';
+
+import { IOTR } from '../lib/IOTR';
+import { Subscriptions } from '../../models/client';
+import { OTRRoom } from './OTRRoom';
+
+class OTR implements IOTR {
+	private enabled: ReactiveVar<boolean>;
+
+	private instancesByRoomId: { [rid: string]: OTRRoom };
+
+	constructor() {
+		this.enabled = new ReactiveVar(false);
+		this.instancesByRoomId = {};
+	}
+
+	isEnabled(): boolean {
+		return this.enabled.get();
+	}
+
+	setEnabled(enabled: boolean): void {
+		this.enabled.set(enabled);
+	}
+
+	getInstanceByRoomId(roomId: string): OTRRoom | undefined {
+		const userId = Meteor.userId();
+		if (!userId) {
+			return;
+		}
+		if (!this.enabled.get()) {
+			return;
+		}
+
+		if (this.instancesByRoomId[roomId]) {
+			return this.instancesByRoomId[roomId];
+		}
+
+		const subscription = Subscriptions.findOne({
+			rid: roomId,
+		});
+
+		if (!subscription || subscription.t !== 'd') {
+			return;
+		}
+
+		this.instancesByRoomId[roomId] = new OTRRoom(userId, roomId);
+		return this.instancesByRoomId[roomId];
+	}
+}
+
+export default new OTR();