protected override async Task <int> OnExecuteAsync(CommandLineApplication app)
{
if (Directory.Exists(FilePath))
{
_logger.LogInformation("开始扫描文件夹，请稍等...");
var files = (await _fileScanner.ScanAsync(FilePath, new[] { "*.ncm" }))
.SelectMany(f => f.FilePaths)
.ToList();
_logger.LogInformation($"扫描完成，共 {files.Count} 个文件，准备转换。");
var wrapTask = new WarpTask(4);
var tasks = files.Select(path => wrapTask.RunAsync(() => Convert(path)));
await Task.WhenAll(tasks);
}
else if (File.Exists(FilePath))
{
await Convert(FilePath);
}
_logger.LogInformation("所有文件已经转换完成...");
return(0);
}
private async ValueTask DownloadLyricFilesAsync(ImmutableList <MusicInfo> musicInfos)
{
_logger.LogInformation("开始下载歌词文件数据...");
var downloaderList = GetLyricDownloaderList();
var warpTask = new WarpTask(ParallelNumber);
var warpTaskList = musicInfos.Select(info =>
warpTask.RunAsync(() => Task.Run(async() => await DownloadLyricTaskLogicAsync(downloaderList, info))));
await Task.WhenAll(warpTaskList);
_logger.LogInformation($"歌词数据下载完成，成功: {musicInfos.Count} 失败{0}。");
}
private async ValueTask DownloadAlbumAsync(ImmutableList <MusicInfo> musicInfos)
{
_logger.LogInformation("开始下载专辑图像数据...");
var downloader = _albumDownloaderList.FirstOrDefault(d => d.DownloaderName == InternalAlbumDownloaderNames.NetEase);
var warpTask = new WarpTask(ParallelNumber);
var warpTaskList = musicInfos.Select(info =>
warpTask.RunAsync(() => Task.Run(async() => await DownloadAlbumTaskLogicAsync(downloader, info))));
await Task.WhenAll(warpTaskList);
_logger.LogInformation($"专辑数据下载完成，成功: {musicInfos.Count(m => m.IsSuccessful)} 失败{musicInfos.Count(m => !m.IsSuccessful)}。");
}
private async Task <ImmutableList <MusicInfo> > LoadMusicInfoAsync(IReadOnlyCollection <string> files)
{
_logger.LogInformation("开始加载音乐文件的标签信息...");
var warpTask = new WarpTask(ParallelNumber);
var warpTaskList = files.Select(file => warpTask.RunAsync(() => Task.Run(async() => await _tagLoader.LoadTagAsync(file))));
var result = (await Task.WhenAll(warpTaskList))
.Where(m => m != null)
.Where(m => !string.IsNullOrEmpty(m.Name) || !string.IsNullOrEmpty(m.Artist));
_logger.LogInformation($"已成功加载 {files.Count} 个音乐文件的标签信息。");
return(result.ToImmutableList());
}