first commit

lib/data/datasources/auth_local_datasource.dart

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+import 'package:enaklo_pos/data/models/response/auth_response_model.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class AuthLocalDataSource {
+  Future<void> saveAuthData(AuthResponseModel authResponseModel) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString('auth_data', authResponseModel.toJson());
+  }
+
+  Future<void> removeAuthData() async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove('auth_data');
+  }
+
+  Future<AuthResponseModel> getAuthData() async {
+    final prefs = await SharedPreferences.getInstance();
+    final authData = prefs.getString('auth_data');
+
+    return AuthResponseModel.fromJson(authData!);
+  }
+
+  Future<bool> isAuthDataExists() async {
+    final prefs = await SharedPreferences.getInstance();
+    return prefs.containsKey('auth_data');
+  }
+
+  Future<void> saveMidtransServerKey(String serverKey) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString('server_key', serverKey);
+  }
+
+  //get midtrans server key
+  Future<String> getMitransServerKey() async {
+    final prefs = await SharedPreferences.getInstance();
+    final serverKey = prefs.getString('server_key');
+    return serverKey ?? '';
+  }
+
+  // save size receipt
+  Future<void> saveSizeReceipt(String sizeReceipt) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString('size_receipt', sizeReceipt);
+  }
+
+  // get size receipt
+  Future<String> getSizeReceipt() async {
+    final prefs = await SharedPreferences.getInstance();
+    final sizeReceipt = prefs.getString('size_receipt');
+    return sizeReceipt ?? '';
+  }
+}