Used Provider-Package to encapsulate state management

lib/pages/flood_station_page.dart

@@ -1,22 +1,37 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
 
 import '../Widgets/reading_graph.dart';
 import '../model/flood_station.dart';
 import '../model/reading.dart';
 import '../services/api.dart';
+import '../services/flood_station_provider.dart';
+
+class FloodStationPage extends StatefulWidget {
+  const FloodStationPage({super.key});
+  static const String routeName = '/station';
+
+  @override
+  State<FloodStationPage> createState() => _FloodStationPageState();
+}
+
+class _FloodStationPageState extends State<FloodStationPage> {
+  @override
+  void deactivate() {
+    context.read<FloodStationProvider>().selectedStation = null;
+    super.deactivate();
+  }
 
-class FloodStationPage extends StatelessWidget {
-  const FloodStationPage({super.key, required FloodStation floodStation})
-      : _floodStation = floodStation;
-  final FloodStation _floodStation;
   @override
   Widget build(BuildContext context) {
+    final FloodStation? station =
+        context.read<FloodStationProvider>().selectedStation;
     return Scaffold(
       appBar: AppBar(
-        title: Text(_floodStation.label),
+        title: Text(station?.label ?? ''),
       ),
       body: FutureBuilder<List<Reading>>(
-          future: Api.fetchReadingsFromStation(_floodStation.id),
+          future: Api.fetchReadingsFromStation(station?.id ?? ''),
           builder: (context, snapshot) {
             if (snapshot.hasData) {
               if (snapshot.data!.isEmpty) {