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(".");
}
}
}
// ダウンロード完了
private async Task OnDownloadCompleted(Task <DownloadOperation> prevTask)
{
// 進捗付きトースト表示を削除
RemoveProgressToast();
var progress = TaskIdToCacheProgress[prevTask.Id];
await RemoveDownloadOperation(progress);
TaskIdToCacheProgress.Remove(prevTask.Id);
if (prevTask.IsFaulted)
{
Debug.WriteLine("キャッシュ失敗");
VideoCacheStateChanged?.Invoke(this, new VideoCacheStateChangedEventArgs()
{
Request = new NicoVideoCacheRequest()
{
RawVideoId = progress.RawVideoId,
RequestAt = progress.RequestAt,
Quality = progress.Quality,
IsRequireForceUpdate = progress.IsRequireForceUpdate
},
CacheState = NicoVideoCacheState.Pending
});
return;
}
Debug.WriteLine("キャッシュ完了");
if (prevTask.Result != null)
{
var op = progress.DownloadOperation;
if (op.Progress.Status == BackgroundTransferStatus.Completed)
{
if (op.Progress.TotalBytesToReceive == op.Progress.BytesReceived)
{
Debug.WriteLine("キャッシュ済み: " + op.ResultFile.Name);
var cacheInfo = new NicoVideoCacheInfo(progress, op.ResultFile.Path);
_CacheVideos.AddOrUpdate(cacheInfo.RawVideoId,
(x) =>
{
return(new List <NicoVideoCacheInfo>()
{
cacheInfo
});
},
(x, y) =>
{
var tempinfo = y.FirstOrDefault(z => z.Quality == cacheInfo.Quality);
if (tempinfo == null)
{
y.Add(cacheInfo);
}
else
{
tempinfo.RequestAt = cacheInfo.RequestAt;
tempinfo.FilePath = cacheInfo.FilePath;
}
return(y);
});
VideoCacheStateChanged?.Invoke(this, new VideoCacheStateChangedEventArgs()
{
Request = progress,
CacheState = NicoVideoCacheState.Cached
});
}
else
{
Debug.WriteLine("キャッシュキャンセル: " + op.ResultFile.Name);
VideoCacheStateChanged?.Invoke(this, new VideoCacheStateChangedEventArgs()
{
Request = new NicoVideoCacheRequest()
{
RawVideoId = progress.RawVideoId,
RequestAt = progress.RequestAt,
Quality = progress.Quality,
IsRequireForceUpdate = progress.IsRequireForceUpdate
},
CacheState = NicoVideoCacheState.Pending
});
}
}
else
{
Debug.WriteLine($"キャッシュ失敗: {op.ResultFile.Name} （再ダウンロードします）");
VideoCacheStateChanged?.Invoke(this, new VideoCacheStateChangedEventArgs()
{
Request = new NicoVideoCacheRequest()
{
RawVideoId = progress.RawVideoId,
RequestAt = progress.RequestAt,
Quality = progress.Quality,
IsRequireForceUpdate = progress.IsRequireForceUpdate
},
CacheState = NicoVideoCacheState.Pending
});
}
}
}