import 'package:flutter/material.dart';
import 'package:insparkspokalen_ui/models/missionModel.dart';
import 'package:insparkspokalen_ui/services/missionService.dart';

class MissionAdminPage extends StatefulWidget {
  @override
  State<MissionAdminPage> createState() => _MissionAdminPageState();
}

class _MissionAdminPageState extends State<MissionAdminPage> {
  final MissionService _missionService = MissionService();
  List<MissionModel> challenges = [];
  bool isLoading = true;

  @override
  void initState() {
    super.initState();
    _loadMissions();
  }

  Future<void> _loadMissions() async {
    try {
      final missions = await _missionService.fetchMissions();
      setState(() {
        challenges = missions;
        isLoading = false;
      });
    } catch (e) {
      print('Fel vid hämtning av uppdrag: $e');
      setState(() {
        isLoading = false;
      });
    }
  }

  void _showAddChallengeDialog() {
    final titleController = TextEditingController();
    final descriptionController = TextEditingController();
    final pointsController = TextEditingController();
    DateTime? selectedDeadline;

    showDialog(
      context: context,
      builder: (context) => AlertDialog(
        backgroundColor: Color(0xFF2E2E2E),
        title: Text("Lägg till uppdrag", style: TextStyle(color: Colors.white)),
        content: SingleChildScrollView(
          child: Column(
            children: [
              TextField(
                controller: titleController,
                style: TextStyle(color: Colors.white),
                decoration: InputDecoration(
                  labelText: "Namn",
                  labelStyle: TextStyle(color: Colors.white),
                  enabledBorder: UnderlineInputBorder(
                    borderSide: BorderSide(color: Colors.white),
                  ),
                ),
              ),
              TextField(
                controller: descriptionController,
                style: TextStyle(color: Colors.white),
                decoration: InputDecoration(
                  labelText: "Beskrivning",
                  labelStyle: TextStyle(color: Colors.white),
                  enabledBorder: UnderlineInputBorder(
                    borderSide: BorderSide(color: Colors.white),
                  ),
                ),
              ),
              TextField(
                controller: pointsController,
                style: TextStyle(color: Colors.white),
                decoration: InputDecoration(
                  labelText: "Poäng",
                  labelStyle: TextStyle(color: Colors.white),
                  enabledBorder: UnderlineInputBorder(
                    borderSide: BorderSide(color: Colors.white),
                  ),
                ),
                keyboardType: TextInputType.number,
              ),
              SizedBox(height: 12),
              ElevatedButton(
                style: ElevatedButton.styleFrom(backgroundColor: Color(0xFFFEDF00)),
                child: Text(
                  selectedDeadline == null
                      ? "Välj deadline"
                      : selectedDeadline.toString().split(' ')[0],
                  style: TextStyle(color: Colors.black),
                ),
                onPressed: () async {
                  final picked = await showDatePicker(
                    context: context,
                    initialDate: DateTime.now(),
                    firstDate: DateTime.now(),
                    lastDate: DateTime.now().add(Duration(days: 365)),
                  );
                  if (picked != null) {
                    setState(() => selectedDeadline = picked);
                  }
                },
              ),
            ],
          ),
        ),
        actions: [
          TextButton(
            onPressed: () => Navigator.pop(context),
            child: Text("Avbryt", style: TextStyle(color: Colors.white)),
          ),
          ElevatedButton(
            style: ElevatedButton.styleFrom(backgroundColor: Colors.yellow),
            child: Text("Skapa", style: TextStyle(color: Colors.black)),
            onPressed: () async {
              if (titleController.text.isNotEmpty &&
                  descriptionController.text.isNotEmpty &&
                  pointsController.text.isNotEmpty &&
                  selectedDeadline != null) {
                final newMission = MissionModel(
                  name: titleController.text,
                  description: descriptionController.text,
                  points: int.parse(pointsController.text),
                  deadline: selectedDeadline!,
                );

                try {
                  await _missionService.addMission(newMission);
                  Navigator.pop(context);
                  await _loadMissions();
                } catch (e) {
                  print('Fel vid skapande: $e');
                  ScaffoldMessenger.of(context).showSnackBar(
                    SnackBar(content: Text('Kunde inte lägga till uppdrag')),
                  );
                }
              }
            },
          ),
        ],
      ),
    );
  }

  void _confirmDelete(MissionModel mission) async {
    final shouldDelete = await showDialog<bool>(
      context: context,
      builder: (context) => AlertDialog(
        title: Text("Ta bort uppdrag"),
        content: Text("Är du säker på att du vill ta bort uppdraget '${mission.name}'?"),
        actions: [
          TextButton(onPressed: () => Navigator.pop(context, false), child: Text("Avbryt")),
          ElevatedButton(
            onPressed: () => Navigator.pop(context, true),
            style: ElevatedButton.styleFrom(backgroundColor: Color (0xFF000000)),
            child: Text("Ta bort"),
          ),
        ],
      ),
    );

    if (shouldDelete == true) {
      try {
        await _missionService.deleteMission(mission.id!);
        await _loadMissions();
      } catch (e) {
        print('Fel vid borttagning: $e');
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text('Kunde inte ta bort uppdrag')),
        );
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.black,
      appBar: AppBar(
  backgroundColor: Colors.black,
  title: Text("Uppdrag", style: TextStyle(color: Colors.white)),
  iconTheme: IconThemeData(color: Colors.white),
  automaticallyImplyLeading: false, 
),
      body: isLoading
          ? Center(child: CircularProgressIndicator())
          : SingleChildScrollView(
              child: Padding(
                padding: const EdgeInsets.all(16.0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: challenges.map((challenge) {
                    return Padding(
                      padding: const EdgeInsets.symmetric(vertical: 8.0),
                      child: Card(
                        elevation: 4,
                        color: Color(0xFFFEDF00),
                        shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(12),
                        ),
                        child: Padding(
                          padding: const EdgeInsets.symmetric(vertical: 4.0),
                          child: ExpansionTile(
                            tilePadding: EdgeInsets.symmetric(horizontal: 16.0),
                            title: Text(
                              challenge.name,
                              style: TextStyle(
                                color: Colors.black,
                                fontWeight: FontWeight.bold,
                              ),
                            ),
                            subtitle: Column(
                              crossAxisAlignment: CrossAxisAlignment.start,
                              children: [
                                SizedBox(height: 4),
                                Text(
                                  "Deadline: ${challenge.deadline.toString().split(' ')[0]}",
                                  style: TextStyle(color: Colors.black87),
                                ),
                                Text(
                                  "Poäng: ${challenge.points}",
                                  style: TextStyle(color: Colors.black87),
                                ),
                              ],
                            ),
                            children: [
                              Padding(
                                padding: const EdgeInsets.all(16.0),
                                child: Column(
                                  crossAxisAlignment: CrossAxisAlignment.start,
                                  children: [
                                    Text("Beskrivning:", style: TextStyle(fontWeight: FontWeight.bold)),
                                    SizedBox(height: 4),
                                    Text(challenge.description),
                                    SizedBox(height: 12),
                                    ElevatedButton.icon(
                                      onPressed: () => _confirmDelete(challenge),
                                      icon: Icon(Icons.delete),
                                      label: Text("Ta bort"),
                                      style: ElevatedButton.styleFrom(backgroundColor: Colors.white),
                                    ),
                                  ],
                                ),
                              ),
                            ],
                          ),
                        ),
                      ),
                    );
                  }).toList(),
                ),
              ),
            ),
      floatingActionButton: FloatingActionButton(
        onPressed: _showAddChallengeDialog,
        backgroundColor: Color(0xFFFFFFFF),
        child: Icon(Icons.add, color: Colors.black),
      ),
    );
  }
}