using Godot;
using System.Collections.Generic;
using Rokojori.Extensions;
namespace Rokojori;

[Tool]
[GlobalClass, Icon("res://addons/rokojori_action_library/Icons/Action.svg")]
public partial class Receptor:Action
{
	[Export]
  public SceneCondition sceneCondition;
  
  [Export( PropertyHint.Range, "0.1,100")]
  public float receiptionTriggerCoverage = 75f;
  
  [Export( PropertyHint.Range, "10,2000")]
  public float receiptionWindowDurationMS = 500f;
  
  [Export( PropertyHint.Range, "10,1000")]
  public float tickRateMS = 100f;

  [Export]
  public Timeline timeline;
 
  int resultSize => Mathf.CeilToInt( receiptionWindowDurationMS / tickRateMS );
  
  RingBuffer<bool> _resultsBuffer;

  bool _activated = false;

  public bool activated => _activated;

  bool _active = false;

  public bool active => _active;

  int _eventID = -1;

  public void Start()
  {
    if ( _active )
    {
      return;
    }

    _active = true;

    var duration = tickRateMS / 1000f;
    var tle = TimelineManager.ScheduleLoopEvent( timeline, duration, 0, tle => Sample() );
    _eventID = tle.id;
  }

  public void Stop()
  {
    if ( ! _active )
    {
      return;
    }

    _active = false;

    TimelineManager.RemoveEvent( timeline, _eventID );
    _eventID = -1;
  }

  protected override void _OnTrigger()
  {
    Sample();
  }

  void Sample()
  {
    if ( sceneCondition == null )
    {
      return;
    }

    if ( _resultsBuffer == null || _resultsBuffer.capacity != resultSize )
    {
      _resultsBuffer = new RingBuffer<bool>( resultSize );
    }

    _resultsBuffer.Add( sceneCondition.Evaluate() );

    if ( _resultsBuffer.count != resultSize )
    {
      _activated = false;
      return;
    }

    var numActive = _resultsBuffer.CountItems( b => b );
    _activated = numActive / (float) resultSize >= receiptionTriggerCoverage / 100f;

  }
}