using UnityEngine;
using System.Collections;
using Valve.VR;
using System;

public class WandController : MonoBehaviour {
    private Valve.VR.EVRButtonId gripButton = Valve.VR.EVRButtonId.k_EButton_Grip; //Essentially this is accessing
                                                                                   //SteamVR_TrackedObject.cs and telling our script
                                                                                   //and defining it here.


    private Valve.VR.EVRButtonId triggerButton = Valve.VR.EVRButtonId.k_EButton_SteamVR_Trigger;
    private Valve.VR.EVRButtonId Touchpad = Valve.VR.EVRButtonId.k_EButton_SteamVR_Touchpad;

    private SteamVR_Controller.Device controller { get { return SteamVR_Controller.Input((int)trackedObj.index); } }
    private SteamVR_TrackedObject trackedObj;

    SteamVR_Controller.Device device;
    SteamVR_TrackedObject MotionControl;

    Vector2 touchpadLoc; //Touchpad location.

    private Vector2 Up = new Vector2(0, 1);

    private GameObject pickup;

    // Use this for initialization
    void Start ()
    {
        MotionControl = gameObject.GetComponent<SteamVR_TrackedObject>();
        trackedObj = GetComponent<SteamVR_TrackedObject>();
    }

    // Update is called once per frame
    void Update()
    {
        if (controller == null)
        {
            Debug.Log("Controller not initalized");
            return;
        }

        if (controller.GetPressDown(gripButton) && pickup != null)
        {
            pickup.transform.parent = this.transform;
            pickup.GetComponent<Rigidbody>().isKinematic = true;
        }
        if (controller.GetPressUp(gripButton) && pickup != null)
        {
            pickup.transform.parent = null;
            pickup.GetComponent<Rigidbody>().isKinematic = false;
            Debug.Log("Grip button was unpressed");
        }

        device = SteamVR_Controller.Input((int)controller.index);
        //If finger is on touchpad
        if (device.GetTouch(SteamVR_Controller.ButtonMask.Touchpad))
        {
            //Read the touchpad values
            touchpadLoc = device.GetAxis(EVRButtonId.k_EButton_SteamVR_Touchpad);
            //Debug.Log(touchpadLoc);

            double targetUpXOld = 0.0; //Old target up value.
            float targetUpX = (float)targetUpXOld;

            double targetUpYOld = 0.8;
            float targetUpY = (float)targetUpYOld;

            Vector2 targetUp = new Vector2(targetUpX, targetUpY);

            if (Vector2.Distance(touchpadLoc, targetUp) < .15) //If the distance between finger (touchpadLoc) and the up zone (targetUp) is more than 0 do something.
            {
                Debug.Log("Up position met.");
            }

            double targetDownXOld = -0.0; //Old target up value.
            float targetDownX = (float)targetUpXOld;

            double targetDownYOld = -0.8;
            float targetDownY = (float)targetUpYOld;

            Vector2 targetDown = new Vector2(targetUpX, targetUpY);

            if (Vector2.Distance(touchpadLoc, targetDown) > .15)
            {
                Debug.Log("Down position met.");
            }
        }
    }
    private void OnTriggerEnter(Collider collider)
    {
        pickup = collider.gameObject;
    }
    private void OnTriggerExit(Collider collider)
    {
        pickup = null;
    }
}