refactor(desktop): extract deep link handling into modules/deep-links.ts

surfsense_desktop/src/modules/deep-links.ts

@@ -0,0 +1,66 @@
+import { app } from 'electron';
+import path from 'path';
+import { getMainWindow } from './window';
+import { getServerPort } from './server';
+
+const PROTOCOL = 'surfsense';
+
+let deepLinkUrl: string | null = null;
+
+function handleDeepLink(url: string) {
+  if (!url.startsWith(`${PROTOCOL}://`)) return;
+
+  deepLinkUrl = url;
+
+  const win = getMainWindow();
+  if (!win) return;
+
+  const parsed = new URL(url);
+  if (parsed.hostname === 'auth' && parsed.pathname === '/callback') {
+    const params = parsed.searchParams.toString();
+    win.loadURL(`http://localhost:${getServerPort()}/auth/callback?${params}`);
+  }
+
+  win.show();
+  win.focus();
+}
+
+export function setupDeepLinks(): boolean {
+  const gotTheLock = app.requestSingleInstanceLock();
+  if (!gotTheLock) {
+    return false;
+  }
+
+  app.on('second-instance', (_event, argv) => {
+    const url = argv.find((arg) => arg.startsWith(`${PROTOCOL}://`));
+    if (url) handleDeepLink(url);
+
+    const win = getMainWindow();
+    if (win) {
+      if (win.isMinimized()) win.restore();
+      win.focus();
+    }
+  });
+
+  app.on('open-url', (event, url) => {
+    event.preventDefault();
+    handleDeepLink(url);
+  });
+
+  if (process.defaultApp) {
+    if (process.argv.length >= 2) {
+      app.setAsDefaultProtocolClient(PROTOCOL, process.execPath, [path.resolve(process.argv[1])]);
+    }
+  } else {
+    app.setAsDefaultProtocolClient(PROTOCOL);
+  }
+
+  return true;
+}
+
+export function handlePendingDeepLink(): void {
+  if (deepLinkUrl) {
+    handleDeepLink(deepLinkUrl);
+    deepLinkUrl = null;
+  }
+}