import 'package:flutter/material.dart';

enum SectorActionType {
  create,
  update,
  delete,
}

class SectorActionResultDialog extends StatelessWidget {
  final SectorActionType actionType;
  final String sectorName;
  final Map<String, dynamic> statistics;
  final Map<String, dynamic>? departmentWarning;
  final VoidCallback? onConfirm;

  const SectorActionResultDialog({
    super.key,
    required this.actionType,
    required this.sectorName,
    required this.statistics,
    this.departmentWarning,
    this.onConfirm,
  });

  String get _actionTitle {
    switch (actionType) {
      case SectorActionType.create:
        return 'Secteur créé';
      case SectorActionType.update:
        return 'Secteur modifié';
      case SectorActionType.delete:
        return 'Secteur supprimé';
    }
  }

  IconData get _actionIcon {
    switch (actionType) {
      case SectorActionType.create:
        return Icons.add_location_alt;
      case SectorActionType.update:
        return Icons.edit_location_alt;
      case SectorActionType.delete:
        return Icons.delete_forever;
    }
  }

  Color get _actionColor {
    switch (actionType) {
      case SectorActionType.create:
        return Colors.green;
      case SectorActionType.update:
        return Colors.orange;
      case SectorActionType.delete:
        return Colors.red;
    }
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: Row(
        children: [
          Icon(_actionIcon, color: _actionColor, size: 28),
          const SizedBox(width: 12),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  _actionTitle,
                  style: const TextStyle(fontSize: 20),
                ),
                const SizedBox(height: 4),
                Text(
                  sectorName,
                  style: TextStyle(
                    fontSize: 16,
                    fontWeight: FontWeight.normal,
                    color: Colors.grey[700],
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
      content: SingleChildScrollView(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            // Warning départemental si présent
            if (departmentWarning != null && departmentWarning!['intersecting_departments'] != null) ...[
              _buildDepartmentWarning(),
              const SizedBox(height: 16),
            ],

            // Statistiques des passages
            _buildStatisticsSection(),
          ],
        ),
      ),
      actions: [
        TextButton(
          onPressed: () {
            Navigator.of(context).pop();
            onConfirm?.call();
          },
          child: const Text('OK'),
        ),
      ],
    );
  }

  Widget _buildDepartmentWarning() {
    final departments = departmentWarning!['intersecting_departments'] as List<dynamic>;
    final isMultipleDepartments = departments.length > 1;
    
    return Container(
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: Colors.orange.withValues(alpha: 0.1),
        borderRadius: BorderRadius.circular(8),
        border: Border.all(color: Colors.orange.withValues(alpha: 0.3)),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              Icon(Icons.warning_amber_rounded, color: Colors.orange[700], size: 24),
              const SizedBox(width: 8),
              Expanded(
                child: Text(
                  isMultipleDepartments 
                    ? 'Secteur à cheval sur plusieurs départements'
                    : 'Secteur sur un autre département',
                  style: TextStyle(
                    fontWeight: FontWeight.bold,
                    color: Colors.orange[900],
                  ),
                ),
              ),
            ],
          ),
          const SizedBox(height: 8),
          ...departments.map((dept) {
            final percentage = dept['percentage_overlap'] as num;
            return Padding(
              padding: const EdgeInsets.only(left: 32, top: 4),
              child: Row(
                children: [
                  Icon(Icons.location_on, size: 16, color: Colors.orange[700]),
                  const SizedBox(width: 4),
                  Expanded(
                    child: Text(
                      '${dept['nom_dept']} (${dept['code_dept']})',
                      style: TextStyle(color: Colors.orange[900]),
                    ),
                  ),
                  Text(
                    '${percentage.toStringAsFixed(1)}%',
                    style: TextStyle(
                      fontWeight: FontWeight.bold,
                      color: Colors.orange[900],
                    ),
                  ),
                ],
              ),
            );
          }).toList(),
        ],
      ),
    );
  }

  Widget _buildStatisticsSection() {
    final List<Widget> statisticWidgets = [];

    // Titre de la section
    statisticWidgets.add(
      Padding(
        padding: const EdgeInsets.only(bottom: 12),
        child: Text(
          'Statistiques des passages',
          style: TextStyle(
            fontSize: 16,
            fontWeight: FontWeight.bold,
            color: Colors.grey[800],
          ),
        ),
      ),
    );

    // CREATE : passages créés et intégrés
    if (actionType == SectorActionType.create) {
      final passagesCreated = statistics['passages_created'] ?? 0;
      final passagesIntegrated = statistics['passages_integrated'] ?? 0;
      final totalPassages = passagesCreated + passagesIntegrated;

      statisticWidgets.add(_buildStatRow(
        icon: Icons.add_circle_outline,
        label: 'Nouveaux passages créés',
        value: passagesCreated,
        color: Colors.green,
      ));

      if (passagesIntegrated > 0) {
        statisticWidgets.add(_buildStatRow(
          icon: Icons.merge_type,
          label: 'Passages orphelins intégrés',
          value: passagesIntegrated,
          color: Colors.blue,
        ));
      }

      statisticWidgets.add(const Divider(height: 24));
      
      statisticWidgets.add(_buildStatRow(
        icon: Icons.functions,
        label: 'Total des passages du secteur',
        value: totalPassages,
        color: Colors.indigo,
        isBold: true,
      ));
    }

    // UPDATE : passages créés, mis à jour, orphelins, total
    else if (actionType == SectorActionType.update) {
      final passagesCreated = statistics['passages_created'] ?? 0;
      final passagesUpdated = statistics['passages_updated'] ?? 0;
      final passagesOrphaned = statistics['passages_orphaned'] ?? 0;
      final passagesTotal = statistics['passages_total'] ?? 0;

      if (passagesCreated > 0) {
        statisticWidgets.add(_buildStatRow(
          icon: Icons.add_circle_outline,
          label: 'Nouveaux passages créés',
          value: passagesCreated,
          color: Colors.green,
        ));
      }

      if (passagesUpdated > 0) {
        statisticWidgets.add(_buildStatRow(
          icon: Icons.update,
          label: 'Passages mis à jour',
          value: passagesUpdated,
          color: Colors.blue,
        ));
      }

      if (passagesOrphaned > 0) {
        statisticWidgets.add(_buildStatRow(
          icon: Icons.remove_circle_outline,
          label: 'Passages mis en orphelin',
          value: passagesOrphaned,
          color: Colors.orange,
        ));
      }

      statisticWidgets.add(const Divider(height: 24));
      
      statisticWidgets.add(_buildStatRow(
        icon: Icons.functions,
        label: 'Total des passages du secteur',
        value: passagesTotal,
        color: Colors.indigo,
        isBold: true,
      ));
    }

    // DELETE : passages supprimés et conservés
    else if (actionType == SectorActionType.delete) {
      final passagesDeleted = statistics['passages_deleted'] ?? 0;
      final passagesReassigned = statistics['passages_reassigned'] ?? 0;

      if (passagesDeleted > 0) {
        statisticWidgets.add(_buildStatRow(
          icon: Icons.delete_outline,
          label: 'Passages supprimés',
          value: passagesDeleted,
          color: Colors.red,
        ));
      }

      if (passagesReassigned > 0) {
        statisticWidgets.add(_buildStatRow(
          icon: Icons.bookmark_border,
          label: 'Passages conservés (orphelins)',
          value: passagesReassigned,
          color: Colors.orange,
        ));
      }

      if (passagesDeleted == 0 && passagesReassigned == 0) {
        statisticWidgets.add(
          Text(
            'Aucun passage dans ce secteur',
            style: TextStyle(
              color: Colors.grey[600],
              fontStyle: FontStyle.italic,
            ),
          ),
        );
      }
    }

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: statisticWidgets,
    );
  }

  Widget _buildStatRow({
    required IconData icon,
    required String label,
    required int value,
    required Color color,
    bool isBold = false,
  }) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 4),
      child: Row(
        children: [
          Icon(icon, color: color, size: 20),
          const SizedBox(width: 8),
          Expanded(
            child: Text(
              label,
              style: TextStyle(
                fontWeight: isBold ? FontWeight.bold : FontWeight.normal,
              ),
            ),
          ),
          Text(
            value.toString(),
            style: TextStyle(
              fontWeight: FontWeight.bold,
              color: color,
              fontSize: isBold ? 18 : 16,
            ),
          ),
        ],
      ),
    );
  }
}