<?php
defined('BASEPATH') or exit('No direct script access allowed');

function initPagination($pagePerItem, $totalItems, $selectedPage, $onPageClicked)
{
    $CI = &get_instance();
    $totalPage = ceil($totalItems / $pagePerItem);
    $startPage = 1;
    $endPage = $totalPage;

    if ($selectedPage > 5) {
        $startPage = $selectedPage - 4;
    } else {
        $startPage = 1;
    }

    if (($selectedPage + 4) < $totalPage) {
        $endPage = $selectedPage + 4;
    } else {
        $endPage = $totalPage;
    }

    if ($endPage < 10) {
        $endPage = $totalPage < 10 ? $totalPage : 10;
    }

    $pagiantionData['pagePerItem'] = $pagePerItem;
    $paginationData['totalItems'] = $totalItems;
    $paginationData['totalPage'] = $totalPage;
    $paginationData['selectedPage'] = $selectedPage;
    $paginationData['startPage'] = $startPage;
    $paginationData['endPage'] = $endPage;

    if (strpos($onPageClicked, '?')) {
        $onPageClicked = $onPageClicked . "&";
    } else {
        $onPageClicked = $onPageClicked . "?";
    }

    $paginationData['handlePagingUrl'] = $onPageClicked;

    return $CI->load->view('shared/pagination', $paginationData, true);
}