refactor(search): local search ignores domain filter

Der Domain-Filter im Header-Dropdown wirkt ab jetzt ausschliesslich auf
die Web-Suche (SearXNG). Die Suche in gespeicherten Rezepten liefert
immer alle Treffer, unabhaengig von der Quelldomain -- wer ein Rezept
gespeichert hat, will es finden, selbst wenn er die Domain aus dem
Filter ausgeschlossen hat.

- SearchStore: filterParam -> webFilterParam, nur noch an Web-Calls
- /api/recipes/search: domains-Query-Param wird nicht mehr gelesen
- searchLocal(): domains-Parameter + SQL-Branch entfernt
- Tests entsprechend angepasst

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/client/search.svelte.ts

@@ -17,7 +17,7 @@ export type SearchStoreOptions = {
   debounceMs?: number;
   filterDebounceMs?: number;
   minQueryLength?: number;
-  filterParam?: () => string;
+  webFilterParam?: () => string;
   fetchImpl?: typeof fetch;
 };
 
@@ -38,7 +38,7 @@ export class SearchStore {
   private readonly debounceMs: number;
   private readonly filterDebounceMs: number;
   private readonly minQueryLength: number;
-  private readonly filterParam: () => string;
+  private readonly webFilterParam: () => string;
   private readonly fetchImpl: typeof fetch;
   private debounceTimer: ReturnType<typeof setTimeout> | null = null;
   private skipNextDebounce = false;
@@ -48,7 +48,7 @@ export class SearchStore {
     this.debounceMs = opts.debounceMs ?? 300;
     this.filterDebounceMs = opts.filterDebounceMs ?? 150;
     this.minQueryLength = opts.minQueryLength ?? 4;
-    this.filterParam = opts.filterParam ?? (() => '');
+    this.webFilterParam = opts.webFilterParam ?? (() => '');
     this.fetchImpl = opts.fetchImpl ?? ((...a) => fetch(...a));
   }
 
@@ -80,7 +80,7 @@ export class SearchStore {
     this.webExhausted = false;
     try {
       const res = await this.fetchImpl(
-        `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${this.pageSize}${this.filterParam()}`
+        `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${this.pageSize}`
       );
       const body = (await res.json()) as { hits: SearchHit[] };
       if (this.query.trim() !== q) return;
@@ -99,7 +99,7 @@ export class SearchStore {
     this.webSearching = true;
     try {
       const res = await this.fetchImpl(
-        `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=${pageno}${this.filterParam()}`
+        `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=${pageno}${this.webFilterParam()}`
       );
       if (this.query.trim() !== q) return;
       if (!res.ok) {
@@ -125,7 +125,7 @@ export class SearchStore {
     try {
       if (!this.localExhausted) {
         const res = await this.fetchImpl(
-          `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${this.pageSize}&offset=${this.hits.length}${this.filterParam()}`
+          `/api/recipes/search?q=${encodeURIComponent(q)}&limit=${this.pageSize}&offset=${this.hits.length}`
         );
         const body = (await res.json()) as { hits: SearchHit[] };
         if (this.query.trim() !== q) return;
@@ -140,7 +140,7 @@ export class SearchStore {
         if (wasEmpty) this.webSearching = true;
         try {
           const res = await this.fetchImpl(
-            `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=${nextPage}${this.filterParam()}`
+            `/api/recipes/search/web?q=${encodeURIComponent(q)}&pageno=${nextPage}${this.webFilterParam()}`
           );
           if (this.query.trim() !== q) return;
           if (!res.ok) {

src/lib/server/recipes/search-local.ts

@@ -30,15 +30,12 @@ export function searchLocal(
   db: Database.Database,
   query: string,
   limit = 30,
-  offset = 0,
-  domains: string[] = []
+  offset = 0
 ): SearchHit[] {
   const fts = buildFtsQuery(query);
   if (!fts) return [];
 
   // bm25: lower is better. Use weights: title > tags > ingredients > description
-  const hasFilter = domains.length > 0;
-  const placeholders = hasFilter ? domains.map(() => '?').join(',') : '';
   const sql = `SELECT r.id,
               r.title,
               r.description,
@@ -49,13 +46,9 @@ export function searchLocal(
          FROM recipe r
          JOIN recipe_fts f ON f.rowid = r.id
         WHERE recipe_fts MATCH ?
-          ${hasFilter ? `AND r.source_domain IN (${placeholders})` : ''}
         ORDER BY bm25(recipe_fts, 10.0, 0.5, 2.0, 5.0)
         LIMIT ? OFFSET ?`;
-  const params = hasFilter
-    ? [fts, ...domains, limit, offset]
-    : [fts, limit, offset];
-  return db.prepare(sql).all(...params) as SearchHit[];
+  return db.prepare(sql).all(fts, limit, offset) as SearchHit[];
 }
 
 export function listRecentRecipes(

src/routes/+layout.svelte

@@ -31,7 +31,7 @@
 
   const navStore = new SearchStore({
     pageSize: 30,
-    filterParam: () => {
+    webFilterParam: () => {
       const p = searchFilterStore.queryParam;
       return p ? `&domains=${encodeURIComponent(p)}` : '';
     }

src/routes/+page.svelte

@@ -16,7 +16,7 @@
 
   const store = new SearchStore({
     pageSize: LOCAL_PAGE,
-    filterParam: () => {
+    webFilterParam: () => {
       const p = searchFilterStore.queryParam;
       return p ? `&domains=${encodeURIComponent(p)}` : '';
     }

src/routes/api/recipes/search/+server.ts

@@ -7,13 +7,9 @@ export const GET: RequestHandler = async ({ url }) => {
   const q = url.searchParams.get('q')?.trim() ?? '';
   const limit = Math.min(Number(url.searchParams.get('limit') ?? 30), 100);
   const offset = Math.max(0, Number(url.searchParams.get('offset') ?? 0));
-  const domains = (url.searchParams.get('domains') ?? '')
-    .split(',')
-    .map((d) => d.trim())
-    .filter(Boolean);
   const hits =
     q.length >= 1
-      ? searchLocal(getDb(), q, limit, offset, domains)
+      ? searchLocal(getDb(), q, limit, offset)
       : offset === 0
         ? listRecentRecipes(getDb(), limit)
         : [];

tests/integration/search-local.test.ts

@@ -69,20 +69,11 @@ describe('searchLocal', () => {
     expect(searchLocal(db, '   ')).toEqual([]);
   });
 
-  it('filters by domain when supplied', () => {
+  it('ignores source_domain — local search is domain-agnostic', () => {
     const db = openInMemoryForTest();
     insertRecipe(db, recipe({ title: 'Apfelstrudel', source_domain: 'chefkoch.de' }));
     insertRecipe(db, recipe({ title: 'Apfeltraum', source_domain: 'rezeptwelt.de' }));
-    const hits = searchLocal(db, 'apfel', 10, 0, ['chefkoch.de']);
-    expect(hits.length).toBe(1);
-    expect(hits[0].source_domain).toBe('chefkoch.de');
-  });
-
-  it('no domain filter when array is empty', () => {
-    const db = openInMemoryForTest();
-    insertRecipe(db, recipe({ title: 'Apfelstrudel', source_domain: 'chefkoch.de' }));
-    insertRecipe(db, recipe({ title: 'Apfeltraum', source_domain: 'rezeptwelt.de' }));
-    const hits = searchLocal(db, 'apfel', 10, 0, []);
+    const hits = searchLocal(db, 'apfel');
     expect(hits.length).toBe(2);
   });
 

tests/unit/search-store.test.ts

@@ -202,7 +202,7 @@ describe('SearchStore', () => {
     expect(round).toEqual(snap);
   });
 
-  it('filterParam option: gets appended to both local and web requests', async () => {
+  it('webFilterParam option: only appended to web requests, never to local', async () => {
     vi.useFakeTimers();
     const fetchImpl = mockFetch([
       { body: { hits: [] } },
@@ -211,13 +211,15 @@ describe('SearchStore', () => {
     const store = new SearchStore({
       fetchImpl,
       debounceMs: 10,
-      filterParam: () => '&domains=chefkoch.de'
+      webFilterParam: () => '&domains=chefkoch.de'
     });
     store.query = 'curry';
     store.runDebounced();
     await vi.advanceTimersByTimeAsync(15);
     await vi.waitFor(() => expect(fetchImpl).toHaveBeenCalledTimes(2));
-    expect(fetchImpl.mock.calls[0][0]).toMatch(/&domains=chefkoch\.de/);
+    expect(fetchImpl.mock.calls[0][0]).not.toMatch(/domains=/);
+    expect(fetchImpl.mock.calls[0][0]).toMatch(/\/api\/recipes\/search\?/);
+    expect(fetchImpl.mock.calls[1][0]).toMatch(/\/api\/recipes\/search\/web\?/);
     expect(fetchImpl.mock.calls[1][0]).toMatch(/&domains=chefkoch\.de/);
   });
 
@@ -243,22 +245,25 @@ describe('SearchStore', () => {
     const fetchImpl = mockFetch([
       { body: { hits: [] } },
       { body: { hits: [] } },
-      { body: { hits: [{ id: 1, title: 'filtered', description: null, image_path: null, source_domain: null, avg_stars: null, last_cooked_at: null }] } }
+      { body: { hits: [] } },
+      { body: { hits: [{ url: 'https://chefkoch.de/x', title: 'filtered', domain: 'chefkoch.de', snippet: null, thumbnail: null }] } }
     ]);
     const store = new SearchStore({
       fetchImpl,
       debounceMs: 10,
       filterDebounceMs: 5,
-      filterParam: () => filter
+      webFilterParam: () => filter
     });
     store.query = 'broth';
     store.runDebounced();
     await vi.advanceTimersByTimeAsync(15);
+    await vi.waitFor(() => expect(fetchImpl).toHaveBeenCalledTimes(2));
     filter = '&domains=chefkoch.de';
     store.reSearch();
     await vi.advanceTimersByTimeAsync(10);
-    await vi.waitFor(() => expect(store.hits).toHaveLength(1));
+    await vi.waitFor(() => expect(store.webHits).toHaveLength(1));
     const last = fetchImpl.mock.calls.at(-1)?.[0] as string;
+    expect(last).toMatch(/\/api\/recipes\/search\/web\?/);
     expect(last).toMatch(/&domains=chefkoch\.de/);
   });
 });