WindowsByondInstaller stuff

src/Tgstation.Server.Host/Components/ByondManager.cs

@@ -8,6 +8,8 @@ using System.Threading;
 using System.Threading.Tasks;
 using Tgstation.Server.Host.IO;
 
+using MemoryStream = System.IO.MemoryStream;
+
 namespace Tgstation.Server.Host.Components
 {
 	/// <inheritdoc />
@@ -83,7 +85,7 @@ namespace Tgstation.Server.Host.Components
 			await ioManager.CreateDirectory(versionKey, cancellationToken).ConfigureAwait(false);
 
 			var resolvedPath = ioManager.ResolvePath(versionKey);
-			using (var zipBytes = await downloadTask.ConfigureAwait(false))
+			using (var zipBytes = new MemoryStream(await downloadTask.ConfigureAwait(false)))
 			using (var archive = new ZipArchive(zipBytes))
 				await Task.Factory.StartNew(() => archive.ExtractToDirectory(resolvedPath), cancellationToken, TaskCreationOptions.LongRunning, TaskScheduler.Current).ConfigureAwait(false);
 

src/Tgstation.Server.Host/Components/IByondInstaller.cs

@@ -2,8 +2,6 @@
 using System.Threading;
 using System.Threading.Tasks;
 
-using Stream = System.IO.Stream;
-
 namespace Tgstation.Server.Host.Components
 {
 	/// <summary>
@@ -26,8 +24,8 @@ namespace Tgstation.Server.Host.Components
 		/// </summary>
 		/// <param name="version">The <see cref="Version"/> of BYOND to download</param>
 		/// <param name="cancellationToken">The <see cref="CancellationToken"/> for the operation</param>
-		/// <returns>A <see cref="Task{TResult}"/> resulting in a <see cref="Stream"/> of the zipfile</returns>
-		Task<Stream> DownloadVersion(Version version, CancellationToken cancellationToken);
+		/// <returns>A <see cref="Task{TResult}"/> resulting in the <see cref="byte"/>s of the zipfile</returns>
+		Task<byte[]> DownloadVersion(Version version, CancellationToken cancellationToken);
 
 		/// <summary>
 		/// Does actions necessary to get an extracted BYOND installation working

src/Tgstation.Server.Host/Components/WindowsByondInstaller.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Tgstation.Server.Host.IO;
+
+namespace Tgstation.Server.Host.Components
+{
+	/// <summary>
+	/// <see cref="IByondInstaller"/> for windows systems
+	/// </summary>
+	sealed class WindowsByondInstaller : IByondInstaller
+	{
+		/// <summary>
+		/// The URL format string for getting BYOND windows version {0}.{1} zipfile
+		/// </summary>
+		const string ByondRevisionsURL = "https://secure.byond.com/download/build/{0}/{0}.{1}_byond.zip";
+
+		/// <inheritdoc />
+		public string DreamDaemonName => "dreamdaemon.exe";
+
+		/// <inheritdoc />
+		public string DreamMakerName => "dm.exe";
+
+		/// <summary>
+		/// The <see cref="IIOManager"/> for the <see cref="WindowsByondInstaller"/>
+		/// </summary>
+		readonly IIOManager ioManager;
+
+		public Task CleanCache(CancellationToken cancellationToken) => ioManager.DeleteDirectory(ioManager.ConcatPath(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "byond/cache"), cancellationToken);
+
+		public Task<byte[]> DownloadVersion(Version version, CancellationToken cancellationToken)
+		{
+			var url = String.Format(CultureInfo.InvariantCulture, ByondRevisionsURL, version.Major, version.Major);
+
+			return ioManager.DownloadFile(new Uri(url), cancellationToken);
+		}
+
+		public Task InstallByond(string path, CancellationToken cancellationToken)
+		{
+			throw new NotImplementedException();
+		}
+	}
+}

src/Tgstation.Server.Host/IO/DefaultIOManager.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Net;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
@@ -243,5 +244,13 @@ namespace Tgstation.Server.Host.IO
 			link = ResolvePath(link);
 
 		}, cancellationToken, TaskCreationOptions.LongRunning, TaskScheduler.Current);
+
+		/// <inheritdoc />
+		public async Task<byte[]> DownloadFile(Uri url, CancellationToken cancellationToken)
+		{
+			using (var wc = new WebClient())
+			using (cancellationToken.Register(() => wc.CancelAsync()))
+				return await wc.DownloadDataTaskAsync(url).ConfigureAwait(false);
+		}
 	}
 }

src/Tgstation.Server.Host/IO/IIOManager.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -153,5 +154,13 @@ namespace Tgstation.Server.Host.IO
 		/// <param name="cancellationToken">A <see cref="CancellationToken"/> for the operation</param>
 		/// <returns>A <see cref="Task"/> representing the running operation</returns>
 		Task MoveFile(string source, string destination, CancellationToken cancellationToken);
+
+		/// <summary>
+		/// Downloads a file from <paramref name="url"/>
+		/// </summary>
+		/// <param name="url">The URL to download</param>
+		/// <param name="cancellationToken">A <see cref="CancellationToken"/> for the operation</param>
+		/// <returns>A <see cref="Task{TResult}"/> resulting in the <see cref="byte"/>s of the downloaded file</returns>
+		Task<byte[]> DownloadFile(Uri url, CancellationToken cancellationToken);
 	}
 }