using Chickensoft.Collections;
using Godot;

namespace Zennysoft.Game.Ma.Implementation;

public interface IGameRepo : IDisposable
{
  event Action? Ended;

  event Action? OpenInventory;

  event Action? CloseInventory;

  event Action<string>? AnnounceMessage;

  event Action<int>? DoubleExpTimeStart;

  event Action? DoubleExpTimeEnd;

  void Pause();

  void Resume();

  IAutoProp<bool> IsPaused { get; }

  public void StartDoubleEXP(TimeSpan lengthOfEffect);

  public void EndDoubleExp();

  public double ExpRate { get; }
}

public class GameRepo : IGameRepo
{
  public event Action? Ended;
  public event Action? OpenInventory;
  public event Action? CloseInventory;
  public event Action<string>? AnnounceMessage;
  public event Action<int>? DoubleExpTimeStart;
  public event Action? DoubleExpTimeEnd;

  public IAutoProp<bool> IsPaused => _isPaused;
  private readonly AutoProp<bool> _isPaused;

  public double ExpRate { get; private set; }

  private bool _disposedValue;

  public GameRepo()
  {
    _isPaused = new AutoProp<bool>(true);
    ExpRate = 1;
  }

  public void Pause()
  {
    _isPaused.OnNext(true);
    GD.Print("Paused");
  }

  public void Resume()
  {
    _isPaused.OnNext(false);
    GD.Print("Resume");
  }

  public void StartDoubleEXP(TimeSpan lengthOfEffect)
  {
    CloseInventory?.Invoke();
    AnnounceMessage?.Invoke("Experience points temporarily doubled.");
    DoubleExpTimeStart?.Invoke(lengthOfEffect.Seconds);
    ExpRate = 2;
  }

  public void EndDoubleExp()
  {
    AnnounceMessage?.Invoke("Experience points effect wore off.");
    ExpRate = 1;
  }

  public void OnGameEnded()
  {
    Pause();
    Ended?.Invoke();
  }

  protected void Dispose(bool disposing)
  {
    if (!_disposedValue)
    {
      if (disposing)
      {
        _isPaused.OnCompleted();
        _isPaused.Dispose();
      }

      _disposedValue = true;
    }
  }

  public void Dispose()
  {
    Dispose(disposing: true);
    GC.SuppressFinalize(this);
  }
}