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

public class Horn : MonoBehaviour
{

    public Transform trans;
    public PlayerManagement pm;
    private bool HornOnMouth = false;
    private float startTime;
    private AudioSource hornFX;
    private float startVolume;
    public SteamVR_Action_Vibration hapticAction;


    private void Start()
    {
        hornFX = GetComponent<AudioSource>();
        startVolume = hornFX.volume;
    }


    // Set the horn back to it's position
    public void Release()
    {
        transform.position = trans.position;
        transform.rotation = trans.rotation;

        Rigidbody rbHandler = GetComponent<Rigidbody>();
        rbHandler.velocity = Vector3.zero;
        rbHandler.angularVelocity = Vector3.zero;
    }

    public void CountBlowingTime()
    {
        if (HornOnMouth)
        {
            hornFX.volume = startVolume;
            startTime = Time.time;
            hornFX.Play();
            Pulse(5, 160, 1, SteamVR_Input_Sources.RightHand);
        }
    }

    public void BlowingHorn()
    {
        if (HornOnMouth)
        {
            float timeSpentBlowing = Time.time - startTime;

            if ((pm.BraveryGauge >= pm.BraveryGaugeLimit) && timeSpentBlowing >= 4.0f)
            {
                pm.RingTheHorn();
            }
            // Fade horn sound out
            else
            {
                StartCoroutine(FadeOut());
            }
        }
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.tag == "PlayerHead")
        {
            HornOnMouth = true;
            CountBlowingTime();
        } 
    }

    private void OnTriggerExit(Collider other)
    {
        if (other.gameObject.tag == "PlayerHead")
        {
            BlowingHorn();
            HornOnMouth = false;
        }

        // Fade horn if playing
        if (hornFX.isPlaying)
        {
            StartCoroutine(FadeOut());
        }

    }

    private IEnumerator FadeOut()
    {
        while (hornFX.volume > 0)
        {
            hornFX.volume -= startVolume * Time.deltaTime / 0.5f;

            yield return null;
        }
        Pulse(1, 0, 0, SteamVR_Input_Sources.RightHand);
        hornFX.Stop();
        hornFX.volume = startVolume;

    }

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

}