using System;
using AibisDream.Framework;
using AibisDream.Utility;
using UnityEngine;
using UnityEngine.EventSystems;

namespace AibisDream
{
    public class MinHand : MonoBehaviour, IInteraction
    {
        #region 索引

        private EventTriggerEx _trigger;

        public event Action<float> OnMinHandChanged;
        public event Action OnMinHandReached;

        #endregion

        #region 参数

        public float rotationSpeedLimit = 10f; // 旋转速度限制（度/秒）
        public float rotationThreshold = 30f; // 触发事件的角度阈值（度）

        #endregion

        private void Awake()
        {
            _trigger = GetComponent<EventTriggerEx>();
            _trigger.Register(EventTriggerType.Drag, OnDrag);

            EventSystemEx.Instance.isLocked = false;
        }

        private void OnDrag(BaseEventData data)
        {
            // 这里是一些阻碍拖动的情况
            if (!IsActive) return;
            
            if (data is not PointerEventData pointerData) return;
            
            // 计算鼠标位置与分针中心点的向量
            Vector2 worldPoint = CommonUtil.GetMouseWorldPos(pointerData.position);
            Vector2 direction = worldPoint - new Vector2(transform.position.x, transform.position.y);
            // 计算当前角度
            float mouseAngle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;
            float currentAngle = CommonUtil.Angle360(mouseAngle - 90);
            
            // 计算角度差
            float deltaAngle = Mathf.DeltaAngle(transform.eulerAngles.z, currentAngle);
            // 限制旋转方向（仅允许逆时针旋转）
            if (deltaAngle < 0)
            {
                deltaAngle = 0;
            }

            // 限制旋转速度
            if (Mathf.Abs(deltaAngle) > rotationSpeedLimit * Time.deltaTime)
            {
                deltaAngle = rotationSpeedLimit * Time.deltaTime;
            }

            // 更新分针的旋转
            transform.Rotate(0, 0, deltaAngle);
            
            OnMinHandChanged?.Invoke(transform.eulerAngles.z);

            // 触发事件
            if (transform.eulerAngles.z >= rotationThreshold)
            {
                // 触发事件逻辑
                Debug.Log("Rotation threshold reached!");
                IsActive = false;
                OnMinHandReached?.Invoke();
            }
        }

        #region 交互属性

        public bool IsActive { get; set;}
        public bool IsAvailable => true;
        public GameObject GetGameObject()
        {
            return gameObject;
        }

        #endregion
    }
}