using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CurtainBehaviour : MonoBehaviour
{
    [SerializeField] private Cloth curtainCloth;
    public float fadeSpeed = 2.0f;        // The speed at which to fade towards the external acceleration
    public float fadeDelay = 1.0f;        // Optional delay before starting the fading process

    [Tooltip("BECAREFUL if used at start then there will be no forces applied if the dev has (ApplyAccelerationToCurtainAtStart) bool TRUE as well")]
    public bool ZeroAccelerationToCurtainsAtStart;
    public bool ApplyAccelerationToCurtainAtStart;

    public Vector3 targetExternalAccelerationToCurtain;
    public Vector3 targetRandomAccelerationToCurtain;

    public float lerpToTarget = 0;

    Coroutine accelerationFadeIn;
    Coroutine accelerationFadeOut;

    //private void Awake()
    //{
    //    curtainCloth.externalAcceleration = new Vector3(curtainCloth.externalAcceleration.x, 1000f, curtainCloth.externalAcceleration.z);
    //}

    // Start is called before the first frame update
    void Start()
    {
  

        if (ZeroAccelerationToCurtainsAtStart) 
        {
            curtainCloth.externalAcceleration = Vector3.zero;
            curtainCloth.randomAcceleration = Vector3.zero;
        }

        StartCoroutine(AtStartOfGame());

        if (ApplyAccelerationToCurtainAtStart)
        {
            StartRandomAccelerationToCurtain();
        }
    }

    public void FixCurtains() 
    {
        StartCoroutine(AtStartOfGame());
    }

    IEnumerator AtStartOfGame()
    {
        curtainCloth.externalAcceleration = new Vector3(curtainCloth.externalAcceleration.x, 3000f, curtainCloth.externalAcceleration.z);
        print("Skato kourtines");
        yield return new WaitForSeconds(0.1f);
        curtainCloth.externalAcceleration = new Vector3(curtainCloth.externalAcceleration.x, 0f, curtainCloth.externalAcceleration.z);
    }

    public void StartRandomAccelerationToCurtain() 
    {
        print("Started acceleration to curtain");
        accelerationFadeIn = StartCoroutine(AccelerationToCurtainFadeIn());
        if (accelerationFadeOut != null)
        {
            StopCoroutine(accelerationFadeOut);
            accelerationFadeOut = null;
        }
    }

    public void StopRandomAccelerationToCurtain() 
    {
        print("Stopping acceleration to curtain");
        accelerationFadeOut = StartCoroutine(AccelerationToCurtainFadeOut());
        if (accelerationFadeIn != null)
        {
            StopCoroutine(accelerationFadeIn);
            accelerationFadeOut = null;
        }
    }

    IEnumerator AccelerationToCurtainFadeIn() 
    {
        lerpToTarget = 0f;
        float transitionTime = 1;
        yield return new WaitForSeconds(0f);

        while (lerpToTarget <= transitionTime)
        {
            lerpToTarget += Time.deltaTime;
            float normalizedTime = Mathf.Clamp01(lerpToTarget / transitionTime);
            // Update the current target position towards the externalAcceleration
            curtainCloth.externalAcceleration = Vector3.Lerp(curtainCloth.externalAcceleration, targetExternalAccelerationToCurtain, normalizedTime);
            curtainCloth.randomAcceleration = Vector3.Lerp(curtainCloth.externalAcceleration, targetRandomAccelerationToCurtain, normalizedTime);

            yield return null;
        }

        // Ensure the final value is exactly the externalAcceleration to avoid slight discrepancies
        curtainCloth.externalAcceleration = targetExternalAccelerationToCurtain;
        curtainCloth.randomAcceleration = targetRandomAccelerationToCurtain;
    }

    IEnumerator AccelerationToCurtainFadeOut()
    {
        lerpToTarget = 0f;
        float transitionTime = 1;
        yield return new WaitForSeconds(0f);

        while (lerpToTarget <= transitionTime)
        {
            lerpToTarget += Time.deltaTime;
            float normalizedTime = Mathf.Clamp01(lerpToTarget / transitionTime);
            // Update the current target position towards the externalAcceleration
            curtainCloth.externalAcceleration = Vector3.Lerp(curtainCloth.externalAcceleration, Vector3.zero, transitionTime);
            curtainCloth.randomAcceleration = Vector3.Lerp(curtainCloth.externalAcceleration, Vector3.zero, transitionTime);

            yield return null;
        }

        // Ensure the final value is exactly the externalAcceleration to avoid slight discrepancies
        curtainCloth.externalAcceleration = Vector3.zero;
        curtainCloth.randomAcceleration = Vector3.zero;
    }

}