completed velocity integration

lib/screens/history/history_controller.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:qpay/http/http.dart';
+import 'package:qpay/models/api_response.dart';
 import 'package:qpay/models/pageable_model.dart';
 
 class HistoryModel {
@@ -17,17 +18,7 @@ class HistoryController extends ChangeNotifier {
 
   HistoryController(this.context);
 
-  void _showErrorSnackBar(String? message) {
-    ScaffoldMessenger.of(context).showSnackBar(
-      SnackBar(
-        content: Text(message.toString()),
-        behavior: SnackBarBehavior.floating,
-        backgroundColor: Colors.deepOrange,
-      ),
-    );
-  }
-
-  Future<void> getTransactions(Map<String, String> params) async {
+  Future<ApiResponse<List<Map<String, dynamic>>>> getTransactions(Map<String, String> params) async {
     model.isLoading = true;
     if (params['page'] == '0') {
       model.transactions = getFakeTransactions();
@@ -51,16 +42,19 @@ class HistoryController extends ChangeNotifier {
           model.pageableModel!.content
               .map((e) => e as Map<String, dynamic>)
               .toList();
-    } catch (e) {
-      logger.e(e);
-      _showErrorSnackBar(
-        "Problem fetching transactions, are you connected to the internet?",
-      );
-      model.errorMessage = e.toString();
-      model.transactions = [];
-    } finally {
+
       model.isLoading = false;
       notifyListeners();
+      return ApiResponse.success(List<Map<String, dynamic>>.from(model.transactions));
+    } catch (e) {
+      logger.e(e);
+      model.errorMessage = e.toString();
+      model.transactions = [];
+      model.isLoading = false;
+      notifyListeners();
+      return ApiResponse.failure(
+        "Problem fetching transactions, are you connected to the internet?",
+      );
     }
   }