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#ifndef nsImapUndoTxn_h__
#define nsImapUndoTxn_h__

#include "nsIMsgFolder.h"
#include "nsImapCore.h"
#include "nsIImapService.h"
#include "nsIImapIncomingServer.h"
#include "nsIUrlListener.h"
#include "nsIEventQueue.h"
#include "nsMsgTxn.h"
#include "nsMsgKeyArray.h"
#include "nsIMsgOfflineImapOperation.h"
#include "nsCOMPtr.h"
#include "nsWeakReference.h"

#define NS_IMAPMOVECOPYMSGTXN_IID \
{ /* 51c925b0-208e-11d3-abea-00805f8ac968 */ \
	0x51c925b0, 0x208e, 0x11d3, \
    { 0xab, 0xea, 0x00, 0x80, 0x5f, 0x8a, 0xc9, 0x68 } }

class nsImapMoveCopyMsgTxn : public nsMsgTxn
{
public:
  NS_DEFINE_STATIC_IID_ACCESSOR(NS_IMAPMOVECOPYMSGTXN_IID)

  nsImapMoveCopyMsgTxn();
  nsImapMoveCopyMsgTxn(nsIMsgFolder* srcFolder, nsMsgKeyArray* srcKeyArray,
                       const char* srcMsgIdString, nsIMsgFolder* dstFolder,
                       PRBool idsAreUids, PRBool isMove, 
                       nsIEventQueue *eventQueue, 
                       nsIUrlListener *urlListener);
  virtual ~nsImapMoveCopyMsgTxn();

  NS_DECL_ISUPPORTS_INHERITED 

  NS_IMETHOD UndoTransaction(void);
  NS_IMETHOD RedoTransaction(void);

  // helper
  nsresult SetCopyResponseUid(const char *msgIdString);
  nsresult GetSrcKeyArray(nsMsgKeyArray& srcKeyArray);
  nsresult AddDstKey(nsMsgKey aKey);
  nsresult UndoMailboxDelete();
  nsresult RedoMailboxDelete();
  nsresult Init(nsIMsgFolder* srcFolder, nsMsgKeyArray* srcKeyArray,
                const char* srcMsgIdString, nsIMsgFolder* dstFolder,
                PRBool idsAreUids, PRBool isMove, 
                nsIEventQueue *eventQueue, 
                nsIUrlListener *urlListener);

protected:

  nsWeakPtr m_srcFolder;
  nsCOMPtr<nsISupportsArray> m_srcHdrs;
  nsMsgKeyArray m_dupKeyArray;
  nsMsgKeyArray m_srcKeyArray;
  nsCString m_srcMsgIdString;
  nsWeakPtr m_dstFolder;
  nsCString m_dstMsgIdString;
  nsCOMPtr<nsIEventQueue> m_eventQueue;
  nsCOMPtr<nsIUrlListener> m_urlListener;
  PRBool m_idsAreUids;
  PRBool m_isMove;
  PRBool m_srcIsPop3;
  nsUInt32Array m_srcSizeArray;

  nsresult GetImapDeleteModel(nsIMsgFolder* aFolder, nsMsgImapDeleteModel *aDeleteModel);
};

class nsImapOfflineTxn : public nsImapMoveCopyMsgTxn
{
public:
  nsImapOfflineTxn(nsIMsgFolder* srcFolder, nsMsgKeyArray* srcKeyArray,
                       nsIMsgFolder* dstFolder,
                       PRBool isMove,
                       nsOfflineImapOperationType opType,
                       nsIMsgDBHdr *srcHdr,
                       nsIEventQueue *eventQueue, 
                       nsIUrlListener *urlListener);
  virtual ~nsImapOfflineTxn();

  NS_IMETHOD UndoTransaction(void);
  NS_IMETHOD RedoTransaction(void);
  void SetAddFlags(PRBool addFlags) {m_addFlags = addFlags;}
  void SetFlags(PRUint32 flags) {m_flags = flags;}
protected:
  nsOfflineImapOperationType m_opType;
  nsCOMPtr <nsIMsgDBHdr> m_header;
  // these two are used to undo flag changes, which we don't currently do.
  PRBool m_addFlags;
  PRUint32 m_flags;
};


#endif