web/app/model/Cardreader.php

<?php

use App\Core\Database;
use App\Teamtable\Team;
use App\Teamtable\TeamMapper;
use App\Timetable\Time;
use App\Timetable\TimeMapper;

class Cardreader
{
    public PDO $dbh;

    public TeamMapper $teamMapper;

    public TimeMapper $timeMapper;

    public function __construct(Database $database)
    {
        $this->dbh = $database->conn;
        $this->teamMapper = new TeamMapper($this->dbh);
        $this->timeMapper = new TimeMapper($this->dbh);
    }

    /**
     * Returns: 
     * 0 created team
     * 1 started counting
     * 2 counted round 
     * 3 counted too fast
     */
    public function receive(string $cardnumber, int $timeout): int 
    {
        $team = $this->teamMapper->getByCardnumber($cardnumber);
        if ($team)
        {
            // team exists, insert into time table
            // and update team table best time
            $prev_time = $this->timeMapper->getLatestByTeamId($team->id);

            $new_time = new Time;
            $new_time->setTeamId($team->id);
            // TODO: have this happen later so that it does not count when timeout
            $new_time = $this->timeMapper->create($new_time);

            // calculate best time for this team
            if ($prev_time !== NULL)
            {
                $diff = $new_time->date->getTimestamp() - $prev_time->date->getTimestamp();

                if ($diff <= $timeout)
                {
                    return 3;
                }

                if ($team->bestTime === NULL)
                {
                    $team->bestTime = $diff;
                    $this->teamMapper->update($team);
                }
                
                if ($diff < $team->bestTime)
                {
                    $team->bestTime = $diff;
                    $this->teamMapper->update($team);
                }
                return 2;
            }
            return 1;
        }

        // team does not exist, lets create it
        $team = new Team;
        $team->setCardnumber($cardnumber);
        $this->teamMapper->create($team);
        return 0;
    }
}