using UnityEngine;
using UnityEngine.InputSystem.Controls;

public class LeverController : MonoBehaviour
{
    public enum Axis
    {
        forward,
        right,
        up,
    }
    public Axis RotationAxis;
    public float maxAngle = 45f;  // ·¹¹öÀÇ ÃÖ´ë °¢µµ
    public float minAngle = -45f;  // ·¹¹öÀÇ ÃÖ¼Ò °¢µµ
    public float sensitivity = 0.2f;  // ¸¶¿ì½º ¿òÁ÷ÀÓ¿¡ ´ëÇÑ ¹Î°¨µµ
    private Vector3 rotationAxis;  // ȸÀüÃà (±âº»°ª: XÃà)

    private float currentAngle;
    private Vector3 lastMousePosition;


    /// <summary>
    /// µå·¡±× °¡´É ¿©ºÎ
    /// </summary>
    private bool isDragging = false;
    /// <summary>
    /// ·¹¹ö°¡ ¹Ø¿¡ ÀÖ´ÂÁö ¾Æ·¡ÀÖ´ÂÁö ÆÇ´Ü
    /// </summary>
    private bool isDown = false;
    private bool isRun = false;
    private float startMouseY;
    private float startAngle;


    private int layerMask;


    private  float time = 0;
    private Quaternion downTargetRos;
    private Quaternion upTargetRos;
    private float speed = 10;
    private void Start()
    {
        Quaternion q = transform.localRotation;
        layerMask = 1 << LayerMask.NameToLayer("Train");
        if (RotationAxis == Axis.forward)
        {
            rotationAxis = Vector3.forward;
            downTargetRos = q * Quaternion.Euler(0,0, maxAngle);
            upTargetRos =q * Quaternion.Euler(0, 0, minAngle);
            
        }
        else if (RotationAxis == Axis.right)
        {
            rotationAxis = Vector3.right;
            downTargetRos = q * Quaternion.Euler(maxAngle, 0, 0);
            upTargetRos = q * Quaternion.Euler(minAngle, 0, 0);
        }
        else if (RotationAxis == Axis.up)
        {
            rotationAxis = Vector3.up;
            downTargetRos = q * Quaternion.Euler(0, maxAngle, 0);
            upTargetRos = q * Quaternion.Euler(0, minAngle, 0);
        }

        currentAngle = GetCurrentAngle();
    }


    public void OnDrag()
    {
        isDragging = true;
        lastMousePosition = Input.mousePosition;
        currentAngle = GetCurrentAngle(); // ÇöÀç 
    }

    public void OffDrag()
    {
        isDragging = false;
    }

    public void OnClick()
    {
        isRun = true;
        isDown = !isDown;
    }

    private void Update()
    {
        if (isDragging)
        {
            Vector3 mouseDelta = Input.mousePosition - lastMousePosition;
            float angleDelta = mouseDelta.y * sensitivity;
            float newAngle = currentAngle - angleDelta;
            newAngle = Mathf.Clamp(newAngle, minAngle, maxAngle);

            ApplyRotation(newAngle);

            lastMousePosition = Input.mousePosition;
            currentAngle = newAngle;
        }
        if (isRun)
        {
            time = Time.deltaTime * speed;
            if (isDown)
            {
                transform.localRotation = Quaternion.Slerp(transform.localRotation, upTargetRos, time);
            }
            else
            {
                transform.localRotation = Quaternion.Slerp(transform.localRotation, downTargetRos, time);
            }

        }
    }

    private float GetCurrentAngle()
    {
        Vector3 currentRotation = transform.localRotation.eulerAngles;
        float angle = 0f;

        if (RotationAxis == Axis.forward)
            angle = currentRotation.z;
        else if (RotationAxis == Axis.right)
            angle = currentRotation.x;
        else if (RotationAxis == Axis.up)
            angle = currentRotation.y;

        // -180¿¡¼­ 180 »çÀÌÀÇ °¢µµ·Î º¯È¯
        if (angle > 180) angle -= 360;

        return angle;
    }

    private void ApplyRotation(float angle)
    {
        Vector3 currentRotation = transform.localRotation.eulerAngles;

        if (RotationAxis == Axis.forward)
            currentRotation.z = angle;
        else if (RotationAxis == Axis.right)
            currentRotation.x = angle;
        else if (RotationAxis == Axis.up)
            currentRotation.y = angle;

        transform.localRotation = Quaternion.Euler(currentRotation);
    }
}