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;
}
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);
}
public async Task<IHttpActionResult> PictureUploadPost()
{
var request = HttpContext.Current.Request;
var validationRules = new FlowValidationRules();
validationRules.AcceptedExtensions.AddRange(new List<string> { "jpeg", "jpg", "png", "bmp" });
validationRules.MaxFileSize = 5000000;
try
{
var status = _flowJs.PostChunk(request, Folder, validationRules);
if (status.Status == PostChunkStatus.Done)
{
// file uploade is complete. Below is an example of further file handling
var filePath = Path.Combine(Folder, status.FileName);
var file = File.ReadAllBytes(filePath);
var picture = await _fileManager.UploadPictureToS3(User.Identity.GetUserId(), file, status.FileName);
File.Delete(filePath);
return Ok(picture);
}
if (status.Status == PostChunkStatus.PartlyDone)
{
return Ok();
}
status.ErrorMessages.ForEach(x => ModelState.AddModelError("file", x));
return BadRequest(ModelState);
}
catch (Exception)
{
ModelState.AddModelError("file", "exception");
return BadRequest(ModelState);
}
}
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];
var response = new FlowJsPostChunkResponse {
FileName = chunk.FileName, Size = chunk.TotalSize, Identifier = chunk.Identifier
};
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));
}
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];
var response = new FlowJsPostChunkResponse {FileName = chunk.FileName, Size = chunk.TotalSize};
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);
}
