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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)

{

    if (accountIds.count() && !filter.isEmpty()) {

        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)

{

    if (!sortOrder.isEmpty()) {

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

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

    }

}

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

{

    if (accountIds.count() == 0) {

        return;

    }

    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)

{

    if (folderIds.count() && !filter.isEmpty()) {

        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)

{

    if (!sortOrder.isEmpty()) {

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

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

    }

}

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

{

    if (folderIds.count() == 0) {

        return;

    }

    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)

{

    if (messageIds.count() && !filter.isEmpty()) {

        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)

{

    if (!sortOrder.isEmpty()) {

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

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

    }

}

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

{

    if (messageIds.count() == 0) {

        return;

    }

    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);

        }

    }

}

void MessagingHelper::handleNestedFiltersFromFolderFilter(QMessageFolderFilter &filter)

{

    QMessageStore* store = QMessageStore::instance();

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

    if (pMFFilter->_filterList.count() > 0) {

        int filterListCount = pMFFilter->_filterList.count();

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

            for (int j=0; j < pMFFilter->_filterList[i].count(); j++) {

                QMessageFolderFilterPrivate* pMFFilter2 = QMessageFolderFilterPrivate::implementation(pMFFilter->_filterList[i][j]);

                if (pMFFilter2->_field == QMessageFolderFilterPrivate::ParentAccountIdFilter) {

                    QMessageAccountIdList accountIds = store->queryAccounts(*pMFFilter2->_accountFilter, QMessageAccountSortOrder(), 0, 0);

                    QMessageDataComparator::InclusionComparator cmp(static_cast<QMessageDataComparator::InclusionComparator>(pMFFilter2->_comparatorValue));

                    if (accountIds.count() > 0) {

                        pMFFilter->_filterList[i].removeAt(j);

                        if (cmp == QMessageDataComparator::Includes) {

                            for (int x = 0; x < accountIds.count(); x++) {

                                if (x == 0) {

                                    if (x+1 < accountIds.count()) {

                                        pMFFilter->_filterList.append(pMFFilter->_filterList[i]);

                                    }

                                    pMFFilter->_filterList[i].append(QMessageFolderFilter::byParentAccountId(accountIds[x],QMessageDataComparator::Equal));

                                    qSort(pMFFilter->_filterList[i].begin(), pMFFilter->_filterList[i].end(), QMessageFolderFilterPrivate::lessThan);

                                } else {

                                    if (x+1 < accountIds.count()) {

                                        pMFFilter->_filterList.append(pMFFilter->_filterList[pMFFilter->_filterList.count()-1]);

                                        pMFFilter->_filterList[pMFFilter->_filterList.count()-2].append(QMessageFolderFilter::byParentAccountId(accountIds[x],QMessageDataComparator::Equal));

                                        qSort(pMFFilter->_filterList[pMFFilter->_filterList.count()-2].begin(), pMFFilter->_filterList[pMFFilter->_filterList.count()-2].end(), QMessageFolderFilterPrivate::lessThan);

                                    } else {

                                        pMFFilter->_filterList[pMFFilter->_filterList.count()-1].append(QMessageFolderFilter::byParentAccountId(accountIds[x],QMessageDataComparator::Equal));

                                        qSort(pMFFilter->_filterList[pMFFilter->_filterList.count()-1].begin(), pMFFilter->_filterList[pMFFilter->_filterList.count()-1].end(), QMessageFolderFilterPrivate::lessThan);

                                    }

                                }

                            }

                        } else { // Excludes

                            for (int x = 0; x < accountIds.count(); x++) {

                                pMFFilter->_filterList[i].append(QMessageFolderFilter::byParentAccountId(accountIds[x],QMessageDataComparator::NotEqual));

                            }

                            qSort(pMFFilter->_filterList[i].begin(), pMFFilter->_filterList[i].end(), QMessageFolderFilterPrivate::lessThan);

                        }

                    } else {

                        delete pMFFilter2->_accountFilter;

                        pMFFilter2->_accountFilter = 0;

                        pMFFilter2->_field = QMessageFolderFilterPrivate::Id;

                        qSort(pMFFilter->_filterList[i].begin(), pMFFilter->_filterList[i].end(), QMessageFolderFilterPrivate::lessThan);

                    }

                } else {

                    break;

                }

            }

        }

    } else {

        if (pMFFilter->_field == QMessageFolderFilterPrivate::ParentAccountIdFilter) {

            QMessageAccountIdList accountIds = store->queryAccounts(*pMFFilter->_accountFilter, QMessageAccountSortOrder(), 0, 0);

            QMessageDataComparator::InclusionComparator cmp(static_cast<QMessageDataComparator::InclusionComparator>(pMFFilter->_comparatorValue));

            if (accountIds.count() > 0) {

                for (int i=0; i < accountIds.count(); i++) {

                    if (i == 0) {

                        delete pMFFilter->_accountFilter;

                        pMFFilter->_accountFilter = 0;

                        pMFFilter->_field = QMessageFolderFilterPrivate::ParentAccountId;

                        pMFFilter->_value = accountIds[0].toString();

                        pMFFilter->_comparatorType = QMessageFolderFilterPrivate::Equality;

                        if (cmp == QMessageDataComparator::Includes) {

                            pMFFilter->_comparatorValue = static_cast<int>(QMessageDataComparator::Equal);

                        } else { // Excludes

                            pMFFilter->_comparatorValue = static_cast<int>(QMessageDataComparator::NotEqual);

                        }

                    } else {

                        if (cmp == QMessageDataComparator::Includes) {

                            filter |= QMessageFolderFilter::byParentAccountId(accountIds[i],QMessageDataComparator::Equal);

                        } else { // Excludes

                            filter &= QMessageFolderFilter::byParentAccountId(accountIds[i],QMessageDataComparator::NotEqual);

                        }

                    }

                }

            } else {

                delete pMFFilter->_accountFilter;

                pMFFilter->_accountFilter = 0;

                pMFFilter->_field = QMessageFolderFilterPrivate::Id;

            }

        }

    }

}

void MessagingHelper::handleNestedFiltersFromMessageFilter(QMessageFilter &filter)

{

    QMessageStore* store = QMessageStore::instance();

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

    if (pMFFilter->_filterList.count() > 0) {

        int filterListCount = pMFFilter->_filterList.count();

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

            for (int j=0; j < pMFFilter->_filterList[i].count(); j++) {

                QMessageFilterPrivate* pMFFilter2 = QMessageFilterPrivate::implementation(pMFFilter->_filterList[i][j]);

                if (pMFFilter2->_field == QMessageFilterPrivate::ParentAccountIdFilter) {

                    QMessageAccountIdList accountIds = store->queryAccounts(*pMFFilter2->_accountFilter, QMessageAccountSortOrder(), 0, 0);

                    QMessageDataComparator::InclusionComparator cmp(static_cast<QMessageDataComparator::InclusionComparator>(pMFFilter2->_comparatorValue));

                    if (accountIds.count() > 0) {

                        pMFFilter->_filterList[i].removeAt(j);

                        if (cmp == QMessageDataComparator::Includes) {

                            for (int x = 0; x < accountIds.count(); x++) {

                                if (x == 0) {

                                    if (x+1 < accountIds.count()) {

                                        pMFFilter->_filterList.append(pMFFilter->_filterList[i]);

                                    }

                                    pMFFilter->_filterList[i].append(QMessageFilter::byParentAccountId(accountIds[x],QMessageDataComparator::Equal));

                                    qSort(pMFFilter->_filterList[i].begin(), pMFFilter->_filterList[i].end(), QMessageFilterPrivate::lessThan);

                                } else {

                                    if (x+1 < accountIds.count()) {

                                        pMFFilter->_filterList.append(pMFFilter->_filterList[pMFFilter->_filterList.count()-1]);

                                        pMFFilter->_filterList[pMFFilter->_filterList.count()-2].append(QMessageFilter::byParentAccountId(accountIds[x],QMessageDataComparator::Equal));

                                        qSort(pMFFilter->_filterList[pMFFilter->_filterList.count()-2].begin(), pMFFilter->_filterList[pMFFilter->_filterList.count()-2].end(), QMessageFilterPrivate::lessThan);

                                    } else {

                                        pMFFilter->_filterList[pMFFilter->_filterList.count()-1].append(QMessageFilter::byParentAccountId(accountIds[x],QMessageDataComparator::Equal));

                                        qSort(pMFFilter->_filterList[pMFFilter->_filterList.count()-1].begin(), pMFFilter->_filterList[pMFFilter->_filterList.count()-1].end(), QMessageFilterPrivate::lessThan);

                                    }

                                }

                            }

                        } else { // Excludes

                            for (int x = 0; x < accountIds.count(); x++) {

                                pMFFilter->_filterList[i].append(QMessageFilter::byParentAccountId(accountIds[x],QMessageDataComparator::NotEqual));

                            }

                            qSort(pMFFilter->_filterList[i].begin(), pMFFilter->_filterList[i].end(), QMessageFilterPrivate::lessThan);

                        }

                    } else {

                        delete pMFFilter2->_accountFilter;

                        pMFFilter2->_accountFilter = 0;

                        pMFFilter2->_field = QMessageFilterPrivate::Id;

                        qSort(pMFFilter->_filterList[i].begin(), pMFFilter->_filterList[i].end(), QMessageFilterPrivate::lessThan);

                    }

                } else if (pMFFilter2->_field == QMessageFilterPrivate::ParentFolderIdFilter) {

                    QMessageFolderIdList folderIds = store->queryFolders(*pMFFilter2->_folderFilter, QMessageFolderSortOrder(), 0, 0);

                    QMessageDataComparator::InclusionComparator cmp(static_cast<QMessageDataComparator::InclusionComparator>(pMFFilter2->_comparatorValue));

                    if (folderIds.count() > 0) {

                        pMFFilter->_filterList[i].removeAt(j);

                        if (cmp == QMessageDataComparator::Includes) {

                            for (int x = 0; x < folderIds.count(); x++) {

                                if (x == 0) {

                                    if (x+1 < folderIds.count()) {

                                        pMFFilter->_filterList.append(pMFFilter->_filterList[i]);

                                    }

                                    pMFFilter->_filterList[i].append(QMessageFilter::byParentFolderId(folderIds[x],QMessageDataComparator::Equal));

                                    qSort(pMFFilter->_filterList[i].begin(), pMFFilter->_filterList[i].end(), QMessageFilterPrivate::lessThan);

                                } else {

                                    if (x+1 < folderIds.count()) {

                                        pMFFilter->_filterList.append(pMFFilter->_filterList[pMFFilter->_filterList.count()-1]);

                                        pMFFilter->_filterList[pMFFilter->_filterList.count()-2].append(QMessageFilter::byParentFolderId(folderIds[x],QMessageDataComparator::Equal));

                                        qSort(pMFFilter->_filterList[pMFFilter->_filterList.count()-2].begin(), pMFFilter->_filterList[pMFFilter->_filterList.count()-2].end(), QMessageFilterPrivate::lessThan);

                                    } else {

                                        pMFFilter->_filterList[pMFFilter->_filterList.count()-1].append(QMessageFilter::byParentFolderId(folderIds[x],QMessageDataComparator::Equal));

                                        qSort(pMFFilter->_filterList[pMFFilter->_filterList.count()-1].begin(), pMFFilter->_filterList[pMFFilter->_filterList.count()-1].end(), QMessageFilterPrivate::lessThan);

                                    }

                                }

                            }

                        } else { // Excludes

                            for (int x = 0; x < folderIds.count(); x++) {

                                pMFFilter->_filterList[i].append(QMessageFilter::byParentFolderId(folderIds[x],QMessageDataComparator::NotEqual));

                            }

                            qSort(pMFFilter->_filterList[i].begin(), pMFFilter->_filterList[i].end(), QMessageFilterPrivate::lessThan);

                        }

                    } else {

                        delete pMFFilter2->_folderFilter;

                        pMFFilter2->_folderFilter = 0;

                        pMFFilter2->_field = QMessageFilterPrivate::Id;

                        qSort(pMFFilter->_filterList[i].begin(), pMFFilter->_filterList[i].end(), QMessageFilterPrivate::lessThan);

                    }

                } else {

                    break;

                }

            }

        }

    } else {

        if (pMFFilter->_field == QMessageFilterPrivate::ParentAccountIdFilter) {

            QMessageAccountIdList accountIds = store->queryAccounts(*pMFFilter->_accountFilter, QMessageAccountSortOrder(), 0, 0);

            QMessageDataComparator::InclusionComparator cmp(static_cast<QMessageDataComparator::InclusionComparator>(pMFFilter->_comparatorValue));

            if (accountIds.count() > 0) {

                for (int i=0; i < accountIds.count(); i++) {

                    if (i == 0) {

                        delete pMFFilter->_accountFilter;

                        pMFFilter->_accountFilter = 0;

                        pMFFilter->_field = QMessageFilterPrivate::ParentAccountId;

                        pMFFilter->_value = accountIds[0].toString();

                        pMFFilter->_comparatorType = QMessageFilterPrivate::Equality;

                        if (cmp == QMessageDataComparator::Includes) {

                            pMFFilter->_comparatorValue = static_cast<int>(QMessageDataComparator::Equal);

                        } else { // Excludes

                            pMFFilter->_comparatorValue = static_cast<int>(QMessageDataComparator::NotEqual);

                        }

                    } else {

                        if (cmp == QMessageDataComparator::Includes) {

                            filter |= QMessageFilter::byParentAccountId(accountIds[i],QMessageDataComparator::Equal);

                        } else { // Excludes

                            filter &= QMessageFilter::byParentAccountId(accountIds[i],QMessageDataComparator::NotEqual);

                        }

                    }

                }

            } else {

                delete pMFFilter->_accountFilter;

                pMFFilter->_accountFilter = 0;

                pMFFilter->_field = QMessageFilterPrivate::Id;

            }

        } else if (pMFFilter->_field == QMessageFilterPrivate::ParentFolderIdFilter) {

            QMessageFolderIdList folderIds = store->queryFolders(*pMFFilter->_folderFilter, QMessageFolderSortOrder(), 0, 0);

            QMessageDataComparator::InclusionComparator cmp(static_cast<QMessageDataComparator::InclusionComparator>(pMFFilter->_comparatorValue));

            if (folderIds.count() > 0) {

                for (int i=0; i < folderIds.count(); i++) {

                    if (i == 0) {

                        delete pMFFilter->_folderFilter;

                        pMFFilter->_folderFilter = 0;

                        pMFFilter->_field = QMessageFilterPrivate::ParentFolderId;

                        pMFFilter->_value = folderIds[0].toString();

                        pMFFilter->_comparatorType = QMessageFilterPrivate::Equality;

                        if (cmp == QMessageDataComparator::Includes) {

                            pMFFilter->_comparatorValue = static_cast<int>(QMessageDataComparator::Equal);

                        } else { // Excludes

                            pMFFilter->_comparatorValue = static_cast<int>(QMessageDataComparator::NotEqual);

                        }

                    } else {

                        if (cmp == QMessageDataComparator::Includes) {

                            filter |= QMessageFilter::byParentFolderId(folderIds[i],QMessageDataComparator::Equal);

                        } else { // Excludes

                            filter &= QMessageFilter::byParentFolderId(folderIds[i],QMessageDataComparator::NotEqual);

                        }

                    }

                }

            } else {

                delete pMFFilter->_folderFilter;

                pMFFilter->_folderFilter = 0;

                pMFFilter->_field = QMessageFilterPrivate::Id;

            }

        }

    }

}