/// Dialog de création d'une demande d'adhésion
library create_adhesion_dialog;

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:get_it/get_it.dart';
import '../../../../core/utils/logger.dart';
import '../../../../shared/design_system/unionflow_design_system.dart';
import '../../bloc/adhesions_bloc.dart';
import '../../data/models/adhesion_model.dart';
import '../../../organizations/data/models/organization_model.dart';
import '../../../organizations/domain/repositories/organization_repository.dart';
import '../../../members/data/models/membre_complete_model.dart';
import '../../../profile/domain/repositories/profile_repository.dart';

class CreateAdhesionDialog extends StatefulWidget {
  final VoidCallback onCreated;

  const CreateAdhesionDialog({super.key, required this.onCreated});

  @override
  State<CreateAdhesionDialog> createState() => _CreateAdhesionDialogState();
}

class _CreateAdhesionDialogState extends State<CreateAdhesionDialog> {
  final _fraisController = TextEditingController();
  String? _organisationId;
  bool _loading = false;
  bool _isInitLoading = true;
  List<OrganizationModel> _organisations = [];
  MembreCompletModel? _me;

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

  Future<void> _loadInitialData() async {
    try {
      final user = await GetIt.instance<IProfileRepository>().getMe();
      final orgRepo = GetIt.instance<IOrganizationRepository>();
      final list = await orgRepo.getOrganizations(page: 0, size: 100);
      
      if (mounted) {
        setState(() {
          _me = user;
          _organisations = list;
          _isInitLoading = false;
        });
      }
    } catch (e, st) {
      AppLogger.error('CreateAdhesionDialog: chargement profil/organisations échoué', error: e, stackTrace: st);
      if (mounted) {
        setState(() {
          _isInitLoading = false;
        });
        ScaffoldMessenger.of(context).showSnackBar(
          const SnackBar(content: Text('Impossible de charger le profil ou les organisations. Réessayez.')),
        );
      }
    }
  }

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

  void _submit() {
    if (_me == null) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Profil non chargé, veuillez réessayer')),
      );
      return;
    }
    if (_organisationId == null) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Veuillez sélectionner un membre et une organisation')),
      );
      return;
    }
    final frais = double.tryParse(_fraisController.text.replaceAll(',', '.'));
    if (frais == null || frais <= 0) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Frais d\'adhésion invalides')),
      );
      return;
    }
    setState(() => _loading = true);
    final adhesion = AdhesionModel(
      membreId: _me!.id,
      organisationId: _organisationId,
      fraisAdhesion: frais,
      codeDevise: 'XOF',
      dateDemande: DateTime.now(),
    );
    context.read<AdhesionsBloc>().add(CreateAdhesion(adhesion));
    widget.onCreated();
    if (mounted) {
      setState(() => _loading = false);
      Navigator.of(context).pop();
    }
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: const Text('Nouvelle demande d\'adhésion'),
      content: SingleChildScrollView(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            if (_isInitLoading)
              const CircularProgressIndicator()
            else if (_me != null)
              TextFormField(
                initialValue: '${_me!.prenom} ${_me!.nom}',
                decoration: const InputDecoration(
                  labelText: 'Membre',
                  border: OutlineInputBorder(),
                  prefixIcon: Icon(Icons.person),
                ),
                enabled: false,
              )
            else
              const Text('Impossible de récupérer votre profil', style: TextStyle(color: AppColors.error)),
            const SizedBox(height: 16),
            DropdownButtonFormField<String>(
              value: _organisationId,
              isExpanded: true,
              decoration: const InputDecoration(
                labelText: 'Organisation',
                border: OutlineInputBorder(),
              ),
              items: _organisations
                  .map((o) => DropdownMenuItem<String>(
                        value: o.id,
                        child: Text(o.nom, overflow: TextOverflow.ellipsis, maxLines: 1),
                      ))
                  .toList(),
              onChanged: _loading ? null : (v) => setState(() => _organisationId = v),
            ),
            const SizedBox(height: 16),
            TextField(
              controller: _fraisController,
              decoration: const InputDecoration(
                labelText: 'Frais d\'adhésion (FCFA)',
                border: OutlineInputBorder(),
              ),
              keyboardType: const TextInputType.numberWithOptions(decimal: true),
              enabled: !_loading,
            ),
          ],
        ),
      ),
      actions: [
        TextButton(
          onPressed: _loading ? null : () => Navigator.of(context).pop(),
          child: const Text('Annuler'),
        ),
        FilledButton(
          onPressed: _loading ? null : _submit,
          child: _loading
              ? const SizedBox(
                  width: 20,
                  height: 20,
                  child: CircularProgressIndicator(strokeWidth: 2),
                )
              : const Text('Créer'),
        ),
      ],
    );
  }
}