<?php
/*
 * Minequery PHP
 * Copyright (C) 2011 Kramer Campbell
 *
 * 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

/**
 * The Minequery PHP class.
 */
class Minequery {
	/**
	 * Queries a Minequery server.
	 *
	 * @static
	 * @param string $address The address to the Minequery server.
	 * @param int $port The port of the Minequery server.
	 * @param int $timeout The time given before the connection attempt gives up.
	 * @return array|bool An array on success, FALSE on failure.
	 */
	public static function query($address, $port = 25566, $timeout = 30) {
		$query = array();

		$beginning_time = microtime(true);

		$socket = @fsockopen($address, $port, $errno, $errstr, $timeout);

		if (!$socket) {
			// Could not establish a connection to the server.
			return false;
		}

		$end_time = microtime(true);

		fwrite($socket, "QUERY\n");

		$response = "";
		
		while(!feof($socket)) {
			$response .= fgets($socket, 1024);
		}

		$response = explode("\n", $response);

		// Server port
		$query['serverPort'] = explode(" ", $response[0], 2);
		$query['serverPort'] = $query['serverPort'][1];

		// Player count
		$query['playerCount'] = explode(" ", $response[1], 2);
		$query['playerCount'] = $query['playerCount'][1];

		// Max players
		$query['maxPlayers'] = explode(" ", $response[2], 2);
		$query['maxPlayers'] = $query['maxPlayers'][1];

		// Player list
		$query['playerList'] = explode(" ", $response[3], 2);
		$query['playerList'] = explode(", ", trim($query['playerList'][1], "[]"));

		$query['latency'] = ($end_time - $beginning_time) * 1000;

		return $query;
	}

	/**
	 * Queries a Minequery server using JSON.
	 *
	 * @static
	 * @param string $address The address to the Minequery server.
	 * @param int $port The port of the Minequery server.
	 * @param int $timeout The time given before the connection attempt gives up.
	 * @return object|bool A stdClass object on success, FALSE on failure.
	 */
	public static function query_json($address, $port = 25566, $timeout = 30) {
		$beginning_time = microtime(true);

		$socket = @fsockopen($address, $port, $errno, $errstr, $timeout);

		if (!$socket) {
			// Could not establish a connection to the server.
			return false;
		}

		$end_time = microtime(true);

		fwrite($socket, "QUERY_JSON\n");

		$response = "";

		while(!feof($socket)) {
			$response .= fgets($socket, 1024);
		}

		$query = json_decode($response);
		$query->latency = ($end_time - $beginning_time) * 1000;

		return $query;
	}
}
