using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Runtime.CompilerServices;
using BepInEx;
using BepInEx.Logging;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

[assembly: CompilationRelaxations(8)]
[assembly: RuntimeCompatibility(WrapNonExceptionThrows = true)]
[assembly: AssemblyVersion("0.0.0.0")]
namespace RTLC.GWYF.TextureRuntime;

[BepInPlugin("rtlc.gwyf.texture", "RTLC.GWYF Texture Runtime", "0.3.0")]
public sealed class Plugin : BaseUnityPlugin
{
	private sealed class Replacement
	{
		public string Name;

		public string Path;

		public Texture2D Texture;

		public readonly HashSet<int> PatchedTextures = new HashSet<int>();

		public readonly Dictionary<int, Sprite> SpriteCache = new Dictionary<int, Sprite>();
	}

	private readonly Dictionary<string, Replacement> _replacements = new Dictionary<string, Replacement>(StringComparer.OrdinalIgnoreCase);

	private ManualLogSource _log;

	private bool _loaded;

	private void Awake()
	{
		_log = ((BaseUnityPlugin)this).Logger;
		((BaseUnityPlugin)this).Logger.LogInfo((object)"RTLC.GWYF texture module loaded. © RTLC Team. Все права защищены.");
		SceneManager.sceneLoaded += OnSceneLoaded;
		((MonoBehaviour)this).StartCoroutine(LoadReplacementsAndApply());
	}

	private void OnDestroy()
	{
		SceneManager.sceneLoaded -= OnSceneLoaded;
	}

	private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
	{
		if (_loaded)
		{
			((MonoBehaviour)this).StartCoroutine(ApplyDelayed("scene " + ((Scene)(ref scene)).name));
		}
	}

	private IEnumerator LoadReplacementsAndApply()
	{
		string pluginDirectory = Path.GetDirectoryName(((BaseUnityPlugin)this).Info.Location);
		string textureDirectory = Path.Combine(pluginDirectory ?? string.Empty, "Textures");
		if (!Directory.Exists(textureDirectory))
		{
			_log.LogWarning((object)("Texture directory does not exist: " + textureDirectory));
			yield break;
		}
		string[] files = Directory.GetFiles(textureDirectory, "*.png", SearchOption.TopDirectoryOnly);
		for (int i = 0; i < files.Length; i++)
		{
			yield return LoadReplacement(files[i]);
		}
		_loaded = true;
		if (_replacements.Count == 0)
		{
			_log.LogWarning((object)"No replacement PNG files found.");
			yield break;
		}
		_log.LogInfo((object)("Texture replacement hooks installed. Replacement count: " + _replacements.Count));
		yield return ApplyDelayed("startup");
	}

	private IEnumerator LoadReplacement(string path)
	{
		string uri = new Uri(Path.GetFullPath(path)).AbsoluteUri;
		UnityWebRequest request = UnityWebRequestTexture.GetTexture(uri, false);
		yield return request.SendWebRequest();
		if ((int)request.result != 1)
		{
			_log.LogWarning((object)("Failed to load replacement PNG: " + path + " - " + request.error));
			request.Dispose();
			yield break;
		}
		Texture2D texture = DownloadHandlerTexture.GetContent(request);
		request.Dispose();
		if ((Object)(object)texture == (Object)null)
		{
			_log.LogWarning((object)("Loaded replacement PNG returned null texture: " + path));
			yield break;
		}
		string name = Path.GetFileNameWithoutExtension(path);
		((Object)texture).name = name + "_RU";
		((Texture)texture).wrapMode = (TextureWrapMode)1;
		((Texture)texture).filterMode = (FilterMode)1;
		_replacements[name] = new Replacement
		{
			Name = name,
			Path = path,
			Texture = texture
		};
		_log.LogInfo((object)("Loaded replacement texture: " + name + " (" + ((Texture)texture).width + "x" + ((Texture)texture).height + ") from " + path));
	}

	private IEnumerator ApplyDelayed(string reason)
	{
		ApplyReplacements(reason + " immediate");
		yield return (object)new WaitForSecondsRealtime(0.25f);
		ApplyReplacements(reason + " +0.25s");
		yield return (object)new WaitForSecondsRealtime(1f);
		ApplyReplacements(reason + " +1.25s");
	}

	private void ApplyReplacements(string reason)
	{
		int num = PatchLoadedTextures();
		int num2 = PatchImages();
		int num3 = PatchSpriteRenderers();
		int num4 = PatchMaterials();
		if (num > 0 || num2 > 0 || num3 > 0 || num4 > 0)
		{
			_log.LogInfo((object)("Applied texture replacements (" + reason + "): textures=" + num + ", images=" + num2 + ", spriteRenderers=" + num3 + ", materials=" + num4));
		}
	}

	private int PatchLoadedTextures()
	{
		int num = 0;
		Texture2D[] array = Resources.FindObjectsOfTypeAll<Texture2D>();
		foreach (Texture2D val in array)
		{
			if ((Object)(object)val == (Object)null || !_replacements.TryGetValue(((Object)val).name, out var value))
			{
				continue;
			}
			int instanceID = ((Object)val).GetInstanceID();
			if (!value.PatchedTextures.Contains(instanceID) && !object.ReferenceEquals(val, value.Texture) && ((Texture)val).width == ((Texture)value.Texture).width && ((Texture)val).height == ((Texture)value.Texture).height)
			{
				try
				{
					Graphics.CopyTexture((Texture)(object)value.Texture, (Texture)(object)val);
					value.PatchedTextures.Add(instanceID);
					num++;
				}
				catch (Exception ex)
				{
					value.PatchedTextures.Add(instanceID);
					_log.LogWarning((object)("Could not copy replacement into Texture2D " + ((Object)val).name + "; will rely on sprite/material patching. " + ex.Message));
				}
			}
		}
		return num;
	}

	private int PatchImages()
	{
		int num = 0;
		Image[] array = Resources.FindObjectsOfTypeAll<Image>();
		foreach (Image val in array)
		{
			if ((Object)(object)val == (Object)null || (Object)(object)val.sprite == (Object)null)
			{
				continue;
			}
			Replacement replacement = FindReplacementForSprite(val.sprite);
			if (replacement != null)
			{
				Sprite replacementSprite = GetReplacementSprite(replacement, val.sprite);
				if (!((Object)(object)replacementSprite == (Object)null) && !object.ReferenceEquals(val.sprite, replacementSprite))
				{
					val.sprite = replacementSprite;
					((Graphic)val).SetAllDirty();
					num++;
				}
			}
		}
		return num;
	}

	private int PatchSpriteRenderers()
	{
		int num = 0;
		SpriteRenderer[] array = Resources.FindObjectsOfTypeAll<SpriteRenderer>();
		foreach (SpriteRenderer val in array)
		{
			if ((Object)(object)val == (Object)null || (Object)(object)val.sprite == (Object)null)
			{
				continue;
			}
			Replacement replacement = FindReplacementForSprite(val.sprite);
			if (replacement != null)
			{
				Sprite replacementSprite = GetReplacementSprite(replacement, val.sprite);
				if (!((Object)(object)replacementSprite == (Object)null) && !object.ReferenceEquals(val.sprite, replacementSprite))
				{
					val.sprite = replacementSprite;
					num++;
				}
			}
		}
		return num;
	}

	private int PatchMaterials()
	{
		int num = 0;
		Renderer[] array = Resources.FindObjectsOfTypeAll<Renderer>();
		foreach (Renderer val in array)
		{
			if ((Object)(object)val == (Object)null)
			{
				continue;
			}
			Material[] sharedMaterials = val.sharedMaterials;
			if (sharedMaterials == null)
			{
				continue;
			}
			foreach (Material val2 in sharedMaterials)
			{
				if (!((Object)(object)val2 == (Object)null) && !((Object)(object)val2.mainTexture == (Object)null) && _replacements.TryGetValue(((Object)val2.mainTexture).name, out var value))
				{
					val2.mainTexture = (Texture)(object)value.Texture;
					num++;
				}
			}
		}
		return num;
	}

	private Replacement FindReplacementForSprite(Sprite sprite)
	{
		if (_replacements.TryGetValue(((Object)sprite).name, out var value))
		{
			return value;
		}
		Texture2D texture = sprite.texture;
		if ((Object)(object)texture != (Object)null && _replacements.TryGetValue(((Object)texture).name, out value))
		{
			return value;
		}
		return null;
	}

	private Sprite GetReplacementSprite(Replacement replacement, Sprite source)
	{
		//IL_001a: Unknown result type (might be due to invalid IL or missing references)
		//IL_001f: Unknown result type (might be due to invalid IL or missing references)
		//IL_0085: Unknown result type (might be due to invalid IL or missing references)
		//IL_008a: Unknown result type (might be due to invalid IL or missing references)
		//IL_00f3: Unknown result type (might be due to invalid IL or missing references)
		//IL_00f4: Unknown result type (might be due to invalid IL or missing references)
		//IL_00fe: Unknown result type (might be due to invalid IL or missing references)
		//IL_009b: Unknown result type (might be due to invalid IL or missing references)
		//IL_00a0: Unknown result type (might be due to invalid IL or missing references)
		//IL_00b3: Unknown result type (might be due to invalid IL or missing references)
		//IL_00be: Unknown result type (might be due to invalid IL or missing references)
		//IL_00c3: Unknown result type (might be due to invalid IL or missing references)
		//IL_00ce: Unknown result type (might be due to invalid IL or missing references)
		//IL_00d9: Unknown result type (might be due to invalid IL or missing references)
		//IL_00de: Unknown result type (might be due to invalid IL or missing references)
		int instanceID = ((Object)source).GetInstanceID();
		if (replacement.SpriteCache.TryGetValue(instanceID, out var value))
		{
			return value;
		}
		Rect rect = source.rect;
		if (((Rect)(ref rect)).xMax > (float)((Texture)replacement.Texture).width || ((Rect)(ref rect)).yMax > (float)((Texture)replacement.Texture).height)
		{
			((Rect)(ref rect))..ctor(0f, 0f, (float)((Texture)replacement.Texture).width, (float)((Texture)replacement.Texture).height);
		}
		Vector2 val = default(Vector2);
		((Vector2)(ref val))..ctor(0.5f, 0.5f);
		Rect rect2 = source.rect;
		if (((Rect)(ref rect2)).width > 0f)
		{
			Rect rect3 = source.rect;
			if (((Rect)(ref rect3)).height > 0f)
			{
				float x = source.pivot.x;
				Rect rect4 = source.rect;
				float num = x / ((Rect)(ref rect4)).width;
				float y = source.pivot.y;
				Rect rect5 = source.rect;
				((Vector2)(ref val))..ctor(num, y / ((Rect)(ref rect5)).height);
			}
		}
		Sprite val2 = Sprite.Create(replacement.Texture, rect, val, source.pixelsPerUnit, 0u, (SpriteMeshType)0, source.border);
		((Object)val2).name = replacement.Name;
		replacement.SpriteCache[instanceID] = val2;
		return val2;
	}
}