using UnityEngine;
using DG.Tweening;
[RequireComponent(typeof(Camera))]
public class CameraEffects : MonoBehaviour
{
    public static CameraEffects instance;
    Camera cam;

    [SerializeField]private float stretchFactor = 0;
    [SerializeField]private bool isBeingStretched = false;
    [SerializeField]private float minFov = 5;
    [SerializeField]private float maxFov = 10;
    [SerializeField]private float fovSpeed = 10;
    [SerializeField] private float bounceDuration = 0.35f;
    [SerializeField] private float bounceElasticity = 0.7f;
    [SerializeField] private float bounceOvershoot = 0.2f;
    void Awake()
    {
        instance = this;
        cam = Camera.main;
    }
    
    void Update()
    {
        if(isBeingStretched){
            float targetFov = minFov + stretchFactor * (maxFov - minFov);
            cam.orthographicSize = Mathf.Lerp(cam.orthographicSize, targetFov, Time.deltaTime * fovSpeed);
        }
    }
    
    public void SetStretchFactor(float stretchFactor){
        this.stretchFactor = stretchFactor;
        isBeingStretched = true;
    }

   

    public void ReleaseStretchFactor(){
        stretchFactor = 0;
        isBeingStretched = false;
        cam.DOOrthoSize(minFov, bounceDuration)
            .SetEase(Ease.OutElastic, bounceElasticity, bounceOvershoot)
            .OnComplete(() => {
                stretchFactor = 0;
            });
    }

}