using Newtonsoft.Json.Linq;
using UdonSharp;
using UnityEngine;
using VRC.Udon.Common;


[UdonBehaviourSyncMode(BehaviourSyncMode.Manual)]
public class CameraTimedSwitcher : UdonSharpBehaviour
{
	[SerializeField]	private CameraControllerBase _CameraController;
	[SerializeField]	private string[] _SwitchFunctions;
	[SerializeField]	private float[] _TimeBetweenCuts = { 5.0f };
	[Space]
	[SerializeField, Tooltip("When enabled, switcher will reset when activated, even if it wasn't deactivated first.")]
						private bool _AlwaysReactivate = false;
	[SerializeField]	private bool _Loop = true;
	[SerializeField, Tooltip("Loop to this point in the camera sequence. Default is index 0 (the beginning)")]
						private int _LoopPoint = 0;
	[Space]
	[SerializeField, Tooltip("Set this to call a function on an UdonSharpBehaviour instead of looping the camera sequence")]
						private UdonSharpBehaviour _FirstLoopCallbackObject = null;
	[SerializeField]	private string _FirstLoopCallbackFunction = "";

	[UdonSynced]		private bool _Active = false;

	private float _Timer = 0.0f;
	private bool _AwaitingNextSwitch = false;
	private int _NextCameraIndex = 0;
	private bool _LoopedOnce = false;


	void Update()
	{
		if (_Active && _AwaitingNextSwitch)
		{
			_Timer -= Time.deltaTime;
			if (_Timer <= 0.0f)
			{
				SwitchToNextCamera();
			}
		}
	}

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

		base.OnDeserialization(Result);
	}


	public void Activate(bool Activate)
	{
		if (_Active != Activate || _AlwaysReactivate)
		{
			_Active = Activate;
			_Activate_Synced();
			RequestSerialization();
		}
	}
	private void _Activate_Synced()
	{
		_AwaitingNextSwitch = false;

		if (_Active)
		{
			_NextCameraIndex = 0;
			_LoopedOnce = false;
			SwitchToNextCamera();
		}
		else
		{
			_Timer = 0.0f;
		}
	}
	

	public void SwitchToNextCamera()
	{
		_AwaitingNextSwitch = false;

		if (_Active)
		{
			int CurrentCameraIndex = _NextCameraIndex;
			Debug.Log("[CameraTimedSwitcher] Current camera index: " + CurrentCameraIndex);

			if (CurrentCameraIndex == _LoopPoint && _LoopedOnce)
			{
				if (_FirstLoopCallbackObject != null)
				{
					Debug.Log("[CameraTimedSwitcher] We're on a new loop and a callback is set; running function " + _FirstLoopCallbackFunction + " on object " + _FirstLoopCallbackObject.gameObject.name + " and deactivating");
					_FirstLoopCallbackObject.SendCustomEvent(_FirstLoopCallbackFunction);
					Activate(false);
					return;
				}
				if (!_Loop)
				{
					Debug.Log("[CameraTimedSwitcher] On a second loop, but looping is disabled; deactivating");
					Activate(false);
					return;
				}
			}

			string Function = _SwitchFunctions[_NextCameraIndex];
			if (Function != "")
			{
				_CameraController.SendCustomEvent(Function);
				Debug.Log("[CameraTimedSwitcher] Executing function " + Function);
			}

			_NextCameraIndex = (_NextCameraIndex + 1) % _SwitchFunctions.Length;

			if (_NextCameraIndex == 0)
			{
				_LoopedOnce = true;
				_NextCameraIndex = _LoopPoint;
				Debug.Log("[CameraTimedSwitcher] Setting next camera index to loop point " + _LoopPoint);
			}

			_Timer = _TimeBetweenCuts[Mathf.Min(CurrentCameraIndex, _TimeBetweenCuts.Length - 1)];
			_AwaitingNextSwitch = true;
			Debug.Log("[CameraTimedSwitcher] Camera index " + _NextCameraIndex + " will be activated in " + _Timer + " seconds");
		}
	}
}