using UnityEngine;
using Unity.Cinemachine;
using System.Collections;
using Pixelplacement;

public class cameraSwitcherNailBird : MonoBehaviour
{
    [SerializeField] private CinemachineCamera virtualCamera;
    [SerializeField] private CinemachineConfiner2D confiner2D;
    [SerializeField] private float zoomOutOrthoSize = 27f;
    [SerializeField] private float normalOrthoSize = 20f;
    [SerializeField] private float transitionDuration = 0.5f; // Duration of the transition
    

    private int playerInsideCount = 0;
    private Coroutine zoomCoroutine;

    private void OnTriggerEnter2D(Collider2D other)
    {
        if (other.CompareTag("Player"))
        {
            playerInsideCount++;
            if (playerInsideCount == 1 && virtualCamera != null)
            {
                if (zoomCoroutine != null) StopCoroutine(zoomCoroutine);
                zoomCoroutine = StartCoroutine(SmoothOrthoSize(virtualCamera, zoomOutOrthoSize, transitionDuration));
            }
        }
    }

    private void OnTriggerExit2D(Collider2D other)
    {
        if (other.CompareTag("Player"))
        {
            playerInsideCount--;
            if (playerInsideCount == 0 && virtualCamera != null)
            {
                if (zoomCoroutine != null) StopCoroutine(zoomCoroutine);
                zoomCoroutine = StartCoroutine(SmoothOrthoSize(virtualCamera, normalOrthoSize, transitionDuration));
            }
        }
    }

    private IEnumerator SmoothOrthoSize(CinemachineCamera cam, float targetSize, float duration)
    {
        float startSize = cam.Lens.OrthographicSize;
        float elapsed = 0f;
        while (elapsed < duration)
        {
            elapsed += Time.deltaTime;
            cam.Lens.OrthographicSize = Mathf.Lerp(startSize, targetSize, elapsed / duration);
            if (confiner2D != null)
            {
                confiner2D.InvalidateBoundingShapeCache();
            }
            yield return null;
        }
        cam.Lens.OrthographicSize = targetSize;
        if (confiner2D != null)
        {
            confiner2D.InvalidateBoundingShapeCache();
        }
    }
}