using Unity.Cinemachine;
using UnityEngine;
using UnityEngine.EventSystems;

namespace BrewMonster
{
    public class CameraController : MonoBehaviour, IPointerDownHandler, IPointerUpHandler, IDragHandler
    {
        public static CameraController Instance;
        [SerializeField]private CinemachineCamera _cinemachineCamera;
        [SerializeField]private CinemachineOrbitalFollow orbital;
        private Vector2 currentPos;
        private bool fingerDown = false;
        Vector2 delta = Vector2.zero;  
        public float minSwipeDistance = 10f;
        public float speedX = 1f;
        public float speedY = 1f;

        public CinemachineOrbitalFollow Orbital { get => orbital;}

        void OnEnable()
        {
            Instance = this;
#if UNITY_EDITOR
            speedX = 500; 
#endif
        }

        //public void OnDrag(PointerEventData eventData)
        //{
        //    delta = eventData.position - currentPos;

        //    if (delta.magnitude >= minSwipeDistance)
        //    {
        //        orbital.HorizontalAxis.Value += delta.x * speedX * Time.deltaTime;
        //        //orbital.HorizontalAxis.Value = Mathf.Clamp(orbital.HorizontalAxis.Value, -360f, 360f);
        //        orbital.VerticalAxis.Value -= delta.y * speedY * Time.deltaTime;
        //        orbital.VerticalAxis.Value = Mathf.Clamp(orbital.VerticalAxis.Value, -360f, 360f);
        //    }
        //    currentPos = eventData.position;
        //}

        public void OnDrag(PointerEventData eventData)
        {
            Vector2 newDelta = eventData.position - currentPos;

            float velocity = newDelta.magnitude / Time.deltaTime; // tốc độ vuốt

            if (newDelta.magnitude >= minSwipeDistance)
            {
                float factor = velocity * 0.001f; // scale lại cho hợp lý

                orbital.HorizontalAxis.Value += newDelta.x * speedX * factor;
                orbital.VerticalAxis.Value -= newDelta.y * speedY * factor;

                orbital.VerticalAxis.Value = Mathf.Clamp(orbital.VerticalAxis.Value, -360f, 360f);
            }

            currentPos = eventData.position;
        }

        public void OnPointerDown(PointerEventData eventData)
        {
            currentPos = eventData.position;
            fingerDown = true;
        }

        public void OnPointerUp(PointerEventData eventData)
        {
            fingerDown = false;
        }

        private void Update()
        {
            //todo: should not always update
            if (_cinemachineCamera.Follow == null && CECGameRun.Instance.GetHostPlayer() != null)
            {
                if(CECGameRun.Instance.GetHostPlayer().PointCam != null)
                {
                    _cinemachineCamera.Follow = CECGameRun.Instance.GetHostPlayer().PointCam;
                    _cinemachineCamera.ForceCameraPosition(CECGameRun.Instance.GetHostPlayer().PointCam.position, Quaternion.identity);
                    orbital.HorizontalAxis.Value = 208;
                    orbital.VerticalAxis.Value = -268;
                }
                else
                {
                    _cinemachineCamera.Follow = CECGameRun.Instance.GetHostPlayer().transform;
                    _cinemachineCamera.ForceCameraPosition(CECGameRun.Instance.GetHostPlayer().ObjectPosition, Quaternion.identity);
                    orbital.HorizontalAxis.Value = 208;
                    orbital.VerticalAxis.Value = -268;
                }
            }
        }
    }
}