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/**
   Interface for representing Local Mail folders.
*/

#ifndef nsMsgLocalMailFolder_h__
#define nsMsgLocalMailFolder_h__

#include "nsMsgDBFolder.h" /* include the interface we are going to support */
#include "nsAutoPtr.h"
#include "nsICopyMessageListener.h"
#include "nsIFileStreams.h"
#include "nsIPop3IncomingServer.h"  // need this for an interface ID
#include "nsMsgTxn.h"
#include "nsIMsgMessageService.h"
#include "nsIMsgParseMailMsgState.h"
#include "nsITransactionManager.h"
#include "nsIMsgLocalMailFolder.h"
#include "nsIMsgFilterPlugin.h"
#include "nsISeekableStream.h"
#include "nsIMutableArray.h"

#define COPY_BUFFER_SIZE 16384

struct nsLocalMailCopyState
{
  nsLocalMailCopyState();
  virtual ~nsLocalMailCopyState();
  
  nsCOMPtr <nsIOutputStream> m_fileStream;
  nsCOMPtr<nsISupports> m_srcSupport;
  nsCOMPtr<nsIArray> m_messages;
  nsRefPtr<nsMsgTxn> m_undoMsgTxn;
  nsCOMPtr<nsIMsgDBHdr> m_message; // current copy message
  nsCOMPtr<nsIMsgParseMailMsgState> m_parseMsgState;
  nsCOMPtr<nsIMsgCopyServiceListener> m_listener;
  nsCOMPtr<nsIMsgWindow> m_msgWindow;
  nsCOMPtr<nsIMsgDatabase> m_destDB;

  // for displaying status;
  nsCOMPtr <nsIMsgStatusFeedback> m_statusFeedback;
  nsCOMPtr <nsIStringBundle> m_stringBundle;
  PRInt64 m_lastProgressTime;

  nsMsgKey m_curDstKey;
  PRUint32 m_curCopyIndex;
  nsCOMPtr <nsIMsgMessageService> m_messageService;
  PRUint32 m_totalMsgCount;
  char *m_dataBuffer;
  PRUint32 m_dataBufferSize;
  PRUint32 m_leftOver;
  PRPackedBool m_isMove;
  PRPackedBool m_isFolder;   // isFolder move/copy
  PRPackedBool m_dummyEnvelopeNeeded;
  PRPackedBool m_copyingMultipleMessages;
  PRPackedBool m_fromLineSeen;
  PRPackedBool m_allowUndo;
  PRPackedBool m_writeFailed;
  PRPackedBool m_notifyFolderLoaded;
};

struct nsLocalFolderScanState
{
  nsLocalFolderScanState();
  ~nsLocalFolderScanState();

  nsCOMPtr<nsILocalFile> m_localFile;
  nsCOMPtr<nsIFileInputStream> m_fileStream;
  nsCOMPtr<nsIInputStream> m_inputStream;
  nsCOMPtr<nsISeekableStream> m_seekableStream;
  nsCOMPtr<nsILineInputStream> m_fileLineStream;
  nsCString m_header;
  nsCString m_accountKey;
  const char *m_uidl; // memory is owned by m_header
};

class nsMsgLocalMailFolder : public nsMsgDBFolder,
                             public nsIMsgLocalMailFolder,
                             public nsICopyMessageListener,
                             public nsIJunkMailClassificationListener
{
public:
  nsMsgLocalMailFolder(void);
  virtual ~nsMsgLocalMailFolder(void);
  NS_DECL_NSICOPYMESSAGELISTENER
  NS_DECL_NSIMSGLOCALMAILFOLDER
  NS_DECL_NSIJUNKMAILCLASSIFICATIONLISTENER
  NS_DECL_ISUPPORTS_INHERITED
  // nsIRDFResource methods:
  NS_IMETHOD Init(const char *aURI);

  // nsIUrlListener methods
  NS_IMETHOD OnStartRunningUrl(nsIURI * aUrl);
  NS_IMETHOD OnStopRunningUrl(nsIURI * aUrl, nsresult aExitCode);

  // nsIMsgFolder methods:
  NS_IMETHOD GetSubFolders(nsISimpleEnumerator* *aResult);
  NS_IMETHOD GetMsgDatabase(nsIMsgWindow *aMsgWindow,
                              nsIMsgDatabase** aMsgDatabase);

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

  NS_IMETHOD CreateSubfolder(const nsAString& folderName ,nsIMsgWindow *msgWindow);
  NS_IMETHOD AddSubfolder(const nsAString& folderName, nsIMsgFolder** newFolder);

  NS_IMETHOD Compact(nsIUrlListener *aListener, nsIMsgWindow *aMsgWindow);
  NS_IMETHOD CompactAll(nsIUrlListener *aListener, nsIMsgWindow *aMsgWindow, nsISupportsArray *aFolderArray, PRBool aCompactOfflineAlso, nsISupportsArray *aOfflineFolderArray);
  NS_IMETHOD EmptyTrash(nsIMsgWindow *msgWindow, nsIUrlListener *aListener);
  NS_IMETHOD Delete ();
  NS_IMETHOD DeleteSubFolders(nsIArray *folders, nsIMsgWindow *msgWindow);
  NS_IMETHOD CreateStorageIfMissing(nsIUrlListener* urlListener);
  NS_IMETHOD Rename (const nsAString& aNewName, nsIMsgWindow *msgWindow);
  NS_IMETHOD RenameSubFolders (nsIMsgWindow *msgWindow, nsIMsgFolder *oldFolder);

  NS_IMETHOD GetPrettyName(nsAString& prettyName); // Override of the base, for top-level mail folder
  NS_IMETHOD SetPrettyName(const nsAString& aName);

  NS_IMETHOD GetFolderURL(nsACString& url);

  NS_IMETHOD  GetManyHeadersToDownload(PRBool *retval);

  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(nsIArray *messages, 
                      nsIMsgWindow *msgWindow, PRBool
                      deleteStorage, PRBool isMove,
                      nsIMsgCopyServiceListener* listener, PRBool allowUndo);
  NS_IMETHOD CopyMessages(nsIMsgFolder *srcFolder, nsIArray* messages,
                          PRBool isMove, nsIMsgWindow *msgWindow,
                          nsIMsgCopyServiceListener* listener, PRBool isFolder, PRBool allowUndo);
  NS_IMETHOD CopyFolder(nsIMsgFolder *srcFolder, PRBool isMoveFolder, nsIMsgWindow *msgWindow,
                          nsIMsgCopyServiceListener* listener);
  NS_IMETHOD CopyFileMessage(nsIFile* aFile, nsIMsgDBHdr* msgToReplace,
                             PRBool isDraftOrTemplate, 
                             PRUint32 newMsgFlags,
                             nsIMsgWindow *msgWindow,
                             nsIMsgCopyServiceListener* listener);
  NS_IMETHOD GetNewMessages(nsIMsgWindow *aWindow, nsIUrlListener *aListener);
  NS_IMETHOD NotifyCompactCompleted();
  NS_IMETHOD Shutdown(PRBool shutdownChildren);

  NS_IMETHOD WriteToFolderCacheElem(nsIMsgFolderCacheElement *element);
  NS_IMETHOD ReadFromFolderCacheElem(nsIMsgFolderCacheElement *element);

  NS_IMETHOD GetName(nsAString& aName);

  // Used when headers_only is TRUE
  NS_IMETHOD DownloadMessagesForOffline(nsIArray *aMessages, nsIMsgWindow *aWindow);
  NS_IMETHOD FetchMsgPreviewText(nsMsgKey *aKeysToFetch, PRUint32 aNumKeys,
                                                 PRBool aLocalOnly, nsIUrlListener *aUrlListener, 
                                                 PRBool *aAsyncResults);
  NS_IMETHOD AddKeywordsToMessages(nsIArray *aMessages, const nsACString& aKeywords);
  NS_IMETHOD RemoveKeywordsFromMessages(nsIArray *aMessages, const nsACString& aKeywords);

protected:
  nsresult CopyFolderAcrossServer(nsIMsgFolder *srcFolder, nsIMsgWindow *msgWindow,nsIMsgCopyServiceListener* listener);

  nsresult CreateSubFolders(nsIFile *path);
  nsresult GetTrashFolder(nsIMsgFolder** trashFolder);
  nsresult WriteStartOfNewMessage();
  nsresult IsChildOfTrash(PRBool *result);
  nsresult RecursiveSetDeleteIsMoveTrash(PRBool bVal);
  nsresult ConfirmFolderDeletion(nsIMsgWindow *aMsgWindow, PRBool *aResult);

  nsresult DeleteMessage(nsISupports *message, nsIMsgWindow *msgWindow,
                   PRBool deleteStorage, PRBool commit);
  nsresult GetDatabase(nsIMsgWindow *msgWindow);

  // copy message helper
  nsresult DisplayMoveCopyStatusMsg();
  nsresult SortMessagesBasedOnKey(nsTArray<nsMsgKey> &aKeyArray, nsIMsgFolder *srcFolder, nsIMutableArray* messages);

  nsresult CopyMessageTo(nsISupports *message, nsIMsgFolder *dstFolder,
                         nsIMsgWindow *msgWindow, PRBool isMove);

  // copy multiple messages at a time from this folder
  nsresult CopyMessagesTo(nsIArray *messages, nsTArray<nsMsgKey> &keyArray,
                                       nsIMsgWindow *aMsgWindow,
                                       nsIMsgFolder *dstFolder,
                                       PRBool isMove);
  virtual void GetIncomingServerType(nsCString& serverType);
  nsresult InitCopyState(nsISupports* aSupport, nsIArray* messages,
                         PRBool isMove, nsIMsgCopyServiceListener* listener, nsIMsgWindow *msgWindow, PRBool isMoveFolder, PRBool allowUndo);
  void CopyPropertiesToMsgHdr(nsIMsgDBHdr *destHdr, nsIMsgDBHdr *srcHdr);
  virtual nsresult CreateBaseMessageURI(const nsACString& aURI);
  virtual nsresult SpamFilterClassifyMessage(const char *aURI, nsIMsgWindow *aMsgWindow, nsIJunkMailPlugin *aJunkMailPlugin);
  virtual nsresult SpamFilterClassifyMessages(const char **aURIArray, PRUint32 aURICount, nsIMsgWindow *aMsgWindow, nsIJunkMailPlugin *aJunkMailPlugin);
  nsresult ChangeKeywordForMessages(nsIArray *aMessages, const nsACString& aKeyword, PRBool add);
  PRBool GetDeleteFromServerOnMove();

protected:
  nsLocalMailCopyState *mCopyState; //We only allow one of these at a time
  nsCString mType;
  PRPackedBool mHaveReadNameFromDB;
  PRPackedBool mInitialized;
  PRPackedBool mCheckForNewMessagesAfterParsing;
  PRPackedBool m_parsingFolder;
  nsCOMPtr<nsIUrlListener> mReparseListener;
  PRInt32 mNumFilterClassifyRequests;
  nsTArray<nsMsgKey> mSpamKeysToMove;
  nsCString mSpamFolderURI;
  nsresult setSubfolderFlag(const nsAString& aFolderName, PRUint32 flags);

  // state variables for DownloadMessagesForOffline

  // Do we notify the owning window of Delete's before or after
  // Adding the new msg?
#define DOWNLOAD_NOTIFY_FIRST 1
#define DOWNLOAD_NOTIFY_LAST  2

#ifndef DOWNLOAD_NOTIFY_STYLE
#define DOWNLOAD_NOTIFY_STYLE DOWNLOAD_NOTIFY_FIRST
#endif

  nsCOMPtr<nsISupportsArray> mDownloadMessages;
  nsCOMPtr<nsIMsgWindow> mDownloadWindow;
  nsMsgKey mDownloadSelectKey;
  PRUint32 mDownloadState;
#define DOWNLOAD_STATE_NONE 0
#define DOWNLOAD_STATE_INITED 1
#define DOWNLOAD_STATE_GOTMSG 2
#define DOWNLOAD_STATE_DIDSEL 3

#if DOWNLOAD_NOTIFY_STYLE == DOWNLOAD_NOTIFY_LAST
  nsMsgKey mDownloadOldKey;
  nsMsgKey mDownloadOldParent;
  PRUint32 mDownloadOldFlags;
#endif
};

#endif // nsMsgLocalMailFolder_h__