/*

 * 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 <QPushButton>

#include <QComboBox>

#include <QLabel>

#include <QLineEdit>

#include <QMessageBox>

#include <QHeaderView>

#include <QTableWidget>

#include "ammoSchemeModel.h"

#include "hwconsts.h"

#include "chatwidget.h"

PageRoomsList::PageRoomsList(QWidget* parent, QSettings * gameSettings, SDLInteraction * sdli) :

  AbstractPage(parent)

{

    QGridLayout * pageLayout = new QGridLayout(this);

    QHBoxLayout * newRoomLayout = new QHBoxLayout();

    QLabel * roomNameLabel = new QLabel(this);

    roomNameLabel->setText(tr("Room Name:"));

    roomName = new QLineEdit(this);

    roomName->setMaxLength(60);

    newRoomLayout->addWidget(roomNameLabel);

    newRoomLayout->addWidget(roomName);

    pageLayout->addLayout(newRoomLayout, 0, 0);

    roomsList = new QTableWidget(this);

    roomsList->setSelectionBehavior(QAbstractItemView::SelectRows);

    roomsList->verticalHeader()->setVisible(false);

    roomsList->horizontalHeader()->setResizeMode(QHeaderView::Interactive);

    roomsList->setAlternatingRowColors(true);

    roomsList->setShowGrid(false);

    roomsList->setSelectionMode(QAbstractItemView::SingleSelection);

    pageLayout->addWidget(roomsList, 1, 0, 3, 1);

    pageLayout->setRowStretch(2, 100);

    QHBoxLayout * filterLayout = new QHBoxLayout();

    QLabel * stateLabel = new QLabel(this);

    stateLabel->setText(tr("State:"));

    CBState = new QComboBox(this);

    CBState->addItem(QComboBox::tr("Any"));

    CBState->addItem(QComboBox::tr("In lobby"));

    CBState->addItem(QComboBox::tr("In progress"));

    filterLayout->addWidget(stateLabel);

    filterLayout->addWidget(CBState);

    filterLayout->addSpacing(30);

    QLabel * ruleLabel = new QLabel(this);

    ruleLabel->setText(tr("Rules:"));

    CBRules = new QComboBox(this);

    CBRules->addItem(QComboBox::tr("Any"));

    // not the most elegant solution but it works

    ammoSchemeModel = new AmmoSchemeModel(this, NULL);

    for (int i = 0; i < ammoSchemeModel->predefSchemesNames.count(); i++)

        CBRules->addItem(ammoSchemeModel->predefSchemesNames.at(i).toAscii().constData());

    filterLayout->addWidget(ruleLabel);

    filterLayout->addWidget(CBRules);

    filterLayout->addSpacing(30);

    QLabel * weaponLabel = new QLabel(this);

    weaponLabel->setText(tr("Weapons:"));

    CBWeapons = new QComboBox(this);

    CBWeapons->addItem(QComboBox::tr("Any"));

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

        QPair<QString,QString> ammo = cDefaultAmmos.at(i);

        CBWeapons->addItem(ammo.first.toAscii().constData());

    }

    filterLayout->addWidget(weaponLabel);

    filterLayout->addWidget(CBWeapons);

    filterLayout->addSpacing(30);

    QLabel * searchLabel = new QLabel(this);

    searchLabel->setText(tr("Search:"));

    searchText = new QLineEdit(this);

    searchText->setMaxLength(60);

    filterLayout->addWidget(searchLabel);

    filterLayout->addWidget(searchText);

    pageLayout->addLayout(filterLayout, 4, 0);

    chatWidget = new HWChatWidget(this, gameSettings, sdli, false);

    pageLayout->addWidget(chatWidget, 5, 0, 1, 2);

    pageLayout->setRowStretch(5, 350);

    BtnCreate = addButton(tr("Create"), pageLayout, 0, 1);

    BtnJoin = addButton(tr("Join"), pageLayout, 1, 1);

    BtnRefresh = addButton(tr("Refresh"), pageLayout, 3, 1);

    BtnClear = addButton(tr("Clear"), pageLayout, 4, 1);

    BtnBack = addButton(":/res/Exit.png", pageLayout, 6, 0, true);

    BtnAdmin = addButton(tr("Admin features"), pageLayout, 6, 1);

    connect(BtnCreate, SIGNAL(clicked()), this, SLOT(onCreateClick()));

    connect(BtnJoin, SIGNAL(clicked()), this, SLOT(onJoinClick()));

    connect(BtnRefresh, SIGNAL(clicked()), this, SLOT(onRefreshClick()));

    connect(BtnClear, SIGNAL(clicked()), this, SLOT(onClearClick()));

    connect(roomsList, SIGNAL(doubleClicked (const QModelIndex &)), this, SLOT(onJoinClick()));

    connect(CBState, SIGNAL(currentIndexChanged (int)), this, SLOT(onRefreshClick()));

    connect(CBRules, SIGNAL(currentIndexChanged (int)), this, SLOT(onRefreshClick()));

    connect(CBWeapons, SIGNAL(currentIndexChanged (int)), this, SLOT(onRefreshClick()));

    connect(searchText, SIGNAL(textChanged (const QString &)), this, SLOT(onRefreshClick()));

    connect(this, SIGNAL(askJoinConfirmation (const QString &)), this, SLOT(onJoinConfirmation(const QString &)), Qt::QueuedConnection);

    gameInLobby = false;

}

void PageRoomsList::setAdmin(bool flag)

{

    BtnAdmin->setVisible(flag);

}

void PageRoomsList::setRoomsList(const QStringList & list)

{

    QBrush red(QColor(255, 0, 0));

    QBrush orange(QColor(127, 127, 0));

    QBrush yellow(QColor(255, 255, 0));

    QBrush green(QColor(0, 255, 0));

    listFromServer = list;

    QString selection = "";

    if(QTableWidgetItem *item = roomsList->item(roomsList->currentRow(), 0))

        selection = item->text();

    roomsList->clear();

    roomsList->setColumnCount(7);

    roomsList->setHorizontalHeaderLabels(

            QStringList() <<

            QTableWidget::tr("Room Name") <<

            QTableWidget::tr("C") <<

            QTableWidget::tr("T") <<

            QTableWidget::tr("Owner") <<

            QTableWidget::tr("Map") <<

            QTableWidget::tr("Rules") <<

            QTableWidget::tr("Weapons")

            );

    // set minimum sizes

//  roomsList->horizontalHeader()->resizeSection(0, 200);

//  roomsList->horizontalHeader()->resizeSection(1, 50);

//  roomsList->horizontalHeader()->resizeSection(2, 50);

//  roomsList->horizontalHeader()->resizeSection(3, 100);

//  roomsList->horizontalHeader()->resizeSection(4, 100);

//  roomsList->horizontalHeader()->resizeSection(5, 100);

//  roomsList->horizontalHeader()->resizeSection(6, 100);

    // set resize modes

//  roomsList->horizontalHeader()->setResizeMode(QHeaderView::Interactive);

    bool gameCanBeJoined = true;

    if (list.size() % 8)

        return;

    roomsList->setRowCount(list.size() / 8);

    for(int i = 0, r = 0; i < list.size(); i += 8, r++)

    {

        // if we are joining a game

        // TODO: Should NOT be done here

        if (gameInLobby) {

            if (gameInLobbyName == list[i + 1]) {

                gameCanBeJoined = list[i].compare("True");

            }

        }

        // check filter settings

        #define NO_FILTER_MATCH roomsList->setRowCount(roomsList->rowCount() - 1); --r; continue

        if (list[i].compare("True") && CBState->currentIndex() == 2) { NO_FILTER_MATCH; }

        if (list[i].compare("False") && CBState->currentIndex() == 1) { NO_FILTER_MATCH; }

        if (CBRules->currentIndex() != 0 && list[i + 6].compare(CBRules->currentText())) { NO_FILTER_MATCH; }

        if (CBWeapons->currentIndex() != 0 && list[i + 7].compare(CBWeapons->currentText())) { NO_FILTER_MATCH; }

        bool found = list[i + 1].contains(searchText->text(), Qt::CaseInsensitive);

        if (!found) {

            for (int a = 4; a <= 7; ++a) {

                QString compString = list[i + a];

                if (a == 5 && compString == "+rnd+") {

                    compString = "Random Map";

                } else if (a == 5 && compString == "+maze+") {

                    compString = "Random Maze";

                } else if (a == 5 && compString == "+drawn+") {

                    compString = "Drawn Map";

                }

                if (compString.contains(searchText->text(), Qt::CaseInsensitive)) {

                    found = true;

                    break;

                }

            }

        }

        if (!searchText->text().isEmpty() && !found) { NO_FILTER_MATCH; }

        QTableWidgetItem * item;

        item = new QTableWidgetItem(list[i + 1]); // room name

        item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);

        // pick appropriate room icon and tooltip (game in progress yes/no; later maybe locked rooms etc.)

        if(list[i].compare("True"))

        {

            item->setIcon(QIcon(":/res/iconTime.png"));// game is in lobby

            item->setToolTip(tr("This game is in lobby.\nYou may join and start playing once the game starts."));

        }

        else

        {

            item->setIcon(QIcon(":/res/iconDamage.png"));// game has started

            item->setToolTip(tr("This game is in progress.\nYou may join and spectate now but you'll have to wait for the game to end to start playing."));

        }

        roomsList->setItem(r, 0, item);

        item = new QTableWidgetItem(list[i + 2]); // number of clients

        item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);

        item->setTextAlignment(Qt::AlignCenter);

        item->setToolTip(tr("There are %1 clients connected to this room.", "", list[i + 2].toInt()).arg(list[i + 2]));

        roomsList->setItem(r, 1, item);

        item = new QTableWidgetItem(list[i + 3]); // number of teams

        item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);

        item->setTextAlignment(Qt::AlignCenter);

        item->setToolTip(tr("There are %1 teams participating in this room.", "", list[i + 3].toInt()).arg(list[i + 3]));

        //Should we highlight "full" games? Might get misinterpreted

        //if(list[i + 3].toInt() >= cMaxTeams)

        //    item->setForeground(red);

        roomsList->setItem(r, 2, item);

        item = new QTableWidgetItem(list[i + 4].left(15)); // name of host

        item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);

        item->setToolTip(tr("%1 is the host. He may adjust settings and start the game.").arg(list[i + 4]));

        roomsList->setItem(r, 3, item);

        if(list[i + 5] == "+rnd+")

        {

            item = new QTableWidgetItem(tr("Random Map")); // selected map (is randomized)

// FIXME - need real icons. Disabling until then

//            item->setIcon(QIcon(":/res/mapRandom.png"));

        }

        else if (list[i+5] == "+maze+")

        {

            item = new QTableWidgetItem(tr("Random Maze"));

// FIXME - need real icons. Disabling until then

//            item->setIcon(QIcon(":/res/mapMaze.png"));

        }

        else

        {

            item = new QTableWidgetItem(list[i + 5]); // selected map

            // check to see if we've got this map

            // not perfect but a start

            if(!mapList->contains(list[i + 5]))

            {

                item->setForeground(red);

                item->setIcon(QIcon(":/res/mapMissing.png"));

            }

            else

            {

               // todo: mission icon?

// FIXME - need real icons. Disabling until then

//               item->setIcon(QIcon(":/res/mapCustom.png"));

            }

        }

        item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);

        item->setToolTip(tr("Games may be played on precreated or randomized maps."));

        roomsList->setItem(r, 4, item);

        item = new QTableWidgetItem(list[i + 6].left(24)); // selected game scheme

        item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);

        item->setToolTip(tr("The Game Scheme defines general options and preferences like Round Time, Sudden Death or Vampirism."));

        roomsList->setItem(r, 5, item);

        item = new QTableWidgetItem(list[i + 7].left(24)); // selected weapon scheme

        item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);

        item->setToolTip(tr("The Weapon Scheme defines available weapons and their ammunition count."));

        roomsList->setItem(r, 6, item);

        if(!list[i + 1].compare(selection) && !selection.isEmpty())

            roomsList->selectionModel()->setCurrentIndex(roomsList->model()->index(r, 0), QItemSelectionModel::SelectCurrent | QItemSelectionModel::Rows);

    }

    roomsList->horizontalHeader()->setResizeMode(0, QHeaderView::Stretch);

    roomsList->horizontalHeader()->setResizeMode(1, QHeaderView::ResizeToContents);

    roomsList->horizontalHeader()->setResizeMode(2, QHeaderView::ResizeToContents);

    roomsList->horizontalHeader()->setResizeMode(3, QHeaderView::ResizeToContents);

    roomsList->horizontalHeader()->setResizeMode(4, QHeaderView::ResizeToContents);

    roomsList->horizontalHeader()->setResizeMode(5, QHeaderView::ResizeToContents);

    roomsList->horizontalHeader()->setResizeMode(6, QHeaderView::ResizeToContents);

    // TODO: Should NOT be done here

    if (gameInLobby) {

        gameInLobby = false;

        if (gameCanBeJoined) {

            emit askForJoinRoom(gameInLobbyName);

        } else {

            emit askJoinConfirmation(gameInLobbyName);

        }

    }

//  roomsList->resizeColumnsToContents();

}

void PageRoomsList::onCreateClick()

{

    if (roomName->text().size())

        emit askForCreateRoom(roomName->text());

    else

        QMessageBox::critical(this,

                tr("Error"),

                tr("Please enter room name"),

                tr("OK"));

}

void PageRoomsList::onJoinClick()

{

    QTableWidgetItem * curritem = roomsList->item(roomsList->currentRow(), 0);

    if (!curritem)

    {

        QMessageBox::critical(this,

                tr("Error"),

                tr("Please select room from the list"),

                tr("OK"));

        return;

    }

    for (int i = 0; i < listFromServer.size(); i += 8) {

        if (listFromServer[i + 1] == curritem->data(Qt::DisplayRole).toString()) {

            gameInLobby = listFromServer[i].compare("True");

            break;

        }

    }

    if (gameInLobby) {

        gameInLobbyName = curritem->data(Qt::DisplayRole).toString();

        emit askForRoomList();

    } else {

        emit askForJoinRoom(curritem->data(Qt::DisplayRole).toString());

    }

}

void PageRoomsList::onRefreshClick()

{

    emit askForRoomList();

}

void PageRoomsList::onClearClick()

{

    CBState->setCurrentIndex(0);

    CBRules->setCurrentIndex(0);

    CBWeapons->setCurrentIndex(0);

    searchText->clear();

}

void PageRoomsList::onJoinConfirmation(const QString & room)

{

    if (QMessageBox::warning(this,

        tr("Warning"),

        tr("The game you are trying to join has started.\nDo you still want to join the room?"),

        QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes)

    {

        emit askForJoinRoom(room);

    }

}