public async Task <DeleteStationImageModel> DeleteBlob(DeleteStationImageModel model)
{
var deleteStationImageModel = new DeleteStationImageModel();
if (!String.IsNullOrEmpty(model.FileName))
{
var container = BlobHelper.GetBlobContainer();
var blob = container.GetBlockBlobReference(model.FileName);
bool deleted = false;
string errorMessage = string.Empty;
using (RiverWatchEntities _db = new RiverWatchEntities())
{
var sameImageUrls = _db.StationImages
.Where(si => si.FileUrl.Equals(model.FileUrl))
.ToList();
//if there is only one file, then delete it from the blob storage.
if (sameImageUrls.Count() == 1)
{
await blob.DeleteIfExistsAsync();
}
var stationImageToDelete = _db.StationImages.Find(model.ID);
_db.StationImages.Remove(stationImageToDelete);
_db.SaveChanges();
deleted = true;
}
if (!deleted)
{
errorMessage = "Image could not be deleted. Contact an Administrator if this problem continues.";
}
deleteStationImageModel = new DeleteStationImageModel()
{
ID = model.ID,
FileName = model.FileName,
FileUrl = model.FileUrl,
Deleted = deleted,
ErrorMessage = errorMessage
};
return(deleteStationImageModel);
}
// Otherwise
deleteStationImageModel = new DeleteStationImageModel()
{
ID = model.ID,
FileName = model.FileName,
Deleted = false,
ErrorMessage = "Image could not be found. Contact an Administrator if this problem continues."
};
return(deleteStationImageModel);
}
public async Task <IHttpActionResult> DeleteStationImage(DeleteStationImageModel model)
{
try
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
bool validated = false;
HttpRequestMessage request = ControllerContext.Request; // this seems to be same as request
ValidateCredentials VC = new ValidateCredentials();
validated = VC.checkCreds(request);
if (!validated)
{
return(Unauthorized());
}
if (model.ID <= 0)
{
return(BadRequest());
}
// Call service to perform delete, then check result to return as content
var deleteStationImageModel = await _service.DeleteBlob(model);
if (deleteStationImageModel != null)
{
if (deleteStationImageModel.Deleted)
{
return(Ok(deleteStationImageModel));
}
else
{
return(BadRequest(deleteStationImageModel.ErrorMessage));
}
}
// Otherwise
return(BadRequest());
}
catch (Exception ex)
{
HandleErrors(ex, "StationImageController_DeleteStationImage", "", "");
return(InternalServerError(ex));
}
}
