<?php
/**
 * Created by PhpStorm.
 * User: leanderschmedemann
 * Date: 10.04.17
 * Time: 13:24
 */

require_once('includes.inc.php');
$data = array();
$error = 0;
$cid = isset($_GET['category']) ? $_GET['category'] : -1;
$limit = isset($_GET['limit']) ? $_GET['limit'] : 10;
$offset = isset($_GET['offset']) ? $_GET['offset'] : 0;
$db = new Database();

if($cid == -1) {
    $overview = $db->query('SELECT "name", "highscore" FROM "Users" ORDER BY "highscore" DESC
      LIMIT $1 OFFSET $2', array($limit, $offset))['data'];
    foreach($overview as $row) {
        $name = $row['name'];
        $score = $row['highscore'];
        $place = $db->query('SELECT COUNT(*) FROM "Users" WHERE "highscore" > $1', array($score))['data'][0]['count'] + 1;
        $data[] = array('place' => $place, 'name' => $name, 'score' => $score);
    }
} else {
    $overview = $db->query('SELECT u."name", h."score" ISNULL(h."score", -1)
        FROM "Users" u LEFT OUTER JOIN "Highscores" h ON u."ID" = h."Users_ID"
        WHERE h."Categories_ID" = $1
        ORDER BY h."score" DESC
        LIMIT $2 OFFSET $3', array($cid, $limit, $offset))['data'];
    foreach($overview as $row) {
        $name = $row['name'];
        //$score = ($row['score'] == NULL) ? -1 : $row['score'];
        $place = $db->query('SELECT COUNT(*) FROM "Highscores" WHERE "score" > $1 AND "Categories_ID" = $2',
                array($score, $cid))['data'][0]['count'] + 1;
        $data[] = array('place' => $place, 'name' => $name, 'score' => $score);
    }
    /*
    $all_cat_highscores = $db->query('SELECT COUNT(*) FROM "Highscores" WHERE "Categories_ID" = $1', array($cid))
        ['data'][0]['count'];
    $all_users = $db->query('SELECT "ID", "name" FROM "Users" ORDER BY "name"')['data'];
    foreach($all_users as $user) {
        if($db->query('SELECT EXISTS (SELECT * FROM "Highscores" WHERE "Users_ID" = $1 AND "Categories_ID" = $2)',
                array($user['ID'], $cid))['data'][0]['exists'] == 'f') {
            $name = $user['name'];
            $score = -1;
            $place = $all_cat_highscores + 1;
            $data[] = array('place' => $place, 'name' => $name, 'score' => $score);
        }
    }*/
}

$response = Database::create_response($data, $error);
print_r($response);