import 'package:flutter/material.dart';
import 'package:shadcn_ui/shadcn_ui.dart';
import 'package:superport/utils/constants.dart';
import 'package:superport/core/extensions/license_expiry_summary_extensions.dart';
import 'package:superport/data/models/dashboard/license_expiry_summary.dart';

/// 라이선스 만료 알림 배너 위젯 (ShadCN UI)
class LicenseExpiryAlert extends StatelessWidget {
  final LicenseExpirySummary summary;
  
  const LicenseExpiryAlert({
    super.key,
    required this.summary,
  });

  @override
  Widget build(BuildContext context) {
    if (summary.alertLevel == 0) {
      return const SizedBox.shrink(); // 알림이 필요없으면 숨김
    }

    return GestureDetector(
      onTap: () => _navigateToLicenses(context),
      child: Container(
        margin: const EdgeInsets.all(16.0),
        child: ShadCard(
          backgroundColor: _getAlertBackgroundColor(summary.alertLevel),
          border: Border.all(
            color: _getAlertBorderColor(summary.alertLevel),
            width: 1.0,
          ),
          padding: const EdgeInsets.all(16.0),
          child: Row(
            children: [
              Icon(
                _getAlertIcon(summary.alertLevel),
                color: _getAlertIconColor(summary.alertLevel),
                size: 24,
              ),
              const SizedBox(width: 12),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      _getAlertTitle(summary.alertLevel),
                      style: TextStyle(
                        fontSize: 16,
                        fontWeight: FontWeight.bold,
                        color: _getAlertTextColor(summary.alertLevel),
                      ),
                    ),
                    const SizedBox(height: 4),
                    Text(
                      summary.alertMessage,
                      style: TextStyle(
                        fontSize: 14,
                        color: _getAlertTextColor(summary.alertLevel).withValues(alpha: 0.8 * 255),
                      ),
                    ),
                    if (summary.alertLevel > 1) ...[
                      const SizedBox(height: 8),
                      Text(
                        '상세 내용을 확인하려면 탭하세요',
                        style: TextStyle(
                          fontSize: 12,
                          fontStyle: FontStyle.italic,
                          color: _getAlertTextColor(summary.alertLevel).withValues(alpha: 0.6 * 255),
                        ),
                      ),
                    ],
                  ],
                ),
              ),
              _buildStatsBadges(),
              const SizedBox(width: 8),
              Icon(
                Icons.arrow_forward_ios,
                size: 16,
                color: _getAlertTextColor(summary.alertLevel).withValues(alpha: 0.6 * 255),
              ),
            ],
          ),
        ),
      ),
    );
  }

  /// 통계 배지들 생성
  Widget _buildStatsBadges() {
    return Row(
      children: [
        if (summary.expired > 0)
          Padding(
            padding: const EdgeInsets.only(left: 4),
            child: ShadBadge(
              backgroundColor: Colors.red.shade100,
              child: Text(
                '만료 ${summary.expired}',
                style: const TextStyle(fontSize: 10, fontWeight: FontWeight.bold),
              ),
            ),
          ),
        if (summary.expiring7Days > 0)
          Padding(
            padding: const EdgeInsets.only(left: 4),
            child: ShadBadge(
              backgroundColor: Colors.orange.shade100,
              child: Text(
                '7일 ${summary.expiring7Days}',
                style: const TextStyle(fontSize: 10, fontWeight: FontWeight.bold),
              ),
            ),
          ),
        if (summary.expiring30Days > 0)
          Padding(
            padding: const EdgeInsets.only(left: 4),
            child: ShadBadge(
              backgroundColor: Colors.yellow.shade100,
              child: Text(
                '30일 ${summary.expiring30Days}',
                style: const TextStyle(fontSize: 10, fontWeight: FontWeight.bold),
              ),
            ),
          ),
      ],
    );
  }

  /// 유지보수 일정 화면으로 이동
  void _navigateToLicenses(BuildContext context) {
    Navigator.pushNamed(context, Routes.maintenanceSchedule);
  }

  /// 알림 레벨별 배경색
  Color _getAlertBackgroundColor(int level) {
    switch (level) {
      case 3: return Colors.red.shade50;
      case 2: return Colors.orange.shade50;
      case 1: return Colors.yellow.shade50;
      default: return Colors.green.shade50;
    }
  }

  /// 알림 레벨별 테두리색
  Color _getAlertBorderColor(int level) {
    switch (level) {
      case 3: return Colors.red.shade200;
      case 2: return Colors.orange.shade200;
      case 1: return Colors.yellow.shade200;
      default: return Colors.green.shade200;
    }
  }

  /// 알림 레벨별 아이콘
  IconData _getAlertIcon(int level) {
    switch (level) {
      case 3: return Icons.error;
      case 2: return Icons.warning;
      case 1: return Icons.info;
      default: return Icons.check_circle;
    }
  }

  /// 알림 레벨별 아이콘 색상
  Color _getAlertIconColor(int level) {
    switch (level) {
      case 3: return Colors.red.shade600;
      case 2: return Colors.orange.shade600;
      case 1: return Colors.yellow.shade700;
      default: return Colors.green.shade600;
    }
  }

  /// 알림 레벨별 텍스트 색상
  Color _getAlertTextColor(int level) {
    switch (level) {
      case 3: return Colors.red.shade800;
      case 2: return Colors.orange.shade800;
      case 1: return Colors.yellow.shade800;
      default: return Colors.green.shade800;
    }
  }

  /// 알림 레벨별 타이틀
  String _getAlertTitle(int level) {
    switch (level) {
      case 3: return '유지보수 만료 위험';
      case 2: return '유지보수 만료 경고';
      case 1: return '유지보수 만료 주의';
      default: return '유지보수 정상';
    }
  }
}