ntentan\honam\engines\php\helpers\PaginationHelper

Complexity

Total Complexity

16

Size/Duplication

Total Lines	87
Duplicated Lines	0 %

Test Coverage

Coverage

72.72%

Importance

Changes	1
Bugs	0	Features	0

3 Methods

Rating	Name	Duplication	Size	Complexity
B	__toString()	0	46	9
A	help()	0	9	3
A	getLink()	0	14	4

<?php
/**
 * Common utilities file for the Ntentan framework. This file contains a
 * collection of utility static methods which are used accross the framework.
 *
 * Ntentan Framework
 * Copyright (c) 2008-2014 James Ekow Abaka Ainooson
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * @author James Ainooson <jainooson@gmail.com>
 * @copyright Copyright 2014 James Ekow Abaka Ainooson
 * @license MIT
 */

namespace ntentan\honam\engines\php\helpers;

use ntentan\honam\engines\php\Helper;
use ntentan\utils\Input;

class PaginationHelper extends Helper
{
    private $parameters = [
        'query' => null,
        'number_of_links' => 21,
        'number_of_items' => null,
        'items_per_page' => 10,
        'base_url' => null,
        'page_number' => 1
    ];

    private $halfNumberOfLinks;

    public function help($params = [])
    {
        $this->parameters = array_merge($this->parameters, $params);
        $this->parameters['number_of_pages'] = ceil($this->parameters['number_of_items'] / $this->parameters['items_per_page']);
        $this->halfNumberOfLinks = ceil($this->parameters['number_of_links'] / 2);
        if ($this->parameters['query'] != '') {
            $this->parameters['page_number'] = Input::get($this->parameters['query']) == '' ? 1 : Input::get($this->parameters['query']);
        }
        return $this;
    }


    private function getLink($index)
    {
        if ($this->parameters['query'] == '') {
            $link = $this->parameters['base_url'] . $index;
        } else {
            $link = $this->parameters['base_url'] . '?';
            $get = Input::get();
            foreach ($get as $key => $value) {
                if ($key == $this->parameters['query']) continue;
                $link .= "$key=" . urlencode($value) . '&';
            }
            $link .= "{$this->parameters['query']}=$index";
        }
        return $link;
    }

    public function __toString()
    {
        $pagingLinks = array();
        if ($this->parameters['page_number'] > 1) {
            $pagingLinks[] = array(
                "link" => $this->getLink($this->parameters['page_number'] - 1),
                "label" => "Prev",
                "selected" => false
            );
        }

        if ($this->parameters['number_of_pages'] <= $this->parameters['number_of_links'] || $this->parameters['page_number'] < $this->halfNumberOfLinks) {
            for ($i = 1; $i <= ($this->parameters['number_of_pages'] > $this->parameters['number_of_links'] ? $this->parameters['number_of_links'] : $this->parameters['number_of_pages']); $i++) {

                $pagingLinks[] = array(
                    "link" => $this->getLink($i),
                    "label" => "$i",
                    "selected" => $this->parameters['page_number'] == $i
                );
            }
        } else {
            if ($this->parameters['number_of_pages'] - $this->parameters['page_number'] < $this->halfNumberOfLinks) {
                $startOffset = $this->parameters['page_number'] - (($this->parameters['number_of_links'] - 1) - ($this->parameters['number_of_pages'] - $this->parameters['page_number']));
                $endOffset = $this->parameters['page_number'] + ($this->parameters['number_of_pages'] - $this->parameters['page_number']);
            } else {
                $startOffset = $this->parameters['page_number'] - ($this->halfNumberOfLinks - 1);
                $endOffset = $this->parameters['page_number'] + ($this->halfNumberOfLinks - 1);
            }
            for ($i = $startOffset; $i <= $endOffset; $i++) {
                $pagingLinks[] = array(
                    "link" => $this->getLink($i),
                    "label" => "$i",
                    "selected" => $this->parameters['page_number'] == $i
                );
            }
        }

        if ($this->parameters['page_number'] < $this->parameters['number_of_pages']) {
            $pagingLinks[] = array(
                "link" => $this->getLink($this->parameters['page_number'] + 1),
                "label" => "Next",
                "selected" => false
            );
        }

        return $this->templateRenderer->render("links.tpl.php", array('links' => $pagingLinks));
    }
}