/*
 * Hedgewars, a free turn based strategy game
 * Copyright (c) 2006-2008 Ulyanov Igor <iulyanov@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 "selectWeapon.h"
#include "weaponItem.h"
#include "hwconsts.h"

#include <QPushButton>
#include <QGridLayout>
#include <QHBoxLayout>
#include <QLabel>
#include <QBitmap>
#include <QLineEdit>
#include <QSettings>
#include <QMessageBox>
#include <QTabWidget>
#include <math.h>

QImage getAmmoImage(int num)
{
	static QImage ammo(":Ammos.png");
    int x = floor(num/(ammo.height()/32));
    int y = (num-((ammo.height()/32)*x))*32;
    x*=32;
	return ammo.copy(x, y, 32, 32);
}

SelWeaponItem::SelWeaponItem(bool allowInfinite, int iconNum, int wNum, QWidget* parent) :
	QWidget(parent)
{
	QHBoxLayout* hbLayout = new QHBoxLayout(this);
	hbLayout->setSpacing(1);
	hbLayout->setMargin(1);

	QLabel* lbl = new QLabel(this);
	lbl->setPixmap(QPixmap::fromImage(getAmmoImage(iconNum)));
	lbl->setMaximumWidth(30);
	lbl->setGeometry(0, 0, 30, 30);
	hbLayout->addWidget(lbl);

	item = new WeaponItem(QImage(":/res/ammopic.png"), this);
	item->setItemsNum(wNum);
	item->setInfinityState(allowInfinite);
	hbLayout->addWidget(item);

	hbLayout->setStretchFactor(lbl, 1);
	hbLayout->setStretchFactor(item, 99);
	hbLayout->setAlignment(lbl, Qt::AlignLeft | Qt::AlignVCenter);
	hbLayout->setAlignment(item, Qt::AlignLeft | Qt::AlignVCenter);
}

void SelWeaponItem::setItemsNum(const unsigned char num)
{
	item->setItemsNum(num);
}

unsigned char SelWeaponItem::getItemsNum() const
{
	return item->getItemsNum();
}

SelWeaponWidget::SelWeaponWidget(int numItems, QWidget* parent) :
  QFrame(parent),
  m_numItems(numItems)
{
	wconf = new QSettings(cfgdir->absolutePath() + "/weapons.ini", QSettings::IniFormat, this);

	for(int i = 0; i < cDefaultAmmos.size(); ++i)
		wconf->setValue(cDefaultAmmos[i].first, cDefaultAmmos[i].second);

	QStringList keys = wconf->allKeys();
	for(int i = 0; i < keys.size(); i++)
	{
		if (wconf->value(keys[i]).toString().size() != cDefaultAmmoStore->size())
			wconf->remove(keys[i]);
	}

	QString currentState = *cDefaultAmmoStore;

	QTabWidget * tbw = new QTabWidget(this);
	QWidget * page1 = new QWidget(this);
	p1Layout = new QGridLayout(page1);
	p1Layout->setSpacing(1);
	p1Layout->setMargin(1);
	QWidget * page2 = new QWidget(this);
	p2Layout = new QGridLayout(page2);
	p2Layout->setSpacing(1);
	p2Layout->setMargin(1);

	tbw->addTab(page1, tr("Weapon set"));
	tbw->addTab(page2, tr("Probabilities"));

	QGridLayout * pageLayout = new QGridLayout(this);
	pageLayout->addWidget(tbw);


	int j = -1;
	int i = 0, k = 0;
	for(; i < m_numItems; ++i) {
		if (i == 6) continue;
		if (k % 4 == 0) ++j;
		SelWeaponItem * swi = new SelWeaponItem(true, i, currentState[i].digitValue(), this);
		weaponItems[i].append(swi);
		p1Layout->addWidget(swi, j, k % 4);

		SelWeaponItem * pwi = new SelWeaponItem(false, i, currentState[numItems + i].digitValue(), this);
		weaponItems[i].append(pwi);
		p2Layout->addWidget(pwi, j, k % 4);

		++k;
	}

	//pLayout->setRowStretch(5, 100);
	m_name = new QLineEdit(this);
	pageLayout->addWidget(m_name, i, 0, 1, 5);
}

void SelWeaponWidget::setWeapons(const QString& ammo)
{
	for(int i = 0; i < m_numItems; ++i) {
		twi::iterator it = weaponItems.find(i);
		if (it == weaponItems.end()) continue;
		it.value()[0]->setItemsNum(ammo[i].digitValue());
		it.value()[1]->setItemsNum(ammo[m_numItems + i].digitValue());
	}
	update();
}

void SelWeaponWidget::setDefault()
{
	setWeapons(*cDefaultAmmoStore);
}

void SelWeaponWidget::save()
{
	if (m_name->text() == "Default") {
		QMessageBox impossible(QMessageBox::Warning, QMessageBox::tr("Weapons"), QMessageBox::tr("Can not edit default weapon set"));
		impossible.exec();
		return;
	}

	if (m_name->text() == "") return;

	QString state1;
	QString state2;

	for(int i = 0; i < m_numItems; ++i) {
		twi::const_iterator it = weaponItems.find(i);
		int num = it == weaponItems.end() ? 9 : it.value()[0]->getItemsNum(); // 9 is for 'skip turn'
		state1.append(QString::number(num));
		int prob = it == weaponItems.end() ? 0 : it.value()[1]->getItemsNum();
		state2.append(QString::number(prob));
	}
	if (curWeaponsName != "") {
		// remove old entry
		wconf->remove(curWeaponsName);
	}
	wconf->setValue(m_name->text(), state1 + state2);
	emit weaponsChanged();
}

int SelWeaponWidget::operator [] (unsigned int weaponIndex) const
{
	twi::const_iterator it = weaponItems.find(weaponIndex);
	return it == weaponItems.end() ? 9 : it.value()[0]->getItemsNum();
}

QString SelWeaponWidget::getWeaponsString(const QString& name) const
{
	return wconf->value(name).toString();
}

void SelWeaponWidget::deleteWeaponsName()
{
	if (curWeaponsName == "") return;

	if (curWeaponsName == "Default") {
		QMessageBox impossible(QMessageBox::Warning, QMessageBox::tr("Weapons"), QMessageBox::tr("Can not delete default weapon set"));
		impossible.exec();
		return;
	}

	QMessageBox reallyDelete(QMessageBox::Question, QMessageBox::tr("Weapons"), QMessageBox::tr("Really delete this weapon set?"), QMessageBox::Ok | QMessageBox::Cancel);

	if (reallyDelete.exec() == QMessageBox::Ok) {
		wconf->remove(curWeaponsName);
		emit weaponsDeleted();
	}
}

void SelWeaponWidget::setWeaponsName(const QString& name)
{
	if(name != "" && wconf->contains(name)) {
		setWeapons(wconf->value(name).toString());
	}

	curWeaponsName = name;

	m_name->setText(name);
}

QStringList SelWeaponWidget::getWeaponNames() const
{
	return wconf->allKeys();
}