Cache ytdl install and an option to download audio

README.md

@@ -1,4 +1,5 @@
 # Ytdl-Gui
-A GUI for Youtube-DL
 [![Appveyor Build status](https://ci.appveyor.com/api/projects/status/772gt5qyb5circ3f?svg=true)](https://ci.appveyor.com/project/cainy-a/ytdl-gui)
 [![Travis Build Status](https://travis-ci.com/cainy-a/Ytdl-Gui.svg?branch=master)](https://travis-ci.com/cainy-a/Ytdl-Gui)
+
+A GUI for [Youtube-DL](https://yt-dl.org)

Ytdl-Gui/Download.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Net;
@@ -7,27 +8,34 @@ namespace Ytdl_Gui
 {
 	public static class Download
 	{
-		public static void DownloadUrls(List<string> urls)
+		public static void DownloadUrls(List<string> urls, bool extractAudio = false, bool forceRedownload = false)
 		{
-			GetDownloader();
-			foreach (var VARIABLE in urls)
+			var ytdlDir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Cain Atkinson\\Ytdl-Gui");
+			var ytdlPath = Path.Combine(ytdlDir, "youtube-dl.exe");
+			if (!File.Exists(ytdlPath) || forceRedownload)
 			{
-				RunYtdl(VARIABLE);
+				Directory.CreateDirectory(ytdlDir);
+				GetDownloader(ytdlPath);
+			}
+
+		foreach (var VARIABLE in urls)
+			{
+				RunYtdl(VARIABLE, ytdlPath, extractAudio);
 			} // Download each URL
 			File.Delete("youtube-dl.exe"); // Delete the Downloader
 		}
-		private static void RunYtdl(string url)
+		private static void RunYtdl(string url, string ytdlPath, bool extractAudio = false)
 		{
-			var dlProcess = Process.Start(
-				Directory.GetCurrentDirectory() + "\\youtube-dl",
-				url); // Start the Process
+			var dlProcess = Process.Start(ytdlPath,
+										  extractAudio ? $"-x {url}" : url); // Start the Process
 			dlProcess.WaitForExit(); // Wait for the Downloader to finish
 		} // Calls YTDL and waits for it
-		private static void GetDownloader()
+		private static void GetDownloader(string pathToDownload)
 		{
 			using (var client = new WebClient())
 			{
-				client.DownloadFile("https://yt-dl.org/downloads/2020.05.08/youtube-dl.exe", "youtube-dl.exe");
+
+				client.DownloadFile("https://yt-dl.org/downloads/latest/youtube-dl.exe", pathToDownload);
 			}
 		} // Downloads Youtube-DL
 	}

Ytdl-Gui/Form1.cs

@@ -97,7 +97,7 @@ private async void buttonDownload_Click(object sender, EventArgs e)
 				tempUrls.AddRange(from object variable in listBoxSelected.Items select variable.ToString());
 
 				// DownloadUrls(tempUrls); // old way, runs it synchronously
-				await Task.Factory.StartNew(() => DownloadUrls(tempUrls)); // New way, should run async.
+				await Task.Factory.StartNew(() => DownloadUrls(tempUrls, checkBoxExtract.Checked, checkBoxRedownload.Checked));
 
 				buttonDownload.Text = "Done!";
 				_busy = false;