#include <math.h>
#include <QDebug>
#include "zoneviewzone.h"
#include "player.h"
#include "protocol_items.h"
#include "carddragitem.h"

ZoneViewZone::ZoneViewZone(Player *_p, CardZone *_origZone, int _numberCards, bool _revealZone, QGraphicsItem *parent)
	: SelectZone(_p, _origZone->getName(), false, false, true, parent, true), bRect(QRectF()), minRows(0), numberCards(_numberCards), origZone(_origZone), revealZone(_revealZone), sortByName(false), sortByType(false)
{
	if (!revealZone)
		origZone->setView(this);
}

ZoneViewZone::~ZoneViewZone()
{
	emit beingDeleted();
	qDebug("ZoneViewZone destructor");
	if (!revealZone)
		origZone->setView(NULL);
}

QRectF ZoneViewZone::boundingRect() const
{
	return bRect;
}

void ZoneViewZone::paint(QPainter */*painter*/, const QStyleOptionGraphicsItem */*option*/, QWidget */*widget*/)
{
}

void ZoneViewZone::initializeCards(const QList<ServerInfo_Card *> &cardList)
{
	if (!cardList.isEmpty()) {
		for (int i = 0; i < cardList.size(); ++i)
			addCard(new CardItem(player, cardList[i]->getName(), cardList[i]->getId(), revealZone, this), false, i);
		reorganizeCards();
	} else if (!origZone->contentsKnown()) {
		Command_DumpZone *command = new Command_DumpZone(-1, player->getId(), name, numberCards);
		connect(command, SIGNAL(finished(ProtocolResponse *)), this, SLOT(zoneDumpReceived(ProtocolResponse *)));
		player->sendGameCommand(command);
	} else {
		const CardList &c = origZone->getCards();
		int number = numberCards == -1 ? c.size() : (numberCards < c.size() ? numberCards : c.size());
		for (int i = 0; i < number; i++) {
			CardItem *card = c.at(i);
			addCard(new CardItem(player, card->getName(), card->getId(), revealZone, this), false, i);
		}
		reorganizeCards();
	}
}

void ZoneViewZone::zoneDumpReceived(ProtocolResponse *r)
{
	Response_DumpZone *resp = qobject_cast<Response_DumpZone *>(r);
	if (!resp)
		return;
	
	const QList<ServerInfo_Card *> &respCardList = resp->getZone()->getCardList();
	for (int i = 0; i < respCardList.size(); i++) {
		CardItem *card = new CardItem(player, respCardList[i]->getName(), respCardList[i]->getId(), revealZone, this);
		addCard(card, false, i);
	}
	
	reorganizeCards();
}

// Because of boundingRect(), this function must not be called before the zone was added to a scene.
void ZoneViewZone::reorganizeCards()
{
	int cardCount = cards.size();
	if (!origZone->contentsKnown())
		for (int i = 0; i < cardCount; ++i)
			cards[i]->setId(i);

	int cols = floor(sqrt((double) cardCount / 2));
	int rows = ceil((double) cardCount / cols);
	if (rows < 1)
		rows = 1;
	if (minRows == 0)
		minRows = rows;
	else if (rows < minRows) {
		rows = minRows;
		cols = ceil((double) cardCount / minRows);
	}
	if (cols < 2)
		cols = 2;
	
	qDebug() << "reorganizeCards: rows=" << rows << "cols=" << cols;

	CardList cardsToDisplay(cards);
	if (sortByName || sortByType)
		cardsToDisplay.sort((sortByName ? CardList::SortByName : 0) | (sortByType ? CardList::SortByType : 0));
	
	for (int i = 0; i < cardCount; i++) {
		CardItem *c = cardsToDisplay.at(i);
		qreal x = (i / rows) * CARD_WIDTH;
		qreal y = (i % rows) * CARD_HEIGHT / 3;
		c->setPos(x, y);
		c->setRealZValue(i);
	}

	optimumRect = QRectF(0, 0, cols * CARD_WIDTH, ((rows - 1) * CARD_HEIGHT) / 3 + CARD_HEIGHT);
	updateGeometry();
	emit optimumRectChanged();
}

void ZoneViewZone::setSortByName(int _sortByName)
{
	sortByName = _sortByName;
	reorganizeCards();
}

void ZoneViewZone::setSortByType(int _sortByType)
{
	sortByType = _sortByType;
	reorganizeCards();
}

void ZoneViewZone::addCardImpl(CardItem *card, int x, int /*y*/)
{
	cards.insert(x, card);
	card->setParentItem(this);
	card->update();
}

void ZoneViewZone::handleDropEvent(const QList<CardDragItem *> &dragItems, CardZone *startZone, const QPoint &/*dropPoint*/, bool /*faceDown*/)
{
	QList<CardId *> idList;
	for (int i = 0; i < dragItems.size(); ++i)
		idList.append(new CardId(dragItems[i]->getId()));
	
	player->sendGameCommand(new Command_MoveCard(-1, startZone->getName(), idList, player->getId(), getName(), 0, 0, false));
}

void ZoneViewZone::removeCard(int position)
{
	if (position >= cards.size())
		return;

	CardItem *card = cards.takeAt(position);
	card->deleteLater();
	reorganizeCards();
}

void ZoneViewZone::setGeometry(const QRectF &rect)
{
	prepareGeometryChange();
	setPos(rect.x(), rect.y());
	bRect = QRectF(0, 0, rect.width(), rect.height());
}

QSizeF ZoneViewZone::sizeHint(Qt::SizeHint /*which*/, const QSizeF & /*constraint*/) const
{
	return optimumRect.size();
}