using System;
using System.Collections.Generic;
using System.IO;
using UnityEngine;

namespace kt.Utility
{
	public static class UnityUtility
	{
		public static GameObject GetChildObject(Transform transform, string hierarchyPath)
		{
			if (transform == null)
			{
				return GameObject.Find(hierarchyPath);
			}
			return (!transform.Find(hierarchyPath)) ? null : transform.Find(hierarchyPath).gameObject;
		}

		public static GameObject GetChildObject(GameObject obj, string hierarchyPath)
		{
			return UnityUtility.GetChildObject((!obj) ? null : obj.transform, hierarchyPath);
		}

		public static GameObject GetChildObject(string hierarchyPath)
		{
			return UnityUtility.GetChildObject(null, hierarchyPath);
		}

		public static T GetChildObject<T>(Transform transform, string hierarchyPath) where T : Component
		{
			GameObject childObject = UnityUtility.GetChildObject(transform, hierarchyPath);
			return (!childObject) ? ((T)((object)null)) : childObject.GetComponent<T>();
		}

		public static T GetChildObject<T>(GameObject obj, string hierarchyPath) where T : Component
		{
			return UnityUtility.GetChildObject<T>((!obj) ? null : obj.transform, hierarchyPath);
		}

		public static List<Transform> GetAllChildren(Transform transform, bool include_self = false)
		{
			List<Transform> list = new List<Transform>();
			if (include_self)
			{
				list.Add(transform);
			}
			for (int i = 0; i < transform.childCount; i++)
			{
				Transform child = transform.GetChild(i);
				list.Add(child);
				list.AddRange(UnityUtility.GetAllChildren(child, false));
			}
			return list;
		}

		public static Transform SearchChild(this Transform transform, Predicate<Transform> match)
		{
			if (match(transform))
			{
				return transform;
			}
			for (int i = 0; i < transform.childCount; i++)
			{
				Transform transform2 = transform.GetChild(i).SearchChild(match);
				if (transform2)
				{
					return transform2;
				}
			}
			return null;
		}

		public static Transform SearchChildByName(this Transform transform, string search_name)
		{
			return transform.SearchChild((Transform ch) => ch.name == search_name);
		}

		public static string GetObjectTreePath(GameObject obj)
		{
			string text = string.Empty;
			if (obj == null)
			{
				return text;
			}
			text += obj.name;
			while (obj.transform.parent != null)
			{
				obj = obj.transform.parent.gameObject;
				text = obj.name + "/" + text;
			}
			return text;
		}

		public static string GetHierarchyPath(Transform trans, Transform root_obj = null, bool include_rootobj_path = true)
		{
			if (trans == root_obj)
			{
				return string.Empty;
			}
			string text = trans.gameObject.name;
			Transform parent = trans.parent;
			while (parent != root_obj && parent != null)
			{
				text = parent.name + "/" + text;
				parent = parent.parent;
			}
			if (include_rootobj_path)
			{
				text = root_obj.name + "/" + text;
			}
			return text;
		}

		public static bool IsChild(Transform parent, Transform child)
		{
			Func<Transform, Transform, Transform> Search = null;
			Search = delegate(Transform checkParent, Transform target)
			{
				if (checkParent == target)
				{
					return target;
				}
				for (int i = 0; i < checkParent.childCount; i++)
				{
					Transform transform = Search(checkParent.GetChild(i), checkParent);
					if (transform != null)
					{
						return transform;
					}
				}
				return null;
			};
			return Search(parent, child) == child;
		}

		public static string SaveImage(Texture f_texSrc, string f_strFileName = null)
		{
			if (f_texSrc is Texture2D)
			{
				return UnityUtility.SaveImage(f_texSrc as Texture2D, f_strFileName);
			}
			if (f_texSrc is RenderTexture)
			{
				return UnityUtility.SaveImage(f_texSrc as RenderTexture, f_strFileName, TextureFormat.ARGB32);
			}
			return string.Empty;
		}

		public static string SaveImage(RenderTexture f_rtSrc, string f_strFileName = null, TextureFormat f_TexFormat = TextureFormat.ARGB32)
		{
			if (f_rtSrc == null)
			{
				return string.Empty;
			}
			string text = f_strFileName;
			if (string.IsNullOrEmpty(text))
			{
				text = "img" + DateTime.Now.ToString("yyyyMMddHHmmss.fff") + ".png";
			}
			Texture2D texture2D = new Texture2D(f_rtSrc.width, f_rtSrc.height, f_TexFormat, false);
			RenderTexture active = RenderTexture.active;
			RenderTexture.active = f_rtSrc;
			texture2D.ReadPixels(new Rect(0f, 0f, (float)f_rtSrc.width, (float)f_rtSrc.height), 0, 0);
			RenderTexture.active = active;
			byte[] bytes = texture2D.EncodeToPNG();
			File.WriteAllBytes(text, bytes);
			UnityEngine.Object.Destroy(texture2D);
			return text;
		}

		public static string SaveImage(Texture2D f_texSrc, string f_strFileName = null)
		{
			if (f_texSrc == null)
			{
				return string.Empty;
			}
			RenderTexture renderTexture = new RenderTexture(f_texSrc.width, f_texSrc.height, 0, RenderTextureFormat.ARGB32);
			RenderTexture active = RenderTexture.active;
			Graphics.Blit(f_texSrc, renderTexture);
			RenderTexture.active = active;
			string result = UnityUtility.SaveImage(renderTexture, f_strFileName, TextureFormat.ARGB32);
			UnityEngine.Object.Destroy(renderTexture);
			return result;
		}

		public static Sprite CreateSpriteFromImageFile(string pngFilePath)
		{
			if (string.IsNullOrEmpty(pngFilePath))
			{
				return null;
			}
			if (!File.Exists(pngFilePath))
			{
				return null;
			}
			Texture2D texture2D = null;
			try
			{
				byte[] array = File.ReadAllBytes(pngFilePath);
				if (array == null || array.Length == 0)
				{
					return null;
				}
				texture2D = new Texture2D(32, 32);
				texture2D.LoadImage(array);
			}
			catch (Exception ex)
			{
				Debug.LogError(ex.Message + "\n\n" + ex.StackTrace);
				return null;
			}
			if (texture2D == null || texture2D.width == 0 || texture2D.height == 0)
			{
				return null;
			}
			Sprite sprite = Sprite.Create(texture2D, new Rect(0f, 0f, (float)texture2D.width, (float)texture2D.height), default(Vector2));
			sprite.name = Path.GetFileName(pngFilePath);
			return sprite;
		}

		public static Texture2D CreateTexture2DFromRenderTexture(RenderTexture render_tex)
		{
			Texture2D texture2D = new Texture2D(render_tex.width, render_tex.height, TextureFormat.ARGB32, false);
			RenderTexture active = RenderTexture.active;
			RenderTexture.active = render_tex;
			texture2D.ReadPixels(new Rect(0f, 0f, (float)render_tex.width, (float)render_tex.height), 0, 0);
			texture2D.Apply();
			RenderTexture.active = active;
			return texture2D;
		}

		public static Color SetColorR(Color target, float r)
		{
			Color result = target;
			result.r = r;
			return result;
		}

		public static Color SetColorG(Color target, float g)
		{
			Color result = target;
			result.g = g;
			return result;
		}

		public static Color SetColorB(Color target, float b)
		{
			Color result = target;
			result.b = b;
			return result;
		}

		public static Color SetAlpha(Color target, float alpha)
		{
			Color result = target;
			result.a = alpha;
			return result;
		}

		public static Quaternion InverseTransformRotation(this Transform transform, Quaternion rot)
		{
			return Quaternion.Inverse(transform.rotation) * rot;
		}

		public static void RemoveAllComponents<T>(this GameObject gameObject) where T : MonoBehaviour
		{
			T[] components = gameObject.GetComponents<T>();
			if (components != null)
			{
				foreach (T t in components)
				{
					UnityEngine.Object.DestroyImmediate(t);
				}
			}
		}

		public class PosRotScale
		{
			public PosRotScale()
			{
			}

			public PosRotScale(UnityUtility.PosRotScale prs)
			{
				this.position = prs.position;
				this.scale = prs.scale;
				this.rotation = prs.rotation;
			}

			public Vector3 position;

			public Vector3 scale;

			public Quaternion rotation;
		}
	}
}