import 'dart:io';

// Logger class for writing logs to console and file
class Logger {
  static final Logger _instance = Logger._internal();
  static Logger get instance => _instance;

  File? _logFile;
  IOSink? _logSink;

  Logger._internal() {
    _initLogFile();
  }

  void _initLogFile() {
    try {
      // Use system temp directory
      final tempDir = Directory.systemTemp;
      final logFileName = 'rimworld_modman.log';

      _logFile = File('${tempDir.path}${Platform.pathSeparator}$logFileName');
      _logSink = _logFile!.openWrite(mode: FileMode.writeOnly);

      info('Logging initialized. Log file: ${_logFile!.path}');
    } catch (e) {
      print('Failed to initialize log file: $e');
    }
  }

  void _log(String message, String level) {
    final timestamp = DateTime.now().toIso8601String();
    final formattedMessage = '[$timestamp] [$level] $message';

    // Always print to console
    print(formattedMessage);

    // Write to file if initialized
    if (_logSink != null) {
      try {
        _logSink!.writeln(formattedMessage);
      } catch (e) {
        print('Error writing to log file: $e');
      }
    }
  }

  void info(String message) {
    _log(message, 'INFO');
  }

  void warning(String message) {
    _log(message, 'WARN');
  }

  void error(String message) {
    _log(message, 'ERROR');
  }

  void close() {
    if (_logSink != null) {
      try {
        _logSink!.flush();
        _logSink!.close();
      } catch (e) {
        print('Error closing log file: $e');
      }
      _logSink = null;
    }
  }
}