Support invite modal launch from web

src/main/arrpc.ts

@@ -5,17 +5,36 @@
  */
 
 import Server from "arrpc";
-import { send as sendToBridge } from "arrpc/src/bridge";
 
+import { mainWin } from "./mainWindow";
 import { Settings } from "./settings";
 
 let server: any;
 
+const inviteCodeRegex = /^(\w|-)+$/;
+
 export async function initArRPC() {
     if (server || !Settings.store.arRPC) return;
 
-    server = await new Server();
-    server.on("activity", sendToBridge);
+    try {
+        // This module starts a server as a side effect, so it needs to be lazy imported
+        const { send: sendToBridge } = await import("arrpc/src/bridge");
+
+        server = await new Server();
+        server.on("activity", sendToBridge);
+        server.on("invite", (invite: string, callback: (valid: boolean) => void) => {
+            invite = String(invite);
+            if (!inviteCodeRegex.test(invite)) return callback(false);
+
+            mainWin.webContents
+                // Safety: Result of JSON.stringify should always be safe to equal
+                // Also, just to be super super safe, invite is regex validated above
+                .executeJavaScript(`VencordDesktop.openInviteModal(${JSON.stringify(invite)})`)
+                .then(callback);
+        });
+    } catch (e) {
+        console.error("Failed to start arRPC server", e);
+    }
 }
 
 Settings.addChangeListener("arRPC", initArRPC);