import 'package:flutter/material.dart';

class InvitationUtils {
  static IconData getIconFromName(String iconName) {
    switch (iconName) {
      case 'sports_soccer':
        return Icons.sports_soccer;
      case 'restaurant':
        return Icons.restaurant;
      case 'games':
        return Icons.games;
      case 'menu_book':
        return Icons.menu_book;
      case 'group':
        return Icons.group;
      case 'flight':
        return Icons.flight;
      case 'music_note':
        return Icons.music_note;
      case 'movie':
        return Icons.movie;
      case 'coffee':
        return Icons.coffee;
      case 'local_dining':
        return Icons.local_dining;
      case 'sports':
        return Icons.sports;
      case 'school':
        return Icons.school;
      default:
        return Icons.category;
    }
  }

  static Color getColorFromHex(String hexColor) {
    String cleanHex = hexColor.replaceAll('#', '');
    if (cleanHex.length == 6) {
      cleanHex = 'FF' + cleanHex;
    }
    return Color(int.parse(cleanHex, radix: 16));
  }

  static String getRelativeTime(DateTime dateTime) {
    final now = DateTime.now();
    final difference = now.difference(dateTime);

    if (difference.inMinutes < 1) {
      return 'just now';
    } else if (difference.inMinutes < 60) {
      return '${difference.inMinutes}m ago';
    } else if (difference.inHours < 24) {
      return '${difference.inHours}h ago';
    } else if (difference.inDays == 1) {
      return 'yesterday';
    } else if (difference.inDays < 7) {
      return '${difference.inDays}d ago';
    } else {
      return '${dateTime.day}/${dateTime.month}/${dateTime.year}';
    }
  }

  static String getRelativeDateTime(DateTime dateTime) {
    final now = DateTime.now();
    final today = DateTime(now.year, now.month, now.day);
    final tomorrow = today.add(Duration(days: 1));
    final eventDate = DateTime(dateTime.year, dateTime.month, dateTime.day);

    String timeString = _formatTime(dateTime);

    if (eventDate == today) {
      return 'today at $timeString';
    } else if (eventDate == tomorrow) {
      return 'tomorrow at $timeString';
    } else if (eventDate.isAfter(today) &&
        eventDate.isBefore(today.add(Duration(days: 7)))) {
      List<String> weekdays = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'];
      return '${weekdays[eventDate.weekday - 1]} at $timeString';
    } else {
      return '${eventDate.day}/${eventDate.month} at $timeString';
    }
  }

  static String _formatTime(DateTime dateTime) {
    int hour = dateTime.hour;
    String period = hour >= 12 ? 'PM' : 'AM';
    hour = hour > 12 ? hour - 12 : (hour == 0 ? 12 : hour);
    String minute = dateTime.minute.toString().padLeft(2, '0');
    return '$hour:$minute $period';
  }

  static String truncateDescription(String? description, {int maxLength = 80}) {
    if (description == null || description.isEmpty) return '';
    if (description.length <= maxLength) return description;
    return '${description.substring(0, maxLength)}...';
  }

  static String getParticipantsStatus(int current, int max) {
    return '$current/$max';
  }

  static Color getParticipantsStatusColor(int current, int max) {
    int needed = max - current;
    if (needed <= 2 && needed > 0) {
      return Colors.orange;
    } else if (current == max) {
      return Colors.green;
    } else {
      return Colors.blue;
    }
  }
}