<?PHP
session_start();

include "includes/maps.php";
include "includes/db.inc.php";

include "includes/datas.php";

// encode array $json to JSON string

 
if ($_GET['act'] == "getmap") {
	$map = GenerateMapByCode($_GET['mapcode']);
	
	$solution = formSolution($_GET['solution']);
	
	$solvedmap = MergeMapSolution($map, $solution);
	if ($solvedmap == -1) {
		$json['error'][] = "INVALID WALL POSITIONS";
	}
	if ($solvedmap == -2) {
		$json['error'][] = "USED TOO MANY WALLS";
	}
}

if ($_GET['checkachieve'] == 'true' AND $_SESSION['accepted'] == 1) {
	$json['notification'] = true;
	
	$userID = $_SESSION['userID'];
	
	$sql = "UPDATE `achievements` 
		SET `level` = '0'
		WHERE `userID` = '$userID'";
		//mysql_query($sql);
	//Located in includes/datas.php
	$note = getNotified($userID);
	
	if ($note !== false)
		$json['notificationtext'] = $note;
	
	// $achieved = checkAchievements($userID);
	
	// if ($achieved['result']) {
		// $json['notificationtext'] = $achieved['text'];
	// }
}

if ($_GET['r'] == 'getscores') {
	$mapID = $_GET['mapid'] + 0;
	if (!is_int($mapID)) 
		return;
	$topscores = topScores($mapID, 30);
	$json['scores'] = $topscores;
	$encoded = json_encode($json);
	die($encoded);
}


if ($_GET['r'] == 'getsol') {
	$solid = $_GET['solutionid'] + 0;
	//echo "working...";
	if (!is_int($solid)) return;
	
	$sql = "SELECT `solution`, `mapID`
	FROM `solutions`
	WHERE
	`ID` = '$solid'
	LIMIT 1";
	
	$result = mysql_query($sql);
	if (mysql_num_rows($result) > 0) {
		list($json['solution'], $json['mapid']) = mysql_fetch_row($result);
		$encoded = json_encode($json);
		die($encoded);
	}
}



if ($_GET['r'] == 'getpath') {

	//Stage 1; Get the path.
	
	//Generate the map based on the code.
	$mapcode = $_GET['mapcode'];
	//$tmp = GenerateMapByCode($_GET['mapcode']);
	//Seperate any existing solution from map  (?depreciated?)
	//$tmp = seperateMapSolution($tmp);
	
	//!!!!
	//Join the partial-solution from the map, and the solution sent  (?Again, depreciated?)
	//$solution = formSolution($_GET['solution'].$tmp);
	
	$solution = $_GET['solution'];

	//valid mapID? 
	$mapID = $_GET[mapid] + 0;
	if (!is_int($mapID)) return;
	
	if ($mapID > 10) {
		$mapcode = getMapCode($mapID);
	} 
	
	//mygrid will be the map, with the solution applied.
	$map = GenerateMapByCode($mapcode);
	$mygrid = MergeMapSolution($map, $solution);
	
	//Route the path
	$json = routePath($mygrid, $start);
	
	$moves = $json['moves'];

	$json['mapid'] = $mapID;
	
	//What could go wrong?
	if ($json['blocked']) {
		//$json['error'][] = "blocked";
		$encoded = json_encode($json);
		die($encoded);
	}
	if ($mygrid == -1) {
		$json['error'][] = "INVALID WALL POSITIONS";
		$encoded = json_encode($json);
		die($encoded);
	}
	if ($mygrid[0][4] < 0) {
		$used = $mygrid[0][4] - $map[0][4];
		$json['error'][] = "Too many walls used. ".$used." of ".$map[0][4]." walls used.";
		$encoded = json_encode($json);
		die($encoded);
	}

	//Get current score data. - to see if a pertinent score was beat.
	$userID = $_SESSION['userID'];
	$sql = "SELECT `moves` as bestmoves, `displayName`, IFNULL(q1.mymoves, 0)
			FROM `solutions`, `users`
			LEFT JOIN (
				SELECT `moves` as mymoves
				FROM `solutions`
				WHERE `userID` = '$userID' AND
				`mapID` = '$mapID'
			) as q1 
			ON 1
			WHERE
			`mapID` = '$mapID' AND 
			`userID` = users.ID
			ORDER BY `moves` DESC, `dateModified` ASC
			LIMIT 1";
	$result = mysql_query($sql);
	if (mysql_num_rows($result) > 0) {
		list($bestMoves, $byName, $myMoves) = mysql_fetch_row($result);
		$json['best'] = $bestMoves;
		$json['bestby'] = $byName;
		$json['mybest'] = $myMoves;
	} else {
		$json['best'] = 0;
		$json['bestby'] = 'no one';
	}
	
	// --------- RUSH THE PATH BACK TO THE USER
	ignore_user_abort(true);
	$encoded = json_encode($json);
	header("Connection: close");
   header("Content-Length: " . mb_strlen($encoded));	
	echo $encoded;
	flush();
	
	// --------- CONTINUE EXECUTION
	
	
	// --------- USER NOT LOGGED IN
	if ($_SESSION['accepted'] !== 1) {
		if ($moves >= ($_SESSION[$mapID.'moves'] + 0)) {
			$_SESSION[$mapID.'moves'] = $moves;
			$_SESSION[$mapID.'sol'] = $solution;
		}
		return;
	}
	// --------- USER LOGGED IN
	
	
	//Challenge/Tutorial?
	//echo "pre";
	if ($mapID <= 10 AND $_GET['isChallenge'] = 'true') {
		//echo "running function".$_GET['challengeID'];
		applyChallengeAchievements($userID, $_GET['challengeID'], $mapID, $solution, $moves);
		return;
	}
	
	//Is the map still valid to score on?
	if (!isCurrentMap($mapID))
		return;

	// --------- UPDATE SCORES
	
	$checkcp = false;
	$checkcm = false;
	
	//Is there an existing record?
	if ($myMoves > 0) {
		if ($myMoves < $moves) {
			$sql = "UPDATE `solutions` 
			SET `moves` = '$moves'  	,
			`dateModified` = NOW()		,
			`solution` = '$solution'
			WHERE `userID` = '$userID' AND
			`mapID` = '$mapID'";
			mysql_query($sql);
			$checkcp = true;
		//Update the solution only, if it's the same score.
		} elseif ($myMoves == $moves) {
			$sql = "UPDATE `solutions` 
			SET `moves` = '$moves'  	,
			`solution` = '$solution'
			WHERE `userID` = '$userID' AND
			`mapID` = '$mapID'";
			mysql_query($sql);
			
		}
	//Create a new record.
	} else {
		$sql = "INSERT INTO `solutions` (`userID`, `mapID`, `solution`, `moves`)
		VALUES ('$userID', '$mapID', '$solution', '$moves')";
		mysql_query($sql);
		$checkcm = true;
	}
	
	// --------- APPLY ACHIEVEMENTS
	
	//while(applyCareerAchievement($userID)) {
	//	usleep(200);
	//}
	
	//if ($checkcm)
		applyCareerMazesAchievements($userID);
	//if ($checkcp)
		applyCareerPathAchievements($userID);
	
	//!! no need w/ rush-sending.
	$encoded = json_encode($json);
	echo $encoded;
	
	// --------- END
}


function isCurrentMap($mapID) {
	include_once('./includes/db.inc.php');
	$sql = "SELECT `ID` FROM `mapOfTheDay`
	WHERE `mapDate` = CURDATE() AND
		`mapID` = '$mapID'
	";
	$result = mysql_query($sql) or die(mysql_error());
	if (mysql_num_rows($result) == 0) 
		return false;
	else 
		return true;
}




//Very simple, confirm that all targets are reachable.
function ValidateMap($mygrid) {
	$start = "0,1.";
	$target[] = 'a';
	$target[] = 'b';
	$target[] = 'c';
	$target[] = 'f';
	$blocked = false;
	foreach($target as $t) {
		$p = Findpath ($mygrid, $start, $t);
		if ($p['blocked']) return false;
	}
	return true;
}



$json['error'][] = 'Division by 912 trillion!';
$json['error'][] = 'Cant count that high.';
 
$json['error'][] = "I forgot what I was doing!";
$json['error'][] = "Lost track of time, and gaveup!";

$encoded = json_encode($json);
die($encoded);



?>