youtube playlist downloader

MusicApp/Resources/Portable Class/Downloader.cs

@@ -4,18 +4,22 @@ using Android.OS;
 using Android.Provider;
 using Android.Support.V4.App;
 using System.IO;
+using System.Collections.Generic;
 using System.Linq;
 using YoutubeExplode;
 using YoutubeExplode.Models;
 using YoutubeExplode.Models.MediaStreams;
 using Console = System.Console;
 using File = System.IO.File;
+using MusicApp.Resources.values;
+using System.Threading.Tasks;
 
 namespace MusicApp.Resources.Portable_Class
 {
     [Service]
     public class Downloader : Service
     {
+        private static bool isDownloading = false;
         private NotificationCompat.Builder notification;
         private int notificationID = 1001;
 
@@ -42,6 +46,10 @@ namespace MusicApp.Resources.Portable_Class
 
         private async void DownloadAudio(string videoID, string path, string name)
         {
+            while (isDownloading)
+                await Task.Delay(1000);
+
+            isDownloading = true;
             CreateNotification("Downloading: ", name);
 
             YoutubeClient client = new YoutubeClient();
@@ -58,6 +66,7 @@ namespace MusicApp.Resources.Portable_Class
             FileStream output = File.Create(filePath);
             await input.CopyToAsync(output);
             output.Dispose();
+            isDownloading = false;
 
             SetMetaData(filePath, videoInfo.Title, videoInfo.Author.Name, videoInfo.Thumbnails.HighResUrl);
         }

MusicApp/Resources/Portable Class/YoutubeEngine.cs

@@ -236,6 +236,33 @@ namespace MusicApp.Resources.Portable_Class
             }
         }
 
+        public static async void DownloadFiles(string[] names, string[] videoIDs)
+        {
+            ISharedPreferences prefManager = PreferenceManager.GetDefaultSharedPreferences(Android.App.Application.Context);
+            if (prefManager.GetString("downloadPath", null) != null)
+            {
+                Toast.MakeText(Android.App.Application.Context, "Downloading...", ToastLength.Short).Show();
+                Context context = Android.App.Application.Context;
+                for(int i = 0; i < names.Length; i++)
+                {
+                    Intent intent = new Intent(context, typeof(Downloader));
+                    intent.PutExtra("videoID", videoIDs[i]);
+                    intent.PutExtra("path", prefManager.GetString("downloadPath", null));
+                    intent.PutExtra("name", names[i]);
+                    context.StartService(intent);
+                    await Task.Delay(10000);
+                }
+            }
+            else
+            {
+                Snackbar.Make(MainActivity.instance.FindViewById(Resource.Id.contentView), "Download Path Not Set.", Snackbar.LengthShort).SetAction("Set Path", (v) =>
+                {
+                    Intent intent = new Intent(Android.App.Application.Context, typeof(Preferences));
+                    MainActivity.instance.StartActivity(intent);
+                }).Show();
+            }
+        }
+
         public static void RemoveFromPlaylist(string videoID)
         {
             youtubeService.PlaylistItems.Delete(videoID).Execute();

MusicApp/Resources/Portable Class/YtPlaylists.cs

@@ -11,6 +11,7 @@ using Java.Util;
 using MusicApp.Resources.values;
 using System.Collections.Generic;
 using System.Threading.Tasks;
+using System;
 
 namespace MusicApp.Resources.Portable_Class
 {
@@ -23,7 +24,7 @@ namespace MusicApp.Resources.Portable_Class
 
         private List<Song> playlists = new List<Song>();
         private List<Google.Apis.YouTube.v3.Data.Playlist> YtPlaylists = new List<Google.Apis.YouTube.v3.Data.Playlist>();
-        private string[] actions = new string[] { "Random play", "Rename", "Delete" };
+        private string[] actions = new string[] { "Random play", "Rename", "Delete", "Download" };
         private bool isEmpty = false;
 
 
@@ -158,6 +159,9 @@ namespace MusicApp.Resources.Portable_Class
                     case 2:
                         RemovePlaylist(e.Position, playlists[e.Position].GetPath());
                         break;
+                    case 3:
+                        DownloadPlaylist(playlists[e.Position].GetPath());
+                        break;
                     default:
                         break;
                 }
@@ -180,14 +184,12 @@ namespace MusicApp.Resources.Portable_Class
 
                 foreach (var item in ytPlaylist.Items)
                 {
-                    System.Console.WriteLine(item.Snippet.Title);
                     Song song = new Song(item.Snippet.Title, "", item.Snippet.Thumbnails.Default__.Url, -1, -1, item.ContentDetails.VideoId, true, false);
                     tracks.Add(song);
                 }
 
                 nextPageToken = ytPlaylist.NextPageToken;
             }
-            System.Console.WriteLine("All tracks are retrived");
             YoutubeEngine.PlayFiles(tracks.ToArray());
         }
 
@@ -249,5 +251,30 @@ namespace MusicApp.Resources.Portable_Class
                 Activity.AddContentView(emptyView, View.LayoutParameters);
             }
         }
+
+        private async void DownloadPlaylist(string playlistID)
+        {
+            List<string> names = new List<string>();
+            List<string> videoIDs = new List<string>();
+            string nextPageToken = "";
+            while (nextPageToken != null)
+            {
+                var ytPlaylistRequest = YoutubeEngine.youtubeService.PlaylistItems.List("snippet, contentDetails");
+                ytPlaylistRequest.PlaylistId = playlistID;
+                ytPlaylistRequest.MaxResults = 50;
+                ytPlaylistRequest.PageToken = nextPageToken;
+
+                var ytPlaylist = await ytPlaylistRequest.ExecuteAsync();
+
+                foreach (var item in ytPlaylist.Items)
+                {
+                    names.Add(item.Snippet.Title);
+                    videoIDs.Add(item.ContentDetails.VideoId);
+                }
+
+                nextPageToken = ytPlaylist.NextPageToken;
+            }
+            YoutubeEngine.DownloadFiles(names.ToArray(), videoIDs.ToArray());
+        }
     }
 }