ogre-sort/inc/class-settings.php

<?php
/**
 * @package ogre-sort
 * @author cleverogre
 * @version 1.0.0
 * @since 1.0.0
 */

namespace Ogre\Sort;

use Ogre\Singleton;
use Ogre\Sort as Plugin;

defined('ABSPATH') || exit;

final class Settings {
    use Singleton;

    const CAPABILITY = 'manage_options';

    protected function __construct() {
        add_filter('ogre_sort_relationships', [$this, 'register_relationships'], 10, 1);
        add_action('admin_menu', [$this, 'menu']);
        add_action('admin_init', [$this, 'init']);
    }

    public function register_relationships(array $relationships):array {
        // Post Types
        foreach ($this->get('post_types') as $post_type) {
            $relationships[] = ['post_type' => $post_type];
        }

        // Taxonomies
        foreach ($this->get('taxonomies') as $taxonomy) {
            $relationships[] = ['taxonomy' => $taxonomy];
        }

        // Taxonomy Posts
        foreach ($this->get('taxonomy_post_types') as $key) {
            $parts = explode('~', $key);
            if (count($parts) == 2) {
                $relationships = [
                    'post_type' => $parts[0],
                    'taxonomy' => $parts[1],
                ];
            }
        }

        return $relationships;
    }

    private function get(string $key = ''):array {
        $data = (array) get_option(Plugin::get_id(), []);
        if (!empty($key)) return array_key_exists($key, $data) ? (array) $data[$key] : [];
        return $data;
    }

    private function is_checked(string $name, string $value):bool {
        return is_array($option = $this->get($name)) && in_array($value, $option);
    }

    public function menu() {
        if (!current_user_can(self::CAPABILITY)) return;

        add_options_page(sprintf(Plugin::__('%s Settings'), Plugin::get_title()), Plugin::get_title(), self::CAPABILITY, Plugin::get_id(), [$this, 'page']);
    }

    public function init() {
        register_setting('options', Plugin::get_id());

        add_settings_section('post_types', Plugin::__('Post Types'), [$this, 'section'], Plugin::get_id());

        foreach (get_post_types(output: 'objects') as $post_type) {
            add_settings_field(
                Plugin::get_id() . '_post_type_' . $post_type->name,
                $post_type->label,
                [$this, 'checkbox'],
                Plugin::get_id(),
                'post_types',
                [
                    'name' => 'post_types',
                    'value' => $post_type->name,
                ]
            );
        }

        add_settings_section('taxonomies', Plugin::__('Taxonomies'), [$this, 'section'], Plugin::get_id());

        foreach (get_taxonomies(output: 'objects') as $taxonomy) {
            add_settings_field(
                Plugin::get_id() . '_taxonomy_' . $post_type->name,
                $post_type->label,
                [$this, 'checkbox'],
                Plugin::get_id(),
                'taxonomies',
                [
                    'name' => 'taxonomies',
                    'value' => $taxonomy->name,
                ]
            );
        }

        add_settings_section('taxonomy_post_types', Plugin::__('Taxonomy Posts'), [$this, 'section'], Plugin::get_id());

        foreach (get_post_types(output: 'objects') as $post_type) {
            foreach (get_object_taxonomies($post_type->name, 'objects') as $taxonomy) {
                add_settings_field(
                    Plugin::get_id() . '_post_type_' . $post_type->name . '_taxonomy_' . $taxonomy->name,
                    sprintf('%s: %s', $post_type->label, $taxonomy->label),
                    [$this, 'checkbox'],
                    Plugin::get_id(),
                    'taxonomy_post_types',
                    [
                        'name' => 'taxonomy_post_types',
                        'value' => $post_type->name . '~' . $taxonomy->name,
                    ]
                );
            }
        }
    }

    public function page() {
        if (!current_user_can(self::CAPABILITY)) return;

        // Show update message
        if (isset($_GET['settings-updated'])) add_settings_error(Plugin::get_id(), 'updated', Plugin::__('Settings Saved'), 'updated');

        // Show error/update messages
        settings_errors(Plugin::get_id());
?>
<div class="wrap">
    <h1><?php echo esc_html(get_admin_page_title()); ?></h1>
    <form action="options.php" method="post"><?php
        settings_fields(Plugin::get_id());
        do_settings_sections(Plugin::get_id());
        submit_button();
    ?></form>
</div>
<?php
    }

    public function section():void { }

    public function field(array $args):void {
        extract($args);
        printf(
            '<input type="checkbox" name="%s[]" value="%s" %s>',
            esc_attr($name),
            esc_attr($value),
            checked($this->is_checked($name, $value), display: false)
        );
    }

    public static function get_url():string {
        return admin_url('options-general.php?page=' . Plugin::get_id());
    }

}

Settings::instance();