import 'dart:typed_data';

// --- The Magic Conditional Import ---
// If dart:io is available, use the real scanner. Otherwise, use the stub.
import 'package:wolf_3d_data_types/wolf_3d_data_types.dart';

import 'io/discovery_stub.dart'
    if (dart.library.io) 'io/discovery_io.dart'
    as platform;
import 'wl_parser.dart';

class WolfensteinLoader {
  /// Scans a directory for Wolfenstein 3D data files and loads all available versions.
  ///
  /// NOTE: This will throw an [UnsupportedError] on Web platforms.
  static Future<Map<GameVersion, WolfensteinData>> discover({
    String? directoryPath,
    bool recursive = false,
  }) {
    return platform.discoverInDirectory(
      directoryPath: directoryPath,
      recursive: recursive,
    );
  }

  /// Parses WolfensteinData directly from raw ByteData.
  /// This is 100% pure Dart and is safe to use on all platforms, including Web.
  static WolfensteinData loadFromBytes({
    required GameVersion version,
    required ByteData vswap,
    required ByteData mapHead,
    required ByteData gameMaps,
    required ByteData vgaDict,
    required ByteData vgaHead,
    required ByteData vgaGraph,
    required ByteData audioHed,
    required ByteData audioT,
  }) {
    // We just act as a clean pass-through to the core parser
    return WLParser.load(
      version: version,
      vswap: vswap,
      mapHead: mapHead,
      gameMaps: gameMaps,
      vgaDict: vgaDict,
      vgaHead: vgaHead,
      vgaGraph: vgaGraph,
      audioHed: audioHed,
      audioT: audioT,
    );
  }
}