using Chickensoft.Collections;
using Godot;
using Zennysoft.Game.Abstractions;

namespace Zennysoft.Game.Ma.Implementation;

public interface IGameRepo : IDisposable
{
  event Action? Ended;

  event Action? CloseInventoryEvent;

  event Action<string>? AnnounceMessageOnMainScreenEvent;

  event Action<string>? AnnounceMessageInInventoryEvent;

  event Action<int>? DoubleExpTimeStart;

  event Action? DoubleExpTimeEnd;

  event Action<IInventoryItem>? RemoveItemFromInventoryEvent;

  void Pause();

  void Resume();

  IAutoProp<bool> IsPaused { get; }

  public void StartDoubleEXP(TimeSpan lengthOfEffect);

  public void EndDoubleExp();

  public void AnnounceMessageOnMainScreen(string message);

  public void AnnounceMessageInInventory(string message);

  public void RemoveItemFromInventory(IInventoryItem item);

  public void CloseInventory();

  public double ExpRate { get; }
}

public class GameRepo : IGameRepo
{
  public event Action? Ended;
  public event Action? CloseInventoryEvent;
  public event Action<string>? AnnounceMessageOnMainScreenEvent;
  public event Action<string>? AnnounceMessageInInventoryEvent;
  public event Action<int>? DoubleExpTimeStart;
  public event Action? DoubleExpTimeEnd;
  public event Action<IInventoryItem>? RemoveItemFromInventoryEvent;

  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)
  {
    AnnounceMessageInInventory("Experience points temporarily doubled.");
    DoubleExpTimeStart?.Invoke(lengthOfEffect.Seconds);
    ExpRate = 2;
  }

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

  public void AnnounceMessageOnMainScreen(string message)
  {
    AnnounceMessageOnMainScreenEvent?.Invoke(message);
  }

  public void AnnounceMessageInInventory(string message)
  {
    AnnounceMessageInInventoryEvent?.Invoke(message);
  }

  public void RemoveItemFromInventory(IInventoryItem item)
  {
    RemoveItemFromInventoryEvent?.Invoke(item);
  }

  public void CloseInventory()
  {
    CloseInventoryEvent?.Invoke();
  }

  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);
  }
}