//async: In an asynchronous process, the application can continue with other work that doesn't depend on the web resource until the potentially blocking task finishes.
public async Task <HttpResponseMessage> AddFile(string directory)
{
//kytodo fix userid
//string userId = GetUserID();
string userId = "";
HttpContent content = Request.Content;
string model = "";
List <Tag> tags = new List <Tag>();
// Check if the request contains multipart/form-data.
if (!Request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
InMemoryMultipartStreamProviderService provider = await content.ReadAsMultipartAsync(new InMemoryMultipartStreamProviderService());
if (provider.FormData["base64Image"] == null)
{
throw new HttpResponseException(HttpStatusCode.BadRequest);
}
ItemResponse <bool> response = new ItemResponse <bool>();
response.Item = await _fileService.AddFile(provider, directory, userId);
return(Request.CreateResponse(response));
}
//InMemoryMultipartStreamProvider: custom class that extracts the data from my uploaded file
public async Task <bool> AddFile(InMemoryMultipartStreamProviderService provider, string directory, string userId)
{
//instantiating an object (thing = new thing()), you set up a variable and are creating an object that your variable represents
List <string> fileNames = new List <string>();
List <Tag> tags = new List <Tag>();
File model = new File();
string jsonTags = provider.FormData["fileTags"];
if (!String.IsNullOrEmpty(jsonTags))
{
tags = JsonConvert.DeserializeObject <List <Tag> >(jsonTags);
}
// = {InMemoryMultipartStreamProvider}.{form-data; name="fileUpload4"; filename="imageName.jpg"} <<<-----(files uploaded and their metadata)
//HttpContent file = provider.Files[0];
string fileName = await ProcessFile(provider.FormData["fileName"], directory, provider.FormData["base64Image"]);
fileNames.Add(fileName);
model.FileName = fileName;
model.FileDirectory = directory;
model.FilePath = "https://backslash.s3-us-west-2.amazonaws.com/" + model.FileDirectory + "/" + fileName.Replace(" ", "%20");
model.UserId = userId;
using (DataContext _dc = new DataContext())
{
bool result = false;
var entity = _dc.Files.FirstOrDefault(x => x.FileId == model.FileId);
if (entity == null)
{
entity = new File();
entity.UserId = model.UserId;
entity.FileName = model.FileName;
entity.FilePath = model.FilePath;
entity.FileDirectory = model.FileDirectory;
entity.DateAdded = DateTimeOffset.Now;
entity.DateModified = DateTimeOffset.Now;
_dc.Files.Add(entity);
}
else
{
entity.FileName = model.FileName;
entity.DateModified = DateTimeOffset.Now;
}
result = Convert.ToBoolean(_dc.SaveChanges());
//if the upload was successful, insert or update any related tags
if (result)
{
result = AddOrUpdateFileTags(entity.FileId, tags);
}
return(result);
}
}
public Task <bool> AddFile(InMemoryMultipartStreamProviderService provider, string directory, string userId)
{
return(_fileRepository.AddFile(provider, directory, userId));
}
