public void createFolder(string FolderName, int? InFolderID)
{
PAWAContext db = new PAWAContext();
if (FolderName == null)
{
FolderName = "Folder";
}
if (InFolderID == -1)
{
InFolderID = null;
}
var newFolder = new PAWA.Models.Folder
{
CreateDateTime = System.DateTime.Now,
FolderName = FolderName,
InFolderID = InFolderID,
UserID = WebSecurity.CurrentUserId,
//FolderID auto?
};
db.Folders.Add(newFolder);
db.SaveChanges();
}
public int deleteFolderChain(Folder DeleteMe)
{
PAWAContext db = new PAWAContext();
AlbumGrid toolbelt = new AlbumGrid(dbContext);
IEnumerable<Folder> listOfInternalFolders = toolbelt.GetFolders(DeleteMe.FolderID);
IEnumerable<PAWA.Models.File> listOfInternalFiles = toolbelt.GetFiles(DeleteMe.FolderID);
int nFolderDel = 0;
int lengthOfInternalFolders;
if (listOfInternalFolders.Count() > 0)
{
lengthOfInternalFolders = listOfInternalFolders.Count();
}
else
{
lengthOfInternalFolders = 0;
}
for (int i = 0; i < lengthOfInternalFolders; i++)
{
Folder delFolder = listOfInternalFolders.ElementAt(0);
nFolderDel += deleteFolderChain(delFolder);
}
deleteMultipleFiles(listOfInternalFiles);
dbContext.Folders.Remove(DeleteMe);
dbContext.SaveChanges();
return nFolderDel;
}
public ActionResult Create(string FolderName, int InFolderID)
{
Folder newFolder = new Folder();
newFolder.UserID = WebSecurity.CurrentUserId;
newFolder.FolderName = FolderName;
newFolder.InFolderID = InFolderID;
newFolder.CreateDateTime = DateTime.Now;
return PartialView();
}
public Folder Add(Folder item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
item.FolderID = _nextId++;
item.CreateDateTime = DateTime.Now;
folders.Add(item);
return item;
}
public bool Update(Folder item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
int index = folders.FindIndex(p => p.FolderID == item.FolderID);
if (index == -1)
{
return false;
}
folders.RemoveAt(index);
folders.Add(item);
return true;
}
/// <summary>
/// Returns 1 if the subfolder is within the directory tree of the parent folder. Returns 0 if root folder . If the subfolder is in a nonconventional loop(root folder is missing), the return is -1.
/// </summary>
/// <param name="subfolder">Folder that is presumed to be a child of the parent folder</param>
/// <param name="parentFolder">folder that is persumed to contain the sub folder</param>
/// <returns></returns>
public int isSubfolder(Folder subfolder, Folder parentFolder)
{
int _RootID = 0;
if (subfolder.FolderID == _RootID) { return _RootID; }
int returnValue = -1;
if (subfolder != null && parentFolder != null && parentFolder.UserID == subfolder.UserID)
{
//Folder subsParent? = getFolder(subfolder.UserID, subfolder.InFolderID);
Folder testSubFolder = getFolder(subfolder.UserID, subfolder.FolderID);
Folder testParentFolder = getFolder(parentFolder.UserID, parentFolder.FolderID);
bool hasNotReachedRoot = true;
//int inIndex = Convert.ToInt32(destinationFolder);
if (findInfinateParentLoop(subfolder) == -1)
{
while ((hasNotReachedRoot = (testSubFolder.FolderID != _RootID)) && (testSubFolder.FolderID != testParentFolder.FolderID))
{
testSubFolder = getFolder(testSubFolder.UserID, testSubFolder.InFolderID);
}
if (hasNotReachedRoot) { returnValue = 1; } else { returnValue = 0; }
}
else { returnValue = -1; }
}
return returnValue;
}
///<summary>
/// Returns the specific Folder, given the
/// Folder ID and the User ID.
///</summary>
/// <param name="userID">ID of the user to witch the folder pertains.</param>
/// <param name="folderID">ID of the folder that is being fetched.</param>
/// <returns>Returns the requested folder. </returns>
public PAWA.Models.Folder getFolder(int userID, int? folderID)
{
//open db connection
//db = new PAWAContext();
/// WARNING !!!
/// IF db has Zero index, change conditional from "<=" to "<"
if (userID <= 0) { userID = 1; } // Assumption handle: User id is always greater then zero
if (folderID <= 0) { folderID = null; } // No folder less then zero (considered null)
var folders = from f in db.Folders where (f.FolderID == folderID || (f.FolderID == null && folderID == null)) && f.UserID == userID select f;
Folder returnFolder;
if (folders.Count() > 0) { returnFolder = folders.FirstOrDefault(); } else { returnFolder = new Folder(); }
return returnFolder;
}
public int findInfinateParentLoop(Folder testFolderIn)
{
int _RootID = 0;
bool hasNotReachedRoot = true;
int i = -1;
if (testFolderIn != null)
{
Folder testFolder = getFolder(testFolderIn.UserID, testFolderIn.FolderID);
//int inIndex = Convert.ToInt32(destinationFolder);
IList<int> folderIDChain = new List<int> { };
while ((hasNotReachedRoot = (testFolder.FolderID != _RootID)) && i <= 0)
{
//check every list item in folderIDChain to see if the folder id has already been seen
int? c = folderIDChain.Count;
bool noLoopDetected = true;
for (i = (int)c; i > 1 && (noLoopDetected = folderIDChain.ElementAt(i - 1) != testFolder.FolderID); i--) { }
if (noLoopDetected == false) { return folderIDChain.ElementAt((int)c - 1); }
folderIDChain.Add(testFolder.FolderID);
testFolder = getFolder(testFolder.UserID, testFolder.InFolderID);
}
}
return -1;
}
