feat(web): link router (#10644)

feat: link router

web/src/routes/link/+page.ts

@@ -0,0 +1,34 @@
+import { AppRoute } from '$lib/constants';
+import { redirect } from '@sveltejs/kit';
+import type { PageLoad } from './$types';
+
+export const load = (({ url }) => {
+  enum LinkTarget {
+    HOME = 'home',
+    UNSUBSCRIBE = 'unsubscribe',
+    VIEW_ASSET = 'view_asset',
+  }
+
+  const queryParams = url.searchParams;
+  const target = queryParams.get('target') as LinkTarget;
+
+  switch (target) {
+    case LinkTarget.HOME: {
+      return redirect(302, AppRoute.PHOTOS);
+    }
+
+    case LinkTarget.UNSUBSCRIBE: {
+      return redirect(302, `${AppRoute.USER_SETTINGS}?isOpen=notifications`);
+    }
+
+    case LinkTarget.VIEW_ASSET: {
+      const id = queryParams.get('id');
+      if (id) {
+        return redirect(302, `${AppRoute.PHOTOS}/${id}`);
+      }
+      break;
+    }
+  }
+
+  return redirect(302, AppRoute.PHOTOS);
+}) satisfies PageLoad;