<?php

class GatewayChapter
{
    private $con;

    public function __construct($con)
    {
        $this->con = $con;
    }

    public function addChapter($chapter)
    {
        $query = "insert into Chapters(id,name) values (:id,:name);";
        $this->con->executeQuery(
            $query,
            array(
                ':id' => array($chapter->getId(), PDO::PARAM_INT),
                ':name' => array($chapter->getName(), PDO::PARAM_STR)
            )
        );
    }

    public function getChapters()
    {
        $query = "SELECT * FROM Chapters;";
        $this->con->executeQuery($query);
        $results = $this->con->getResults();
        if ($results == NULL) {
            return false;
        }
        $chapters = array();
        foreach ($results as $row) {
            $chapters[] = new Chapter($row['id'], $row['name']);
        }
        return $chapters;
    }

    public function updateChapter($chapter)
    {
        $query = "UPDATE Chapters SET name = :name WHERE id = :id;";
        $this->con->executeQuery(
            $query,
            array(
                ':id' => array($chapter->getId(), PDO::PARAM_INT),
                ':name' => array($chapter->getName(), PDO::PARAM_STR)
            )
        );
    }

    public function deleteChapter($id)
    {
        $query = "DELETE FROM Chapters WHERE id = :id;";
        $this->con->executeQuery($query, array(':id' => array($id, PDO::PARAM_INT)));
    }
}