/// Dialog pour enregistrer un paiement sur une adhésion
library paiement_adhesion_dialog;

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import '../../../../shared/constants/payment_method_assets.dart';
import '../../bloc/adhesions_bloc.dart';

class PaiementAdhesionDialog extends StatefulWidget {
  final String adhesionId;
  final double montantRestant;
  final VoidCallback onPaid;

  const PaiementAdhesionDialog({
    super.key,
    required this.adhesionId,
    required this.montantRestant,
    required this.onPaid,
  });

  @override
  State<PaiementAdhesionDialog> createState() => _PaiementAdhesionDialogState();
}

class _PaiementAdhesionDialogState extends State<PaiementAdhesionDialog> {
  final _montantController = TextEditingController();
  final _refController = TextEditingController();
  String? _methode;
  bool _loading = false;

  @override
  void initState() {
    super.initState();
    _montantController.text = widget.montantRestant.toStringAsFixed(0);
  }

  @override
  void dispose() {
    _montantController.dispose();
    _refController.dispose();
    super.dispose();
  }

  List<DropdownMenuItem<String>> _buildPaymentMethodItems() {
    const codes = ['ESPECES', 'VIREMENT', 'WAVE_MONEY', 'ORANGE_MONEY', 'CHEQUE'];
    const labels = {'ESPECES': 'Espèces', 'VIREMENT': 'Virement', 'WAVE_MONEY': 'Wave Money', 'ORANGE_MONEY': 'Orange Money', 'CHEQUE': 'Chèque'};
    return codes.map((code) {
      final label = labels[code] ?? code;
      return DropdownMenuItem<String>(
        value: code,
        child: Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            PaymentMethodIcon(paymentMethodCode: code, width: 24, height: 24),
            const SizedBox(width: 12),
            Text(label),
          ],
        ),
      );
    }).toList();
  }

  void _submit() {
    final montant = double.tryParse(_montantController.text.replaceAll(',', '.'));
    if (montant == null || montant <= 0) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Montant invalide')),
      );
      return;
    }
    if (montant > widget.montantRestant) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Le montant ne peut pas dépasser le restant dû')),
      );
      return;
    }
    setState(() => _loading = true);
    context.read<AdhesionsBloc>().add(
          EnregistrerPaiementAdhesion(
            widget.adhesionId,
            montantPaye: montant,
            methodePaiement: _methode,
            referencePaiement: _refController.text.trim().isEmpty
                ? null
                : _refController.text.trim(),
          ),
        );
    widget.onPaid();
    if (mounted) {
      setState(() => _loading = false);
      Navigator.of(context).pop();
    }
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: const Text('Enregistrer un paiement'),
      content: SingleChildScrollView(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text('Restant dû : ${widget.montantRestant.toStringAsFixed(0)} FCFA'),
            const SizedBox(height: 16),
            TextField(
              controller: _montantController,
              decoration: const InputDecoration(
                labelText: 'Montant payé (FCFA)',
                border: OutlineInputBorder(),
              ),
              keyboardType: const TextInputType.numberWithOptions(decimal: true),
              enabled: !_loading,
            ),
            const SizedBox(height: 12),
            DropdownButtonFormField<String>(
              value: _methode,
              decoration: const InputDecoration(
                labelText: 'Méthode de paiement',
                border: OutlineInputBorder(),
              ),
              items: _buildPaymentMethodItems(),
              onChanged: _loading ? null : (v) => setState(() => _methode = v),
            ),
            const SizedBox(height: 12),
            TextField(
              controller: _refController,
              decoration: const InputDecoration(
                labelText: 'Référence (optionnel)',
                border: OutlineInputBorder(),
              ),
              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('Enregistrer'),
        ),
      ],
    );
  }
}