anyway/frontend/lib/modules/new_trip_button.dart

import 'package:anyway/layout.dart';
import 'package:anyway/structs/preferences.dart';
import 'package:anyway/structs/trip.dart';
import 'package:anyway/utils/fetch_trip.dart';
import 'package:auto_size_text/auto_size_text.dart';
import 'package:flutter/material.dart';


class NewTripButton extends StatefulWidget {
  final Trip trip;

  const NewTripButton({required this.trip});

  @override
  State<NewTripButton> createState() => _NewTripButtonState();
}

class _NewTripButtonState extends State<NewTripButton> {

  @override
  Widget build(BuildContext context) {
    return ListenableBuilder(
      listenable: widget.trip,
      builder: (BuildContext context, Widget? child) {
        if (widget.trip.landmarks.isEmpty){
          return Container();
        }
        return FloatingActionButton.extended(
          onPressed: () async {
            Future<UserPreferences> preferences = loadUserPreferences();
            Trip trip = widget.trip;
            fetchTrip(trip, preferences);
            Navigator.of(context).push(
              MaterialPageRoute(
                builder: (context) => BasePage(mainScreen: "map", trip: trip)
              )
            );
          },
          icon: Icon(Icons.add),
          label: FutureBuilder(
            future: widget.trip.cityName,
            builder: (context, snapshot) {
              if (snapshot.connectionState == ConnectionState.done) {
                return AutoSizeText(
                  'New trip to ${snapshot.data.toString()}',
                  style: TextStyle(fontSize: 18),
                  maxLines: 2,
                );
              } else {
                return AutoSizeText(
                  'New trip to ...',
                  style: TextStyle(fontSize: 18),
                  maxLines: 2,
                );
              }
            },
          )
        );
        
      } 
    );
  }
}