public async Task <IActionResult> Create(
[FromBody] SubmissionForm submissionForm,
[FromServices] Channel <EditVideoMessage> channel,
[FromServices] TemporaryFileStorage temporaryFileStorage)
{
if (!temporaryFileStorage.TemporaryFileExists(submissionForm.Video))
{
return(BadRequest());
}
var submission = new Submission
{
TrickId = submissionForm.TrickId,
Description = submissionForm.Description,
VideoProcessed = false,
UserId = UserId
};
_ctx.Add(submission);
await _ctx.SaveChangesAsync();
await channel.Writer.WriteAsync(new EditVideoMessage
{
SubmissionId = submission.Id,
Input = submissionForm.Video,
});
return(Ok(submission));
}
public IActionResult DeleteTemporaryVideo(string fileName)
{
if (!_temporaryFileStorage.TemporaryFileExists(fileName))
{
return(NoContent());
}
_temporaryFileStorage.DeleteTemporaryFile(fileName);
return(Ok());
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (await _channelReader.WaitToReadAsync(stoppingToken))
{
var message = await _channelReader.ReadAsync(stoppingToken);
var inputPath = _temporaryFileStorage.GetSavePath(message.Input);
var outputConvertedName = TrickingLibraryConstants.Files.GenerateConvertedFileName();
var outputThumbnailName = TrickingLibraryConstants.Files.GenerateThumbnailFileName();
var outputConvertedPath = _temporaryFileStorage.GetSavePath(outputConvertedName);
var outputThumbnailPath = _temporaryFileStorage.GetSavePath(outputThumbnailName);
try
{
var startInfo = new ProcessStartInfo
{
FileName = _fileSettingsMonitor.CurrentValue.FFMPEGPath,
Arguments = $"-y -i {inputPath} -an -vf scale=540x380 {outputConvertedPath} -ss 00:00:00 -vframes 1 -vf scale=540x380 {outputThumbnailPath}",
CreateNoWindow = true,
UseShellExecute = false,
};
using (var process = new Process {
StartInfo = startInfo
})
{
process.Start();
process.WaitForExit();
}
if (!_temporaryFileStorage.TemporaryFileExists(outputConvertedName))
{
throw new Exception("FFMPEG failed to generate converted video");
}
if (!_temporaryFileStorage.TemporaryFileExists(outputThumbnailName))
{
throw new Exception("FFMPEG failed to generate thumbnail");
}
using (var scope = _serviceProvider.CreateScope())
{
var ctx = scope.ServiceProvider.GetRequiredService <AppDbContext>();
var submission = ctx.Submissions.FirstOrDefault(x => x.Id.Equals(message.SubmissionId));
using (var videoStream = File.Open(outputConvertedPath, FileMode.Open, FileAccess.Read))
using (var thumbnailStream = File.Open(outputThumbnailPath, FileMode.Open, FileAccess.Read))
{
var videoLink = _fileProvider.SaveVideoAsync(videoStream);
var thumbLink = _fileProvider.SaveThumbnailAsync(thumbnailStream);
submission.Video = new Video
{
VideoLink = await videoLink,
ThumbLink = await thumbLink,
};
}
submission.VideoProcessed = true;
await ctx.SaveChangesAsync(stoppingToken);
}
}
catch (Exception e)
{
_logger.LogError(e, "Video Processing Failed for {0}", message.Input);
}
finally
{
_temporaryFileStorage.DeleteTemporaryFile(outputConvertedName);
_temporaryFileStorage.DeleteTemporaryFile(outputThumbnailName);
_temporaryFileStorage.DeleteTemporaryFile(message.Input);
}
}
}
