import 'package:flutter/material.dart';
import 'package:insparkspokalen_ui/models/informationModel.dart';
import 'package:insparkspokalen_ui/services/backend/informationService.dart';


class AdminInformationPage extends StatefulWidget {
  const AdminInformationPage({super.key});


  @override
  State<AdminInformationPage> createState() => _AdminInformationPageState();
}


class _AdminInformationPageState extends State<AdminInformationPage> {
  List<InformationModel> informationList = [];


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


  Future<void> _loadInformation() async {
    try {
      final info = await InformationService().fetchInformation();
      info.sort((a, b) => a.createdAt.compareTo(b.createdAt));
      setState(() {
        informationList = info;
      });
    } catch (e) {
      print("Fel vid inläsning av information: $e");
    }
  }


  void _deleteInformation(InformationModel info) async {
    try {
      await InformationService().deleteInformation(info);
      setState(() => informationList.remove(info));
    } catch (e) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text("Kunde inte ta bort information")),
      );
    }
  }


  void _showAddDialog() {
    final titleController = TextEditingController();
    final contentController = TextEditingController();


    showDialog(
      context: context,
      builder: (context) => AlertDialog(
        title: const Text("Lägg till information"),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            TextField(
              controller: titleController,
              decoration: const InputDecoration(labelText: "Titel"),
            ),
            TextField(
              controller: contentController,
              decoration: const InputDecoration(labelText: "Innehåll"),
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Navigator.of(context).pop(),
            child: const Text("Avbryt"),
          ),
          ElevatedButton(
            onPressed: () async {
              final newInfo = InformationModel(
                title: titleController.text.trim(),
                content: contentController.text.trim(),
                author: 'Admin',
                createdAt: DateTime.now(),
              );
              try {
                await InformationService().createInformation(newInfo);
                Navigator.of(context).pop();
                _loadInformation();
              } catch (e) {
                ScaffoldMessenger.of(context).showSnackBar(
                  const SnackBar(
                    content: Text("Kunde inte skapa information"),
                  ),
                );
              }
            },
            child: const Text("Lägg till"),
          ),
        ],
      ),
    );
  }


  void _confirmDelete(BuildContext context, InformationModel info) {
    showDialog(
      context: context,
      builder: (context) => AlertDialog(
        title: const Text("Ta bort inlägg"),
        content: const Text("Är du säker på att du vill ta bort detta inlägg?"),
        actions: [
          TextButton(
            onPressed: () => Navigator.of(context).pop(),
            child: const Text("Avbryt"),
          ),
          TextButton(
            onPressed: () {
              Navigator.of(context).pop();
              _deleteInformation(info);
            },
            child: const Text(
              "Ta bort",
              style: TextStyle(color: Colors.red),
            ),
          ),
        ],
      ),
    );
  }


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: const Color(0xFF2E2E2E),
      appBar: AppBar(
        title: const Text("Admin - Information"),
        backgroundColor: const Color(0xFF2E2E2E),
        foregroundColor: Color(0xFFDAA520),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _showAddDialog,
        backgroundColor: Colors.white,
        foregroundColor: Colors.black,
        child: const Icon(Icons.add),
      ),
      body: informationList.isEmpty
          ? const Center(child: CircularProgressIndicator(color: Color(0xFFDAA520)))
          : ListView.builder(
              itemCount: informationList.length,
              itemBuilder: (context, index) {
                final info = informationList[index];
                return Card(
                  color: Colors.white,
                  margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                  child: ListTile(
                    title: Text(
                      info.title,
                      style: const TextStyle(fontWeight: FontWeight.bold),
                    ),
                    subtitle: Text(info.content),
                    trailing: IconButton(
                      icon: const Icon(Icons.delete, color: Colors.red),
                      onPressed: () => _confirmDelete(context, info),
                    ),
                  ),
                );
              },
            ),
    );
  }
}