using DG.Tweening;
using UnityEngine;

public class AquariumCameraMove : MonoBehaviour
{
    int layerMask;

    //屏幕拖动比例
    float dragCameraScale = 0.03f;
    private Vector3 initialRotation;
    Vector3 _curMousePos;
    Vector3 _offsetEuler;
    Quaternion targetRotation;
    Vector2 cameraOffset;
    Quaternion startRot;
    float duration = 0.65f;
    FishingAquariumAct fishingAquariumAct;
    GameObject curClick;
    private void Awake()
    {
        layerMask = 1 << LayerMask.NameToLayer("fish");
        startRot = transform.rotation;
    }
    public void Init(Vector2 cameraOffset, FishingAquariumAct fishingAquariumAct)
    {
        this.fishingAquariumAct = fishingAquariumAct;
        this.cameraOffset = cameraOffset;
    }

    float CheckAngle(float value)
    {
        float angle = value - 180;

        if (angle > 0)
            return angle - 180;

        return angle + 180;
    }

    private void LateUpdate()
    {
        if (Input.GetMouseButtonDown(0) && fishingAquariumAct.CanDragMove())
        {
            transform.DOKill();
            _curMousePos = Input.mousePosition;
            _offsetEuler = Vector3.zero;
            initialRotation = transform.rotation.eulerAngles;
            initialRotation.x = CheckAngle(initialRotation.x);
            initialRotation.y = CheckAngle(initialRotation.y);
            targetRotation = transform.rotation;
            curClick = SelectTarget();
        }
        else if (Input.GetMouseButton(0) && fishingAquariumAct.CanDragMove())
        {
            Vector3 ver = Input.mousePosition - _curMousePos;
            if (ver.magnitude > 5)
            {
                _offsetEuler.x -= ver.y * dragCameraScale;
                _offsetEuler.y += ver.x * dragCameraScale;
                var targetEulerAngles = initialRotation + _offsetEuler;

                // Clamp the rotation angles
                targetEulerAngles.x = Mathf.Clamp(targetEulerAngles.x, -cameraOffset.x, cameraOffset.x);
                targetEulerAngles.y = Mathf.Clamp(targetEulerAngles.y, -cameraOffset.y, cameraOffset.y);
                targetEulerAngles.z = 0;
                _offsetEuler = targetEulerAngles - initialRotation;

                targetRotation = Quaternion.Euler(targetEulerAngles);
                //transform.rotation = targetRotation;
                _curMousePos = Input.mousePosition;
            }
            transform.rotation = Quaternion.Angle(targetRotation, transform.rotation) > 0.1f
                ? Quaternion.Lerp(transform.rotation, targetRotation, 0.2f)
                : targetRotation;
        }
        else if (Input.GetMouseButtonUp(0))
        {
            transform.DORotateQuaternion(startRot, duration);
            GameObject localClick = SelectTarget();
            if (localClick != null && localClick == curClick)
            {
                var fish = curClick.GetComponentInParent<AquariumFishBase>();
                fishingAquariumAct.OnClickFish(fish.slotData.index);
                curClick = null;
            }
        }

    }
    private GameObject SelectTarget()
    {
        var ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        if (Physics.Raycast(ray, out var hit, 100, layerMask))
        {
            //Debug.Log($"<color=#e94242>hit: {hit.collider.gameObject.layer}</color>");

            //if (hit.collider.gameObject.layer == layerMask)
            //{
                //Debug.Log($"<color=#e94242>hit position: {hit.point}</color>");
                return hit.collider.gameObject;
            //}
        }
        return null;
    }
}