import 'dart:developer' as developer;

/// 日志级别
enum LogLevel {
  debug,
  info,
  warning,
  error,
}

/// 日志工具类
/// 
/// 提供统一的日志记录接口，方便后续扩展和管理
class Logger {
  /// 当前日志级别，低于此级别的日志不会被输出
  static LogLevel _currentLevel = LogLevel.debug;
  
  /// 设置日志级别
  static void setLevel(LogLevel level) {
    _currentLevel = level;
  }
  
  /// 输出调试日志
  static void debug(String message) {
    if (_currentLevel.index <= LogLevel.debug.index) {
      _log('DEBUG', message);
    }
  }
  
  /// 输出信息日志
  static void info(String message) {
    if (_currentLevel.index <= LogLevel.info.index) {
      _log('INFO', message);
    }
  }
  
  /// 输出警告日志
  static void warning(String message) {
    if (_currentLevel.index <= LogLevel.warning.index) {
      _log('WARNING', message);
    }
  }
  
  /// 输出错误日志
  static void error(String message, [dynamic error, StackTrace? stackTrace]) {
    if (_currentLevel.index <= LogLevel.error.index) {
      _log('ERROR', message);
      if (error != null) {
        _log('ERROR', 'Original error: $error');
      }
      if (stackTrace != null) {
        _log('ERROR', 'Stack trace: $stackTrace');
      }
    }
  }
  
  /// 内部日志输出方法
  static void _log(String level, String message) {
    final timestamp = DateTime.now().toString();
    developer.log('[$timestamp] $level: $message');
  }
}