Changed model to refrect actual content (DateTime, not String)

lib/models/train_data.dart

@@ -120,17 +120,17 @@ class StationArrDepTime {
     this.status,
   });
 
-  final String scheduleTime;
+  final DateTime scheduleTime;
   final StationArrDepTimeStatus? status;
 
   factory StationArrDepTime.fromJson(Map<String, dynamic> json) =>
       StationArrDepTime(
-        scheduleTime: json["scheduleTime"],
+        scheduleTime: DateTime.parse(json["scheduleTime"] as String),
         status: json["status"] == null ? null : StationArrDepTimeStatus.fromJson(json["status"]),
       );
 
   Map<String, dynamic> toJson() => {
-        "scheduleTime": scheduleTime,
+        "scheduleTime": scheduleTime.toIso8601String(),
         "status": status?.toJson(),
       };
 }

lib/pages/train_info_page/view_train/train_info_cupertino.dart

@@ -714,7 +714,7 @@ class DisplayTrainDestination extends StatelessWidget {
         Builder(
           builder: (context) {
             final arrival =
-                DateTime.parse(trainData.stations.last.arrival!.scheduleTime).toLocal();
+                trainData.stations.last.arrival!.scheduleTime.toLocal();
             final delay = trainData.stations.last.arrival!.status?.delay ?? 0;
             // final parts = arrival.split(':');
             // final arrivalDT = DateTime(DateTime.now().year, DateTime.now().month, DateTime.now().day, int.parse(parts[0]), int.parse(parts[1]));
@@ -827,9 +827,9 @@ class DisplayTrainRouteDuration extends StatelessWidget {
         Builder(
           builder: (context) {
             var duration =
-                DateTime.parse(trainData.stations.last.arrival!.scheduleTime)
+                trainData.stations.last.arrival!.scheduleTime
-                    .difference(DateTime.parse(
+                    .difference(
-                        trainData.stations.first.departure!.scheduleTime));
+                      trainData.stations.first.departure!.scheduleTime);
             var durationString = StringBuffer();
 
             bool firstWritten = false;

lib/pages/train_info_page/view_train/train_info_cupertino_DisplayTrainStation.dart

@@ -254,7 +254,7 @@ class ArrivalTime extends StatelessWidget {
     }
     else {
       final delay = station.arrival!.status?.delay ?? 0;
-      final time = DateTime.parse(station.arrival!.scheduleTime).toLocal();
+      final time = station.arrival!.scheduleTime.toLocal();
 
       if (delay == 0) {
         return Text("${time.hour.toString().padLeft(2, "0")}:${time.minute.toString().padLeft(2, "0")}");
@@ -387,7 +387,7 @@ class DepartureTime extends StatelessWidget {
     }
     else {
       final delay = station.departure!.status?.delay ?? 0;
-      final time = DateTime.parse(station.departure!.scheduleTime).toLocal();
+      final time = station.departure!.scheduleTime.toLocal();
 
       if (delay == 0) {
         return Text("${time.hour.toString().padLeft(2, "0")}:${time.minute.toString().padLeft(2, "0")}");

lib/pages/train_info_page/view_train/train_info_material.dart

@@ -506,7 +506,7 @@ class DisplayTrainDestination extends StatelessWidget {
               ),
               Builder(
                 builder: (context) {
-                  final arrival = DateTime.parse(destination.arrival!.scheduleTime).toLocal();
+                  final arrival = destination.arrival!.scheduleTime.toLocal();
                   final delay = trainData.stations.last.arrival!.status?.delay ?? 0;
                   final arrivalWithDelay = arrival.add(Duration(minutes: delay));
                   final arrivalWithDelayString = '${arrivalWithDelay.hour}:${arrivalWithDelay.minute.toString().padLeft(2, "0")}';
@@ -623,7 +623,7 @@ class DisplayTrainRouteDuration extends StatelessWidget {
               ),
               Builder(
                 builder: (context) {
-                  var duration = DateTime.parse(trainData.stations.last.arrival!.scheduleTime).difference(DateTime.parse(trainData.stations.first.departure!.scheduleTime));
+                  var duration = trainData.stations.last.arrival!.scheduleTime.difference(trainData.stations.first.departure!.scheduleTime);
                   var durationString = StringBuffer();
 
                   bool firstWritten = false;

lib/pages/train_info_page/view_train/train_info_material_DisplayTrainStation.dart

@@ -261,7 +261,7 @@ class ArrivalTime extends StatelessWidget {
     }
     else {
       final delay = station.arrival!.status?.delay ?? 0;
-      final time = DateTime.parse(station.arrival!.scheduleTime).toLocal();
+      final time = station.arrival!.scheduleTime.toLocal();
 
       if (delay == 0) {
         return Text("${time.hour.toString().padLeft(2, '0')}:${time.minute.toString().padLeft(2, '0')}");
@@ -396,7 +396,7 @@ class DepartureTime extends StatelessWidget {
     }
     else {
       final delay = station.departure!.status?.delay ?? 0;
-      final time = DateTime.parse(station.departure!.scheduleTime).toLocal();
+      final time = station.departure!.scheduleTime.toLocal();
 
       if (delay == 0) {
         return Text("${time.hour.toString().padLeft(2, '0')}:${time.minute.toString().padLeft(2, '0')}");