video discovery testing

WeatubeDL/MainWindow.xaml

@@ -5,8 +5,22 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:WeatubeDL"
         mc:Ignorable="d"
-        Title="MainWindow" Height="450" Width="800">
+        Title="Weatube DL" Height="450" Width="800">
     <Grid>
+        <StackPanel x:Name="MainPanel">
+            <DockPanel Height="30" Margin="0, 20, 0,0">
+                <TextBox x:Name="Link" Width="600" TextChanged="Link_TextChanged"></TextBox>
+                <ComboBox Name="VideoType" Width="100">
+                </ComboBox>
+                <Button x:Name="AddLink" Width="100" HorizontalAlignment="Right" IsEnabled="False">
+                    <TextBlock>Add to queue</TextBlock>
+                </Button>
+            </DockPanel>
+            <StackPanel Orientation="Horizontal" x:Name="Queue" Margin="0, 20, 0,0" Width="800" Height="50">
+                <Image Stretch="Fill" Name="QueueImage" Height="50" Width="88" HorizontalAlignment="Left" Margin="0, 0, 10, 0"/>
+                <TextBlock x:Name="QueueItem"></TextBlock>
+            </StackPanel>
             
+        </StackPanel>
     </Grid>
 </Window>

WeatubeDL/MainWindow.xaml.cs

@@ -12,17 +12,51 @@ using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;
+using System.Net;
 
 namespace WeatubeDL
 {
-    /// <summary>
-    /// Interaction logic for MainWindow.xaml
-    /// </summary>
     public partial class MainWindow : Window
     {
+        private YoutubeVideo[] videos;
+        private YoutubeVideo current;
         public MainWindow()
         {
             InitializeComponent();
         }
+
+        private async void Link_TextChanged(object sender, TextChangedEventArgs e)
+        {
+            async Task<bool> UserKeepsTyping()
+            {
+                string txt = (sender as TextBox).Text;
+                await Task.Delay(500);
+                return txt != (sender as TextBox).Text;
+            }
+            if (await UserKeepsTyping()) return;
+            if ((sender as TextBox).Text.Length < 1)
+            {
+                current = null;
+                return;
+            }
+            var text = (sender as TextBox).Text;
+            var vid = new YoutubeVideo(text);
+            if (await vid.Exists())
+            {
+                current = vid;
+                while (current.name == null)
+                {
+                    await Task.Delay(500);
+                }
+                AddLink.IsEnabled = true;
+                QueueItem.Text = current.name;
+                Uri uri = new Uri(current.imagePath, UriKind.RelativeOrAbsolute);
+                QueueImage.Source = BitmapFrame.Create(uri);
+            }
+            else
+            {
+                AddLink.IsEnabled = false;
+            }
+        }
     }
 }

WeatubeDL/Properties/YoutubeVideo.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Net;
+using System.IO;
+using System.ComponentModel;
+using System.Drawing;
+using System.Text.RegularExpressions;
+
+namespace WeatubeDL
+{
+    class YoutubeVideo
+    {
+        public string src { get; private set; }
+        public string id { get; private set; }
+        public string[] types { get; private set; }
+        public string imagePath { get; private set; }
+        public string name {  get; private set; }
+        private WebClient client;
+
+        public YoutubeVideo(string src)
+        {
+            this.src = src;
+            DownloadPreview();
+        }
+
+        ~YoutubeVideo()
+        {
+            if (File.Exists(imagePath)) File.Delete(imagePath);
+            if (client != null) client.Dispose();
+        }
+
+        private void IdFromUrl()
+        {
+            if (src.Contains("youtu.be/") && src.Contains("&"))
+                this.id = src.Replace("/youtu.be/", "").Split('/')[1].Split('&')[0];
+            else if (src.Contains("youtube.com/watch?v=") && src.Contains("&"))
+                this.id = src.Split('=')[1].Split('&')[0];
+        }
+
+        private void DownloadPreview()
+        {
+            this.IdFromUrl();
+            if (id == null) return;
+            client = new WebClient();
+            client.Headers.Add("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0)");
+            client.DownloadFileCompleted += new AsyncCompletedEventHandler(Completed);
+            imagePath = Path.GetTempPath() + this.id + ".png";
+            client.DownloadFileAsync(new Uri("http://img.youtube.com/vi/" + this.id + "/mqdefault.jpg"), imagePath);
+        }
+
+        static void Completed(object sender, AsyncCompletedEventArgs e)
+        {
+            (sender as WebClient).Dispose();
+        }
+        public async Task<bool> Exists()
+        {
+            if (id == null) return false;
+            while(client.IsBusy)
+            {
+                await Task.Delay(100);
+            }
+            if (imagePath.Length > 1 && File.Exists(imagePath))
+            {
+                Bitmap img = new Bitmap(imagePath);
+                if (img.Width == 120)
+                {
+                    img.Dispose();
+                    File.Delete(imagePath);
+                    return false;
+                }
+                img.Dispose();
+                this.GetVideoName();
+                return true;
+            }
+            return false;
+        }
+        private void GetVideoName()
+        {
+            client = new WebClient();
+            client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
+            client.DownloadStringAsync(new Uri(src));
+        }
+
+        void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
+        {
+            this.name = Regex.Match(e.Result, @"\<title\b[^>]*\>\s*(?<Title>[\s\S]*?)\</title\>",
+                RegexOptions.IgnoreCase).Groups["Title"].Value.Replace(" - YouTube", "");
+            (sender as WebClient).Dispose();
+        }
+
+    }
+}

WeatubeDL/WeatubeDL.csproj

@@ -37,6 +37,7 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Data" />
+    <Reference Include="System.Drawing" />
     <Reference Include="System.Xml" />
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Core" />
@@ -72,6 +73,7 @@
     <Compile Include="Properties\AssemblyInfo.cs">
       <SubType>Code</SubType>
     </Compile>
+    <Compile Include="Properties\YoutubeVideo.cs" />
     <Compile Include="Properties\Resources.Designer.cs">
       <AutoGen>True</AutoGen>
       <DesignTime>True</DesignTime>