using MMMaellon.LightSync;
using UdonSharp;
using UnityEngine;
using CameraSystem;
using VRC.Udon.Common;


[UdonBehaviourSyncMode(BehaviourSyncMode.Manual)]
public class CameraAnchor : UdonSharpBehaviour
{
	[SerializeField] private CameraSystem_Console CameraSystemManager;
	[Space]
	[SerializeField] private float FOV = 60.0f;
	[SerializeField] private float NearClippingPlane = 0.3f;
	[SerializeField] private float FarClippingPlane = 1000.0f;
	[Space]
	[Tooltip("Changing the Z scale of this object will change the FOV of the attached camera.")]
	[SerializeField] private Transform CameraRoot;

	[UdonSynced] private int _AttachedCameraIndex = -1;

	private Camera _AttachedCamera = null;


	void LateUpdate()
	{
		if (_AttachedCamera)
		{
			if (CameraRoot.childCount <= 0)
			{
				_AttachedCamera = null;
			}
			else
			{
				_AttachedCamera.fieldOfView = FOV * CameraRoot.transform.localScale.z;
			}
		}
	}

	public override void OnDeserialization(DeserializationResult Result)
	{
		_AttachCamera_Synced();

		base.OnDeserialization(Result);
	}


	public void AttachCamera(Camera CameraComponent)
	{
		if (CameraSystemManager == null)
		{
			Debug.LogError("[CameraAnchor] No CameraSystemManager set for " + gameObject.name + "; can't find a camera without it");
			return;
		}

		for (int i = 0; i < CameraSystemManager.camerasObjects.Length; i++)
		{
			if (CameraSystemManager.camerasObjects[i] == CameraComponent)
			{
				Debug.Log("[CameraAnchor] Attaching camera " + i + " to anchor " + gameObject.name);
				_AttachedCameraIndex = i;
				_AttachCamera_Synced();
				RequestSerialization();
				break;
			}
		}
	}


	private void _AttachCamera_Synced()
	{
		_AttachedCamera = CameraSystemManager.camerasObjects[_AttachedCameraIndex];
		_AttachedCamera.gameObject.SetActive(true);
		_AttachedCamera.transform.parent = CameraRoot;
		_AttachedCamera.fieldOfView = FOV;
		_AttachedCamera.nearClipPlane = NearClippingPlane;
		_AttachedCamera.farClipPlane = FarClippingPlane;
		_AttachedCamera.GetComponent<LightSync>().TeleportToLocalSpace(Vector3.zero, Quaternion.identity, true);
	}


#if UNITY_EDITOR
	private void OnDrawGizmos()
	{
		Gizmos.DrawIcon(transform.position, "CameraAnchor", true);
	}
#endif
}