pressbooks-aldine/app/controllers/App.php

<?php

namespace Aldine;

use Sober\Controller\Controller;

class App extends Controller
{
    public function siteLogo()
    {
        $custom_logo_id = get_theme_mod('custom_logo');
        if (has_custom_logo()) {
            return wp_get_attachment_image($custom_logo_id, 'original');
        } else {
            return file_get_contents(get_theme_file_path() . '/dist/' . asset_dir('images/logo.svg'));
        }
    }



    public static function networkFooter($index)
    {
        if ($index === 2) {
            if (get_option('pb_network_facebook')
                || get_option('pb_network_twitter')
                || is_active_sidebar("network-footer-block-$index")
            ) {
                return $index;
            } else {
                return 'empty';
            }
        }
        return (is_active_sidebar("network-footer-block-$index")) ?
            $index :
            'empty';
    }

    public static function title()
    {
        if (is_home()) {
            if ($home = get_option('page_for_posts', true)) {
                return get_the_title($home);
            }
            return __('Latest Posts', 'aldine');
        }
        if (is_archive()) {
            return get_the_archive_title();
        }
        if (is_search()) {
            return sprintf(__('Search Results for %s', 'aldine'), get_search_query());
        }
        if (is_404()) {
            return __('Not Found', 'aldine');
        }
        return get_the_title();
    }



    public function currentPage()
    {
        if (is_front_page()) {
            return (get_query_var('page')) ? get_query_var('page') : 1;
        } else {
            return (get_query_var('paged')) ? get_query_var('paged') : 1;
        }
    }

    public function currentSubject()
    {
        return (get_query_var('subject')) ? get_query_var('subject') : '';
    }

    public function currentLicense()
    {
        return (get_query_var('license')) ? get_query_var('license') : '';
    }

    public function currentOrderBy()
    {
        return (get_query_var('orderby')) ? get_query_var('orderby') : 'title';
    }

    public function previousPage()
    {
        if (is_front_page()) {
            $page = (get_query_var('page')) ? get_query_var('page') : 1;
        } else {
            $page = (get_query_var('paged')) ? get_query_var('paged') : 1;
        }

        return ($page > 1) ? $page - 1 : 0;
    }

    public function nextPage()
    {
        if (is_front_page()) {
            $page = (get_query_var('page')) ? get_query_var('page') : 1;
        } else {
            $page = (get_query_var('paged')) ? get_query_var('paged') : 1;
        }

        return $page + 1;
    }
}