// Executes GET requsts for all files
private static ActionResult GetHandler(IFileHandler handler)
{
IFileStatus status = new FileStatus();
using (FilesModel db = new FilesModel())
{
foreach (var row in db.Files)
{
string url = handler.Context.Request.Url.OriginalString + "?fileName=" + row.Id.ToString();
IFileStatusItem file = new FileStatusItem()
{
ContentType = row.Type,
DeleteType = "DELETE",
FileName = row.Name,
FileSize = row.Size,
OriginalName = row.Original,
Progress = "100",
Success = true,
ThumbnailUrl = row.Preview,
// Set an identifier for GET and DELETE requests
DeleteUrl = url,
FileUrl = url
};
status.Files.Add(file);
}
}
handler.FileStatus = status;
// Create client plugin specific result and return an ActionResult
IBackloadResult result = handler.Services.Core.CreatePluginResult();
return ResultCreator.Create((IFileStatusResult)result);
}
// Executes DELETE requsts
private async Task<ActionResult> DeleteHandler(IFileHandler handler)
{
// Get the file to delete
handler.FileStatus = handler.Services.DELETE.GetRequestStatus();
IFileStatusItem file = handler.FileStatus.Files[0];
using (FilesModel db = new FilesModel())
{
Guid id = Guid.Parse(file.FileName);
File f = db.Files.Find(id);
db.Files.Remove(f);
await db.SaveChangesAsync();
}
// Create client plugin specific result and return an ActionResult
IBackloadResult result = handler.Services.Core.CreatePluginResult();
return ResultCreator.Create((IFileStatusResult)result);
}
// Executes POST requsts
private async Task<ActionResult> PostHandler(IFileHandler handler)
{
// Get the posted file with meta data from the request
handler.FileStatus = await handler.Services.POST.GetPostedFiles();
if (handler.FileStatus != null)
{
Guid id = Guid.NewGuid();
IFileStatusItem file = handler.FileStatus.Files[0];
// Read the file data (bytes)
byte[] data = null;
using (System.IO.MemoryStream stream = new System.IO.MemoryStream((int)file.FileSize))
{
await file.FileStream.CopyToAsync(stream);
data = stream.ToArray();
}
// Create the thumbnail
await handler.Services.POST.CreateThumbnail(file);
// Create a base64 encoded data url for the thumbnail we can return in Json
await handler.Services.Core.CreateThumbnailDataUrls();
// This will change the url query parameter fileName to the id of the
// new table row, so we can identify the file in a DELETE and GET request
file.FileUrl = file.DeleteUrl.Replace(file.FileName, id.ToString());
file.DeleteUrl = file.FileUrl;
// Store to db
using (FilesModel db = new FilesModel())
{
// File entity represents a table row
File row = new File()
{
Id = id,
Data = data,
Name = file.FileName,
Original = file.OriginalName,
Size = file.FileSize,
Type = file.ContentType,
UploadTime = DateTime.Now,
Preview = file.ThumbnailUrl
};
File f = db.Files.Add(row);
await db.SaveChangesAsync();
};
}
// Create client plugin specific result and return an ActionResult
IBackloadResult result = handler.Services.Core.CreatePluginResult();
return ResultCreator.Create((IFileStatusResult)result);
}
// Executes GET requsts for a specific file (e.g. user has clicked on a preview)
private static ActionResult GetFileHandler(IFileHandler handler)
{
// Get the requested file name
string fileName = handler.RequestValues.BackloadValues.FileName;
Guid id = Guid.Parse(fileName);
string contentType = string.Empty;
byte[] data = null;
using (FilesModel db = new FilesModel())
{
File row = db.Files.Find(id);
contentType = row.Type;
data = row.Data;
}
// return the raw file data (bytes)
return new FileContentResult(data, contentType);
}