Fix duplicate key in search suggestions

app/src/main/kotlin/com/hippo/ehviewer/dao/SearchDao.kt

@@ -12,11 +12,11 @@ interface SearchDao {
     @Query("DELETE FROM suggestions WHERE `query` = :query")
     suspend fun deleteQuery(query: String)
 
-    @Query("SELECT * FROM suggestions WHERE `query` LIKE :prefix || '%' ORDER BY date DESC LIMIT :limit")
-    suspend fun rawSuggestions(prefix: String, limit: Int): Array<Search>
+    @Query("SELECT DISTINCT `query` FROM suggestions WHERE `query` LIKE :prefix || '%' ORDER BY date DESC LIMIT :limit")
+    suspend fun rawSuggestions(prefix: String, limit: Int): List<String>
 
-    @Query("SELECT * FROM suggestions ORDER BY date DESC LIMIT :limit")
-    suspend fun list(limit: Int): Array<Search>
+    @Query("SELECT DISTINCT `query` FROM suggestions ORDER BY date DESC LIMIT :limit")
+    suspend fun list(limit: Int): List<String>
 
     @Insert
     suspend fun insert(search: Search)

app/src/main/kotlin/com/hippo/ehviewer/ui/screen/SearchBarScreen.kt

@@ -97,7 +97,7 @@ abstract class Suggestion {
 }
 
 suspend fun SearchDao.suggestions(prefix: String, limit: Int) =
-    (if (prefix.isBlank()) list(limit) else rawSuggestions(prefix, limit)).map { it.query }
+    (if (prefix.isBlank()) list(limit) else rawSuggestions(prefix, limit))
 
 @Composable
 fun SearchBarScreen(