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#ifndef QMESSAGINGMAEMOHELPERPRIVATE_H
#define QMESSAGINGMAEMOHELPERPRIVATE_H

#include <qmessageglobal.h>
#include <qmessageid.h>
#include <qmessagesortorder.h>
#include <qmessageaccountid.h>
#include <qmessageaccountsortorder.h>
#include <qmessagefolderid.h>
#include <qmessagefoldersortorder.h>

QTM_BEGIN_NAMESPACE

class QMessageAccountFilter;
class QMessageAccountSortOrder;
class QMessageFolderFilter;
class QMessageFolderSortOrder;
class QMessageFilter;
class QMessageSortOrder;

class MessagingHelper
{
public:
    static MessagingHelper* instance();

    MessagingHelper();
    ~MessagingHelper();

    static void filterAccounts(QMessageAccountIdList& accountIds, const QMessageAccountFilter& filter);
    static void orderAccounts(QMessageAccountIdList& accountIds, const QMessageAccountSortOrder &sortOrder);
    static void applyOffsetAndLimitToAccountIdList(QMessageAccountIdList& accountIds, int limit, int offset);
    
    static void filterFolders(QMessageFolderIdList& folderIds, const QMessageFolderFilter& filter);
    static void orderFolders(QMessageFolderIdList& folderIds,  const QMessageFolderSortOrder &sortOrder);
    static void applyOffsetAndLimitToFolderIdList(QMessageFolderIdList& folderIds, int limit, int offset);

    static void filterMessages(QMessageIdList& messageIds, const QMessageFilter& filter);
    static void orderMessages(QMessageIdList& messageIds,  const QMessageSortOrder &sortOrder);
    static void applyOffsetAndLimitToMessageIdList(QMessageIdList& messageIds, int limit, int offset);

    static void handleNestedFiltersFromFolderFilter(QMessageFolderFilter &filter);
    static void handleNestedFiltersFromMessageFilter(QMessageFilter &filter);

private:
   static bool accountLessThan(const QMessageAccountId accountId1, const QMessageAccountId accountId2);
   static bool folderLessThan(const QMessageFolderId folderId1, const QMessageFolderId folderId2);
   static bool messageLessThan(const QMessageId messageId1, const QMessageId messageId2);

private:
    QMessageAccountSortOrder* m_AccountSortOrder;
    QMessageFolderSortOrder* m_FolderSortOrder;
    QMessageSortOrder* m_MessageSortOrder;
};

QTM_END_NAMESPACE

#endif // QMESSAGINGMAEMOHELPERPRIVATE_H