/*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2006-2011 Andrey Korotaev <unC0Rr@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; version 2 of the License

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

 */

#include <QGridLayout>

#include <QLabel>

#include <QListWidget>

#include <QListWidgetItem>

#include <QPushButton>

#include "pagetraining.h"

#include "hwconsts.h"

QLayout * PageTraining::bodyLayoutDefinition()

{

    QGridLayout * pageLayout = new QGridLayout();

// left column

    // declare start button, caption and description

    btnStart = formattedButton(":/res/Trainings.png", true);

    btnStart->setToolTip(QPushButton::tr("Go!"));

    lblCaption = new QLabel(this);

    lblDescription = new QLabel(this);

    lblDescription->setWordWrap(true);

    // add start button, caption and description to 3 different rows

    pageLayout->addWidget(btnStart, 0, 0);

    pageLayout->addWidget(lblCaption, 1, 0);

    pageLayout->addWidget(lblDescription, 2, 0);

    // make first and last row stretch vertically

    pageLayout->setRowStretch(0, 1);

    pageLayout->setRowStretch(1, 0);

    pageLayout->setRowStretch(2, 1);

    // make both columns equal width

    pageLayout->setColumnStretch(0, 1);

    pageLayout->setColumnStretch(1, 1);

    // center widgets within their grid cells

    pageLayout->setAlignment(btnStart, Qt::AlignHCenter | Qt::AlignVCenter);

    pageLayout->setAlignment(lblCaption, Qt::AlignHCenter | Qt::AlignVCenter);

    pageLayout->setAlignment(lblDescription, Qt::AlignHCenter | Qt::AlignVCenter);

// right column

    lstMissions = new QListWidget(this);

    pageLayout->addWidget(lstMissions, 0, 1, 3, 1); // spans over 3 rows

    return pageLayout;

}

void PageTraining::connectSignals()

{

    connect(lstMissions, SIGNAL(itemSelectionChanged()), this, SLOT(updateInfo()));

    connect(lstMissions, SIGNAL(itemDoubleClicked(QListWidgetItem *)), this, SLOT(startSelected()));

    connect(btnStart, SIGNAL(clicked()), this, SLOT(startSelected()));

}

PageTraining::PageTraining(QWidget* parent) : AbstractPage(parent)

{

    initPage();

    QDir tmpdir;

    tmpdir.cd(cfgdir->absolutePath());

    tmpdir.cd("Data/Missions/Training");

    QStringList missionList = scriptList(tmpdir);

    missionList.sort();

    tmpdir.cd(datadir->absolutePath());

    tmpdir.cd("Missions/Training");

    QStringList defaultList = scriptList(tmpdir);

    defaultList.sort();

    missionList << defaultList;

    // add only default scripts that have names different from detected user scripts

    foreach (const QString & mission, missionList)

    {

        QListWidgetItem * item = new QListWidgetItem(mission);

        // replace underscores in mission name with spaces

        item->setText(item->text().replace("_", " "));

        // store original name in data

        item->setData(Qt::UserRole, mission);

        lstMissions->addItem(item);

    }

    updateInfo();

}

QStringList PageTraining::scriptList(const QDir & scriptDir) const

{

    QDir dir = scriptDir;

    dir.setFilter(QDir::Files);

    return dir.entryList(QStringList("*.lua")).replaceInStrings(QRegExp("^(.*)\\.lua"), "\\1");

}

void PageTraining::startSelected()

{

}

void PageTraining::updateInfo()

{

    if (lstMissions->currentItem())

    {

        QString thumbFile = datadir->absolutePath() + "/Graphics/Missions/Training/" + lstMissions->currentItem()->data(Qt::UserRole).toString() + ".png";

        if (QFile::exists(thumbFile))

            btnStart->setIcon(QIcon(thumbFile));

        else

            btnStart->setIcon(QIcon(":/res/Trainings.png"));

        lblCaption->setText(lstMissions->currentItem()->text());

        // TODO load mission description from file

        lblDescription->setText("< Imagine\nMission\nDescription\nhere >\n\nThank you.");

    }

    else

    {

        btnStart->setIcon(QIcon(":/res/Trainings.png"));

        lblCaption->setText(tr("Select a mission on the right -->"));

        // TODO better text and tr()

        lblDescription->setText("Welcome to the Training screen.\n\n\n...\nWHAT?\nIt's not finished yet...");

    }

}