public FileDownloader(IFileDownloaderActions actions, AvailableFile file, int refreshProgresIntervalInMiliseconds)
{
_actions = actions;
_file = file;
_refreshProgresIntervalInMiliseconds = refreshProgresIntervalInMiliseconds;
_webClient = new WebClient();
}
public void DownloadErrorHappened(AvailableFile file)
{
if (_downloaders.ContainsKey(file))
{
_downloaders.TryRemove(file, out FileDownloader downloader);
}
_downloaderView.RefreshAvailableFiles();
}
private void AddDownloadedFile(AvailableFile file, byte[] data)
{
var downloadedFile = _downloadFileManager.CreateFile(file.Uri.Segments.Last(), _fileStoragePath, data);
lock (_downloadedFiles)
{
_downloadedFiles.Enqueue(downloadedFile);
}
}
public void StopDownload(AvailableFile file)
{
if (_downloaders.ContainsKey(file))
{
_downloaders[file].Stop();
}
else if (file.Status == FileStatusEnum.ForDownload)
{
file.Status = FileStatusEnum.DownloadStopped;
}
}
private void StartDownloadIfAvailable(AvailableFile file)
{
file.Modified = DateTime.Now;
file.Status = FileStatusEnum.ForDownload;
if (_appSettings.NumberOfDownloaders > _downloaders.Count)
{
if (!_downloaders.ContainsKey(file))
{
var fd = new FileDownloader(this, file, _appSettings.RefreshProgresIntervalInMiliseconds);
_downloaders.TryAdd(file, fd);
fd.Start();
}
}
}
public void DownloadCompleted(AvailableFile file, byte[] data)
{
_downloaders.TryRemove(file, out FileDownloader downloader);
AddDownloadedFile(file, data);
while (_appSettings.NumberOfDownloaders > _downloaders.Count && _availableFiles.Any(f => f.Status == FileStatusEnum.ForDownload))
{
var nextFile = _availableFiles.OrderBy(f => f.Modified).FirstOrDefault(f => f.Status == FileStatusEnum.ForDownload);
StartDownloadIfAvailable(nextFile);
}
if (_downloaders.Count == 0)
{
DeleteOldFiles();
}
_downloaderView.RefreshAvailableFiles();
_downloaderView.SetDownloadedFiles(_downloadedFiles);
}
public void StartDownload(AvailableFile file)
{
StartDownloadIfAvailable(file);
_downloaderView.RefreshAvailableFiles();
}
