using Chickensoft.AutoInject;
using Chickensoft.Introspection;
using Godot;

namespace Zennysoft.Game.Ma;

[Meta(typeof(IAutoNode))]
public partial class EngagePlayerBehavior : Node, IEngagePlayerBehavior
{
  public override void _Notification(int what) => this.Notify(what);

  [Export] public float _minimumAttackTime { get; set; } = 2f;
  [Export] public float _maximumAttackTime { get; set; } = 5f;
  [Export] public float _acquireTargetTime { get; set; } = 1f;

  private Timer _actionTimer { get; set; } = default!;
  private Timer _acquireTargetTimer { get; set; } = default!;

  [Signal] public delegate void TakeActionEventHandler();
  [Signal] public delegate void AcquireTargetEventHandler();

  public void OnReady()
  {
    _actionTimer = new Timer();
    _acquireTargetTimer = new Timer() { WaitTime = _acquireTargetTime };
    _actionTimer.WaitTime = 0.8f;
    _actionTimer.Timeout += OnAttackTimeout;
    _acquireTargetTimer.Timeout += OnAcquireTargetTimeout;
    AddChild(_actionTimer);
    AddChild(_acquireTargetTimer);
  }

  public void Engage()
  {
    _actionTimer.Start();
    _acquireTargetTimer.Start();
  }

  public void Disengage()
  {
    _actionTimer.Stop();
    _acquireTargetTimer.Stop();
  }

  private void OnAttackTimeout()
  {
    _actionTimer.Stop();
    _actionTimer.WaitTime = RandomizeTimer(_minimumAttackTime, _maximumAttackTime);
    _actionTimer.Start();
    EmitSignal(SignalName.TakeAction);
  }

  private void OnAcquireTargetTimeout()
  {
    EmitSignal(SignalName.AcquireTarget);
  }

  private float RandomizeTimer(float min, float max)
  {
    var rng = new RandomNumberGenerator();
    rng.Randomize();
    return rng.RandfRange(min, max);
  }

  public void OnExitTree()
  {
    _actionTimer.Stop();
    _acquireTargetTimer.Stop();
    _actionTimer.Timeout -= OnAttackTimeout;
    _acquireTargetTimer.Timeout -= OnAcquireTargetTimeout;
  }
}