/*
 * Copyright (c) 2012 Mark Liversedge (liversedge@gmail.com)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "SearchFilterBox.h"
#include "Context.h"
#include "FreeSearch.h"
#include "DataFilter.h"
#include "SearchBox.h"
#include "Athlete.h"
#include "RideCache.h"
#include "RideItem.h"

SearchFilterBox::SearchFilterBox(QWidget *parent, Context *context, bool nochooser) : QWidget(parent), context(context)
{

    setContentsMargins(0,0,0,0);
    QVBoxLayout *contents = new QVBoxLayout(this);
    contents->setSpacing(0);
    contents->setContentsMargins(0,0,0,0);

    // no column chooser if my parent widget is a modal widget
    searchbox = new SearchBox(context, this, nochooser);
    searchbox->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed));
    contents->addWidget(searchbox);

    freeSearch = new FreeSearch(this, context);
    datafilter = new DataFilter(this,context);

    // text searching
    connect(searchbox, SIGNAL(submitQuery(QString)), freeSearch, SLOT(search(QString)));
    connect(freeSearch, SIGNAL(results(QStringList)), this, SIGNAL(searchResults(QStringList)));
    connect(searchbox, SIGNAL(clearQuery()), this, SIGNAL(searchClear()));

    // data filtering
    connect(searchbox, SIGNAL(submitFilter(Context*,QString)), datafilter, SLOT(parseFilter(Context*,QString)));
    connect(datafilter, SIGNAL(results(QStringList)), this, SIGNAL(searchResults(QStringList)));
    connect(searchbox, SIGNAL(clearFilter()), this, SIGNAL(searchClear()));
    connect(searchbox, SIGNAL(clearFilter()), datafilter, SLOT(clearFilter()));

    // syntax check
    connect(datafilter, SIGNAL(parseGood()), searchbox, SLOT(setGood()));
    connect(datafilter, SIGNAL(parseBad(QStringList)), searchbox, SLOT(setBad(QStringList)));
}

// static utility function to get list of files that match a filter
QStringList 
SearchFilterBox::matches(Context *context, QString filter)
{
    QStringList returning;
    SearchBox::SearchBoxMode mode = SearchBox::Search;
    QString spec;

    // what kind of matching are we going to perform ?
    if (filter.startsWith("search:")) {
        mode = SearchBox::Search;
        spec = (filter.mid(7, filter.length()-7));
    } else if (filter.startsWith("filter")) {
        mode = SearchBox::Filter;
        spec = (filter.mid(7, filter.length()-7));
    } else {
        // whatever we were passed
        spec = filter;
    }

    // no spec/filter just return all
    if (spec == "") {
        foreach(RideItem *item, context->athlete->rideCache->rides()) returning << item->fileName;
        return returning;
    }

    // search or filter then.......
    if (mode == SearchBox::Filter) {

        DataFilter df(NULL, context, spec);
        foreach(RideItem *item, context->athlete->rideCache->rides()) {
            Result res = df.evaluate(item, NULL);
            if (res.isNumber && res.number())
                returning << item->fileName;
        }
    }

    if (mode == SearchBox::Search) {

        FreeSearch fs(NULL, context);
        returning = fs.search(spec);
    }

    return returning;
}

bool 
SearchFilterBox::isNull(QString filter) // is the filter null ?
{
    if (filter == "filter:" || filter == "search:" || filter == "") return true;
    else return false;
}

QString
SearchFilterBox::filter()
{
    return QString("%1:%2").arg(searchbox->getMode() == SearchBox::Search ? "search" : "filter")
                           .arg(searchbox->text());
}

void
SearchFilterBox::setFilter(QString spec)
{
    if (spec.startsWith("filter:")) {
        searchbox->setMode(SearchBox::Filter);
    } else {
        searchbox->setMode(SearchBox::Search);
    }
    searchbox->setText(spec.mid(7, spec.length()-7));
}