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 '../../../../core/utils/date_formatter.dart';
import '../../../../core/utils/currency_formatter.dart';
import '../../domain/entities/demande_aide.dart';

/// Widget de carte pour afficher une demande d'aide
/// 
/// Cette carte affiche les informations essentielles d'une demande d'aide
/// avec un design cohérent et des interactions tactiles.
class DemandeAideCard extends StatelessWidget {
  final DemandeAide demande;
  final bool isSelected;
  final bool isSelectionMode;
  final VoidCallback? onTap;
  final VoidCallback? onLongPress;
  final ValueChanged<bool>? onSelectionChanged;

  const DemandeAideCard({
    super.key,
    required this.demande,
    this.isSelected = false,
    this.isSelectionMode = false,
    this.onTap,
    this.onLongPress,
    this.onSelectionChanged,
  });

  @override
  Widget build(BuildContext context) {
    return UnifiedCard(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
      child: InkWell(
        onTap: onTap,
        onLongPress: onLongPress,
        borderRadius: BorderRadius.circular(12),
        child: Container(
          padding: const EdgeInsets.all(16),
          decoration: BoxDecoration(
            borderRadius: BorderRadius.circular(12),
            border: isSelected
                ? Border.all(color: AppColors.primary, width: 2)
                : null,
          ),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              _buildHeader(),
              const SizedBox(height: 12),
              _buildContent(),
              const SizedBox(height: 12),
              _buildFooter(),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildHeader() {
    return Row(
      children: [
        if (isSelectionMode) ...[
          Checkbox(
            value: isSelected,
            onChanged: onSelectionChanged,
            activeColor: AppColors.primary,
          ),
          const SizedBox(width: 8),
        ],
        Expanded(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                children: [
                  Expanded(
                    child: Text(
                      demande.titre,
                      style: AppTextStyles.titleMedium.copyWith(
                        fontWeight: FontWeight.bold,
                      ),
                      maxLines: 2,
                      overflow: TextOverflow.ellipsis,
                    ),
                  ),
                  const SizedBox(width: 8),
                  _buildStatutChip(),
                ],
              ),
              const SizedBox(height: 4),
              Row(
                children: [
                  Icon(
                    Icons.person,
                    size: 16,
                    color: AppColors.textSecondary,
                  ),
                  const SizedBox(width: 4),
                  Expanded(
                    child: Text(
                      demande.nomDemandeur,
                      style: AppTextStyles.bodySmall.copyWith(
                        color: AppColors.textSecondary,
                      ),
                      maxLines: 1,
                      overflow: TextOverflow.ellipsis,
                    ),
                  ),
                  const SizedBox(width: 8),
                  Text(
                    demande.numeroReference,
                    style: AppTextStyles.bodySmall.copyWith(
                      color: AppColors.textSecondary,
                      fontFamily: 'monospace',
                    ),
                  ),
                ],
              ),
            ],
          ),
        ),
        if (demande.estUrgente) ...[
          const SizedBox(width: 8),
          Container(
            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
            decoration: BoxDecoration(
              color: AppColors.error.withOpacity(0.1),
              borderRadius: BorderRadius.circular(12),
            ),
            child: Row(
              mainAxisSize: MainAxisSize.min,
              children: [
                Icon(
                  Icons.priority_high,
                  size: 16,
                  color: AppColors.error,
                ),
                const SizedBox(width: 4),
                Text(
                  'URGENT',
                  style: AppTextStyles.labelSmall.copyWith(
                    color: AppColors.error,
                    fontWeight: FontWeight.bold,
                  ),
                ),
              ],
            ),
          ),
        ],
      ],
    );
  }

  Widget _buildContent() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          demande.description,
          style: AppTextStyles.bodyMedium,
          maxLines: 3,
          overflow: TextOverflow.ellipsis,
        ),
        const SizedBox(height: 8),
        Row(
          children: [
            _buildTypeAideChip(),
            const SizedBox(width: 8),
            _buildPrioriteChip(),
            const Spacer(),
            if (demande.montantDemande != null)
              Text(
                CurrencyFormatter.formatCFA(demande.montantDemande!),
                style: AppTextStyles.titleSmall.copyWith(
                  color: AppColors.primary,
                  fontWeight: FontWeight.bold,
                ),
              ),
          ],
        ),
      ],
    );
  }

  Widget _buildFooter() {
    return Row(
      children: [
        Icon(
          Icons.access_time,
          size: 16,
          color: AppColors.textSecondary,
        ),
        const SizedBox(width: 4),
        Text(
          'Créée ${DateFormatter.formatRelative(demande.dateCreation)}',
          style: AppTextStyles.bodySmall.copyWith(
            color: AppColors.textSecondary,
          ),
        ),
        if (demande.dateModification != demande.dateCreation) ...[
          const SizedBox(width: 8),
          Text(
            '• Modifiée ${DateFormatter.formatRelative(demande.dateModification)}',
            style: AppTextStyles.bodySmall.copyWith(
              color: AppColors.textSecondary,
            ),
          ),
        ],
        const Spacer(),
        _buildProgressIndicator(),
      ],
    );
  }

  Widget _buildStatutChip() {
    final color = _getStatutColor(demande.statut);
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
      decoration: BoxDecoration(
        color: color.withOpacity(0.1),
        borderRadius: BorderRadius.circular(12),
      ),
      child: Text(
        demande.statut.libelle,
        style: AppTextStyles.labelSmall.copyWith(
          color: color,
          fontWeight: FontWeight.w600,
        ),
      ),
    );
  }

  Widget _buildTypeAideChip() {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
      decoration: BoxDecoration(
        color: AppColors.surface,
        borderRadius: BorderRadius.circular(8),
        border: Border.all(color: AppColors.outline),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Icon(
            _getTypeAideIcon(demande.typeAide),
            size: 14,
            color: AppColors.primary,
          ),
          const SizedBox(width: 4),
          Text(
            demande.typeAide.libelle,
            style: AppTextStyles.labelSmall.copyWith(
              color: AppColors.textPrimary,
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildPrioriteChip() {
    final color = _getPrioriteColor(demande.priorite);
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
      decoration: BoxDecoration(
        color: color.withOpacity(0.1),
        borderRadius: BorderRadius.circular(8),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Icon(
            _getPrioriteIcon(demande.priorite),
            size: 14,
            color: color,
          ),
          const SizedBox(width: 4),
          Text(
            demande.priorite.libelle,
            style: AppTextStyles.labelSmall.copyWith(
              color: color,
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildProgressIndicator() {
    final progress = demande.pourcentageAvancement;
    final color = _getProgressColor(progress);
    
    return Row(
      mainAxisSize: MainAxisSize.min,
      children: [
        Container(
          width: 60,
          height: 4,
          decoration: BoxDecoration(
            color: AppColors.outline,
            borderRadius: BorderRadius.circular(2),
          ),
          child: FractionallySizedBox(
            alignment: Alignment.centerLeft,
            widthFactor: progress / 100,
            child: Container(
              decoration: BoxDecoration(
                color: color,
                borderRadius: BorderRadius.circular(2),
              ),
            ),
          ),
        ),
        const SizedBox(width: 8),
        Text(
          '${progress.toInt()}%',
          style: AppTextStyles.labelSmall.copyWith(
            color: color,
            fontWeight: FontWeight.w600,
          ),
        ),
      ],
    );
  }

  Color _getStatutColor(StatutAide statut) {
    switch (statut) {
      case StatutAide.brouillon:
        return AppColors.textSecondary;
      case StatutAide.soumise:
        return AppColors.warning;
      case StatutAide.enEvaluation:
        return AppColors.info;
      case StatutAide.approuvee:
        return AppColors.success;
      case StatutAide.rejetee:
        return AppColors.error;
      case StatutAide.enCours:
        return AppColors.primary;
      case StatutAide.terminee:
        return AppColors.success;
      case StatutAide.versee:
        return AppColors.success;
      case StatutAide.livree:
        return AppColors.success;
      case StatutAide.annulee:
        return AppColors.error;
    }
  }

  Color _getPrioriteColor(PrioriteAide priorite) {
    switch (priorite) {
      case PrioriteAide.basse:
        return AppColors.success;
      case PrioriteAide.normale:
        return AppColors.info;
      case PrioriteAide.haute:
        return AppColors.warning;
      case PrioriteAide.critique:
        return AppColors.error;
    }
  }

  Color _getProgressColor(double progress) {
    if (progress < 25) return AppColors.error;
    if (progress < 50) return AppColors.warning;
    if (progress < 75) return AppColors.info;
    return AppColors.success;
  }

  IconData _getTypeAideIcon(TypeAide typeAide) {
    switch (typeAide) {
      case TypeAide.aideFinanciereUrgente:
        return Icons.attach_money;
      case TypeAide.aideFinanciereMedicale:
        return Icons.medical_services;
      case TypeAide.aideFinanciereEducation:
        return Icons.school;
      case TypeAide.aideMaterielleVetements:
        return Icons.checkroom;
      case TypeAide.aideMaterielleNourriture:
        return Icons.restaurant;
      case TypeAide.aideProfessionnelleFormation:
        return Icons.work;
      case TypeAide.aideSocialeAccompagnement:
        return Icons.support;
      case TypeAide.autre:
        return Icons.help;
    }
  }

  IconData _getPrioriteIcon(PrioriteAide priorite) {
    switch (priorite) {
      case PrioriteAide.basse:
        return Icons.keyboard_arrow_down;
      case PrioriteAide.normale:
        return Icons.remove;
      case PrioriteAide.haute:
        return Icons.keyboard_arrow_up;
      case PrioriteAide.critique:
        return Icons.priority_high;
    }
  }
}