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

public class Bow : MonoBehaviour
{
    [Header("Assets")]
    public GameObject m_ArrowPrefab = null;
    public GameObject m_Quiver = null;


    [Header("Bow")]
    public float m_GrabThreshold = 0.15f;
    public Transform m_Start = null;
    public Transform m_End = null;
    public Transform m_Socket = null;
    public AudioSource m_bowShootingSound;

    private Transform m_PullingHand = null;
    private Arrow m_CurrentArrow = null;
    private bool m_ArrowInstanciated = false;
    private Animator m_Animator = null;
    private ArcPrediction m_Predictor = null;
    private float m_ArrowReleaseTreshold = 0.15f;
    private bool isBeingPulled = false;
    public SteamVR_Action_Vibration hapticAction;

    private float m_PullValue = 0.0f;

    private void Awake()
    {
        m_Predictor = GetComponent<ArcPrediction>();
        m_Predictor.HideArc();
        m_Animator = GetComponent<Animator>(); 
    }

    private void Start()
    {
        StartCoroutine(CreateArrow(0.0f));
        Physics.IgnoreLayerCollision(6, 6);
    }

    private void Update()
    {
        if (!m_PullingHand || !m_CurrentArrow)
            return;

        m_PullValue = CalculatePull(m_PullingHand);
        m_PullValue = Mathf.Clamp(m_PullValue, 0.0f, 1.0f);

        if (m_PullValue > 0.2f)
        {
            if (!GameObject.Find("SFX/ArrowPull").GetComponent<AudioSource>().isPlaying && !isBeingPulled)
            {
                GameObject.Find("SFX/ArrowPull").GetComponent<AudioSource>().Play();
                isBeingPulled = true;
            }
        }
        else isBeingPulled = false;

        m_Animator.SetFloat("Blend", m_PullValue);
        if(m_PullValue > m_ArrowReleaseTreshold && GameManager.Instance.GetSubGameMode() == GameManager.SubGameMode.Arcade)
        {
            Pulse(0.1f, m_PullValue * 160, m_PullValue, SteamVR_Input_Sources.RightHand);
            Pulse(0.1f, m_PullValue * 160, m_PullValue, SteamVR_Input_Sources.LeftHand);
            m_Predictor.RenderArc(m_PullValue * m_CurrentArrow.m_MaxLaunchSpeedMeterPerSecond, 20, m_CurrentArrow.m_Rigidbody.rotation * Vector3.down);
        } else
        {
            m_Predictor.HideArc();
        }
    }

    private float CalculatePull(Transform pullHand)
    {
        Vector3 direction = m_End.position - m_Start.position;
        float magnitude = direction.magnitude;

        direction.Normalize();
        Vector3 difference = pullHand.position - m_Start.position;

        return Vector3.Dot(difference, direction) / magnitude;
    }

    private IEnumerator CreateArrow(float waitTime)
    {
        // Set the boolean to true
        m_ArrowInstanciated = true;

        // Wait
        yield return new WaitForSeconds(waitTime);

        // Create, child
        GameObject arrowObject = Instantiate(m_ArrowPrefab, m_Quiver.transform);

        // Orient
        arrowObject.transform.localPosition = new Vector3(m_Quiver.transform.localPosition.x - 0.1f, m_Quiver.transform.localPosition.y + 1.5f, m_Quiver.transform.localPosition.z + 0.45f);
        arrowObject.transform.localEulerAngles = Vector3.zero;
    }

    // Simple approach, think about possibly adding an interaction system
    public void Pull(Transform hand)
    {

        float distance = Vector3.Distance(hand.position, m_Start.position);

        if (distance > m_GrabThreshold)
            return;

        m_PullingHand = hand;
    }

    public void Release()
    {
        if (m_PullValue > m_ArrowReleaseTreshold)
        {
            FireArrow();
            m_Predictor.HideArc();
        }


        m_PullingHand = null;

        m_PullValue = 0;
        m_Animator.SetFloat("Blend", 0);

        if ((!m_CurrentArrow && !m_ArrowInstanciated) || (m_ArrowInstanciated && !m_CurrentArrow))
        {
            Destroy(GameObject.FindGameObjectWithTag("arrow") );
            StartCoroutine(CreateArrow(0.1f));
            m_ArrowInstanciated = false;
            m_CurrentArrow = null;
        }
    }

    private void FireArrow()
    {
        m_CurrentArrow.Fire(m_PullValue, m_bowShootingSound);
        m_CurrentArrow = null;
        m_ArrowInstanciated = false;

        // Vibration [Removed by Joud: I added vibration depending on the pull value of the bow]
        // InputDevice m_left_controller = UnityEngine.XR.InputDevices.GetDeviceAtXRNode(UnityEngine.XR.XRNode.LeftHand);
        // InputDevice m_right_controller = UnityEngine.XR.InputDevices.GetDeviceAtXRNode(UnityEngine.XR.XRNode.RightHand);
        // if (m_left_controller.TryGetHapticCapabilities(out HapticCapabilities capabilities))
        // if (capabilities.supportsImpulse)
        // m_left_controller.SendHapticImpulse(0, 0.5f, 0.5f);
        // if (m_right_controller.TryGetHapticCapabilities(out HapticCapabilities capabilitiesRight))
        // if (capabilitiesRight.supportsImpulse)
        // m_right_controller.SendHapticImpulse(0, 1f, 0.2f);
    }

    private void OnTriggerEnter(Collider other)
    {
        if(other.gameObject.tag == "arrow")
        {
            gameObject.GetComponent<SphereCollider>().enabled = false;
            bool hasHayOn = other.gameObject.GetComponent<Arrow>().hasHayOn;
            bool onFire = other.gameObject.GetComponent<Arrow>().onFire;
            Destroy(other.gameObject);
            LockArrowOnBow(hasHayOn, onFire);
        }
    }

    private void LockArrowOnBow(bool hasHayOn, bool onFire)
    {
        GameObject.Find("SFX/ArrowFixedOnBow").GetComponent<AudioSource>().Play();
        GameObject arrowObject = Instantiate(m_ArrowPrefab, m_Socket);
        arrowObject.GetComponent<Rigidbody>().isKinematic = true;
        arrowObject.GetComponent<Rigidbody>().detectCollisions = false;
        arrowObject.tag = "Untagged";
        arrowObject.transform.localPosition = new Vector3(0, 0, 0.425f);
        arrowObject.transform.Rotate(270.0f, 0, 0, Space.Self);
        //arrowObject.transform.localEulerAngles = Vector3.zero;
        m_CurrentArrow = arrowObject.GetComponent<Arrow>();
        gameObject.GetComponent<SphereCollider>().enabled = true;

        if (hasHayOn) arrowObject.GetComponent<Arrow>().AddHayOnTip();
        if (onFire)
        {
            Arrow arrowScript = arrowObject.GetComponent<Arrow>();
            arrowScript.ActivateFireFX();
            arrowScript.onFire = true;
        } 
    }

    private void Pulse(float duration, float frequency, float amplitude, SteamVR_Input_Sources source)
    {
        hapticAction.Execute(0, duration, frequency, amplitude, source);
    }
}