private async Task RetrieveCacheCompletedVideos()
{
var videoFolder = await _HohoemaApp.GetVideoCacheFolder();
if (videoFolder != null)
{
var files = await videoFolder.GetFilesAsync();
foreach (var file in files)
{
if (file.FileType != ".mp4")
{
continue;
}
// ファイル名の最後方にある[]の中身の文字列を取得
// (動画タイトルに[]が含まれる可能性に配慮)
var match = NicoVideoIdRegex.Match(file.Name);
var id = match.Value;
var quality = NicoVideoQualityFileNameHelper.NicoVideoQualityFromFileNameExtention(file.Name);
var info = new NicoVideoCacheRequest()
{
RawVideoId = id,
Quality = quality,
};
if (string.IsNullOrEmpty(id))
{
continue;
}
var nicoVideo = await GetNicoVideoAsync(info.RawVideoId, false);
var div = nicoVideo.GetDividedQualityNicoVideo(quality);
await nicoVideo.RestoreCache(quality, file.Path);
await CacheRequested(info);
VideoCacheStateChanged?.Invoke(this, info, NicoVideoCacheState.Cached);
Debug.Write(".");
}
}
}
// バックグラウンドで動画キャッシュのダウンロードを行うタスクを作成
private async Task <DownloadOperation> DonwloadVideoInBackgroundTask(NicoVideoCacheRequest req)
{
using (var bgTaskLock = await _RegistrationBackgroundTaskLock.LockAsync())
{
using (var releaser = await _DownloadOperationsLock.LockAsync())
{
if (_DownloadOperations.Keys.Any(x => x.RawVideoId == req.RawVideoId && x.Quality == req.Quality))
{
return(null);
}
}
Debug.WriteLine($"キャッシュ準備を開始: {req.RawVideoId} {req.Quality}");
// 動画ダウンロードURLを取得
var nicoVideo = await MediaManager.GetNicoVideoAsync(req.RawVideoId);
var div = nicoVideo.GetDividedQualityNicoVideo(req.Quality);
if (div.IsCached)
{
if (!req.IsRequireForceUpdate)
{
using (var pendingVideoLockReleaser = await _CacheDownloadPendingVideosLock.LockAsync())
{
_CacheDownloadPendingVideos.Remove(req);
}
}
else
{
// キャッシュ済みのためダウンロードを行わない
// TODO: Completedイベントを発行
return(null);
}
}
Uri uri = null;
try
{
uri = await nicoVideo.SetupWatchPageVisit(req.Quality);
if (uri == null)
{
throw new Exception($"can't download {req.Quality} quality Video, in {req.RawVideoId}.");
}
}
catch
{
return(null);
}
var downloader = await ResetDownloader();
// 認証情報付きクッキーをダウンローダーのHttpヘッダにコピー
// 動画ページアクセス後のクッキーが必須になるため、サインイン時ではなく
// ダウンロード開始直前のこのタイミングでクッキーをコピーしています
var httpclinet = HohoemaApp.NiconicoContext.HttpClient;
foreach (var header in httpclinet.DefaultRequestHeaders)
{
downloader.SetRequestHeader(header.Key, header.Value);
}
// 保存先ファイルの確保
var filename = div.VideoFileName;
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);
downloader.CompletionGroup?.Enable();
await AddDownloadOperation(req, operation);
Debug.WriteLine($"キャッシュ準備完了: {req.RawVideoId} {req.Quality}");
// ダウンロードを開始
var action = operation.StartAsync();
action.Progress = OnDownloadProgress;
var task = action.AsTask().ContinueWith(OnDownloadCompleted).ConfigureAwait(false);
Debug.WriteLine($"キャッシュ開始: {req.RawVideoId} {req.Quality}");
return(operation);
}
}
private async Task RetrieveCacheCompletedVideos()
{
var videoFolder = await _HohoemaApp.GetVideoCacheFolder();
if (videoFolder != null)
{
var files = await videoFolder.GetFilesAsync();
foreach (var file in files)
{
if (!(file.FileType == ".mp4" || file.FileType == ".flv"))
{
continue;
}
// ファイル名の最後方にある[]の中身の文字列を取得
// (動画タイトルに[]が含まれる可能性に配慮)
var match = NicoVideoIdRegex.Match(file.Name);
var id = match.Groups[1]?.Value;
NicoVideoQuality quality = NicoVideoQuality.Unknown;
if (string.IsNullOrEmpty(id))
{
// 外部キャッシュとして取得可能かをチェック
match = ExternalCachedNicoVideoIdRegex.Match(file.Name);
if (match.Groups.Count > 0)
{
id = match.Groups[match.Groups.Count - 1].Value;
}
// 動画IDを抽出不可だった場合はスキップ
if (string.IsNullOrEmpty(id))
{
continue;
}
}
else
{
quality = VideoCacheManager.GetQualityFromFileName(file.Name);
}
var info = new NicoVideoCacheInfo()
{
RawVideoId = id,
Quality = quality,
FilePath = file.Path,
RequestAt = file.DateCreated.DateTime
};
_CacheVideos.AddOrUpdate(info.RawVideoId,
(x) =>
{
return(new List <NicoVideoCacheInfo>()
{
info
});
},
(x, y) =>
{
var tempinfo = y.FirstOrDefault(z => z.Quality == info.Quality);
if (tempinfo == null)
{
y.Add(info);
}
else
{
tempinfo.RequestAt = info.RequestAt;
tempinfo.FilePath = info.FilePath;
}
return(y);
});
VideoCacheStateChanged?.Invoke(this, new VideoCacheStateChangedEventArgs()
{
Request = info,
CacheState = NicoVideoCacheState.Cached
});
Debug.Write(".");
}
}
}