public Framework this[FrameworkVersion version]
 {
     get
     {
         return new Framework(version);
     }
 }

        public static UpdateInfo Create(ReleaseEntry currentVersion, IEnumerable<ReleaseEntry> availableReleases, string packageDirectory, FrameworkVersion appFrameworkVersion)
        {
            Contract.Requires(availableReleases != null);
            Contract.Requires(!String.IsNullOrEmpty(packageDirectory));

            var latestFull = availableReleases.MaxBy(x => x.Version).FirstOrDefault(x => !x.IsDelta);
            if (latestFull == null) {
                throw new Exception("There should always be at least one full release");
            }

            if (currentVersion == null) {
                return new UpdateInfo(currentVersion, new[] { latestFull }, packageDirectory, appFrameworkVersion);
            }

            if (currentVersion.Version == latestFull.Version) {
                return new UpdateInfo(currentVersion, Enumerable.Empty<ReleaseEntry>(), packageDirectory, appFrameworkVersion);
            }

            var newerThanUs = availableReleases.Where(x => x.Version > currentVersion.Version)
                                               .OrderBy(v => v.Version);
            var deltasSize = newerThanUs.Where(x => x.IsDelta).Sum(x => x.Filesize);

            return (deltasSize < latestFull.Filesize && deltasSize > 0)
                ? new UpdateInfo(currentVersion, newerThanUs.Where(x => x.IsDelta).ToArray(), packageDirectory, appFrameworkVersion)
                : new UpdateInfo(currentVersion, new[] { latestFull }, packageDirectory, appFrameworkVersion);
        }

        public UpdateManager(string urlOrPath, 
            string applicationName,
            FrameworkVersion appFrameworkVersion,
            string rootDirectory = null,
            IFileDownloader urlDownloader = null)
        {
            Contract.Requires(!String.IsNullOrEmpty(urlOrPath));
            Contract.Requires(!String.IsNullOrEmpty(applicationName));

            updateUrlOrPath = urlOrPath;
            this.applicationName = applicationName;
            this.appFrameworkVersion = appFrameworkVersion;
            this.urlDownloader = urlDownloader ?? new FileDownloader();

            if (rootDirectory != null) {
                this.rootAppDirectory = Path.Combine(rootDirectory, applicationName);
                return;
            }

            // Determine the rootAppDirectory in such a way so that Portable 
            // Apps are more likely to work
            var entry = Assembly.GetEntryAssembly();
            if (entry != null) {
                rootDirectory = Path.GetFullPath(Path.Combine(Path.GetDirectoryName(entry.Location), "..", ".."));
            }

            this.rootAppDirectory = Path.Combine(rootDirectory ?? getLocalAppDataDirectory(), applicationName);

        }

        public static List<string> GetReferencedAssemblies(FrameworkVersion frameworkVersion)
        {
            switch (frameworkVersion)
            {
                case FrameworkVersion.Version11:
                    break;
                case FrameworkVersion.Version20:
                    break;
                case FrameworkVersion.Version30:
                    break;
                case FrameworkVersion.Version35:
                    break;
                case FrameworkVersion.Version40:
                    break;
            }
            List<string> collection = new List<string>();
            //string[] list = new string[] { "MicroSoft.VisualBasic.dll", "System.dll", "System.Data.dll", "System.xml.dll", "System.Windows.Forms.dll"};
            //collection.AddRange(list);
            //collection.Add(Path.GetFileName(typeof(CodeCompilerFactory).Assembly.Location));
            //collection.Add(Path.GetFileName(System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName));
            foreach (Assembly asm in AppDomain.CurrentDomain.GetAssemblies())
            {
                collection.Add(asm.Location);
            }

            return collection;
        }

        public void DetectFrameworkVersion(string packageName, FrameworkVersion expected)
        {
            var path = IntegrationTestHelper.GetPath("fixtures", packageName);

            var zip = new ZipPackage(path);

            Assert.Equal(expected, zip.DetectFrameworkVersion());
        }

        public string PathToBuildTool(IPackageTree packageTree, FrameworkVersion version)
        {
            var path = Path.Combine(packageTree.Root.CurrentDirectory.FullName, "buildengines");
            path = Path.Combine(path, "Phantom");
            path = Path.Combine(path, "Phantom.exe");

            return new FileInfo(path).FullName;
        }

		public ShimmerConfiguration(string applicationName, string url, string projectName = null, FrameworkVersion frameworkVersion = FrameworkVersion.Net45)
		{
			this.projectName = projectName;
			ApplicationName = applicationName;
			FrameworkVersion = frameworkVersion;

			UrlOrPath = !SystemInspector.Debugger.IsAttached ? CompleteUrl(url) : UrlOrDebugPath(url);
		}

        public string CommandLineArguments(string pathToBuildFile, BuildEngine buildEngine, IPackageTree packageTree, FrameworkVersion version)
        {
            Console.WriteLine(pathToBuildFile);
            Console.WriteLine(buildEngine);
            Console.WriteLine(packageTree);
            Console.WriteLine(version);

            return string.Empty;
        }

        protected UpdateInfo(ReleaseEntry currentlyInstalledVersion, IEnumerable<ReleaseEntry> releasesToApply, string packageDirectory, FrameworkVersion appFrameworkVersion)
        {
            // NB: When bootstrapping, CurrentlyInstalledVersion is null!
            CurrentlyInstalledVersion = currentlyInstalledVersion;
            ReleasesToApply = releasesToApply ?? Enumerable.Empty<ReleaseEntry>();
            FutureReleaseEntry = ReleasesToApply.MaxBy(x => x.Version).FirstOrDefault();
            AppFrameworkVersion = appFrameworkVersion;

            this.packageDirectory = packageDirectory;
        }

        public string GetFrameworkVersionForBuildTool(FrameworkVersion version)
        {
            switch (version)
            {
                case FrameworkVersion.FrameworkVersion2:
                    return "2.0";
                case FrameworkVersion.FrameworkVersion35:
                    return "3.5";
            }

            throw new InvalidEnumArgumentException("Invalid Framework Version", (int)version, typeof(FrameworkVersion));
        }

 public string GetFrameworkVersionForBuildTool(FrameworkVersion version)
 {
     switch (version)
     {
         case FrameworkVersion.FrameworkVersion2:
             return "v2.0";
         case FrameworkVersion.FrameworkVersion35:
             return "v3.5";
         default:
             throw new ArgumentException(string.Format("Unknown framework Version: {0}", version));
     }
 }

 public BuildEngine(IBuildTool buildTool, string buildFile, FrameworkVersion version, IDependencyDispatcher dependencyDispatcher)
 {
     BuildTool = buildTool;
     BuildFile = buildFile;
     Version = version;
     Dependencies = new List<Dependency>();
     Exclusions = new List<string>();
     this.dependencyDispatcher = dependencyDispatcher;
     Modes = new Dictionary<string, IModeSettings>();
     var defaultMode = new ModeSettings( DefaultModeName );
     Modes.Add( DefaultModeName, defaultMode );
     CurrentModeSettings = defaultMode;
 }

 public MethodWriter(GenerationManifest artifacts, FrameworkVersion version, MethodInfoWrapper methodInfo)
     : base(artifacts, version, methodInfo)
 {
     this._methodInfo = methodInfo;
     // true when this is an Async method and the unity version is present
     this._unityVersionOfAsyncExists = NDocUtilities.FindDocumentationUnityAsync(Artifacts.NDocForPlatform("unity"), methodInfo) != null;
     // refer to asynchronous versions if the synchronous version doesn't exist but the async version does
     this._referAsyncAlternativeUnity = (NDocUtilities.FindDocumentationUnityAsyncAlternative(Artifacts.NDocForPlatform("unity"), methodInfo) != null) &&
         (Artifacts.NDocForPlatform("unity") != null) &&
         (NDocUtilities.FindDocumentation(Artifacts.NDocForPlatform("unity"), methodInfo) == null);
     this._referAsyncAlternativePCL = (NDocUtilities.FindDocumentationPCLAsyncAlternative(Artifacts.NDocForPlatform("pcl"), methodInfo) != null) &&
         (Artifacts.NDocForPlatform("pcl") != null) &&
         (NDocUtilities.FindDocumentation(Artifacts.NDocForPlatform("pcl"), methodInfo) == null);
 }

        private GeneratorProjectInfo(string target, string @out, IProjectGenerationError error)
        {
            this.Target = target;
            this.Out = @out;

            this.Language = CSharp.GetLanguage(CSharpVersion.V4);
            this.VisualStudioVersion = VisualStudioVersion.VS2013;
            this.frameworkVersion = FrameworkVersion.v4_5_2;
            this.IsDefaultFrameworkVersion = true;

            this.AddDocumentation = true;
            this.RenameInvalidMembers = true;

            this.Error = error;
        }

        public string CommandLineArguments(string pathToBuildFile, BuildEngine buildEngine, IPackageTree packageTree,
            FrameworkVersion version)
        {
            var cmdLine = new StringBuilder();

            cmdLine.AppendFormat(
                     "{0} /p:OutputPath=\"{1}\"  /p:TargetFrameworkVersion={2} /p:NoWarn=1591 /consoleloggerparameters:Summary",
                     pathToBuildFile.QuotePath(), Path.Combine(packageTree.WorkingDirectory.FullName, buildEngine.BuildRootDirectory),
                     GetFrameworkVersionForBuildTool(version));

            AppendTasks(buildEngine, cmdLine);
            AppendParameters(buildEngine, cmdLine);

            return cmdLine.ToString();
        }

        public UpdateManager(string urlOrPath, 
            string applicationName,
            FrameworkVersion appFrameworkVersion,
            string rootDirectory = null,
            IFileDownloader urlDownloader = null)
        {
            Contract.Requires(!String.IsNullOrEmpty(urlOrPath));
            Contract.Requires(!String.IsNullOrEmpty(applicationName));

            updateUrlOrPath = urlOrPath;
            this.applicationName = applicationName;
            this.appFrameworkVersion = appFrameworkVersion;

            this.rootAppDirectory = Path.Combine(rootDirectory ?? getLocalAppDataDirectory(), applicationName);

            this.urlDownloader = urlDownloader ?? new FileDownloader();
        }

        public static bool NativeImageExists(string fileName, FrameworkVersion version, FrameworkArch arch)
        {
            string assymblyFolder = Path.Combine(Environment.ExpandEnvironmentVariables("%WInDir%"), "assembly");
            string nativeImageFileName = Path.GetFileNameWithoutExtension(fileName) + ".ni" + Path.GetExtension(fileName);
            string nativeImageFolderName = "NativeImages";

            if (FrameworkVersion.NetFX20 == version)
            {
                nativeImageFolderName += "_v2.0.50727";
            }
            else if (FrameworkVersion.NetFX40 == version)
            {
                // version number will keep changing up untill 4.0 RTM
                nativeImageFolderName += "_v4.0.*";
            }

            if (FrameworkArch.x86 == arch)
            {
                nativeImageFolderName += "_32";
            }
            else if (FrameworkArch.x64 == arch)
            {
                nativeImageFolderName += "_64";
            }

            // search for all directories matching the widcard to suppor 4.0
            DirectoryInfo directory = new DirectoryInfo(assymblyFolder);
            DirectoryInfo[] nativeImageDirectoryList = directory.GetDirectories(nativeImageFolderName);

            if (null == nativeImageDirectoryList || nativeImageDirectoryList.Length < 1)
            {
                return false;
            }

            FileInfo[] nativeImageFileList = nativeImageDirectoryList[0].GetFiles(nativeImageFileName, SearchOption.AllDirectories);
            if (null == nativeImageFileList || nativeImageFileList.Length < 1)
            {
                return false;
            }
            else
            {
                return true;
            }
        }

        public UpdateManager(string urlOrPath, 
            string applicationName,
            FrameworkVersion appFrameworkVersion,
            string rootDirectory = null,
            IFileSystemFactory fileSystem = null,
            IUrlDownloader urlDownloader = null)
        {
            Contract.Requires(!String.IsNullOrEmpty(urlOrPath));
            Contract.Requires(!String.IsNullOrEmpty(applicationName));

            log = LogManager.GetLogger<UpdateManager>();

            updateUrlOrPath = urlOrPath;
            this.applicationName = applicationName;
            this.appFrameworkVersion = appFrameworkVersion;

            this.rootAppDirectory = Path.Combine(rootDirectory ?? getLocalAppDataDirectory(), applicationName);
            this.fileSystem = fileSystem ?? AnonFileSystem.Default;

            this.urlDownloader = urlDownloader ?? new DirectUrlDownloader(fileSystem);
        }

        public UpdateManager(string urlOrPath, 
            string applicationName,
            FrameworkVersion appFrameworkVersion,
            string rootDirectory = null,
            IFileSystemFactory fileSystem = null,
            IUrlDownloader urlDownloader = null)
        {
            Contract.Requires(!String.IsNullOrEmpty(urlOrPath));
            Contract.Requires(!String.IsNullOrEmpty(applicationName));

            // XXX: ALWAYS BE LOGGING
            log = new WrappingFullLogger(new FileLogger(applicationName), typeof(UpdateManager));

            updateUrlOrPath = urlOrPath;
            this.applicationName = applicationName;
            this.appFrameworkVersion = appFrameworkVersion;

            this.rootAppDirectory = Path.Combine(rootDirectory ?? getLocalAppDataDirectory(), applicationName);
            this.fileSystem = fileSystem ?? AnonFileSystem.Default;

            this.urlDownloader = urlDownloader ?? new DirectUrlDownloader(fileSystem);
        }

 protected override string GetToolsVersionXml(FrameworkVersion frameworkVersion)
 {
     switch (frameworkVersion)
     {
         case FrameworkVersion.v3_5:
             return "ToolsVersion=\"3.5\"";
         case FrameworkVersion.v3_0:
             return "ToolsVersion=\"3.0\"";
         default:
             return "ToolsVersion=\"2.0\"";
     }
 }