Support discord:// uri scheme (#813)

Co-authored-by: v <vendicated@riseup.net>

src/main/index.ts

@@ -29,6 +29,8 @@ console.log("Vesktop v" + app.getVersion());
 process.env.VENCORD_USER_DATA_DIR = DATA_DIR;
 
 function init() {
+    app.setAsDefaultProtocolClient("discord");
+
     const { disableSmoothScroll, hardwareAcceleration } = Settings.store;
 
     const enabledFeatures = app.commandLine.getSwitchValue("enable-features").split(",");
@@ -119,6 +121,12 @@ async function bootstrap() {
     }
 }
 
+// MacOS only event
+export let darwinURL: string | undefined;
+app.on("open-url", (_, url) => {
+    darwinURL = url;
+});
+
 app.on("window-all-closed", () => {
     if (process.platform !== "darwin") app.quit();
 });