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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef _nsImapOfflineSync_H_
#define _nsImapOfflineSync_H_

#include "mozilla/Attributes.h"
#include "nsIMsgDatabase.h"
#include "nsIUrlListener.h"
#include "nsIMsgOfflineImapOperation.h"
#include "nsIMsgWindow.h"
#include "nsIMsgFolder.h"
#include "nsCOMArray.h"
#include "nsIDBChangeListener.h"
#include "nsIImapOfflineSync.h"

class nsImapOfflineSync : public nsIUrlListener,
                          public nsIMsgCopyServiceListener,
                          public nsIDBChangeListener,
                          public nsIImapOfflineSync {
 public:  // set to one folder to playback one folder only
  nsImapOfflineSync();

  NS_DECL_ISUPPORTS
  NS_DECL_NSIURLLISTENER
  NS_DECL_NSIMSGCOPYSERVICELISTENER
  NS_DECL_NSIDBCHANGELISTENER
  NS_DECL_NSIIMAPOFFLINESYNC

  int32_t GetCurrentUIDValidity();
  void SetCurrentUIDValidity(int32_t uidvalidity) {
    mCurrentUIDValidity = uidvalidity;
  }

  void SetPseudoOffline(bool pseudoOffline) { m_pseudoOffline = pseudoOffline; }
  bool ProcessingStaleFolderUpdate() {
    return m_singleFolderToUpdate != nullptr;
  }

  bool CreateOfflineFolder(nsIMsgFolder* folder);
  void SetWindow(nsIMsgWindow* window);

 protected:
  virtual ~nsImapOfflineSync();

  bool CreateOfflineFolders();
  bool DestFolderOnSameServer(nsIMsgFolder* destFolder);
  bool AdvanceToNextServer();
  bool AdvanceToNextFolder();
  void AdvanceToFirstIMAPFolder();
  void DeleteAllOfflineOpsForCurrentDB();
  void ClearCurrentOps();
  // Clears m_currentDB, and unregister listener.
  void ClearDB();
  void ProcessFlagOperation(nsIMsgOfflineImapOperation* currentOp);
  void ProcessKeywordOperation(nsIMsgOfflineImapOperation* op);
  void ProcessMoveOperation(nsIMsgOfflineImapOperation* currentOp);
  void ProcessCopyOperation(nsIMsgOfflineImapOperation* currentOp);
  void ProcessEmptyTrash();
  void ProcessAppendMsgOperation(nsIMsgOfflineImapOperation* currentOp,
                                 nsOfflineImapOperationType opType);

  nsCOMPtr<nsIMsgFolder> m_currentFolder;
  nsCOMPtr<nsIMsgFolder> m_singleFolderToUpdate;
  nsCOMPtr<nsIMsgWindow> m_window;
  nsTArray<RefPtr<nsIMsgIncomingServer>> m_allServers;
  nsCOMPtr<nsIMsgIncomingServer> m_currentServer;
  // Folders left to consider on m_currentServer.
  nsTArray<RefPtr<nsIMsgFolder>> m_folderQueue;

  nsCOMPtr<nsIFile> m_curTempFile;

  nsTArray<nsMsgKey> m_CurrentKeys;
  nsCOMArray<nsIMsgOfflineImapOperation> m_currentOpsToClear;
  uint32_t m_KeyIndex;
  nsCOMPtr<nsIMsgOfflineOpsDatabase> m_currentDB;
  nsCOMPtr<nsIUrlListener> m_listener;
  int32_t mCurrentUIDValidity;
  int32_t mCurrentPlaybackOpType;  // kFlagsChanged -> kMsgCopy -> kMsgMoved
  bool m_mailboxupdatesStarted;
  bool m_mailboxupdatesFinished;
  bool m_pseudoOffline;  // for queueing online events in offline db
  bool m_createdOfflineFolders;
};

class nsImapOfflineDownloader : public nsImapOfflineSync {
 public:
  nsImapOfflineDownloader(nsIMsgWindow* window, nsIUrlListener* listener);
  virtual ~nsImapOfflineDownloader();
  NS_IMETHOD ProcessNextOperation() override;  // this kicks off download
};

#endif