public async Task DeleteAndDownload(List <VkSongModel> toDownload, List <string> toDelete)
{
UiSynchronizer.Run(o =>
{
var page = (MusicLoaderPage)o.Content;
if (page == null)
{
return;
}
page.LbProgress.Content = "Удаление удаленных песен...";
});
var dir = SettingsManager.Get(SettingsRequisites.Directory);
foreach (var fileName in toDelete)
{
File.Delete(Path.Combine(dir, fileName));
}
await DownloadSongs(toDownload);
UiSynchronizer.Run(o =>
{
var page = (MusicLoaderPage)o.Content;
page.LbProgress.Content = "Готово";
if (page == null)
{
return;
}
page.SyncLabels();
});
}
private async Task DownloadBatch(IEnumerable <VkSongModel> batch)
{
batch = batch.Take(BatchSize).ToList();
if (!batch.Any())
{
return;
}
var jsonContent = "";
var trying = 0;
while (string.IsNullOrEmpty(jsonContent))
{
var client = new RestClient("https://vk.com");
var request = new RestRequest("al_audio.php", Method.POST);
request.AddParameter("act", "reload_audio");
request.AddParameter("al", 1);
request.AddParameter("ids", string.Join(",", batch.Skip(1).Select(i => i.UniqueId)));
jsonContent = await SendAlAudioRequest(Sid, request, client);
if (string.IsNullOrEmpty(jsonContent))
{
trying++;
if (trying > 5)
{
return;
}
var msg = $"Кажется VK перестал отдавать треки из-за таймаута ({trying}) :( надо подождать 10 сек";
UiSynchronizer.Run((o, d) =>
{
var page = (MusicLoaderPage)o.Content;
if (page == null)
{
return;
}
page.LbProgress.Content = d;
}, msg);
await Task.Delay(1000);
}
}
var data = JsonConvert.DeserializeObject <List <object[]> >(jsonContent)
.Select(VkSongModel.FromJson)
.ToList();
data.ForEach(x => x.Unmask(Uid));
var abortSignal = false;
foreach (var vkSongModel in data)
{
if (abortSignal)
{
UiSynchronizer.Run(o =>
{
var page = (MusicLoaderPage)o.Content;
if (page == null)
{
return;
}
page.LbProgress.Content = string.Empty;
page.ProgressBar.Value = 0;
abortSignal = page.MarkerToStopDownload;
});
throw new AbortedException();
}
var webClient = new WebClient();
var filePath = Path.Combine(Directory, vkSongModel.FileName);
webClient.DownloadProgressChanged += (sender, args) =>
{
var msg = $"Скачивание {vkSongModel.FileName}";
UiSynchronizer.Run((o, d) =>
{
var page = (MusicLoaderPage)o.Content;
if (page == null)
{
return;
}
page.LbProgress.Content = d;
page.ProgressBar.Value = args.ProgressPercentage;
abortSignal = page.MarkerToStopDownload;
}, msg);
};
await webClient.DownloadFileTaskAsync(vkSongModel.Url, filePath);
UiSynchronizer.Run(o =>
{
var page = (MusicLoaderPage)o.Content;
if (page == null)
{
return;
}
page.SyncLabels();
abortSignal = page.MarkerToStopDownload;
});
}
}