/// <summary>
/// Deletes a sub-folder under this folder. All messages contained in this folder will be deleted.
/// </summary>
/// <param name="name">Name of folder to delete</param>
public void DeleteFolder(string name)
{
if (_client.OfflineMode)
{
_client.Log(IMAPBase.LogTypeEnum.WARN, "Cannot delete folders in offline mode.");
return;
}
string cmd = "DELETE \"{0}\"\r\n";
IMAPFolder folderToDelete = null;
foreach (IMAPFolder f in _subFolders)
{
if (f.FolderName.Equals(name))
{
folderToDelete = f;
break;
}
}
if (folderToDelete != null)
{
ArrayList result = new ArrayList();
_client._imap.SendAndReceive(String.Format(cmd, folderToDelete.FolderPath), ref result);
if (result[0].ToString().Contains("OK"))
{
// TODO: check if this folder is selected. if so, select its parent instead
_subFolders.Remove(folderToDelete);
_client.UpdateCache(true);
}
}
}
/// <summary>
/// Synchronizes the local cache with the server
/// </summary>
public void SyncCache()
{
if (this.OfflineMode)
{
return;
}
if (!this.UsingCache)
{
return;
}
// to synchronize the cache without having to download everything all over again,
// we first get the folder list from the server. We then look at each folder in the server list
// and see if it already exists in the client list. if it does not, we add it and pull
// the message UIDs for it.
// then we check the client list and see if all of those folders are still on the server
// if not, the folder on the client side is removed, all with all of its messages
// keep track of newly added folders so their contents can be downloaded.
// next we iterate through all the existing folders and check for any new messages.
// this is accomplished by simply calling the GetMessageIDs method on the folder. this will
// update the folder with any UIDs that dont already exist.
// the messages content will be loaded automatically when it is serialized.
Log(IMAPBase.LogTypeEnum.INFO, "Synching Cache...");
IMAPFolderCollection serverFolderList = _imap.RawFolderList;
IMAPFolderCollection clientFolderList = FlattenFolderList(_folders);
IMAPFolderCollection newFolderList = new IMAPFolderCollection();
IMAPFolderCollection oldFolderList = new IMAPFolderCollection();
foreach (IMAPFolder f in serverFolderList)
{
bool found = false;
foreach (IMAPFolder cf in clientFolderList)
{
if (cf.FolderPath.Equals(f.FolderPath))
{
found = true;
}
}
if (!found)
{
newFolderList.Add(f);
}
}
foreach (IMAPFolder f in clientFolderList)
{
bool found = false;
foreach (IMAPFolder sf in serverFolderList)
{
if (sf.FolderPath.Equals(f.FolderPath))
{
found = true;
}
}
if (!found)
{
oldFolderList.Add(f);
}
}
if (oldFolderList.Count > 0)
{
Log(IMAPBase.LogTypeEnum.INFO, String.Format("{0} old folders found", newFolderList.Count));
foreach (IMAPFolder f in oldFolderList)
{
IMAPFolder temp = null;
FindFolder(f.FolderPath, ref _folders, ref temp);
if (temp != null)
{
if (temp.ParentFolder == null)
{
_folders.Remove(temp);
}
else
{
temp.ParentFolder.SubFolders.Remove(temp);
}
}
}
}
if (newFolderList.Count > 0)
{
Log(IMAPBase.LogTypeEnum.INFO, String.Format("{0} new folders found", newFolderList.Count));
// now we need to put these new folders into the proper locations in the tree.
foreach (IMAPFolder f in newFolderList)
{
f.GetMessageIDs(false);
foreach (IMAPFolder sf in serverFolderList)
{
if (sf.FolderName.Equals(f.ParentFolderName))
{
f.ParentFolder = sf;
break;
}
}
// if the new folder has no parent assigned to it then we just add it to the root folders
if (f.ParentFolderName == String.Empty)
{
_folders.Add(f);
}
else
{
// otherwise we just loop through the flat list we created
// and find the folder that is the parent of the current new folder
// we then add the new folder to the sub folders of its parent
foreach (IMAPFolder cf in clientFolderList)
{
if (cf.FolderPath.Equals(f.ParentFolder.FolderPath))
{
cf.SubFolders.Add(f);
f.ParentFolder = cf;
break;
}
}
}
}
}
foreach (IMAPFolder f in clientFolderList)
{
// this will get the UIDs of any new messages that have been added to the folder on the server
f.GetMessageIDs(false);
}
UpdateCache(false);
Log(IMAPBase.LogTypeEnum.INFO, "Cache Synchronization Complete");
}