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#include "maemohelpers_p.h"

#include "qmessagefilter_p.h"

#include "qmessagesortorder_p.h"

#include "qmessageaccountfilter_p.h"

#include "qmessageaccountsortorder_p.h"

#include "qmessagefolderfilter_p.h"

#include "qmessagefoldersortorder_p.h"

#include "qmessagestore.h"

QTM_BEGIN_NAMESPACE

Q_GLOBAL_STATIC(MessagingHelper, messagingHelper);

MessagingHelper* MessagingHelper::instance()

{

    return messagingHelper();

}

MessagingHelper::MessagingHelper()

{

}

MessagingHelper::~MessagingHelper()

{

}

void MessagingHelper::filterAccounts(QMessageAccountIdList& accountIds, const QMessageAccountFilter& filter)

{

    QMessageAccountFilterPrivate* pf = QMessageAccountFilterPrivate::implementation(filter);

    if ((pf->_field == QMessageAccountFilterPrivate::None) &&

        (pf->_filterList.count() == 0)) {

        if (pf->_notFilter) {

            // There is only one filter: empty ~QMessageFilter()

            // => accountIds must be cleared

            accountIds.clear();

            return;

        } else {

            // There is only one filter: empty QMessageFilter()

            // => accountIds list can remain intact

            return;

        }

    }

    if (pf->_valid) {

        QMessageStore* store = QMessageStore::instance();

        for (int i=accountIds.count()-1; i >= 0; i--) {

            QMessageAccount account = store->account(accountIds[i]);

            if (!pf->filter(account)) {

                accountIds.removeAt(i);

            }

        }

    }

}

bool MessagingHelper::accountLessThan(const QMessageAccountId accountId1, const QMessageAccountId accountId2)

{

    QMessageStore* store = QMessageStore::instance();

    return QMessageAccountSortOrderPrivate::lessThan(*messagingHelper()->m_AccountSortOrder,

                                                     store->account(accountId1),

                                                     store->account(accountId2));

}

void MessagingHelper::orderAccounts(QMessageAccountIdList& accountIds, const QMessageAccountSortOrder &sortOrder)

{

    messagingHelper()->m_AccountSortOrder = (QMessageAccountSortOrder*)&sortOrder;

    qSort(accountIds.begin(), accountIds.end(), MessagingHelper::accountLessThan);

}

void MessagingHelper::applyOffsetAndLimitToAccountIdList(QMessageAccountIdList& accountIds, int limit, int offset)

{

    if (offset > 0) {

        if (offset > accountIds.count()) {

            accountIds.clear();

        } else {

            for (int i = 0; i < offset; i++) {

                accountIds.removeFirst();

            }

        }

    }

    if (limit > 0) {

        for (int i = accountIds.count()-1; i >= limit; i--) {

            accountIds.removeAt(i);

        }

    }

}

void MessagingHelper::filterFolders(QMessageFolderIdList& folderIds, const QMessageFolderFilter& filter)

{

    QMessageFolderFilterPrivate* pf = QMessageFolderFilterPrivate::implementation(filter);

    if ((pf->_field == QMessageFolderFilterPrivate::None) &&

        (pf->_filterList.count() == 0)) {

        if (pf->_notFilter) {

            // There is only one filter: empty ~QMessageFilter()

            // => accountIds must be cleared

            folderIds.clear();

            return;

        } else {

            // There is only one filter: empty QMessageFilter()

            // => accountIds list can remain intact

            return;

        }

    }

    if (pf->_valid) {

        QMessageStore* store = QMessageStore::instance();

        for (int i=folderIds.count()-1; i >= 0; i--) {

            QMessageFolder folder = store->folder(folderIds[i]);

            if (!pf->filter(folder)) {

                folderIds.removeAt(i);

            }

        }

    }

}

bool MessagingHelper::folderLessThan(const QMessageFolderId folderId1, const QMessageFolderId folderId2)

{

    QMessageStore* store = QMessageStore::instance();

    return QMessageFolderSortOrderPrivate::lessThan(*messagingHelper()->m_FolderSortOrder,

                                                    store->folder(folderId1),

                                                    store->folder(folderId2));

}

void MessagingHelper::orderFolders(QMessageFolderIdList& folderIds,  const QMessageFolderSortOrder &sortOrder)

{

    messagingHelper()->m_FolderSortOrder = (QMessageFolderSortOrder*)&sortOrder;

    qSort(folderIds.begin(), folderIds.end(), MessagingHelper::folderLessThan);

}

void MessagingHelper::applyOffsetAndLimitToFolderIdList(QMessageFolderIdList& folderIds, int limit, int offset)

{

    if (offset > 0) {

        if (offset > folderIds.count()) {

            folderIds.clear();

        } else {

            for (int i = 0; i < offset; i++) {

                folderIds.removeFirst();

            }

        }

    }

    if (limit > 0) {

        for (int i = folderIds.count()-1; i >= limit; i--) {

            folderIds.removeAt(i);

        }

    }

}

void MessagingHelper::filterMessages(QMessageIdList& messageIds, const QMessageFilter& filter)

{

    QMessageFilterPrivate* pf = QMessageFilterPrivate::implementation(filter);

    if ((pf->_field == QMessageFilterPrivate::None) &&

        (pf->_filterList.count() == 0)) {

        if (pf->_notFilter) {

            // There is only one filter: empty ~QMessageFilter()

            // => accountIds must be cleared

            messageIds.clear();

            return;

        } else {

            // There is only one filter: empty QMessageFilter()

            // => accountIds list can remain intact

            return;

        }

    }

    if (pf->_valid) {

        QMessageStore* store = QMessageStore::instance();

        for (int i=messageIds.count()-1; i >= 0; i--) {

            QMessage message = store->message(messageIds[i]);

            if (!pf->filter(message)) {

                messageIds.removeAt(i);

            }

        }

    }

}

bool MessagingHelper::messageLessThan(const QMessageId messageId1, const QMessageId messageId2)

{

    QMessageStore* store = QMessageStore::instance();

    return QMessageSortOrderPrivate::lessThan(*messagingHelper()->m_MessageSortOrder,

                                              store->message(messageId1),

                                              store->message(messageId2));

}

void MessagingHelper::orderMessages(QMessageIdList& messageIds,  const QMessageSortOrder &sortOrder)

{

    messagingHelper()->m_MessageSortOrder = (QMessageSortOrder*)&sortOrder;

    qSort(messageIds.begin(), messageIds.end(), MessagingHelper::messageLessThan);

}

void MessagingHelper::applyOffsetAndLimitToMessageIdList(QMessageIdList& messageIds, int limit, int offset)

{

    if (offset > 0) {

        if (offset > messageIds.count()) {

            messageIds.clear();

        } else {

            for (int i = 0; i < offset; i++) {

                messageIds.removeFirst();

            }

        }

    }

    if (limit > 0) {

        for (int i = messageIds.count()-1; i >= limit; i--) {

            messageIds.removeAt(i);

        }

    }

}

QTM_END_NAMESPACE