using UnityEngine;
using DG.Tweening;

namespace Interaction
{
    public class LeverController : MonoBehaviour, IInteractable
    {
        [Header("组件设置")]
        [Tooltip("拉杆的旋转部分")]
        [SerializeField] private Transform leverTransform;

        [Header("角度设置 (局部 Z轴)")]
        [SerializeField] private float onAngle = 40f;
        [SerializeField] private float offAngle = -40f;

        [Header("动画设置")]
        [SerializeField] private float duration = 1.0f;
        [SerializeField] private Ease animationEase = Ease.OutQuad;

        // 运行时状态
        private bool isOn = false; 

        private void Start()
        {
            if (leverTransform == null)
            {
                Debug.LogError("[LeverController] 未赋值 Lever Transform！请在 Inspector 中设置。");
                return;
            }

            // 1. 获取当前局部旋转 (Z轴)
            float currentZ = leverTransform.localEulerAngles.z;
            
            // 2. 角度标准化 (-180 到 180)
            if (currentZ > 180) currentZ -= 360;

            // 3. 初始状态判断 (谁近选谁)
            float distToOn = Mathf.Abs(Mathf.DeltaAngle(currentZ, onAngle));
            float distToOff = Mathf.Abs(Mathf.DeltaAngle(currentZ, offAngle));

            isOn = distToOn < distToOff;

            Debug.Log($"[Lever] 初始化完成 | 当前角度: {currentZ:F1} | 判定状态: {(isOn ? "开启 (On)" : "关闭 (Off)")}");
        }

        public void Interact()
        {
            if (leverTransform == null) return;
            
            Debug.Log($"<color=green>[Lever] 交互触发 | 切换前状态: {isOn}</color>");
            ToggleLever();
        }

        public void ToggleLever()
        {
            isOn = !isOn;

            // 目标角度
            float targetZ = isOn ? onAngle : offAngle;

            // 构造目标旋转 (保持 X, Y 为 0，仅旋转 Z)
            // 注意：如果你希望保留当前的 X/Y 倾斜，请改用: 
            // new Vector3(leverTransform.localEulerAngles.x, leverTransform.localEulerAngles.y, targetZ);
            Vector3 targetRotation = new Vector3(0, 0, targetZ);

            // 动画执行
            leverTransform.DOKill(); // 停止旧动画
            leverTransform.DOLocalRotate(targetRotation, duration)
                .SetEase(animationEase);
        }

        /// <summary>
        /// 获取当前交互提示文本
        /// </summary>
        public string GetInteractPrompt()
        {
            return isOn ? "关闭拉杆" : "开启拉杆";
        }
    }
}