simple dbhelper with Isar

lib/main.dart

@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
 
 import 'pages/dashboard_page.dart';
+import 'services/dbhelper.dart';
 
-void main() {
+void main() async {
+  await DbHelper.init();
   runApp(const MyApp());
 }
 

lib/models/todo.dart

@@ -1,11 +1,18 @@
+import 'package:isar/isar.dart';
+
+part 'todo.g.dart';
+
+@collection
 class Todo {
+  final int id;
   final String title;
   final String description;
   final DateTime createdAt;
 
   Todo({
+    required this.id,
     required this.title,
-    required this.description,
-    required this.createdAt,
-  });
+    this.description = '',
+    DateTime? createdAt,
+  }) : createdAt = createdAt ?? DateTime.now();
 }

lib/services/dbhelper.dart

@@ -1 +1,16 @@
-class DbHelper {}
+import 'package:path_provider/path_provider.dart';
+import 'package:isar/isar.dart';
+
+import '../models/todo.dart';
+
+class DbHelper {
+  static late Isar _isar;
+
+  static init() async {
+    final dir = await getApplicationDocumentsDirectory();
+    _isar = Isar.open(
+      schemas: [TodoSchema],
+      directory: dir.path,
+    );
+  }
+}