<?php

class Period {
    public function Period($data) {
        $this->id = $data["id"];
        $this->start = strtotime($data["start"]);
        $this->end = strtotime($data["end"]);
        $this->host = $data["host"];
    }
}

function getLastQuizzPeriod() {
    require_once("./.htconfig.php");
    $dblink = getlink();
    $result = array();
    $userCountPerChan = $dblink->prepare("SELECT * FROM `knackizz_period` ORDER BY `id` DESC LIMIT 1");
    $userCountPerChan->execute();
    if ($row = $userCountPerChan->fetch(PDO::FETCH_ASSOC))
        return new Period($row);
    return null;
}

function getCurrentOrLastQuizzPeriod($periodId)
{
    if ($periodId == null)
        return getLastQuizzPeriod();
    require_once("./.htconfig.php");
    $dblink = getlink();
    $result = array();
    $userCountPerChan = $dblink->prepare("SELECT * FROM `knackizz_period` WHERE `id`=:id");
    $userCountPerChan->execute([ "id" => $periodId ]);
    if ($row = $userCountPerChan->fetch(PDO::FETCH_ASSOC))
        return new Period($row);
    return getLastQuizzPeriod();
}

function getPreviousQuizzPeriod($periodId) {
    require_once("./.htconfig.php");
    $dblink = getlink();
    $result = array();
    $userCountPerChan = $dblink->prepare("SELECT * FROM `knackizz_period` WHERE `id` < :id ORDER BY `id` DESC LIMIT 1");
    $userCountPerChan->execute([ "id" => $periodId ]);
    if ($row = $userCountPerChan->fetch(PDO::FETCH_ASSOC))
        return new Period($row);
    return null;
}

function getNextQuizzPeriod($periodId) {
    require_once("./.htconfig.php");
    $dblink = getlink();
    $result = array();
    $userCountPerChan = $dblink->prepare("SELECT * FROM `knackizz_period` WHERE `id` > :id ORDER BY `id` DESC LIMIT 1");
    $userCountPerChan->execute([ "id" => $periodId ]);
    if ($row = $userCountPerChan->fetch(PDO::FETCH_ASSOC))
        return new Period($row);
    return null;
}

function getQuizzScores($periodId) {
    $result = [];
    require_once("./.htconfig.php");
    $dblink = getlink();
    $result = array();
    $userCountPerChan = $dblink->prepare("SELECT * FROM `knackizz_scores` WHERE `period_id`=:pid ORDER BY `score` DESC");
    $userCountPerChan->execute([ "pid" => $periodId ]);
    $i = 0;
    while ($row = $userCountPerChan->fetch(PDO::FETCH_ASSOC))
        $result[] = array(
            "rank" => ++$i,
            "pseudo" => $row["pseudo"],
            "score" => $row["score"]
        );
    return $result;
}

?>