From 931036fe62130bd6851174ad3f129e40d77b5ed8 Mon Sep 17 00:00:00 2001
From: Hikmet <hikmet044@gmail.com>
Date: Sun, 23 Aug 2026 06:12:49 +0300
Subject: [PATCH] fix: match Turkish search accents

---
 src/app/dashboard/ads/page.tsx | 16 ++++++++--------
 src/lib/ad-search.ts           | 19 +++++++++++++++++++
 tests/core.test.ts             |  7 ++++++-
 3 files changed, 33 insertions(+), 9 deletions(-)

diff --git a/src/app/dashboard/ads/page.tsx b/src/app/dashboard/ads/page.tsx
index 017a02c..fcd5fac 100644
--- a/src/app/dashboard/ads/page.tsx
+++ b/src/app/dashboard/ads/page.tsx
@@ -8,7 +8,7 @@ import { Card } from "@/components/ui/card";
 import { AdCreativeMedia } from "@/components/ad-creative-media";
 import { ApifyEmptySearch } from "@/components/ads/apify-empty-search";
 import { AD_COUNTRIES } from "@/lib/countries";
-import { AdSearchMatchMode, adSearchRelevance, adSearchTokens } from "@/lib/ad-search";
+import { AdSearchMatchMode, adSearchDatabaseTerms, adSearchRelevance } from "@/lib/ad-search";
 
 export default async function AdsPage({ searchParams }: { searchParams: Promise<Record<string, string | undefined>> }) {
   const user = await requireUser();
@@ -26,13 +26,13 @@ export default async function AdsPage({ searchParams }: { searchParams: Promise<
   const displayableCreativeWhere: Prisma.AdCreativeWhereInput = { url: { not: "" } };
   const where: Prisma.AdWhereInput = { creatives: { some: displayableCreativeWhere } };
   if (q) {
-    const terms = matchMode === "EXACT_PHRASE" ? [q] : adSearchTokens(q);
-    where.AND = terms.map((term) => ({ OR: [
-      { primaryText: { contains: term, mode: "insensitive" } },
-      { headline: { contains: term, mode: "insensitive" } },
-      { description: { contains: term, mode: "insensitive" } },
-      { brandPage: { name: { contains: term, mode: "insensitive" } } }
-    ] }));
+    const terms = adSearchDatabaseTerms(q, matchMode);
+    where.AND = terms.map((variants) => ({ OR: variants.flatMap((term) => [
+      { primaryText: { contains: term, mode: "insensitive" as const } },
+      { headline: { contains: term, mode: "insensitive" as const } },
+      { description: { contains: term, mode: "insensitive" as const } },
+      { brandPage: { name: { contains: term, mode: "insensitive" as const } } }
+    ]) }));
   }
   if (niche) where.niche = { contains: niche, mode: "insensitive" };
   if (mediaType) where.mediaType = mediaType as any;
diff --git a/src/lib/ad-search.ts b/src/lib/ad-search.ts
index 6a6e7c4..fa7f266 100644
--- a/src/lib/ad-search.ts
+++ b/src/lib/ad-search.ts
@@ -22,6 +22,25 @@ export function adSearchTokens(query: string) {
   return [...new Set(normalizeAdSearchText(query).split(" ").filter(Boolean))];
 }
 
+function preserveAdSearchText(value: string | null | undefined) {
+  return (value || "")
+    .normalize("NFKC")
+    .toLocaleLowerCase("tr-TR")
+    .replace(/[^\p{L}\p{N}]+/gu, " ")
+    .trim()
+    .replace(/\s+/g, " ");
+}
+
+export function adSearchDatabaseTerms(query: string, mode: AdSearchMatchMode) {
+  const preserved = preserveAdSearchText(query);
+  const ascii = normalizeAdSearchText(query);
+  if (mode === "EXACT_PHRASE") return [[...new Set([preserved, ascii].filter(Boolean))]];
+
+  const preservedTokens = preserved.split(" ").filter(Boolean);
+  const asciiTokens = ascii.split(" ").filter(Boolean);
+  return asciiTokens.map((token, index) => [...new Set([preservedTokens[index], token].filter(Boolean))]);
+}
+
 function containsPhrase(text: string, phrase: string) {
   return Boolean(text && phrase && ` ${text} `.includes(` ${phrase} `));
 }
diff --git a/tests/core.test.ts b/tests/core.test.ts
index ed549bf..39a8e29 100644
--- a/tests/core.test.ts
+++ b/tests/core.test.ts
@@ -2,7 +2,7 @@ import assert from "node:assert/strict";
 import test from "node:test";
 import { MediaType } from "@prisma/client";
 import { actorInput, normalizeApifyAd, selectMediaRecordsForSearch } from "../src/lib/apify";
-import { adSearchRelevance, filterRelevantAds } from "../src/lib/ad-search";
+import { adSearchDatabaseTerms, adSearchRelevance, filterRelevantAds } from "../src/lib/ad-search";
 import { getFeatureLimit } from "../src/lib/plans";
 import { istemciIp, hizSiniriAsimi } from "../src/lib/rate-limit";
 import { stripePriceFor } from "../src/lib/stripe";
@@ -155,6 +155,11 @@ test("reklam araması tam kelimeyi eşleştirir ve alakasız alt dizeleri dışa
   assert.equal(adSearchRelevance({ primaryText: "Unrelated summer sale" }, "translate", "ALL_WORDS"), 0);
 });
 
+test("veritabanı araması Türkçe karakterli ve ASCII yazımları birlikte tarar", () => {
+  assert.deepEqual(adSearchDatabaseTerms("çeviri", "ALL_WORDS"), [["çeviri", "ceviri"]]);
+  assert.deepEqual(adSearchDatabaseTerms("hızlı çeviri", "EXACT_PHRASE"), [["hızlı çeviri", "hızlı ceviri"]]);
+});
+
 test("arama sonuçları ilgililiğe göre sıralanıp istenen sayıda kesilir", () => {
   const ads = [
     { headline: null, primaryText: "Use translate today", brandName: "Other" },