Initial commit of auto-adding torrent system

AnimeAnnouncer.Web/Pages/Index.cshtml

@@ -35,7 +35,7 @@
         <div class="airing-list">
             @foreach (var show in Model.AiringShows)
             {
-                <article class="airing-row @(show.IsFuture ? "is-upcoming" : "is-aired")">
+                <article id="show-@show.ShowID" class="airing-row @(show.IsFuture ? "is-upcoming" : "is-aired")">
                     @if (!string.IsNullOrWhiteSpace(show.HeroImageUrl))
                     {
                         <div class="airing-backdrop" style="background-image: url('@show.HeroImageUrl');" aria-hidden="true"></div>
@@ -169,6 +169,17 @@
                                 {
                                     <a href="@show.AnilistUrl" target="_blank" rel="noopener noreferrer" class="btn btn-sm btn-outline-info">AniList</a>
                                 }
+                                @if (show.Download)
+                                {
+                                    <span class="btn btn-sm btn-success disabled" aria-disabled="true">✓ Marked for download</span>
+                                }
+                                else
+                                {
+                                    <form method="post" asp-page-handler="Download" class="d-inline">
+                                        <input type="hidden" name="showId" value="@show.ShowID" />
+                                        <button type="submit" class="btn btn-sm btn-outline-success">⬇ Download</button>
+                                    </form>
+                                }
 
                                 @if (show.SecondaryImages.Count > 0)
                                 {

AnimeAnnouncer.Web/Pages/Index.cshtml.cs

@@ -1,6 +1,7 @@
 using System.Net;
 using System.Text.RegularExpressions;
 using AnimeAnnouncer.Cache;
+using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
 
 namespace AnimeAnnouncer.Web.Pages;
@@ -95,6 +96,25 @@ public class IndexModel : PageModel
         }
     }
 
+    public async Task<IActionResult> OnPostDownloadAsync(int showId)
+    {
+        if (_tmdbCache == null)
+            return StatusCode(StatusCodes.Status503ServiceUnavailable);
+
+        try
+        {
+            if (!await _tmdbCache.SetDownload(showId, true))
+                _logger.LogWarning("Download requested for show {ShowID}, which is not in the airing list", showId);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Failed to flag show {ShowID} for download", showId);
+        }
+
+        // Post/redirect/get, landing back on the row that was clicked.
+        return RedirectToPage(null, null, null, $"show-{showId}");
+    }
+
     public class ShowImage
     {
         public required string Url { get; set; }
@@ -112,6 +132,7 @@ public class IndexModel : PageModel
 
         public string Title => AiringSoon.Title;
         public int ShowID => AiringSoon.ShowID;
+        public bool Download => AiringSoon.Download;
         public DateTime? EffectiveLastAirDate => AiringSoon.LastAirDate ?? CachedDetails?.LastAirDate;
         public int LatestEpisodeNumber => AiringSoon.LatestEpisodeNumber > 0 
             ? AiringSoon.LatestEpisodeNumber 

AnimeAnnouncer.sln

@@ -9,6 +9,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MassTorrentAdd", "MassTorre
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AnimeAnnouncer.Web", "AnimeAnnouncer.Web\AnimeAnnouncer.Web.csproj", "{DD4F134D-B455-4A8C-8DDE-AA0ED735DA42}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AnimeAnnouncer.Torrents", "AnimeAnnouncer.Torrents\AnimeAnnouncer.Torrents.csproj", "{901424DF-F8CD-449B-9517-73CA42D61B54}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -55,6 +57,18 @@ Global
 		{DD4F134D-B455-4A8C-8DDE-AA0ED735DA42}.Release|x64.Build.0 = Release|Any CPU
 		{DD4F134D-B455-4A8C-8DDE-AA0ED735DA42}.Release|x86.ActiveCfg = Release|Any CPU
 		{DD4F134D-B455-4A8C-8DDE-AA0ED735DA42}.Release|x86.Build.0 = Release|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Debug|x64.Build.0 = Debug|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Debug|x86.Build.0 = Debug|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Release|Any CPU.Build.0 = Release|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Release|x64.ActiveCfg = Release|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Release|x64.Build.0 = Release|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Release|x86.ActiveCfg = Release|Any CPU
+		{901424DF-F8CD-449B-9517-73CA42D61B54}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

AnimeAnnouncer/AnimeAnnouncer.csproj

@@ -27,4 +27,7 @@
     <HintPath>..\Libraries\TMDbLib.dll</HintPath>
   </Reference>
 </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\AnimeAnnouncer.Torrents\AnimeAnnouncer.Torrents.csproj" />
+  </ItemGroup>
 </Project>

AnimeAnnouncer/Cache/AiringSoonItem.cs

@@ -7,5 +7,6 @@ namespace AnimeAnnouncer.Cache
         public int ShowID { get; set; }
         public DateTime? LastAirDate { get; set; }
         public int LatestEpisodeNumber { get; set; }
+        public bool Download { get; set; }
     }
 }

AnimeAnnouncer/Cache/TMDBCache.cs

@@ -60,6 +60,19 @@ public class TMDBCache
         else
             return null;
     }
+    /// <summary>Sets the Download flag on one airing list entry. Returns false when the show is not in the list.</summary>
+    public async Task<bool> SetDownload(int showID, bool download)
+    {
+        var list = await GetAiringList();
+        var item = list?.FirstOrDefault(s => s.ShowID == showID);
+        if (item == null)
+            return false;
+
+        item.Download = download;
+        await SetAiringSoon(list!);
+        return true;
+    }
+
     public async Task<bool> KeyExists(String key)
     {
         var db = redis.GetDatabase();

AnimeAnnouncer/Program.cs

@@ -4,6 +4,7 @@ using System.Security.Cryptography;
 using System.Security.Cryptography.X509Certificates;
 using AnimeAnnouncer.Cache;
 using AnimeAnnouncer.RSS;
+using AnimeAnnouncer.Torrents;
 using Mastonet;
 using Mastonet.Entities;
 using Microsoft.Extensions.Configuration;
@@ -24,6 +25,9 @@ namespace AnimeAnnouncer
         private static Anilist? anilistClient;
 
         private static List<AiringSoonItem> airingSoonList;
+        
+        private static TransmissionService  transmissionService;
+        private static String destinationFolder;
         static void Main(string[] args)
         {
             Console.WriteLine("Starting...");
@@ -64,6 +68,19 @@ namespace AnimeAnnouncer
 
             if (!String.IsNullOrEmpty(anilistToken))
                 anilistClient = new Anilist(anilistToken);
+            
+            String? transmissionHost = config["transmissionURI"];
+            String? transmissionUsername = config["transmissionUsername"];
+            String? transmissionPassword = config["transmissionPassword"];
+            destinationFolder = config["destinationFolder"];
+
+            if (transmissionHost != null && transmissionUsername != null && transmissionPassword != null &&
+                destinationFolder != null)
+            {
+                Console.WriteLine("Connecting to transmission");
+                transmissionService = TransmissionService.ConnectAsync(transmissionHost, transmissionUsername, transmissionPassword).Result;
+                
+            }
 
             airingSoonList = tmdbCache.GetAiringList().Result;
 
@@ -401,6 +418,13 @@ namespace AnimeAnnouncer
                 {
                     _ = tmdbCache.SetPair($"ShowAnnounced-{supposedShowId}", latestSeasonNumber.ToString());
                     _ = PostStatus(cachedShow);
+                    var existingAiringItem = airingSoonList.FirstOrDefault(s => s.ShowID == cachedShow.ShowID);
+                    if (existingAiringItem != null && existingAiringItem.Download)
+                    {
+                        Console.WriteLine($"Attempting to queue {existingAiringItem.Title} in the torrent client");
+                        _ = AddToTorrentClient(cachedShow);
+                    }
+                    
                 }
                 catch(Exception ex)
                 {
@@ -411,6 +435,28 @@ namespace AnimeAnnouncer
             Console.WriteLine($"Choosing {title} as a finished season!");
         }
 
+        private static async Task AddToTorrentClient(TMDBCacheItem cacheItem)
+        {
+            var reader = new NyaaRssReader();
+            var titleParts = TorrentDirectoryNamer.PrepareForURI(cacheItem.Title);
+            var seasonNumber = $"S{cacheItem.LatestSeasonNumber:D2}";
+            var url = $"https://nyaa.si/?f=0&c=0_0&q={titleParts}+{seasonNumber}+CR+VARYG+DUAL";
+            var items = await reader.ReadAsync(url);
+            if (items.Count != cacheItem.LastEpisodeNumber)
+            {
+                Console.WriteLine($"{cacheItem.Title} had {items.Count} results but only {cacheItem.LastEpisodeNumber} episodes. Aborting.");
+                return;
+            }
+
+            var folderName = TorrentDirectoryNamer.FromTitle(items.First().Title, destinationFolder);
+
+            foreach (var item in items)
+            {
+                var torrentData = await reader.DownloadTorrentAsync(item);
+                await transmissionService.AddNewTorrentFileToServerAsync(torrentData, folderName);
+            }
+        }
+
 
         private static async Task CreateAiringMonthPost()
         {
@@ -530,9 +576,22 @@ namespace AnimeAnnouncer
                     Console.WriteLine($"Not updating {cachedShow.Title} airdate due to episode number not incrementing");
                     return;
                 }
+                airingSoonItem.Download = existingAiringItem.Download;
                 airingSoonList.RemoveAll(s => s.ShowID == cachedShow.ShowID);
                 airingSoonList.Add(airingSoonItem);
             }
+            // The web page can flag shows for download directly in the cache, so carry those
+            // flags over rather than overwriting them with this process's in-memory copy.
+            var cachedList = await tmdbCache.GetAiringList();
+            if (cachedList != null)
+            {
+                foreach (var cached in cachedList.Where(c => c.Download))
+                {
+                    var local = airingSoonList.FirstOrDefault(s => s.ShowID == cached.ShowID);
+                    if (local != null)
+                        local.Download = true;
+                }
+            }
             airingSoonList.Sort((showOne, showTwo) => showOne.LastAirDate.Value.CompareTo(showTwo.LastAirDate.Value));
             _ = tmdbCache.SetAiringSoon(airingSoonList);
             Console.WriteLine($"Updated airing soon list, setting {cachedShow.Title} Season {cachedShow.LatestSeasonNumber} to end on {cachedShow.LastAirDate ?? DateTime.MaxValue}");

MassTorrentAdd/MassTorrentAdd.csproj

@@ -16,7 +16,6 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="8.0.0" />
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.21.0" />
-    <PackageReference Include="Transmission.API.RPC" Version="2.1.2" />
   </ItemGroup>
 
   <ItemGroup>
@@ -25,4 +24,8 @@
     </None>
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\AnimeAnnouncer.Torrents\AnimeAnnouncer.Torrents.csproj" />
+  </ItemGroup>
+
 </Project>

MassTorrentAdd/Program.cs

@@ -1,15 +1,11 @@
-using Microsoft.Extensions.Configuration;
+using AnimeAnnouncer.Torrents;
-using System.Xml.Linq;
+using Microsoft.Extensions.Configuration;
-using Transmission.API.RPC;
 
 namespace MassTorrentAdd
 {
     internal class Program
     {
-        static String watchFolder, transmissionHost, transmissionUsername, transmissionPassword, transmissionDownloadFolder, destinationFolder;
+        static async Task Main(string[] args)
-        static Transmission.API.RPC.Client transmissionClient;
-
-        static void Main(string[] args)
         {
             if(args.Length == 0)
             {
@@ -17,60 +13,53 @@ namespace MassTorrentAdd
                 return;
             }
             String url = args[0];
-            if (!url.Contains("rss"))
-                url = url + "&page=rss";
 
             var builder = new ConfigurationBuilder()
         .SetBasePath(Directory.GetCurrentDirectory())
         .AddJsonFile("appSettings.json", optional: false, reloadOnChange: true);
 
             IConfigurationRoot configuration = builder.Build();
-            transmissionHost = configuration.GetValue<String>("transmissionURI");
+            String transmissionHost = configuration.GetValue<String>("transmissionURI")!;
-            transmissionUsername = configuration.GetValue<String>("transmissionUsername");
+            String? transmissionUsername = configuration.GetValue<String>("transmissionUsername");
-            transmissionPassword = configuration.GetValue<String>("transmissionPassword");
+            String? transmissionPassword = configuration.GetValue<String>("transmissionPassword");
-            destinationFolder = configuration.GetValue<String>("destinationFolder");
+            String destinationFolder = configuration.GetValue<String>("destinationFolder")!;
 
             Console.WriteLine($"Using transmission server {transmissionHost}");
-            transmissionClient = new Transmission.API.RPC.Client(transmissionHost, null, transmissionUsername, transmissionPassword);
+            TransmissionService transmission;
-            var sessionInformation = transmissionClient.GetSessionInformation();
+            try
-            if (sessionInformation == null || String.IsNullOrEmpty(sessionInformation.Version))
             {
-                Console.WriteLine("An error occurred while receiving session information from the rpc server");
+                transmission = await TransmissionService.ConnectAsync(transmissionHost, transmissionUsername, transmissionPassword);
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(ex.Message);
                 return;
             }
 
-
+            var nyaa = new NyaaRssReader();
-            HttpClient httpClient = new HttpClient();
+            List<NyaaRssItem> items;
-            var response = httpClient.GetStringAsync(url).Result;
+            try
-            if(response == null)
             {
-                Console.WriteLine("An error occurred while contacting Nyaa for a response");
+                items = await nyaa.ReadAsync(url);
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"An error occurred while contacting Nyaa for a response: {ex.Message}");
                 return;
             }
-            XDocument doc = XDocument.Parse(response);
+            if (items.Count == 0)
-            XNamespace nyaaNS = doc.Root.GetNamespaceOfPrefix("nyaa");
+            {
-            var items = from item in doc.Descendants("channel").Elements("item")
+                Console.WriteLine("No items found in the feed");
-                        select new
+                return;
-                        {
+            }
-                            Title = item.Element("title").Value,
+
-                            Published = item.Element("pubDate").Value,
-                            Category = item.Element(nyaaNS + "category").Value,
-                            CategoryID = item.Element(nyaaNS + "categoryId").Value,
-                            Size = item.Element(nyaaNS + "size").Value,
-                            Link = item.Element("link").Value,
-                            Description = item.Element("description").Value,
-                            PostID = item.Element("guid").Value,
-                        };
             Console.WriteLine("Downloading ..");
             foreach ( var item in items )
             {
                 Console.WriteLine($"{item.Title}");
             }
-            String transmissionDirectoryName = items.First().Title.Trim();
+            String transmissionDirectoryName = TorrentDirectoryNamer.FromTitle(items.First().Title, destinationFolder);
-            transmissionDirectoryName = System.Text.RegularExpressions.Regex.Replace(transmissionDirectoryName, @"E\d{2,3}.*?(\d{3,4}p)", " $1");
+            Console.WriteLine($"{items.Count} item(s) to {transmissionDirectoryName}");
-            transmissionDirectoryName = System.Text.RegularExpressions.Regex.Replace(transmissionDirectoryName, @"\s\(.*?\)$", "");
-            transmissionDirectoryName = destinationFolder + (destinationFolder.EndsWith("/") ? String.Empty : "/") + transmissionDirectoryName.Replace(" ", ".");
-            Console.WriteLine($"{items.Count()} item(s) to {transmissionDirectoryName}");
 
             Console.WriteLine("Continue?");
             if(Console.ReadKey().KeyChar != 'y')
@@ -80,30 +69,10 @@ namespace MassTorrentAdd
             }
             foreach (var item in items)
             {
-                var torrentData = httpClient.GetByteArrayAsync(item.Link).Result;
+                var torrentData = await nyaa.DownloadTorrentAsync(item);
-                AddNewTorrentFileToServer(torrentData, transmissionDirectoryName);
+                await transmission.AddNewTorrentFileToServerAsync(torrentData, transmissionDirectoryName);
             }
             Console.WriteLine("Completed");
         }
-        private static void AddNewTorrentFileToServer(byte[] torrentFileData, String saveLocation)
-        {
-            Transmission.API.RPC.Entity.NewTorrent newTorrent = new()
-            {
-                DownloadDirectory = saveLocation,
-                Paused = true,
-                Metainfo = Convert.ToBase64String(torrentFileData)
-            };
-            var torrentInfo = transmissionClient.TorrentAdd(newTorrent);
-            var seedSettings =  new Transmission.API.RPC.Arguments.TorrentSettings()
-            {
-                SeedRatioLimit = 1.0,
-                SeedRatioMode = 1,
-                IDs = [torrentInfo.ID]
-            };
-
-            transmissionClient.TorrentSet(seedSettings);
-            //transmissionClient.TorrentVerify(new object[] { torrentInfo.ID });
-
-        }
     }
 }