server be & fe

shared/src/deepLink.ts

@@ -0,0 +1,20 @@
+export const DEEP_LINK_SCHEME = 'cardy';
+
+export function buildLoginDeepLink(server: string, key: string): string {
+  return `${DEEP_LINK_SCHEME}://login?server=${encodeURIComponent(server)}&key=${encodeURIComponent(key)}`;
+}
+
+export function parseLoginDeepLink(link: string): { server: string; key: string } | null {
+  let url: URL;
+  try {
+    url = new URL(link.trim());
+  } catch {
+    return null;
+  }
+  // Non-special schemes put "login" into host for "cardy://login?…".
+  if (url.protocol !== `${DEEP_LINK_SCHEME}:` || url.host !== 'login') return null;
+  const server = url.searchParams.get('server');
+  const key = url.searchParams.get('key');
+  if (!server || !key) return null;
+  return { server, key };
+}