/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsMsgFolderCache_H
#define nsMsgFolderCache_H

#include "nsIMsgFolderCache.h"
#include "nsIMsgFolderCacheElement.h"
#include "nsInterfaceHashtable.h"
#include "nsCOMPtr.h"
#include "mdb.h"

class nsMsgFolderCache : public nsIMsgFolderCache
{

public:
  friend class nsMsgFolderCacheElement;

  nsMsgFolderCache();
  virtual ~nsMsgFolderCache();

  NS_DECL_ISUPPORTS
  NS_DECL_NSIMSGFOLDERCACHE

protected:
  void GetMDBFactory(nsIMdbFactory ** aMdbFactory);
  nsresult AddCacheElement(const nsACString& key, nsIMdbRow *row, nsIMsgFolderCacheElement **result);
  nsresult RowCellColumnToCharPtr(nsIMdbRow *hdrRow, mdb_token columnToken, nsACString& resultPtr);
  nsresult InitMDBInfo();
  nsresult InitNewDB();
  nsresult InitExistingDB();
  nsresult OpenMDB(const nsACString& dbName, PRBool create);
  nsIMdbEnv *GetEnv() {return m_mdbEnv;}
  nsIMdbStore *GetStore() {return m_mdbStore;}
  nsInterfaceHashtable<nsCStringHashKey, nsIMsgFolderCacheElement> m_cacheElements;
  // mdb stuff
  nsIMdbEnv           *m_mdbEnv; // to be used in all the db calls.
  nsIMdbStore         *m_mdbStore;
  nsIMdbTable         *m_mdbAllFoldersTable;
  mdb_token           m_folderRowScopeToken;
  mdb_token           m_folderTableKindToken;
  nsCOMPtr<nsIMdbFactory> mMdbFactory;

  struct mdbOid       m_allFoldersTableOID;
};

#endif
