using System;
using Ventuz.Kernel;
using Phidget22;
using Phidget22.Events;


public class Script : ScriptBase, System.IDisposable
{

    // This member is used by the Validate() method to indicate
    // whether the Generate() method should return true or false
    // during its next execution.
    private bool changed;

	Encoder encoderOne;
	DigitalInput digitalInput;

	float _encoderValue;

    // This Method is called if the component is loaded/created.
    public Script()
    {
        // Note: Accessing input or output properties from this method
        // will have no effect as they have not been allocated yet.
    }

    // This Method is called if the component is unloaded/disposed
    public virtual void Dispose()
    {
    }

    // This Method is called if an input property has changed its value
    public override void Validate()
    {
        // Remember: set changed to true if any of the output
        // properties has been changed, see Generate()

		if(encoderOne != null && encoderOne.Attached){
			{
				d = _encoderValue;
			}

		}
    }

    // This Method is called every time before a frame is rendered.
    // Return value: if true, Ventuz will notify all nodes bound to this
    //               script node that one of the script's outputs has a
    //               new value and they therefore need to validate. For
    //               performance reasons, only return true if output
    //               values really have been changed.
    public override bool Generate()
    {
        if (changed)
        {
            changed = false;
            return true;
        }

        return false;
    }


	// Phidgets Events
	void onAttach(object sender, AttachEventArgs e)
	{
		VLog.Info("Phidget with name:" + encoderOne.DeviceName + "is Attached!");


	}

	void onVoltageRatioChange(object sender, Phidget22.Events.EncoderPositionChangeEventArgs e)
	{

		VLog.Info("Velocity: " + e.PositionChange);
		_encoderValue = e.PositionChange;

	}

	void bridgeVoltageInput_error(object sender, Phidget22.Events.ErrorEventArgs e)
	{
		VLog.Info("DCMotor Error: " + e.Description);

	}

	void OnDetach(object sender, DetachEventArgs e)
	{
		VLog.Info("Phidget with name:" + encoderOne.DeviceName + "is not Attached!!");

	}

	// Digital Input
	void OnDigitalInputAttached(object sender, AttachEventArgs e)
	{
		VLog.Info("Phidget with name:" + digitalInput.DeviceName + "is Attached!");

	}

	void OnDigitalInputDettached(object sender, DetachEventArgs e)
	{
		VLog.Info("Phidget with name:" + digitalInput.DeviceName + "is not Attached!!");

	}


	void digitalInput_error(object sender, Phidget22.Events.ErrorEventArgs e)
	{
		VLog.Info("DigitalInput Error: " + e.Description);

	}

	void OnDigitalInputProprtyChange(object sender, Phidget22.Events.DigitalInputStateChangeEventArgs e)
	{
		VLog.Info("digital Input Changed: " + e.State);

	}

	// This Method is called if the function/method initEncoder is invoked by the user or a bound event.
	// Return true, if this component has to be revalidated!
	public bool OninitEncoder(int arg)
	{

		InitEncoder();
		return false;
	}

	void InitEncoder()
	{
		if (encoderOne != null)
			return;

		encoderOne = new Encoder();

		// Encoder One
		encoderOne.Attach += onAttach;
		encoderOne.Detach += OnDetach;
		encoderOne.Error += bridgeVoltageInput_error;

		encoderOne.PositionChange += onVoltageRatioChange;



		encoderOne.Open();
	}

	// This Method is called if the function/method initDigitalInput is invoked by the user or a bound event.
	// Return true, if this component has to be revalidated!
	public bool OninitDigitalInput(int arg)
	{
		initDigitalInput();
		return false;
	}

	void initDigitalInput()
	{
		if (digitalInput != null)
			return;

		digitalInput = new DigitalInput();


		digitalInput.Attach += OnDigitalInputAttached;
		digitalInput.Detach += OnDigitalInputDettached;
		digitalInput.Error += digitalInput_error;
		digitalInput.StateChange += OnDigitalInputProprtyChange;


		digitalInput.Open();

	}

	// This Method is called if the function/method DeinitEncoder is invoked by the user or a bound event.
	// Return true, if this component has to be revalidated!
	public bool OnDeinitEncoder(int arg)
	{
		if (encoderOne != null)
			encoderOne.Close();

		encoderOne = null;
		return false;
	}

	// This Method is called if the function/method deInitDigitalInput is invoked by the user or a bound event.
	// Return true, if this component has to be revalidated!
	public bool OndeInitDigitalInput(int arg)
	{
		if (digitalInput != null)
			digitalInput.Close();

		digitalInput = null;
		return false;
	}




}