public static string RetrieveHeader(this HttpRequest request,
string header,
IHeaderSettings settings)
{
if (request.Headers.TryGetValue(header, out StringValues headerValues))
{
var headersList = headerValues.ToList();
if (headersList.Count != 1)
{
return(null);
}
var headerValue = headersList.FirstOrDefault();
if (!settings.AcceptableValuesForHeader[header].Contains(headerValue?.ToLower()))
{
return(null);
}
return(headerValue);
}
return(null);
}
public CoverController(ICoverService coverService,
IFileSystem fileSystem,
IHeaderSettings headerSettings) : base(fileSystem)
{
_coverService = coverService ?? throw new ArgumentNullException(nameof(coverService));
_headerSettings = headerSettings ?? throw new ArgumentException(nameof(headerSettings));
}
public EditionController(IEditionService editionService, IFileSystem fileSystem, IHeaderSettings headerSettings) : base(fileSystem)
{
_editionService = editionService ?? throw new ArgumentNullException(nameof(editionService));
_headerSettings = headerSettings ?? throw new ArgumentNullException(nameof(headerSettings));
}
public BookController(IBookService bookService, IHeaderSettings headerSettings)
{
_bookService = bookService ?? throw new ArgumentNullException(nameof(bookService));
_headerSettings = headerSettings ?? throw new ArgumentException(nameof(headerSettings));
}
protected virtual async Task <HttpResponseMessage> BaseTextRecognitionUpload <TData>(List <IFormFile> imageFiles,
Func <ImageModel, Task <TData> > strategy,
StorageSettings storageSettings,
IHeaderSettings headerSettings)
where TData : IRecognizable
{
if (Request.GetMultipartBoundary() == null)
{
return(new HttpResponseMessage {
StatusCode = HttpStatusCode.UnsupportedMediaType
});
}
var languageToProccess = Request.RetrieveHeader("Target-Language", headerSettings);
if (languageToProccess == null)
{
return(new HttpResponseMessage {
StatusCode = HttpStatusCode.BadRequest, ReasonPhrase = "Specify appropriate target language."
});
}
var clientFolderId = Guid.NewGuid();
string currentProviderPath = _fileSystem.Path.Combine(storageSettings.StoragePath, clientFolderId.ToString());
_fileSystem.Directory.CreateDirectory(currentProviderPath);
try
{
List <string> files = new List <string>();
var dataTasks = new List <Task <TData> >();
foreach (var formFile in imageFiles)
{
if (formFile.Length > 0)
{
using (var stream = new FileStream(_fileSystem.Path.Combine(currentProviderPath, formFile.FileName), FileMode.Create))
{
await formFile.CopyToAsync(stream);
}
}
files.Add(_fileSystem.Path.GetFileName(formFile.FileName));
var imageToSave = new ImageModel
{
Path = _fileSystem.Path.Combine(currentProviderPath, formFile.FileName),
TargetLanguage = languageToProccess
};
dataTasks.Add(strategy.Invoke(imageToSave));
}
var results = await Task.WhenAll(dataTasks);
_fileSystem.Directory.Delete(currentProviderPath);
var resultingDict = Enumerable.Range(0, results.Length).ToDictionary(i => files[i], i => results[i].RawData);
return(new HttpResponseMessage {
StatusCode = HttpStatusCode.OK, Content = new StringContent(resultingDict.GetString())
});
}
catch (Exception e)
{
return(new HttpResponseMessage {
StatusCode = HttpStatusCode.InternalServerError, ReasonPhrase = e.Message
});
}
}