mirror of
https://github.com/streetwriters/notesnook.git
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81 lines
2.5 KiB
TypeScript
81 lines
2.5 KiB
TypeScript
/*
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This file is part of the Notesnook project (https://notesnook.com/)
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Copyright (C) 2023 Streetwriters (Private) Limited
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import { initTRPC } from "@trpc/server";
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import { observable } from "@trpc/server/observable";
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import { EventEmitter } from "events";
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import TypedEventEmitter from "typed-emitter";
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export type AppEvents = {
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onCreateItem(name: "note" | "notebook" | "reminder"): void;
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onOpenLink(url: string): void;
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bridgeReady(): void;
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};
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let isBridgeReady = false;
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const pendingEvents: { name: string; args: unknown[] }[] = [];
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const _emitter = new EventEmitter();
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const emitter = _emitter as TypedEventEmitter<AppEvents>;
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const t = initTRPC.create();
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export const bridgeRouter = t.router({
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onCreateItem: createSubscription("onCreateItem"),
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onOpenLink: createSubscription("onOpenLink"),
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ready: t.procedure.query(() => {
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isBridgeReady = true;
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if (pendingEvents.length > 0) {
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console.log(
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"Emitting pending events",
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pendingEvents.map((e) => e.name)
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);
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pendingEvents.forEach((event) => {
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emitter.emit(event.name as any, ...(event.args as any[]));
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});
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pendingEvents.length = 0;
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}
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return true;
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})
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});
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export const bridge: AppEvents = new Proxy({} as AppEvents, {
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get(_t, name) {
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if (typeof name === "symbol") return;
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return (...args: unknown[]) => {
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if (!isBridgeReady) {
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pendingEvents.push({ name, args });
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return;
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}
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_emitter.emit(name, ...args);
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};
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}
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});
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function createSubscription<TName extends keyof AppEvents>(eventName: TName) {
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return t.procedure.subscription(() => {
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return observable<Parameters<AppEvents[TName]>[0]>((emit) => {
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const listener: AppEvents[TName] = (...args: any[]) => {
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emit.next(args[0]);
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};
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emitter.addListener(eventName, listener);
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return () => {
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emitter.removeListener(eventName, listener);
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};
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});
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});
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}
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