add data service and homepage data retrieval

lib/components/pages/dashboard.dart

@@ -0,0 +1,58 @@
+import 'package:flutter/material.dart';
+import 'package:mileograph_flutter/services/authservice.dart';
+import 'package:mileograph_flutter/services/dataService.dart';
+
+import 'package:provider/provider.dart';
+
+class Dashboard extends StatelessWidget {
+  const Dashboard({super.key});
+  @override
+  Widget build(BuildContext context) {
+    final data = context.watch<DataService>();
+    final auth = context.watch<AuthService>();
+    return DashboardHeader(auth: auth, data: data);
+  }
+}
+
+class DashboardHeader extends StatelessWidget {
+  const DashboardHeader({super.key, required this.auth, required this.data});
+
+  final AuthService auth;
+  final DataService data;
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        Column(
+          children: [
+            Text(
+              auth.fullName ?? "Unknown",
+              style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
+            ),
+            Text.rich(
+              TextSpan(
+                children: [
+                  TextSpan(text: "Total Mileage: "),
+                  TextSpan(
+                    text: data.homepageStats?.totalMileage.toString() ?? "0",
+                  ),
+                ],
+              ),
+            ),
+            Text.rich(
+              TextSpan(
+                children: [
+                  TextSpan(text: DateTime.now().year.toString()),
+                  TextSpan(text: " Mileage: "),
+                  TextSpan(text: data.getMileageForCurrentYear().toString()),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ],
+    );
+  }
+}