add main to renderer command API

src/renderer/ipcCommands.ts

@@ -0,0 +1,49 @@
+/*
+ * SPDX-License-Identifier: GPL-3.0
+ * Vesktop, a desktop app aiming to give you a snappier Discord Experience
+ * Copyright (c) 2023 Vendicated and Vencord contributors
+ */
+
+import { SettingsRouter } from "@vencord/types/webpack/common";
+import { IpcCommands } from "shared/IpcEvents";
+
+type IpcCommandHandler = (data: any) => any;
+
+const handlers = new Map<string, IpcCommandHandler>();
+
+function respond(nonce: string, ok: boolean, data: any) {
+    VesktopNative.commands.respond({ nonce, ok, data });
+}
+
+VesktopNative.commands.onCommand(async ({ message, nonce, data }) => {
+    const handler = handlers.get(message);
+    if (!handler) {
+        return respond(nonce, false, `No handler for message: ${message}`);
+    }
+
+    try {
+        const result = await handler(data);
+        respond(nonce, true, result);
+    } catch (err) {
+        respond(nonce, false, String(err));
+    }
+});
+
+export function onIpcCommand(channel: string, handler: IpcCommandHandler) {
+    if (handlers.has(channel)) {
+        throw new Error(`Handler for message ${channel} already exists`);
+    }
+
+    handlers.set(channel, handler);
+}
+
+export function offIpcCommand(channel: string) {
+    handlers.delete(channel);
+}
+
+/* Generic Handlers */
+
+onIpcCommand(IpcCommands.NAVIGATE_SETTINGS, () => {
+    SettingsRouter.open("My Account");
+});
+onIpcCommand(IpcCommands.GET_LANGUAGES, () => navigator.languages);