using UnityEngine;

public class CameraTargetFollower : MonoBehaviour
{
    private Transform _targetTransform;
    private bool _isFollow;

    public Transform GetTarget() => _targetTransform;

    public static CameraTargetFollower CreateTarget()
    {
        var target = new GameObject("TargetFollow");
        var follower = target.AddComponent<CameraTargetFollower>();
        return follower;
    }

    public void SetTarget(Transform target, bool instantTransition = false)
    {
        _targetTransform = target;

        if(instantTransition)
            transform.SetPositionAndRotation(
                target.transform.position,
                Quaternion.LookRotation(target.forward)
            );

        _isFollow = true;
    }

    private void FixedUpdate()
    {
        if (_targetTransform == null || !_isFollow)
            return;

        UpdateTargetPosition();
    }

    private void UpdateTargetPosition()
    {
        transform.SetPositionAndRotation(
            Vector3.MoveTowards(transform.position, _targetTransform.position, Time.fixedDeltaTime * 30f),
            Quaternion.Lerp(transform.rotation, Quaternion.LookRotation(_targetTransform.forward),
                Time.fixedDeltaTime * 30f)
        );
    }
}