using System;
using System.IO;
using UnityEditor;
using UnityEngine;

/// <summary>
/// 硬链接目录工具。。。支持win+mac, 需要win 7以上才有mklink命令
/// </summary>
public class LinkHelper
{
	/// <summary>
	/// 删除硬链接目录
	/// </summary>
	/// <param name="linkPath"></param>
	public static void DeleteLink(string linkPath)
	{
		var os = Environment.OSVersion;
		if (os.ToString().Contains("Windows"))
		{
			MyEditorTools.ExecuteCommand(String.Format("rmdir \"{0}\"", linkPath));
		}
		else if (os.ToString().Contains("Unix"))
		{
			MyEditorTools.ExecuteCommand(String.Format("rm -Rf \"{0}\"", linkPath));
		}
		else
		{
			Debug.LogError(String.Format("[SymbolLinkFolder]Error on OS: {0}", os.ToString()));
		}
	}

	public static void SymbolLinkFolder(string srcFolderPath, string targetPath)
	{
		var os = Environment.OSVersion;
		if (os.ToString().Contains("Windows"))
		{
			MyEditorTools.ExecuteCommand(String.Format("mklink /J \"{0}\" \"{1}\"", targetPath, srcFolderPath));
		}
		else if (os.ToString().Contains("Unix"))
		{
			var fullPath = Path.GetFullPath(targetPath);
			if (fullPath.EndsWith("/"))
			{
				fullPath = fullPath.Substring(0, fullPath.Length - 1);
				fullPath = Path.GetDirectoryName(fullPath);
			}
			MyEditorTools.ExecuteCommand(String.Format("ln -s {0} {1}", Path.GetFullPath(srcFolderPath), fullPath));
		}
		else
		{
			Debug.LogError(String.Format("[SymbolLinkFolder]Error on OS: {0}", os.ToString()));
		}
	}

	/// <summary>
	/// 删除指定目录所有硬链接
	/// </summary>
	/// <param name="assetBundlesLinkPath"></param>
	public static void DeleteAllLinks(string assetBundlesLinkPath)
	{
		if (Directory.Exists(assetBundlesLinkPath))
		{
			foreach (var dirPath in Directory.GetDirectories(assetBundlesLinkPath))
			{
				DeleteLink(dirPath);
			}
		}

	}

	[MenuItem("Game/link")]
	public static void MkLinkFramework()
	{
		SymbolLinkFolder("Editor", Application.dataPath + "/123");
		AssetDatabase.Refresh();
	}
	/// <summary>
	/// 创建StreamingAssets链接
	/// </summary>
	public static void MkLinkStreamingAssets()
	{
		string linkPath = Application.streamingAssetsPath + "/";// + Utility.GetPlatformName();
		if (IsLinkStreamingAssets)
		{
			MyEditorTools.CreateDir(Application.streamingAssetsPath);
			var exportPath = "";// AppSetting.ExportResBaseDir + Utility.GetPlatformName();
			MyEditorTools.DeleteDir(linkPath); //删除复制过来的文件夹
			SymbolLinkFolder(exportPath, linkPath);
		}
		else
		{
			DeleteLink(linkPath);
		}
		AssetDatabase.Refresh();
	}
	public static void DeleteLinkStreamingAssets()
	{
		string linkPath = Application.streamingAssetsPath + "/";// + Utility.GetPlatformName();
		if (IsLinkStreamingAssets)
		{
			DeleteLink(linkPath);
			IsLinkStreamingAssets = false;
		}
		else
			MyEditorTools.DeleteDir(linkPath);
	}

	private static bool _IsLinkStreamingAssets = false;
	/// <summary>
	/// 是否连接资源StreamingAssets
	/// </summary>
	public static bool IsLinkStreamingAssets
	{
		get
		{
			_IsLinkStreamingAssets = EditorPrefs.GetBool("IsLinkStreamingAssets", false);
			return _IsLinkStreamingAssets;
		}
		set
		{
			_IsLinkStreamingAssets = value;
			EditorPrefs.SetBool("IsLinkStreamingAssets", value);
		}
	}
}