/// <summary>
/// Gets all info about meeting protocols from the database and returns a partial view containing a table of
/// this info.
/// </summary>
/// <returns>The rendered partial view.</returns>
public ActionResult GetLgProtocols()
{
IEnumerable<LgProtocolViewModel> viewModels;
using (IProtocolRepository repository = new ProtocolRepository())
{
List<LgProtocolModel> models = repository.GetLgProtocols().ToList();
viewModels = models.Select(Mapper.Map<LgProtocolViewModel>);
}
return PartialView("Protocol/_LgProtocol", viewModels);
}
/// <summary>
/// Downloads the protocol with the given id as a pdf-file or returns the user
/// to the view with the table of info about meeting protocols if something went wrong.
/// </summary>
/// <param name="id">The id of the meeting protocol-file to download.</param>
/// <returns>redirects the user to the table with info about meeting protcols
/// if something went wrong, otherwise returns a file-download-prompt.</returns>
/// <exception cref="ArgumentException">Thrown if the method is called without an id.</exception>
public ActionResult DownloadFile(int? id)
{
//if no id is provided, an exception is thrown.
if (!id.HasValue)
{
throw new ArgumentException("id must be provided!");
}
LgProtocolModel model;
//Fetches info about the meeting protocol based on its id from the database .
using (IProtocolRepository repository = new ProtocolRepository())
{
model = repository.GetLgProtocolById(id.Value);
}
//Gets the original file name from the model with info fetched from the database
string fileName = model.Name + ".pdf";
//Gets the path to the file on the server.
string filePath = Server.MapPath("~/App_Data/LgProtocols") + "/" + model.NameOnServer;
try
{
//Loads the file i´nto memory.
byte[] fileData = System.IO.File.ReadAllBytes(filePath);
//Gets the extension of the file based on the mimetype.
string contentType = MimeMapping.GetMimeMapping(".pdf");
/*Creates a contentdisposition header and appends it to the http-response.
It is needed for a download prompt to be generated.*/
var contentDisposition = new ContentDisposition
{
FileName = fileName,
Inline = false
};
Response.AppendHeader("Content-Disposition", contentDisposition.ToString());
return File(fileData, contentType);
}
catch
{
//if an error occured return teh user tot he view with the table of info abóut meeting protocols.
return RedirectToAction("Index");
}
}
public ActionResult UploadFile(LgProtocolFileViewModel viewModel)
{
HttpPostedFileBase file = viewModel.File;
//checks if the file contains anything.
if (file.ContentLength > 0)
{
string md5Hash;
using (var md5 = MD5.Create())
{
//Converts the md5hash to a string without "-".
md5Hash = BitConverter.ToString(md5.ComputeHash(file.InputStream)).Replace("-", "").ToLower();
}
var uploadDate = DateTime.Now;
//Creates the name by concatenating the md5hash with the current date without "-".
string nameOnServer = md5Hash + uploadDate.ToString("d").Replace("-", "");
//Converts the relative filepath to the absolute filepath.
string filePath = Path.Combine(Server.MapPath("~/App_Data/LgProtocols"), nameOnServer);
//Creates a model with info about the file that will later be saved to the database.
var model = new LgProtocolModel
{
Name = Path.GetFileNameWithoutExtension(file.FileName),
FileSize = file.ContentLength / 1024,
MD5Hash = md5Hash,
NameOnServer = nameOnServer,
UploadDate = uploadDate
};
//Saves the info to the database if it isn't uploaded allready.
if (!System.IO.File.Exists(filePath))
{
using (IProtocolRepository repository = new ProtocolRepository())
{
repository.AddLgProtocol(model);
repository.Save();
}
//Saves the file to the server.
file.SaveAs(filePath);
}
return Json(new { success = true }, JsonRequestBehavior.AllowGet);
}
//if the file was empty an error is returned.
return Json(new { ErrorMessage = "File was empty" }, JsonRequestBehavior.AllowGet);
}
