<?php

class Quizes {

    private $_dbAdapter;
    private $_table;

    public function __construct() {
        $this->_dbAdapter = new MySQL();
        $this->_table = TABLE_PREFIX . 'quizes';
    }

    public function addQuiz($subjectID, $title) {
        $insert = $this->_dbAdapter->runQuery('INSERT INTO ' . $this->_table . '
		(subject,title,date_added)
		VALUES ("' . $subjectID . '", "' . $title . '", "' . time() . '")');

        return $this->_dbAdapter->getLastInsertedID();
    }

    public function getQuizes($whereClause = '') {
        if ($whereClause != '') {
            $select = $this->_dbAdapter->runQuery('SELECT * FROM ' . $this->_table . '
                WHERE ' . $whereClause);
        } else {
            $select = $this->_dbAdapter->runQuery('SELECT * FROM ' . $this->_table);
        }

        if ($this->_dbAdapter->countRows($select) > 0) {
            while ($row = $this->_dbAdapter->fetchRows($select)) {
                $data[] = $row;
            }

            return $data;
        }
    }

    public function getQuiz($whereClause = '') {
        if ($whereClause != '') {
            $select = $this->_dbAdapter->runQuery('SELECT * FROM ' . $this->_table . '
                WHERE ' . $whereClause);
        }

        if ($this->_dbAdapter->countRows($select) > 0) {
            return $this->_dbAdapter->fetchRows($select);
        }
    }

}