using System.Collections;
using UnityEngine;
using UnityEngine.InputSystem;

public class CameraController : MonoBehaviour
{
    [SerializeField]
    private Camera _cam;
    
    [SerializeField]
    private InputAction pressed, axis, scroll;
    
    private float speed = 1f;
    private Vector2 rotation;
    private float scrollVal;
    private bool canRotate;
    
    // Start is called before the first frame update
    void Awake()
    {
        pressed.Enable();
        axis.Enable();
        scroll.Enable();

        pressed.performed += _ => { StartCoroutine(Rotate()); };
        pressed.canceled += _ => { canRotate = false; };

        axis.performed += context => { rotation = context.ReadValue<Vector2>(); };
        axis.canceled += _ => { rotation = Vector3.zero; };
        
        scroll.performed += context =>
        {
            scrollVal = context.ReadValue<float>(); 
            ZoomIn();
        };
    }

    private void ZoomIn()
    {
        RaycastHit hit;
        if(scrollVal < 0 && Physics.Raycast(_cam.transform.position, transform.forward, out hit, 4))
            return;
        if(scrollVal < 0 || Vector3.Distance(_cam.transform.position, transform.position) < 20)
            _cam.transform.position += -scrollVal * transform.forward;
    }

    private IEnumerator Rotate()
    {
        canRotate = true;
        while (canRotate)
        {
            rotation *= speed;
            transform.Rotate(Vector3.up, rotation.x);
            transform.Rotate(transform.right, -rotation.y, Space.World);
            yield return null;
        }
    }
}