Nord\Lumen\Search\Pagination

Complexity

Total Complexity

10

Size/Duplication

Total Lines	92
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Importance

Changes

0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	calculateOffset()	0	4	1
A	__construct()	0	5	1
A	getPageNumber()	0	4	1
A	getPageSize()	0	4	1
A	setPageNumber()	0	12	3
A	setPageSize()	0	12	3

<?php namespace Nord\Lumen\Search;

use Nord\Lumen\Search\Exceptions\InvalidArgument;

class Pagination
{
    const DEFAULT_PAGE_SIZE = 20;

    /**
     * @var int
     */
    private $pageNumber;

    /**
     * @var int
     */
    private $pageSize;


    /**
     * Pagination constructor.
     *
     * @param int $pageNumber
     * @param int $pageSize
     */
    public function __construct($pageNumber = 1, $pageSize = self::DEFAULT_PAGE_SIZE)
    {
        $this->setPageNumber($pageNumber);
        $this->setPageSize($pageSize);
    }


    /**
     * @return int
     */
    public function calculateOffset()
    {
        return ($this->pageNumber * $this->pageSize) - $this->pageSize;
    }


    /**
     * @return int
     */
    public function getPageNumber()
    {
        return $this->pageNumber;
    }


    /**
     * @return int
     */
    public function getPageSize()
    {
        return $this->pageSize;
    }


    /**
     * @param int $pageNumber
     *
     * @throws InvalidArgument
     */
    private function setPageNumber($pageNumber)
    {
        if (empty($pageNumber)) {
            throw new InvalidArgument('Pagination page number cannot be empty.');
        }

        if (!is_integer($pageNumber)) {
            throw new InvalidArgument('Pagination page number is malformed.');
        }

        $this->pageNumber = $pageNumber;
    }


    /**
     * @param int $pageSize
     *
     * @throws InvalidArgument
     */
    private function setPageSize($pageSize)
    {
        if (empty($pageSize)) {
            throw new InvalidArgument('Pagination page size cannot be empty.');
        }

        if (!is_integer($pageSize)) {
            throw new InvalidArgument('Pagination page size is malformed.');
        }

        $this->pageSize = $pageSize;
    }
}