feat: add rows count (broken), fix: bug with low stock items

lib/database/app_database.dart

@@ -2,7 +2,6 @@ import 'package:drift/drift.dart';
 import 'package:drift_flutter/drift_flutter.dart';
 import 'package:path_provider/path_provider.dart';
 
-
 part 'app_database.g.dart';
 
 @DataClassName('ProductRow')
@@ -111,6 +110,8 @@ class AppSettingsTable extends Table {
 
   TextColumn get language => text().withDefault(const Constant('system'))();
 
+  IntColumn get barGridRows => integer().withDefault(const Constant(3))();
+
   @override
   Set<Column> get primaryKey => {id};
 }
@@ -131,7 +132,7 @@ class AppDatabase extends _$AppDatabase {
   AppDatabase([QueryExecutor? executor]) : super(executor ?? _openConnection());
 
   @override
-  int get schemaVersion => 7;
+  int get schemaVersion => 8;
 
   @override
   MigrationStrategy get migration {
@@ -140,6 +141,14 @@ class AppDatabase extends _$AppDatabase {
         await migrator.createAll();
       },
       onUpgrade: (migrator, from, to) async {
+        Future<bool> hasSettingsColumn(String columnName) async {
+          final columns = await migrator.database
+              .customSelect('PRAGMA table_info(app_settings)')
+              .get();
+
+          return columns.any((column) => column.data['name'] == columnName);
+        }
+
         if (from < 2) {
           await migrator.createTable(barTabs);
           await migrator.createTable(tabItems);
@@ -162,9 +171,16 @@ class AppDatabase extends _$AppDatabase {
           await migrator.addColumn(closedTabs, closedTabs.paymentMethod);
         }
 
-        if (from < 7) {
+        if (from < 7 && !await hasSettingsColumn('language')) {
           await migrator.addColumn(appSettingsTable, appSettingsTable.language);
         }
+
+        if (from < 8 && !await hasSettingsColumn('bar_grid_rows')) {
+          await migrator.addColumn(
+            appSettingsTable,
+            appSettingsTable.barGridRows,
+          );
+        }
       },
     );
   }