From f57cc68ef32fa7f3f92ed79449d692bfb5dbe8b1 Mon Sep 17 00:00:00 2001
From: h7x4 <h7x4@nani.wtf>
Date: Tue, 24 Feb 2026 15:08:19 +0900
Subject: [PATCH] search/radicals: deduplicate input radicals before search

---
 lib/search/radical_search.dart | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/lib/search/radical_search.dart b/lib/search/radical_search.dart
index 15cab3a..0f1cf00 100644
--- a/lib/search/radical_search.dart
+++ b/lib/search/radical_search.dart
@@ -7,6 +7,8 @@ Future<List<String>> searchRemainingRadicalsWithDbConnection(
   DatabaseExecutor connection,
   List<String> radicals,
 ) async {
+  final distinctRadicals = radicals.toSet();
+
   final queryResult = await connection.rawQuery(
     '''
       SELECT DISTINCT "radical"
@@ -14,12 +16,12 @@ Future<List<String>> searchRemainingRadicalsWithDbConnection(
       WHERE "kanji" IN (
         SELECT "kanji"
         FROM "${RADKFILETableNames.radkfile}"
-        WHERE "radical" IN (${List.filled(radicals.length, '?').join(',')})
+        WHERE "radical" IN (${List.filled(distinctRadicals.length, '?').join(',')})
         GROUP BY "kanji"
         HAVING COUNT(DISTINCT "radical") = ?
       )
     ''',
-    [...radicals, radicals.length],
+    [...distinctRadicals, distinctRadicals.length],
   );
 
   final remainingRadicals = queryResult
@@ -33,15 +35,17 @@ Future<List<String>> searchKanjiByRadicalsWithDbConnection(
   DatabaseExecutor connection,
   List<String> radicals,
 ) async {
+  final distinctRadicals = radicals.toSet();
+
   final queryResult = await connection.rawQuery(
     '''
       SELECT "kanji"
       FROM "${RADKFILETableNames.radkfile}"
-      WHERE "radical" IN (${List.filled(radicals.length, '?').join(',')})
+      WHERE "radical" IN (${List.filled(distinctRadicals.length, '?').join(',')})
       GROUP BY "kanji"
       HAVING COUNT(DISTINCT "radical") = ?
     ''',
-    [...radicals, radicals.length],
+    [...distinctRadicals, distinctRadicals.length],
   );
 
   final kanji = queryResult.map((row) => row['kanji'] as String).toList();