import 'package:flutter/material.dart';
import '../../../../core/widgets/unified_card.dart';
import '../../../../core/theme/app_colors.dart';
import '../../../../core/theme/app_text_styles.dart';
import '../../domain/entities/notification.dart';

/// Widget de recherche et filtrage des notifications
class NotificationSearchWidget extends StatefulWidget {
  final Function(String) onSearchChanged;
  final Function({
    Set<TypeNotification>? types,
    Set<StatutNotification>? statuts,
  }) onFiltersChanged;
  final Set<TypeNotification> selectedTypes;
  final Set<StatutNotification> selectedStatuts;

  const NotificationSearchWidget({
    super.key,
    required this.onSearchChanged,
    required this.onFiltersChanged,
    required this.selectedTypes,
    required this.selectedStatuts,
  });

  @override
  State<NotificationSearchWidget> createState() => _NotificationSearchWidgetState();
}

class _NotificationSearchWidgetState extends State<NotificationSearchWidget> {
  final TextEditingController _searchController = TextEditingController();
  bool _showFilters = false;

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

  @override
  Widget build(BuildContext context) {
    return UnifiedCard(
      variant: UnifiedCardVariant.outlined,
      child: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            // Barre de recherche
            Row(
              children: [
                Expanded(
                  child: TextField(
                    controller: _searchController,
                    decoration: InputDecoration(
                      hintText: 'Rechercher dans les notifications...',
                      hintStyle: AppTextStyles.bodyMedium.copyWith(
                        color: AppColors.onSurface.withOpacity(0.6),
                      ),
                      prefixIcon: Icon(
                        Icons.search,
                        color: AppColors.onSurface.withOpacity(0.6),
                      ),
                      suffixIcon: _searchController.text.isNotEmpty
                          ? IconButton(
                              icon: const Icon(Icons.clear),
                              onPressed: () {
                                _searchController.clear();
                                widget.onSearchChanged('');
                              },
                            )
                          : null,
                      border: OutlineInputBorder(
                        borderRadius: BorderRadius.circular(12),
                        borderSide: BorderSide(
                          color: AppColors.outline.withOpacity(0.3),
                        ),
                      ),
                      enabledBorder: OutlineInputBorder(
                        borderRadius: BorderRadius.circular(12),
                        borderSide: BorderSide(
                          color: AppColors.outline.withOpacity(0.3),
                        ),
                      ),
                      focusedBorder: OutlineInputBorder(
                        borderRadius: BorderRadius.circular(12),
                        borderSide: BorderSide(
                          color: AppColors.primary,
                          width: 2,
                        ),
                      ),
                      contentPadding: const EdgeInsets.symmetric(
                        horizontal: 16,
                        vertical: 12,
                      ),
                    ),
                    onChanged: widget.onSearchChanged,
                  ),
                ),
                
                const SizedBox(width: 12),
                
                // Bouton de filtres
                IconButton(
                  onPressed: () {
                    setState(() {
                      _showFilters = !_showFilters;
                    });
                  },
                  icon: Icon(
                    Icons.filter_list,
                    color: _hasActiveFilters() 
                        ? AppColors.primary 
                        : AppColors.onSurface.withOpacity(0.6),
                  ),
                  style: IconButton.styleFrom(
                    backgroundColor: _hasActiveFilters() 
                        ? AppColors.primary.withOpacity(0.1)
                        : AppColors.surface,
                    shape: RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(12),
                      side: BorderSide(
                        color: _hasActiveFilters() 
                            ? AppColors.primary 
                            : AppColors.outline.withOpacity(0.3),
                      ),
                    ),
                  ),
                ),
              ],
            ),
            
            // Panneau de filtres (conditionnel)
            if (_showFilters) ...[
              const SizedBox(height: 16),
              _buildFiltersPanel(),
            ],
          ],
        ),
      ),
    );
  }

  Widget _buildFiltersPanel() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        // En-tête des filtres
        Row(
          children: [
            Text(
              'Filtres',
              style: AppTextStyles.titleSmall.copyWith(
                fontWeight: FontWeight.w600,
              ),
            ),
            
            const Spacer(),
            
            if (_hasActiveFilters())
              TextButton(
                onPressed: _clearAllFilters,
                child: Text(
                  'Tout effacer',
                  style: AppTextStyles.labelMedium.copyWith(
                    color: AppColors.primary,
                  ),
                ),
              ),
          ],
        ),
        
        const SizedBox(height: 12),
        
        // Filtres par type
        Text(
          'Types de notification',
          style: AppTextStyles.labelLarge.copyWith(
            fontWeight: FontWeight.w500,
          ),
        ),
        
        const SizedBox(height: 8),
        
        Wrap(
          spacing: 8,
          runSpacing: 8,
          children: _getPopularTypes()
              .map((type) => _buildTypeChip(type))
              .toList(),
        ),
        
        const SizedBox(height: 16),
        
        // Filtres par statut
        Text(
          'Statuts',
          style: AppTextStyles.labelLarge.copyWith(
            fontWeight: FontWeight.w500,
          ),
        ),
        
        const SizedBox(height: 8),
        
        Wrap(
          spacing: 8,
          runSpacing: 8,
          children: _getPopularStatuts()
              .map((statut) => _buildStatutChip(statut))
              .toList(),
        ),
        
        const SizedBox(height: 16),
        
        // Boutons d'action
        Row(
          children: [
            Expanded(
              child: OutlinedButton(
                onPressed: () {
                  setState(() {
                    _showFilters = false;
                  });
                },
                child: const Text('Fermer'),
              ),
            ),
            
            const SizedBox(width: 12),
            
            Expanded(
              child: ElevatedButton(
                onPressed: () {
                  setState(() {
                    _showFilters = false;
                  });
                  // Les filtres sont déjà appliqués en temps réel
                },
                child: const Text('Appliquer'),
              ),
            ),
          ],
        ),
      ],
    );
  }

  Widget _buildTypeChip(TypeNotification type) {
    final isSelected = widget.selectedTypes.contains(type);
    
    return FilterChip(
      label: Text(
        type.libelle,
        style: AppTextStyles.labelMedium.copyWith(
          color: isSelected ? AppColors.onPrimary : AppColors.onSurface,
        ),
      ),
      selected: isSelected,
      onSelected: (selected) {
        final newTypes = Set<TypeNotification>.from(widget.selectedTypes);
        if (selected) {
          newTypes.add(type);
        } else {
          newTypes.remove(type);
        }
        widget.onFiltersChanged(types: newTypes);
      },
      selectedColor: AppColors.primary,
      backgroundColor: AppColors.surface,
      side: BorderSide(
        color: isSelected 
            ? AppColors.primary 
            : AppColors.outline.withOpacity(0.3),
      ),
      avatar: isSelected 
          ? null 
          : Icon(
              _getTypeIcon(type),
              size: 16,
              color: _getTypeColor(type),
            ),
    );
  }

  Widget _buildStatutChip(StatutNotification statut) {
    final isSelected = widget.selectedStatuts.contains(statut);
    
    return FilterChip(
      label: Text(
        statut.libelle,
        style: AppTextStyles.labelMedium.copyWith(
          color: isSelected ? AppColors.onPrimary : AppColors.onSurface,
        ),
      ),
      selected: isSelected,
      onSelected: (selected) {
        final newStatuts = Set<StatutNotification>.from(widget.selectedStatuts);
        if (selected) {
          newStatuts.add(statut);
        } else {
          newStatuts.remove(statut);
        }
        widget.onFiltersChanged(statuts: newStatuts);
      },
      selectedColor: AppColors.primary,
      backgroundColor: AppColors.surface,
      side: BorderSide(
        color: isSelected 
            ? AppColors.primary 
            : AppColors.outline.withOpacity(0.3),
      ),
      avatar: isSelected 
          ? null 
          : Container(
              width: 8,
              height: 8,
              decoration: BoxDecoration(
                color: _getStatutColor(statut),
                shape: BoxShape.circle,
              ),
            ),
    );
  }

  List<TypeNotification> _getPopularTypes() {
    return [
      TypeNotification.nouvelEvenement,
      TypeNotification.cotisationDue,
      TypeNotification.nouvelleDemandeAide,
      TypeNotification.nouveauMembre,
      TypeNotification.annonceGenerale,
      TypeNotification.messagePrive,
    ];
  }

  List<StatutNotification> _getPopularStatuts() {
    return [
      StatutNotification.nonLue,
      StatutNotification.lue,
      StatutNotification.marqueeImportante,
      StatutNotification.archivee,
    ];
  }

  IconData _getTypeIcon(TypeNotification type) {
    switch (type.icone) {
      case 'event':
        return Icons.event;
      case 'payment':
        return Icons.payment;
      case 'help':
        return Icons.help;
      case 'person_add':
        return Icons.person_add;
      case 'campaign':
        return Icons.campaign;
      case 'mail':
        return Icons.mail;
      default:
        return Icons.notifications;
    }
  }

  Color _getTypeColor(TypeNotification type) {
    try {
      return Color(int.parse(type.couleur.replaceFirst('#', '0xFF')));
    } catch (e) {
      return AppColors.primary;
    }
  }

  Color _getStatutColor(StatutNotification statut) {
    try {
      return Color(int.parse(statut.couleur.replaceFirst('#', '0xFF')));
    } catch (e) {
      return AppColors.primary;
    }
  }

  bool _hasActiveFilters() {
    return widget.selectedTypes.isNotEmpty || widget.selectedStatuts.isNotEmpty;
  }

  void _clearAllFilters() {
    widget.onFiltersChanged(
      types: <TypeNotification>{},
      statuts: <StatutNotification>{},
    );
  }
}