[PHP]Funzione di calcolo prezzo di una camera in un range di date

namespace Domain;

class RoomCustomPriceDomain extends RootDomain
{
    private $id;
    private $roomId;
    private $createdDate;
    private $certainDate;
    private $price;
    private $rebate;

    public function __construct(
        $id,
        $roomId,
        $createdDate,
        $certainDate,
        $price,
        $rebate
    ){
        $this->id = $id;
        $this->roomId = $roomId;
        $this->createdDate = $createdDate;
        $this->certainDate = $certainDate;
        $this->price = $price;
        $this->rebate = $rebate;

    }

    public function setId($id)
    {
        $this->id = $id;
    }

    public function getId()
    {
        return $this->id;
    }

    public function setRoomId($roomId)
    {
        $this->roomId = $roomId;
    }

    public function getRoomId()
    {
        return $this->roomId;
    }

    public function setCreatedDate($createdDate)
    {
        $this->createdDate = $createdDate;
    }

    public function getCreatedDate()
    {
        return $this->createdDate;
    }

    public function setCertainDate($certainDate)
    {
        $this->certainDate = $certainDate;
    }

    public function getCertainDate()
    {
        return $this->certainDate;
    }

    public function setPrice($price)
    {
        $this->price = $price;
    }

    public function getPrice()
    {
        return $this->price;
    }
  
   public function setRebate($rebate)
    {
        $this->rebate = $rebate;
    }

    public function getRebate()
    {
        return $this->rebate;
    }
  
  
}

namespace DataSource;
use DateTime;
use Driver\MySQLi;
use Domain\RoomCustomPriceDomain;

class RoomCustomPriceDataSource extends RootDataSource
{
    public function instantiateRoomCustomPriceDomain(array $row)
    {
        $row['created_date'] = $this->getDateObject($row['created_date']);
        $row['certain_date'] = $this->getDateObject($row['certain_date']);
        $roomCustomPriceDomain = new RoomCustomPriceDomain(
            $row['id'],
            $row['room_id'],
            $row['created_date'],
            $row['certain_date'],
            $row['price'],
            $row['rebate']
        );

        return $roomCustomPriceDomain;
    }
    public function insert(array $roomCustomPriceDomainArray)
    {
        $statement = $this->mysqli->buildStatement('
            DELETE FROM  
                room_custom_price
            WHERE
                certain_date = :certainDate AND
                room_id = :roomId
        ');
        foreach ($roomCustomPriceDomainArray as $roomCustomPriceDomain) {
            $statement->execute(array(
                ':roomId' => $roomCustomPriceDomain->getRoomId(),
                ':certainDate' => $roomCustomPriceDomain->getCertainDate()->format('Y-m-d')
            ));
        }
        $statement->close();
      
        $statement = $this->mysqli->buildStatement('
            INSERT INTO
                room_custom_price
            VALUES(
                :id,
                :roomId,
                :createdDate,
                :certainDate,
                :price,
                :rebate
            )
        ');
        foreach ($roomCustomPriceDomainArray as $roomCustomPriceDomain) {
            $statement->execute(array(
                ':id' => $roomCustomPriceDomain->getId(),
                ':roomId' => $roomCustomPriceDomain->getRoomId(),
                ':createdDate' => $roomCustomPriceDomain->getCreatedDate()->format('Y-m-d H:i:s'),
                ':certainDate' => $roomCustomPriceDomain->getCertainDate()->format('Y-m-d'),
                ':price' => $roomCustomPriceDomain->getPrice(),
                ':rebate' => $roomCustomPriceDomain->getRebate()
            ));
        }
        $statement->close();
        return true;
    }

    public function delete(array $dataArray)
    {
        $statement = $this->mysqli->buildStatement('
            DELETE FROM
                room_custom_price
            WHERE
                room_id = :roomId AND
                certain_date = :certainDate
        ');
        foreach ($dataArray as $data) {
            $statement->execute(array(
                ':roomId' => $data['roomId'],
                ':certainDate' => $data['certainDate']
            ));
        }
        $statement->close();
    }
    public function getAllByRoomId($roomId, $now)
    {
        $certainDate = new DateTime($now->format('Y-m-d'));
        $startDate = $certainDate->modify('-1 month')->format('Y-m-17');
        $endDate = $certainDate->modify('+2 months')->format('Y-m-13');

        $statement = $this->mysqli->buildStatement('
            SELECT
                DATE_FORMAT(certain_date, \'%m-%d-%Y\') AS certain_date,
                price
            FROM
                room_custom_price
            WHERE
                room_id = :roomId AND
                (certain_date BETWEEN :startDate AND :endDate)
        ');
        $statement->execute(array(
            ':roomId' => $roomId,
            ':startDate' => $startDate,
            ':endDate' => $endDate
        ));
        $rows = $statement->fetchAllAssociative();
        $statement->close();

        return $rows;
    }
}