#include "gameentry.h"
#include <stdio.h>
#include <string.h>
#include <arpa/inet.h>

#include "gameentry.h"

GameEntry::GameEntry(int gameid, NetPkt* pkt, int port2)
: port2(port2), gameid(gameid)
{
	memcpy(&addr, &pkt->getAddress()->sin_addr, sizeof(addr));
	this->port1 = pkt->getPort();

	if (port2 != 0) {
		this->port2 = this->port1;
		this->port1 = port2;
	}

	update();
}

int GameEntry::compare(const GameEntry* ge)
{
	if (this->addr.s_addr > ge->addr.s_addr)
		return -1;

	if (this->addr.s_addr < ge->addr.s_addr)
		return 1;

	if (this->port1 > ge->port1)
		return -1;

	if (this->port1 < ge->port1)
		return 1;

	// only compare IP:port
	// gameid and port2 are useless
	return 0;
}

int GameEntry::hash(int max)
{
	unsigned int hash = 0x12345678;

	// IP
	hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>0) & 0xFF);
	hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>8) & 0xFF);
	hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>16) & 0xFF);
	hash = ((hash<<5) ^ (hash>>27)) ^ ((addr.s_addr>>24) & 0xFF);

	// port
	hash = ((hash<<5) ^ (hash>>27)) ^ ((port1>>0) & 0xFF);
	hash = ((hash<<5) ^ (hash>>27)) ^ ((port1>>8) & 0xFF);

	return hash % max;
}

void GameEntry::update()
{
	modtime = time(NULL);
}

int GameEntry::show(char* buf, int size)
{
	return snprintf(buf, size, "(%2d:%15s:%5d:%5d)",
		this->gameid, inet_ntoa(this->addr),
		this->port1, this->port2);
}