import 'dart:async';
import 'package:flutter/material.dart';
import 'package:space_traders/models/ship_model.dart';
import 'package:space_traders/providers/ship_provider.dart';

class ShipPage extends StatefulWidget {
  final ShipModel ship;

  ShipPage({required this.ship});

  @override
  _ShipPageState createState() => _ShipPageState();
}

class _ShipPageState extends State<ShipPage> {
    ShipModel? ship;
    Timer? _timer;
    Timer? _timermin;
    bool isButtonEnabled = true;

    @override
    void initState() {
        super.initState();
        _startTimer();
        ship = widget.ship;
    }

    @override
    void dispose() {
        _stopTimer();
        super.dispose();
    }

    void _startTimer() {
        _timer = Timer.periodic(Duration(seconds: 5), (_) {
           setState(() {
               _fetchShipData();
            });
        });
    }

    Future<void> _fetchShipData() async {
        ShipModel refreshedShip = await ShipProvider.getShip(widget.ship.symbol!);
            setState(() {
                ship = refreshedShip;
           });
    }

    void _stopTimer() {
        _timer?.cancel();
        _timermin?.cancel();
    }

    ElevatedButton buildActionButton(String status) {
      String buttonText = '';
      VoidCallback? buttonAction;
    
      if (status == 'IN_ORBIT') {
        buttonText = 'Dock';
        buttonAction = () async {
          Nav newNav = await ShipProvider.dockShip(widget.ship.symbol!);
          ship?.nav = newNav;
        };
      } else if (status == 'DOCKED') {
        buttonText = 'Orbit';
        buttonAction = () async{
          Nav newNav = await ShipProvider.orbitShip(widget.ship.symbol!);
          ship?.nav = newNav;
        };
      } else {
        buttonText = '';
        buttonAction = null;
      }
    
      return ElevatedButton(
        onPressed: buttonAction,
        child: Text(buttonText),
      );
    }

    void _onButtonPressed() async {
         int duration;
         if (isButtonEnabled) {
           setState(() {
             isButtonEnabled = false;
           });

           duration = await ShipProvider.extract(widget.ship.symbol!);
           final disabledDuration = Duration(seconds: duration);

           _timermin = Timer(disabledDuration, () {
             setState(() {
               isButtonEnabled = true;
             });
           });
         }
    }     

    @override
    Widget build(BuildContext context) {
        return Scaffold(
            appBar: AppBar(
                title: Text('Ship Details'),
            ),
            body: Container(
                decoration: BoxDecoration(
                    color: Colors.grey[300],
                ),
                child: Padding(
                    padding: const EdgeInsets.all(16.0),
                    child: Column(
                        crossAxisAlignment: CrossAxisAlignment.stretch,
                        children: [ 
                        Card(
                            color: Colors.white,
                            child: Align(
                                alignment: Alignment.topLeft,
                                child: Column(
                                    crossAxisAlignment: CrossAxisAlignment.start,
                                    children: [
                                                Text(
                                                    'Name: ${ship?.symbol}',
                                                    style: TextStyle(
                                                        fontSize: 18,
                                                        fontWeight: FontWeight.bold,
                                                    ),
                                                ),
                                        Row(
                                            children: [
                                                Text('${ship?.nav?.status ?? 'N/A'}'),
                                                SizedBox(height: 32), 
                                                SizedBox(width: 32), 
                                                buildActionButton(ship?.nav?.status ?? ''),
                                            ],
                                        ),
                                        Row(
                                            children: [
                                                Text('Fuel: ${ship?.fuel?.current ?? 'N/A'} / ${ship?.fuel?.capacity ?? 'N/A'}'),
                                                SizedBox(height: 32), 
                                                SizedBox(width: 32), 
                                                ElevatedButton(
                                                  onPressed: () {
                                                  },
                                                  child: Text('Refuel'),
                                                ),
                                            ],
                                        ),
                                        Row(
                                            children: [
                                                Column(
                                                    children:[
                                                        Text('${ship?.nav?.waypointSymbol ?? 'N/A'}'),
                                                        Text('${ship?.nav?.route?.destination?.type ?? 'N/A'}'),
                                                    ],
                                                    ),
                                                SizedBox(height: 32), 
                                                SizedBox(width: 32), 
                                                ElevatedButton(
                                                    onPressed: () {
                                                    },
                                                    child: Text('Select Destination'),
                                                ),
                                                SizedBox(width: 32), 
                                                ElevatedButton(
                                                    onPressed: () {
                                                    },
                                                    child: Text('View System'),
                                                ),
                                            ],
                                        ),
                                          ],
                                        ),
                                      ),
                                    ),
                                    Card(
                                          color: Colors.white,
                                           child: Align(
                                             alignment: Alignment.topLeft,
                                             child: Column(
                                               crossAxisAlignment: CrossAxisAlignment.start,
                                               children: [
                                                   Row(
                                                     mainAxisAlignment: MainAxisAlignment.spaceBetween,
                                                     children: [
                                                       Text(
                                                       'Cargo: ${ship?.cargo?.units ?? 'N/A'} / ${ship?.cargo?.capacity ?? 'N/A'}',
                                                       style: TextStyle(
                                                         fontSize: 18,
                                                         fontWeight: FontWeight.bold,
                                                       ),
                                                     ),
                                                     //ElevatedButton(
                                                     //   onPressed: () {
                                                     //   },
                                                     //   child: Text('Markets'),
                                                     // ),
                                                     ],
                                                 ),
                                                 SizedBox(height: 10), 
                                                 Column(
                                                   crossAxisAlignment: CrossAxisAlignment.start,
                                                   children: ship?.cargo?.inventory?.map((item) {
                                                     return Column(
                                                       crossAxisAlignment: CrossAxisAlignment.start,
                                                       children: [
                                                         Text(
                                                           '${item.name ?? 'N/A'} - ${item.units ?? 'N/A'}',
                                                           style: TextStyle(
                                                             fontSize: 16,
                                                           ),
                                                         ),

                                                     ElevatedButton(
                                                        onPressed: () async {
                                                          Cargo newCargo = await ShipProvider.sell(widget.ship.symbol!, item.name!, item.units!);
                                                        },
                                                        child: Text('Sell'),
                                                      ),
                                                         Divider(),
                                                       ],
                                                     );
                                                   }).toList() ?? [],
                                                 ),
                                               ],
                                             ),
                                           ),
                                    ),
                                    Card(
                                      child: Column(
                                        crossAxisAlignment: CrossAxisAlignment.start,
                                        children: [
                                          Padding(
                                            padding: const EdgeInsets.all(8.0),
                                            child: Text(
                                              'Mining',
                                              style: TextStyle(
                                                fontWeight: FontWeight.bold,
                                                fontSize: 18,
                                              ),
                                            ),
                                          ),
                                          ElevatedButton(
                                            onPressed: isButtonEnabled ? _onButtonPressed : null,
                                            child: Text('Start Mining'),
                                          ),
                                        ],
                                      ),
                                    ),
                                  ],
                                ),
                              ),
                            ),
                          );
                         }
    }