public override void OnActionExecuting(HttpActionContext actionContext)
{
var flowJs = new FlowJsRepo();
var request = actionContext.Request;
var validationRules = new FlowValidationRules();
validationRules.AcceptedExtensions.AddRange(Extensions);
validationRules.MaxFileSize = Size;
var status = flowJs.PostChunk(HttpContext.Current.Request, Path.GetTempPath(), validationRules);
if (status.Status == PostChunkStatus.Done)
{
var filepath = Path.Combine(Path.GetTempPath(), status.FileName);
var p = actionContext.ActionDescriptor.GetParameters()
.FirstOrDefault(x => x.ParameterType == typeof(FlowFile));
if (filepath != null)
{
actionContext.ActionArguments[p.ParameterName] = new FlowFile
{
originalFilename = status.OriginalFileName,
flowFilename = status.FileName,
path = filepath,
Identifier = status.Identifier
};
return;
}
}
actionContext.Response = new System.Net.Http.HttpResponseMessage(HttpStatusCode.Accepted);
base.OnActionExecuting(actionContext);
}
internal bool ValidateBusinessRules(FlowValidationRules rules, out List <string> errorMessages)
{
errorMessages = new List <string>();
//if (rules.MaxFileSize.HasValue && TotalSize > rules.MaxFileSize.Value)
// errorMessages.Add(rules.MaxFileSizeMessage ?? "size");
if (rules.AcceptedExtensions.Count > 0 && rules.AcceptedExtensions.SingleOrDefault(x => x == FileName.Split('.').Last()) == null)
{
errorMessages.Add(rules.AcceptedExtensionsMessage ?? "type");
}
return(errorMessages.Count == 0);
}
private FlowJsPostChunkResponse PostChunkBase(HttpRequest request, string folder, FlowValidationRules validationRules)
{
var chunk = new FlowChunk();
var requestIsSane = chunk.ParseForm(request.Form);
if (!requestIsSane)
{
var errResponse = new FlowJsPostChunkResponse();
errResponse.Status = PostChunkStatus.Error;
errResponse.ErrorMessages.Add("damaged");
}
List <string> errorMessages = null;
var file = request.Files[0];
chunk.FileName = Guid.NewGuid().ToString() + System.IO.Path.GetExtension(chunk.FileName); //chunk.FileName.Split('.')[1];
var response = new FlowJsPostChunkResponse {
FileName = chunk.FileName, Identifier = chunk.Identifier, Size = chunk.TotalSize, OriginalFileName = file.FileName
};
var chunkIsValid = true;
if (validationRules != null)
{
chunkIsValid = chunk.ValidateBusinessRules(validationRules, out errorMessages);
}
if (!chunkIsValid)
{
response.Status = PostChunkStatus.Error;
response.ErrorMessages = errorMessages;
return(response);
}
var chunkFullPathName = GetChunkFilename(chunk.Number, chunk.Identifier, folder);
try
{
// create folder if it does not exist
if (!Directory.Exists(folder))
{
Directory.CreateDirectory(folder);
}
// save file
file.SaveAs(chunkFullPathName);
}
catch (Exception)
{
throw;
}
// see if we have more chunks to upload. If so, return here
for (int i = 1, l = chunk.TotalChunks; i <= l; i++)
{
var chunkNameToTest = GetChunkFilename(i, chunk.Identifier, folder);
var exists = File.Exists(chunkNameToTest);
if (!exists)
{
response.Status = PostChunkStatus.PartlyDone;
return(response);
}
}
// if we are here, all chunks are uploaded
var fileAry = new List <string>();
for (int i = 1, l = chunk.TotalChunks; i <= l; i++)
{
fileAry.Add("flow-" + chunk.Identifier + "." + i);
}
MultipleFilesToSingleFile(folder, fileAry, chunk.FileName);
for (int i = 0, l = fileAry.Count; i < l; i++)
{
try
{
File.Delete(Path.Combine(folder, fileAry[i]));
}
catch (Exception)
{
}
}
response.Status = PostChunkStatus.Done;
return(response);
}
public FlowJsPostChunkResponse PostChunk(HttpRequest request, string folder, FlowValidationRules validationRules)
{
return(PostChunkBase(request, folder, validationRules));
}