public async Task <List <NicoVideo> > GetNicoVideoItemsAsync(params string[] idList)
{
List <NicoVideo> videos = new List <NicoVideo>();
using (var releaser = await _VideoIdToNicoVideoLock.LockAsync())
{
foreach (var id in idList)
{
NicoVideo nicoVideo = null;
if (false == _VideoIdToNicoVideo.ContainsKey(id))
{
nicoVideo = new NicoVideo(_HohoemaApp, id, _HohoemaApp.MediaManager);
_VideoIdToNicoVideo.Add(id, nicoVideo);
}
else
{
nicoVideo = _VideoIdToNicoVideo[id];
}
videos.Add(nicoVideo);
}
}
foreach (var video in videos.AsParallel())
{
await video.Initialize();
}
return(videos);
}
public override async Task <Uri> GenerateVideoContentUrl()
{
// Lowクオリティ
await NicoVideo.VisitWatchPage();
return(NicoVideo.LegacyVideoUrl);
}
public async Task RequestCache(bool forceUpdate = false)
{
if (!CanDownload)
{
return;
}
var isCacheFileExist = false;
using (var releaser = await _Lock.LockAsync())
{
isCacheFileExist = !forceUpdate && (IsCached || NowCacheDonwloading);
}
if (isCacheFileExist)
{
// update cached time
await GetCacheFile();
return;
}
using (var releaser = await _Lock.LockAsync())
{
VideoDownloadManager.DownloadStarted += VideoDownloadManager_DownloadStarted;
IsCacheRequested = true;
CacheState = NicoVideoCacheState.Pending;
VideoFileCreatedAt = DateTime.Now;
await VideoDownloadManager.AddCacheRequest(NicoVideo.RawVideoId, Quality, forceUpdate);
await NicoVideo.OnCacheRequested();
}
}
public DividedQualityNicoVideo(NicoVideoQuality quality, NicoVideo nicoVideo, NiconicoMediaManager mediaManager)
{
Quality = quality;
NicoVideo = nicoVideo;
HohoemaApp = nicoVideo.HohoemaApp;
NiconicoMediaManager = mediaManager;
VideoDownloadManager = mediaManager.VideoDownloadManager;
}
public override async Task <Uri> GenerateVideoContentUrl()
{
// Originalクオリティ
if (NicoVideo.LegacyVideoUrl == null)
{
await NicoVideo.VisitWatchPage();
}
return(NicoVideo.LegacyVideoUrl);
}
/// <summary>
/// キャッシュダウンロードのタスクから
/// ダウンロードの情報を復元します
/// </summary>
/// <returns></returns>
private async Task RestoreBackgroundDownloadTask()
{
// TODO: ユーザーのログイン情報を更新してダウンロードを再開する必要がある？
// ユーザー情報の有効期限が切れていた場合には最初からダウンロードし直す必要があるかもしれません
var tasks = await BackgroundDownloader.GetCurrentDownloadsForTransferGroupAsync(_NicoCacheVideoBGTransferGroup);
foreach (var task in tasks)
{
NicoVideoCacheProgress info = null;
try
{
var _info = VideoCacheManager.CacheRequestInfoFromFileName(task.ResultFile);
var nicoVideo = new NicoVideo(_info.RawVideoId, _HohoemaApp.ContentProvider, _HohoemaApp.NiconicoContext, _HohoemaApp.CacheManager);
var session = await nicoVideo.CreateVideoStreamingSession(_info.Quality, forceDownload : true);
if (session?.Quality == _info.Quality)
{
continue;
}
info = new NicoVideoCacheProgress(_info, task, session);
await RestoreDonloadOperation(info, task);
Debug.WriteLine($"実行中のキャッシュBGDLを補足: {info.RawVideoId} {info.Quality}");
}
catch
{
Debug.WriteLine(task.ResultFile + "のキャッシュダウンロード操作を復元に失敗しました");
continue;
}
try
{
task.Resume();
}
catch
{
if (task.Progress.Status != BackgroundTransferStatus.Running)
{
await RemoveDownloadOperation(info);
// ダウンロード再開に失敗したらキャッシュリクエストに積み直します
// 失敗の通知はここではなくバックグラウンドタスクの 後処理 として渡されるかもしれません
DownloadProgress?.Invoke(this, info);
}
}
}
}
internal async Task NotifyCacheForceDeleted(NicoVideo nicoVideo)
{
// キャッシュ登録を削除
var videoInfo = await VideoInfoDb.GetAsync(nicoVideo.RawVideoId);
if (videoInfo != null)
{
videoInfo.IsDeleted = true;
await VideoInfoDb.UpdateAsync(videoInfo);
}
var toastService = App.Current.Container.Resolve <Views.Service.ToastNotificationService>();
toastService.ShowText("動画削除：" + nicoVideo.RawVideoId
, $"{nicoVideo.Title} はニコニコ動画サーバーから削除されたため、キャッシュを強制削除しました。"
, Microsoft.Toolkit.Uwp.Notifications.ToastDuration.Long
);
}
public NGResult IsNgVideo(NicoVideo info)
{
NGResult result = null;
result = IsNgVideoOwnerId(info.OwnerId.ToString());
if (result != null)
{
return(result);
}
result = IsNGVideoId(info.RawVideoId);
if (result != null)
{
return(result);
}
result = IsNGVideoTitle(info.Title);
if (result != null)
{
return(result);
}
return(result);
}
public async Task <NicoVideo> GetNicoVideoAsync(string rawVideoId, bool withInitialize = true)
{
NicoVideo nicoVideo = null;
using (var releaser = await _VideoIdToNicoVideoLock.LockAsync())
{
if (false == _VideoIdToNicoVideo.ContainsKey(rawVideoId))
{
nicoVideo = new NicoVideo(_HohoemaApp, rawVideoId, _HohoemaApp.MediaManager);
_VideoIdToNicoVideo.Add(rawVideoId, nicoVideo);
}
else
{
nicoVideo = _VideoIdToNicoVideo[rawVideoId];
}
}
if (withInitialize)
{
await nicoVideo.Initialize();
}
return(nicoVideo);
}
public DmcQualityNicoVideo(NicoVideoQuality quality, NicoVideo nicoVideo, NiconicoMediaManager context)
: base(quality, nicoVideo, context)
{
}
public OriginalQualityNicoVideo(NicoVideo nicoVideo, NiconicoMediaManager context)
: base(NicoVideoQuality.Original, nicoVideo, context)
{
}
public LowQualityNicoVideo(NicoVideo nicoVideo, NiconicoMediaManager context)
: base(NicoVideoQuality.Low, nicoVideo, context)
{
}
public DmcQualityNicoVideo(NicoVideoQuality quality, NicoVideo nicoVideo, VideoCacheManager context)
: base(quality, nicoVideo, context)
{
}
public OriginalQualityNicoVideo(NicoVideo nicoVideo, VideoCacheManager context)
: base(NicoVideoQuality.Smile_Original, nicoVideo, context)
{
}
public LowQualityNicoVideo(NicoVideo nicoVideo, VideoCacheManager context)
: base(NicoVideoQuality.Smile_Low, nicoVideo, context)
{
}
// 次のキャッシュダウンロードを試行
// ダウンロード用の本数
private async Task TryNextCacheRequestedVideoDownload()
{
if (State != CacheManagerState.Running)
{
return;
}
NicoVideoCacheRequest nextDownloadItem = null;
using (var releaser = await _CacheRequestProcessingLock.LockAsync())
{
while (CanAddDownloadLine)
{
if (_DownloadOperations.Count == 0)
{
nextDownloadItem = _CacheDownloadPendingVideos
.FirstOrDefault();
}
if (nextDownloadItem == null)
{
break;
}
if (_DownloadOperations.Any(x => x.RawVideoId == nextDownloadItem.RawVideoId && x.Quality == nextDownloadItem.Quality))
{
_CacheDownloadPendingVideos.Remove(nextDownloadItem);
break;
}
Debug.WriteLine($"キャッシュ準備を開始: {nextDownloadItem.RawVideoId} {nextDownloadItem.Quality}");
// 動画ダウンロードURLを取得
var nicoVideo = new NicoVideo(nextDownloadItem.RawVideoId, _HohoemaApp.ContentProvider, _HohoemaApp.NiconicoContext, _HohoemaApp.CacheManager);
var videoInfo = await _HohoemaApp.ContentProvider.GetNicoVideoInfo(nextDownloadItem.RawVideoId);
// DownloadSessionを保持して、再生完了時にDisposeさせる必要がある
var downloadSession = await nicoVideo.CreateVideoStreamingSession(nextDownloadItem.Quality, forceDownload : true);
var uri = await downloadSession.GetDownloadUrlAndSetupDonwloadSession();
var downloader = new BackgroundDownloader()
{
TransferGroup = _NicoCacheVideoBGTransferGroup
};
downloader.SuccessToastNotification = MakeSuccessToastNotification(videoInfo);
downloader.FailureToastNotification = MakeFailureToastNotification(videoInfo);
// 保存先ファイルの確保
var filename = VideoCacheManager.MakeCacheVideoFileName(
videoInfo.Title,
nextDownloadItem.RawVideoId,
videoInfo.MovieType,
downloadSession.Quality
);
var videoFolder = await _HohoemaApp.GetVideoCacheFolder();
var videoFile = await videoFolder.CreateFileAsync(filename, CreationCollisionOption.OpenIfExists);
// ダウンロード操作を作成
var operation = downloader.CreateDownload(uri, videoFile);
var progress = new NicoVideoCacheProgress(nextDownloadItem, operation, downloadSession);
await AddDownloadOperation(progress);
Debug.WriteLine($"キャッシュ準備完了: {nextDownloadItem.RawVideoId} {nextDownloadItem.Quality}");
// ダウンロードを開始
/*
* if (Helpers.ApiContractHelper.IsFallCreatorsUpdateAvailable)
* {
* operation.IsRandomAccessRequired = true;
* }
*/
var action = operation.StartAsync();
action.Progress = OnDownloadProgress;
var task = action.AsTask();
TaskIdToCacheProgress.Add(task.Id, progress);
var _ = task.ContinueWith(OnDownloadCompleted);
VideoCacheStateChanged?.Invoke(this, new VideoCacheStateChangedEventArgs()
{
CacheState = NicoVideoCacheState.Downloading,
Request = progress
});
Debug.WriteLine($"キャッシュ開始: {nextDownloadItem.RawVideoId} {nextDownloadItem.Quality}");
SendUpdatableToastWithProgress(videoInfo.Title, nextDownloadItem);
// DL作業を作成できたらDL待ちリストから削除
_CacheDownloadPendingVideos.Remove(nextDownloadItem);
await SaveDownloadRequestItems();
}
}
}