import 'package:flutter/services.dart';
import 'package:wolf_dart/classes/matrix.dart';
import 'package:wolf_dart/features/map/vswap_parser.dart';
import 'package:wolf_dart/features/map/wolf_level.dart';
import 'package:wolf_dart/features/map/wolf_map_parser.dart';

class WolfMap {
  /// The fully parsed and decompressed levels from the game files.
  final List<WolfLevel> levels;
  final List<Matrix<int>> textures;

  // A private constructor so we can only instantiate this from the async loader
  WolfMap._(this.levels, this.textures);

  /// Asynchronously loads the map files and parses them into a new WolfMap instance.
  static Future<WolfMap> load() async {
    // 1. Load the binary data
    final mapHead = await rootBundle.load("assets/MAPHEAD.WL1");
    final gameMaps = await rootBundle.load("assets/GAMEMAPS.WL1");
    final vswap = await rootBundle.load("assets/VSWAP.WL1");

    // 2. Parse the data using the parser we just built
    final parsedLevels = WolfMapParser.parseMaps(mapHead, gameMaps);
    final parsedTextures = VswapParser.parseWalls(vswap);

    // 3. Return the populated instance!
    return WolfMap._(parsedLevels, parsedTextures);
  }
}