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/* ***** 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) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Seth Spitzer <sspitzer@netscape.com>
 *
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 * 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"),
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/********************************************************************************************************
 
   Interface for representing News folders.
 
*********************************************************************************************************/

#ifndef nsMsgNewsFolder_h__
#define nsMsgNewsFolder_h__

#include "nsMsgDBFolder.h" 
#include "nsFileSpec.h"
#include "nsFileStream.h"
#include "nsINntpIncomingServer.h" // need this for the IID
#include "nsNewsUtils.h"
#include "nsMsgLineBuffer.h"
#include "nsMsgKeySet.h"
#include "nsIMsgNewsFolder.h"
#include "nsCOMPtr.h"
#include "nsIMsgFilterService.h"

class nsMsgNewsFolder : public nsMsgDBFolder, public nsIMsgNewsFolder, public nsMsgLineBuffer
{
public:
  nsMsgNewsFolder(void);
  virtual ~nsMsgNewsFolder(void);

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_NSIMSGNEWSFOLDER
  // nsICollection methods:
  NS_IMETHOD Enumerate(nsIEnumerator* *result);

  // nsIUrlListener method
  NS_IMETHOD OnStopRunningUrl(nsIURI * aUrl, nsresult aExitCode);
  // nsIMsgFolder methods:
  NS_IMETHOD GetSubFolders(nsIEnumerator* *result);

  NS_IMETHOD GetMessages(nsIMsgWindow *aMsgWindow, nsISimpleEnumerator* *result);
  NS_IMETHOD UpdateFolder(nsIMsgWindow *aWindow);

  NS_IMETHOD CreateSubfolder(const PRUnichar *folderName,nsIMsgWindow *msgWindow);

  NS_IMETHOD Delete ();
  NS_IMETHOD Rename (const PRUnichar *newName, nsIMsgWindow *msgWindow);

  NS_IMETHOD GetAbbreviatedName(PRUnichar * *aAbbreviatedName);

  NS_IMETHOD GetFolderURL(char **url);

  NS_IMETHOD UpdateSummaryTotals(PRBool force) ;

  NS_IMETHOD GetExpungedBytesCount(PRUint32 *count);
  NS_IMETHOD GetDeletable (PRBool *deletable); 
  NS_IMETHOD GetRequiresCleanup(PRBool *requiresCleanup);

  NS_IMETHOD GetSizeOnDisk(PRUint32 *size);

  NS_IMETHOD GetDBFolderInfoAndDB(nsIDBFolderInfo **folderInfo, nsIMsgDatabase **db);

  NS_IMETHOD DeleteMessages(nsISupportsArray *messages, 
                      nsIMsgWindow *msgWindow, PRBool deleteStorage, PRBool isMove,
                      nsIMsgCopyServiceListener* listener, PRBool allowUndo);
  NS_IMETHOD GetNewMessages(nsIMsgWindow *aWindow, nsIUrlListener *aListener);

  NS_IMETHOD GetCanSubscribe(PRBool *aResult);
  NS_IMETHOD GetCanFileMessages(PRBool *aResult);
  NS_IMETHOD GetCanDeleteMessages(PRBool *aCanDeleteMessages);
  NS_IMETHOD GetCanCreateSubfolders(PRBool *aResult);
  NS_IMETHOD GetCanRename(PRBool *aResult);
  NS_IMETHOD GetCanCompact(PRBool *aResult);
  NS_IMETHOD OnReadChanged(nsIDBChangeListener * aInstigator);

  NS_IMETHOD DownloadMessagesForOffline(nsISupportsArray *messages, nsIMsgWindow *window);
  NS_IMETHOD Compact(nsIUrlListener *aListener, nsIMsgWindow *aMsgWindow);
  NS_IMETHOD DownloadAllForOffline(nsIUrlListener *listener, nsIMsgWindow *msgWindow);
  NS_IMETHOD GetSortOrder(PRInt32 *order);
  NS_IMETHOD SetSortOrder(PRInt32 order);

  NS_IMETHOD GetPersistElided(PRBool *aPersistElided);

  NS_IMETHOD Shutdown(PRBool shutdownChildren);
  
  NS_IMETHOD GetFilterList(nsIMsgWindow *aMsgWindow, nsIMsgFilterList **aFilterList);
  NS_IMETHOD SetFilterList(nsIMsgFilterList *aFilterList);
  NS_IMETHOD ApplyRetentionSettings();

  // for nsMsgLineBuffer
  virtual PRInt32 HandleLine(char *line, PRUint32 line_size);

protected:
  // helper routine to parse the URI and update member variables
  nsresult AbbreviatePrettyName(PRUnichar ** prettyName, PRInt32 fullwords);
  nsresult ParseFolder(nsFileSpec& path);
  nsresult CreateSubFolders(nsFileSpec &path);
  nsresult AddDirectorySeparator(nsFileSpec &path);
  nsresult GetDatabase(nsIMsgWindow *aMsgWindow);

  nsresult LoadNewsrcFileAndCreateNewsgroups();
  PRInt32 RememberLine(const char *line);
  nsresult RememberUnsubscribedGroup(const char *newsgroup, const char *setStr);
  nsresult ForgetLine(void);
  nsresult GetNewsMessages(nsIMsgWindow *aMsgWindow, PRBool getOld, nsIUrlListener *aListener);

  PRInt32 HandleNewsrcLine(char *line, PRUint32 line_size);
  virtual const char *GetIncomingServerType() {return "nntp";}
  virtual nsresult CreateBaseMessageURI(const char *aURI);

  nsByteArray		m_newsrcInputStream;

protected:
  PRUint32  mExpungedBytes;
  PRPackedBool mGettingNews;
  PRPackedBool mInitialized;
  PRPackedBool m_downloadMessageForOfflineUse;
  PRPackedBool m_downloadingMultipleMessages;

  nsCString mOptionLines;
  nsCString mUnsubscribedNewsgroupLines;
  nsMsgKeySet *mReadSet; 

  nsCOMPtr<nsIFileSpec> mNewsrcFilePath; 

  // used for auth news
  char 		*mGroupUsername;
  char		*mGroupPassword;

  nsCString mPrevUsername;
  nsCString mPrevPassword;

  // the name of the newsgroup.
  nsCString	mRawName;
  PRInt32 mSortOrder;

private:
    nsresult CreateNewsgroupUsernameUrlForSignon(const char *inUriStr, char **result);
    nsresult CreateNewsgroupPasswordUrlForSignon(const char *inUriStr, char **result);
    nsresult CreateNewsgroupUrlForSignon(const char *inUriStr, const char *ref, char **result);

    nsCOMPtr <nsIFileSpec> mFilterFile;
    nsCOMPtr <nsIMsgFilterList> mFilterList;
};

#endif // nsMsgNewsFolder_h__