using Framework;
using UnityEngine;
using UnityEngine.EventSystems;

[ExecuteAlways]
public class CameraController : MonoBehaviour
{
    public static CameraController Instance => _instance;
    public static CameraData Data => Instance?.cameraData;
    public CameraData CameraData => cameraData;
    public Camera MainCamera => cameraData?.MainCamera;

    private CameraData cameraData;
    private ICameraLogic cameraLogic;
    private static CameraController _instance;

    #region MainLife

    private void Awake()
    {
        _instance = this;
        cameraData = gameObject.AddComponent<CameraData>();
        cameraData.InitializeCamera();
        cameraLogic = CameraLogicFactory.CreateCameraLogic(cameraData);

        if (cameraLogic == null)
        {
            Debug.LogError("Failed to create camera logic through factory");
        }
    }

    private void OnEnable()
    {
        if (Application.isPlaying)
        {
            //InputManager.Instance.OnFingerMove += OnFingerMove2;
            EventManager.Instance.Register<PointerEventData>(EventManager.EventName.Level_OnDrag, _OnDragMove);
            EventManager.Instance.Register<PointerEventData>(EventManager.EventName.Level_OnEndDrag, _OnEndDrag);
            InputManager.Instance.OnFingersMove += _OnFingersMove;
        }
    }

    private void OnDisable()
    {
        if (Application.isPlaying)
        {
            EventManager.Instance.Unregister<PointerEventData>(EventManager.EventName.Level_OnDrag, _OnDragMove);
            EventManager.Instance.Unregister<PointerEventData>(EventManager.EventName.Level_OnEndDrag, _OnEndDrag);
            if (InputManager.Instance == null) return;
            InputManager.Instance.OnFingersMove -= _OnFingersMove;
        }
    }

    private void OnDestroy()
    {
        if (_instance == this)
        {
            _instance = null;
        }
    }

    private void Update()
    {
        if (cameraLogic != null)
        {
            cameraLogic.Update();
        }
    }

    private void _OnFingersMove(float delta)
    {
        cameraLogic?.OnFingersMove(delta);
    }

    private void _OnEndDrag(PointerEventData pointerData)
    {
        cameraLogic?.OnEndDrag(pointerData);
    }

    private void _OnDragMove(PointerEventData pointerData)
    {
        cameraLogic?.OnDragMove(pointerData);
    }

    #endregion

    #region 接口

    public void KeepCenter(Vector3 centerPos)
    {
        cameraLogic?.KeepCenter(centerPos);
    }

    public void CampKeepCenter(Vector3 centerPos)
    {
        cameraLogic?.CampKeepCenter(centerPos);
    }

    public void InitializeCameraPosition(Vector3 targetPosition, MapData.CameraInfo cameraInfo = null)
    {
        cameraLogic?.InitializeCameraPosition(targetPosition, cameraInfo);
    }

    public void AdjustSelf()
    {
        cameraLogic?.AdjustSelf();
    }

    public void SetCameraFOVSize(float initialFOV)
    {
        cameraLogic?.SetCameraFOVSize(initialFOV);
    }

    public void RecordStartPos()
    {
        cameraLogic?.RecordStartPos();
    }

    public void ResetToStartPos(float during = 0.3f)
    {
        cameraLogic?.ResetToStartPos(during);
    }

    #endregion

    #region 静态访问属性

    public static bool FingerMoveEnable
    {
        get => Data?.FingerMoveEnable ?? true;
        set
        {
            if (Data != null)
                Data.FingerMoveEnable = value;
        }
    }

    #endregion
}