public async Task <byte[]> DownloadTrack(string url, IProgressBar trackProgress, string title, int retries = 3)
{
var attempts = 1;
while (attempts <= retries)
{
try
{
using (HttpResponseMessage downloadResponse = await _httpClient.GetAsync(url, HttpCompletionOption.ResponseHeadersRead))
{
if (downloadResponse.IsSuccessStatusCode && downloadResponse.Content.Headers.ContentLength.HasValue)
{
return(await DownloadWithProgress(downloadResponse, trackProgress, title));
}
}
}
catch (HttpRequestException ex)
{
Console.WriteLine(ex.Message);
}
attempts++;
trackProgress.Next("Request failed, waiting 5s...");
await Task.Delay(5000);
}
return(null);
}
private async Task <byte[]> GetDecryptedBytes(TrackInfo trackInfo, AudioQuality audioQuality, IProgressBar trackProgress, string progressTitle)
{
trackProgress.Next($"{progressTitle} | Grabbing download URL");
string downloadUrl = EncryptionHandler.GetDownloadUrl(trackInfo, (int)audioQuality);
byte[] encryptedBytes = await _deezerHttp.DownloadTrack(downloadUrl, trackProgress, progressTitle);
if (encryptedBytes == null || encryptedBytes.Length == 0)
{
Helpers.RedMessage("Failed to download encrypted track");
return(new byte[0]);
}
trackProgress.Next($"{progressTitle} | Decrypting track");
return(await EncryptionHandler.DecryptTrack(encryptedBytes, trackInfo.TrackTags.Id));
}
private async Task <byte[]> DownloadWithProgress(HttpResponseMessage response, IProgressBar trackProgress, string title)
{
// thanks stackoverflow
using (Stream fileStream = await response.Content.ReadAsStreamAsync())
{
// ReSharper disable once PossibleInvalidOperationException
long total = response.Content.Headers.ContentLength.Value;
double totalMegabytes = ByteSize.FromBytes(total).MegaBytes;
totalMegabytes = Math.Round(totalMegabytes, 2);
var finalBytes = new byte[total];
var totalRead = 0L;
var buffer = new byte[4096];
var isMoreToRead = true;
do
{
int read = await fileStream.ReadAsync(buffer, 0, buffer.Length);
if (read == 0)
{
trackProgress.Next($"{title} | Download Complete");
isMoreToRead = false;
}
else
{
var data = new byte[read];
buffer.ToList().CopyTo(0, data, 0, read);
data.CopyTo(finalBytes, totalRead);
totalRead += read;
double percent = totalRead * 1d / (total * 1d) * 100;
double totalReadMegabytes = ByteSize.FromBytes(totalRead).MegaBytes;
totalReadMegabytes = Math.Round(totalReadMegabytes, 2);
trackProgress.Refresh(Convert.ToInt32(percent), $"{title} | {totalReadMegabytes}MB/{totalMegabytes}MB");
}
} while (isMoreToRead);
return(finalBytes);
}
}
public void Next(string item)
{
_bar.Next(item);
}
