using UdonSharp;
using UnityEngine;
using VRC.SDK3.Image;
using VRC.SDK3.Video.Components.Base;
using VRC.SDKBase;
using VRC.Udon.Common.Interfaces;


public enum ClueScreenType
{
	Blank,
	Video,
	Map
}


[UdonBehaviourSyncMode(BehaviourSyncMode.Manual)]
public class CaseVideoSyncPlayer : UdonSharpBehaviour
{
	[SerializeField] private GameManagerRound1 _GameManager;

	[UdonSynced, FieldChangeCallback(nameof(SubMapIndex))] private int _SubMapIndex = 0;
	[FieldChangeCallback(nameof(FlashCorrectAnswer))] private bool _FlashCorrectAnswer = false;

	[SerializeField] private BaseVRCVideoPlayer _VideoPlayer;
	[UdonSynced, FieldChangeCallback(nameof(VideoURL))] private VRCUrl _VideoURL;
	[UdonSynced, FieldChangeCallback(nameof(TimeAndOffset))] private Vector2 _TimeAndOffset;
	public float SyncFrequency = 5.0f;

	[SerializeField] private MeshRenderer _BlankScreenMesh;
	[SerializeField] private MeshRenderer _VideoScreenMesh;
	[SerializeField] private MeshRenderer _MapScreenMesh;

	private VRCImageDownloader _MapDownloader;


	void Start()
	{
		_MapDownloader = new VRCImageDownloader();
	}

	void OnDestroy()
	{
		_MapDownloader.Dispose();
	}


	public void LoadMap(int MapIndex)
	{
		ShowScreen(ClueScreenType.Blank);

		TextureInfo AdditionalTextureInfo = new TextureInfo();
		AdditionalTextureInfo.WrapModeU = TextureWrapMode.Clamp;
		AdditionalTextureInfo.WrapModeV = TextureWrapMode.Clamp;
		AdditionalTextureInfo.GenerateMipMaps = false;
		AdditionalTextureInfo.MaterialProperty = "_EmissionMap";
		_MapDownloader.DownloadImage(
			_GameManager.GetMapURL(MapIndex),
			_MapScreenMesh.sharedMaterial,
			(IUdonEventReceiver)this,
			AdditionalTextureInfo);
	}
	public override void OnImageLoadSuccess(IVRCImageDownload result)
	{
		base.OnImageLoadSuccess(result);
	}
	public override void OnImageLoadError(IVRCImageDownload result)
	{
		base.OnImageLoadError(result);
	}

	public void InitialiseMapScreen()
	{
		_VideoPlayer.Stop();
		SubMapIndex = 0;
		ShowScreen(ClueScreenType.Map);
	}

	public void IncrementMap()
	{
		SubMapIndex++;
	}

	public void NextCorrectAnswerFrame()
	{
		if (FlashCorrectAnswer)
		{
			SubMapIndex = (SubMapIndex == 4) ? 3 : 4;
			Debug.LogError("Switching to frame " + SubMapIndex + "...");
			SendCustomEventDelayedSeconds(nameof(NextCorrectAnswerFrame), 0.25f);
		}
	}

	private void UpdateMap()
	{
		switch (SubMapIndex)
		{
			case 0: _MapScreenMesh.sharedMaterial.SetVector("_MainTex_ST", new Vector4(0.5f, 0.33333333f, 0.0f, 0.66666666f)); break;
			case 1: _MapScreenMesh.sharedMaterial.SetVector("_MainTex_ST", new Vector4(0.5f, 0.33333333f, 0.5f, 0.66666666f)); break;
			case 2: _MapScreenMesh.sharedMaterial.SetVector("_MainTex_ST", new Vector4(0.5f, 0.33333333f, 0.0f, 0.33333333f)); break;
			case 3: _MapScreenMesh.sharedMaterial.SetVector("_MainTex_ST", new Vector4(0.5f, 0.33333333f, 0.5f, 0.33333333f)); break;
			case 4: _MapScreenMesh.sharedMaterial.SetVector("_MainTex_ST", new Vector4(0.5f, 0.33333333f, 0.0f, 0.0f)); break;
			case 5: _MapScreenMesh.sharedMaterial.SetVector("_MainTex_ST", new Vector4(0.5f, 0.33333333f, 0.5f, 0.0f)); break;
		}
	}


	public void PlayVideo()
	{
		_VideoPlayer.PlayURL(VideoURL);
		RequestSerialization();
	}

	public override void OnVideoStart()
	{
		Debug.LogError("Displaying video material...");

		ShowScreen(ClueScreenType.Video);
		UpdateTimeAndOffset();

		base.OnVideoStart();
	}

	private void UpdateTimeAndOffset()
	{
		if (Networking.IsOwner(gameObject))
		{
			TimeAndOffset = new Vector2(_VideoPlayer.GetTime(), (float)Networking.GetServerTimeInSeconds());
			RequestSerialization();

			if (SyncFrequency > 0.0f)
			{
				SendCustomEventDelayedSeconds(nameof(UpdateTimeAndOffset), SyncFrequency);
			}
		}
		else
		{
			SendCustomEvent(nameof(Resync));
		}
	}

	public void Resync()
	{
		_VideoPlayer.SetTime(TimeAndOffset.x + ((float)Networking.GetServerTimeInSeconds() - TimeAndOffset.y));
	}


	public void ClearScreen()
	{
		ShowScreen(ClueScreenType.Blank);
		FlashCorrectAnswer = false;
	}


	private void ShowScreen(ClueScreenType Screen)
	{
		switch (Screen)
		{
			case ClueScreenType.Blank:
				{
					_BlankScreenMesh.gameObject.SetActive(true);
					_VideoScreenMesh.gameObject.SetActive(false);
					_MapScreenMesh.gameObject.SetActive(false);
					break;
				}
			case ClueScreenType.Video:
				{
					_BlankScreenMesh.gameObject.SetActive(false);
					_VideoScreenMesh.gameObject.SetActive(true);
					_MapScreenMesh.gameObject.SetActive(false);
					break;
				}
			case ClueScreenType.Map:
				{
					_BlankScreenMesh.gameObject.SetActive(false);
					_VideoScreenMesh.gameObject.SetActive(false);
					_MapScreenMesh.gameObject.SetActive(true);
					break;
				}
		}
	}


	public int SubMapIndex
	{
		set
		{
			_SubMapIndex = value;
			UpdateMap();
		}
		get => _SubMapIndex;
	}

	public bool FlashCorrectAnswer
	{
		set
		{
			_FlashCorrectAnswer = value;
			NextCorrectAnswerFrame();
		}
		get => _FlashCorrectAnswer;
	}

	public VRCUrl VideoURL
	{
		set
		{
			if (_VideoURL != value)
			{
				_VideoURL = value;
				PlayVideo();
			}
		}
		get => _VideoURL;
	}

	public Vector2 TimeAndOffset
	{
		set
		{
			_TimeAndOffset = value;
			if (!Networking.IsOwner(gameObject))
			{
				SendCustomEvent(nameof(Resync));
			}
		}
		get => _TimeAndOffset;
	}
}