using Godot;
using System;
using System.Linq;

namespace Zennysoft.Game.Ma;

public static class LayoutToScenePathConverter
{
  private static readonly string _folderPath = "res://src/map/dungeon/floors";

  public static string Convert(FloorNode floorNode)
  {
    if (floorNode is DungeonFloorNode dungeonFloorNode)
      return RandomDungeonFloor(dungeonFloorNode);
    else if (floorNode is SpecialFloorNode specialFloorNode)
      return SpawnSpecialFloor(specialFloorNode.FloorName);
    throw new NotImplementedException();
  }

  private static string SpawnSpecialFloor(SpecialFloorType floorType)
  {
    var path = $"{_folderPath}/Special Floors/";
    var files = DirAccess.GetFilesAt(path);
    switch (floorType)
    {
      case SpecialFloorType.Overworld:
        return path + files.Single(x => x.Contains("Overworld.tscn"));
      case SpecialFloorType.Altar:
        return path + files.Single(x => x.Contains("Altar.tscn"));
      case SpecialFloorType.BossFloorA:
        return path + files.Single(x => x.Contains("Boss Floor A.tscn"));
      case SpecialFloorType.BossFloorB:
        return path + files.Single(x => x.Contains("Boss Floor B.tscn"));
      case SpecialFloorType.GoddessOfGuidanceFloor:
        return path + files.Single(x => x.Contains("Goddess of Guidance's Room.tscn"));
      case SpecialFloorType.TrueGoddessOfGuidanceFloor:
        return path + files.Single(x => x.Contains("Goddess of Guidance's Room - True Form.tscn"));
      case SpecialFloorType.FinalFloor:
        return path + files.Single(x => x.Contains("Final Floor.tscn"));
      default:
        throw new NotImplementedException();
    }
  }

  private static string RandomDungeonFloor(DungeonFloorNode floorNode)
  {
    var folderName = _folderPath + "/" + floorNode.FolderName;
    var floorList = DirAccess.GetFilesAt(folderName).Where(x => x.EndsWith(".tscn"));
    var rng = new RandomNumberGenerator();
    rng.Randomize();
    var index = (int)rng.RandWeighted([.. floorNode.FloorOdds]);
    var result = floorList.ElementAt(index);
    return folderName + "/" + result;
  }
}