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#ifndef _nsMsgFolderCompactor_h
#define _nsMsgFolderCompactor_h

#include "nsCOMPtr.h"
#include "nsXPIDLString.h"
#include "nsIMsgFolder.h"	 
#include "nsIStreamListener.h"
#include "nsIMsgFolderCompactor.h"
#include "nsICopyMsgStreamListener.h"
#include "nsIMsgWindow.h"
#include "nsIStringBundle.h"
#include "nsIMsgMessageService.h"

class nsFolderCompactState : public nsIMsgFolderCompactor, public nsIStreamListener, public nsICopyMessageStreamListener, public nsIUrlListener
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIREQUESTOBSERVER
  NS_DECL_NSISTREAMLISTENER
  NS_DECL_NSICOPYMESSAGESTREAMLISTENER
  NS_DECL_NSIURLLISTENER
  NS_DECL_NSIMSGFOLDERCOMPACTOR

  nsFolderCompactState(void);
  virtual ~nsFolderCompactState(void);
//  virtual nsresult Init(nsIMsgFolder *folder, const char *baseMsgUri, nsIMsgDatabase *db,
//                           nsIFileSpec *pathSpec);
  // virtual nsresult FinishCompact();
protected:
  virtual nsresult InitDB(nsIMsgDatabase *db);
  virtual nsresult StartCompacting();
  virtual nsresult FinishCompact();
  void CloseOutputStream();
  void  CleanupTempFilesAfterError();

  nsresult Init(nsIMsgFolder *aFolder, const char* aBaseMsgUri, nsIMsgDatabase *aDb,
                            nsIFileSpec *aPathSpec, nsIMsgWindow *aMsgWindow);
  nsresult GetMessage(nsIMsgDBHdr **message);
  nsresult BuildMessageURI(const char *baseURI, PRUint32 key, nsCString& uri);  
  nsresult ShowStatusMsg(const PRUnichar *aMsg);
  nsresult ReleaseFolderLock();
  void     ShowCompactingStatusMsg();
  nsresult CompactNextFolder();
  

  nsCString m_baseMessageUri; // base message uri
  nsCString m_messageUri; // current message uri being copy
  nsCOMPtr<nsIMsgFolder> m_folder; // current folder being compact
  nsCOMPtr<nsIMsgDatabase> m_db; // new database for the compact folder
  nsFileSpec m_fileSpec; // new mailbox for the compact folder
  nsOutputFileStream *m_fileStream; // output file stream for writing
  nsMsgKeyArray m_keyArray; // all message keys need to be copied over
  PRInt32 m_size; // size of the message key array
  PRInt32 m_curIndex; // index of the current copied message key in key array
  nsMsgKey m_startOfNewMsg; // offset in mailbox of new message
  char m_dataBuffer[4096 + 1]; // temp data buffer for copying message
  nsresult m_status; // the status of the copying operation
  nsCOMPtr <nsIMsgMessageService> m_messageService; // message service for copying 
  nsCOMPtr<nsISupportsArray> m_folderArray; // to store all the folders in case of compact all
  nsCOMPtr <nsIMsgWindow> m_window;
  nsCOMPtr <nsIMsgDBHdr> m_curSrcHdr;
  PRUint32 m_folderIndex; // tells which folder to compact in case of compact all
  PRBool m_compactAll;  //flag for compact all
  PRBool m_compactOfflineAlso; //whether to compact offline also
  PRBool m_compactingOfflineFolders; // are we in the offline folder compact phase
  PRBool m_parsingFolder; //flag for parsing local folders;
  // these members are used to add missing status lines to compacted messages.
  PRBool m_needStatusLine;
  PRBool m_startOfMsg;
  PRInt32 m_statusOffset;
  PRInt32 m_statusLineSize;
  nsCOMPtr <nsISupportsArray> m_offlineFolderArray;

};

class nsOfflineStoreCompactState : public nsFolderCompactState
{
public:

  nsOfflineStoreCompactState(void);
  virtual ~nsOfflineStoreCompactState(void);
  NS_IMETHOD OnStopRequest(nsIRequest *request, nsISupports *ctxt,
                                    nsresult status);

protected:
    virtual nsresult InitDB(nsIMsgDatabase *db);
    virtual nsresult StartCompacting();
    virtual nsresult FinishCompact();

};



#endif