feat: implement route creating from segment and in UI

lib/main.dart

@@ -222,7 +222,12 @@ class StationList extends StatelessWidget {
 
 class ChooseDeparturePage extends StatefulWidget {
   final Station startStation;
-  const ChooseDeparturePage({super.key, required this.startStation});
+  final int? journeyId;
+  const ChooseDeparturePage({
+    super.key,
+    this.journeyId,
+    required this.startStation,
+  });
 
   @override
   State<ChooseDeparturePage> createState() => _ChooseDeparturePageState();
@@ -231,6 +236,7 @@ class ChooseDeparturePage extends StatefulWidget {
 class _ChooseDeparturePageState extends State<ChooseDeparturePage> {
   List<Departure> departureList = [];
   Departure? _selectedDeparture;
+
   void loadDepartures(Station startStation) async {
     departureList = await ApiHandler.departures(startStation.id);
     setState(() {});
@@ -281,7 +287,10 @@ class _ChooseDeparturePageState extends State<ChooseDeparturePage> {
     Navigator.push(
       context,
       MaterialPageRoute(
-        builder: (context) => ChooseArrivalPage(departure: departure),
+        builder: (context) => ChooseArrivalPage(
+          departure: departure,
+          journeyId: widget.journeyId,
+        ),
       ),
     );
   }
@@ -313,8 +322,11 @@ class DepartureList extends StatelessWidget {
 
 class ChooseArrivalPage extends StatefulWidget {
   final Departure departure;
+  final int? journeyId;
+
   const ChooseArrivalPage({
     super.key,
+    this.journeyId,
     required this.departure,
   });
 
@@ -323,11 +335,11 @@ class ChooseArrivalPage extends StatefulWidget {
 }
 
 class _ChooseArrivalPageState extends State<ChooseArrivalPage> {
-  List<Departure> departureList = [];
+  List<Departure> arrivalList = [];
   Departure? _selectedDeparture;
 
   void loadArrivals(String ref) async {
-    departureList = await ApiHandler.tripDetail(
+    arrivalList = await ApiHandler.tripDetail(
       ref,
       startStationId: widget.departure.stationId,
     );
@@ -352,7 +364,8 @@ class _ChooseArrivalPageState extends State<ChooseArrivalPage> {
               child: SizedBox(
                 height: 400,
                 child: ArrivalList(
-                  departureList: departureList,
+                  departure: widget.departure,
+                  arrivalList: arrivalList,
                   onTapped: _handleArrivalTapped,
                 ),
               ),
@@ -372,26 +385,46 @@ class _ChooseArrivalPageState extends State<ChooseArrivalPage> {
     );
   }
 
-  void _handleArrivalTapped(Departure departure) async {
+  void _handleArrivalTapped(Departure departure, Departure arrival) async {
     // setState(() {
     //   _selectedDeparture = departure;
     // });
-    Station startStation = await Station.dbGet(departure.stationId);
+    departure.dbInsert;
+    arrival.dbInsert;
+    Segment newSegment = await Segment.fromDepartures(departure, arrival);
+    Station startStation = await Station.dbGet(arrival.stationId);
+    int journeyId;
+    if (widget.journeyId == null) {
+      Journey journey = await Journey.fromSegment(newSegment);
+      journeyId = journey.id as int;
+    } else {
+      Segment segment = await newSegment;
+      Journey.dbAppendJourneySegment(
+        widget.journeyId as int,
+        segment.id as int,
+      );
+      journeyId = widget.journeyId as int;
+    }
     Navigator.push(
       context,
       MaterialPageRoute(
-        builder: (context) => ChooseDeparturePage(startStation: startStation),
+        builder: (context) => ChooseDeparturePage(
+          startStation: startStation,
+          journeyId: journeyId,
+        ),
       ),
     );
   }
 }
 
 class ArrivalList extends StatelessWidget {
-  final List<Departure> departureList;
-  final ValueChanged<Departure> onTapped;
+  final Departure departure;
+  final List<Departure> arrivalList;
+  final Function onTapped;
 
   const ArrivalList({
-    required this.departureList,
+    required this.departure,
+    required this.arrivalList,
     required this.onTapped,
   });
 
@@ -399,11 +432,11 @@ class ArrivalList extends StatelessWidget {
   Widget build(BuildContext context) {
     return ListView(
       children: [
-        for (Departure departure in departureList)
+        for (Departure arrival in arrivalList)
           ListTile(
-            title: Text(departure.stationName),
-            subtitle: Text(departure.arrivalTime.toString()),
-            onTap: () => onTapped(departure),
+            title: Text(arrival.stationName),
+            subtitle: Text(arrival.arrivalTime.toString()),
+            onTap: () => onTapped(departure, arrival),
           ),
       ],
     );