using UnityEngine;

public class CameraFollow2D : MonoBehaviour
{
    [SerializeField]
    private float _damping = 1.5f;
    
    [SerializeField]
    private Vector3 _offset = new Vector3(2f, 1f);
    
    [SerializeField]
    private bool _faceLeft;
    
    private Transform _player;
    private float _lastX;

    private void Start()
    {
        _offset.x = Mathf.Abs(_offset.x);
        _player = GameObject.FindGameObjectWithTag("Player").transform;
        
        if (_player != null)
        {
            _lastX = _player.position.x;
            transform.position = GetTargetPosition();
        }
    }
    
    private void Update()
    {
        if(_player != null)
        {
            var currentX = _player.position.x;
            if (!currentX.Equals(_lastX))
                _faceLeft = currentX < _lastX;
            _lastX = currentX;
            var position = GetTargetPosition();
            transform.position = Vector3.Lerp(transform.position, position, _damping * Time.deltaTime);
        }
    }
    
    private Vector3 GetTargetPosition()
    {
        var offset = _offset;
        offset.x *= _faceLeft ? -1 : 1;
        var position = _player.position + offset;
        position.z = transform.position.z;
        return position;
    }
}