oophp acf alternative

<?php

namespace Origin\Theme\Metaboxes;

class PageMetaBox extends \Origin\Framework\Objects\Metabox
{
    /**
     * A unique id/key for this Meta box.
     *
     * @var string
     */
    protected $unique = 'page-metabox';

    /**
     * The "name" or "title" of the Meta box.
     *
     * @var string
     */
    protected $title = 'Page';

    /**
     * The post types for this Meta box.
     *
     * @var array
     */
    protected $postTypes = ['page', 'locations'];

    /**
     * Register fields for this Meta box.
     *
     * @return array
     */
    protected function fields()
    {
        return [
            'main_cta' => [
                'label' => 'Main CTA button',
                'description' => 'Appears directly below the banner',
                'type' => 'group',
                'fields' => [
                    'maincta_link' => [
                        'label' => 'Button Link',
                        'type' => 'select',
                        'choices' => origin_get_pages([], false, '-- links to page --')
                    ],
                    'maincta_text' => [
                        'label' => 'Button Text',
                        'type' => 'text',
                    ]
                ]
            ],
            'contentarea' => [
                'label' => 'Content Area',
                'type' => 'repeater',
                'fields' => [
                    'contentarea_colour' => [
                        'label' => 'Content Area Colour',
                        'type' => 'select',
                        'choices' => [
                            '' => 'Select color...',
                            'band--tall' => 'White',
                            'band--primary' => 'Orange (primary brand colour)',
                            'band--secondary' => 'Dark Orange (secondary brand colour)',
                            'band--lightgray' => 'Light gray',
                            'band--darkgray' => 'Dark gray',
                        ]
                    ],
                    'contentarea_type' => [
                        'label' => 'What type should this Content Area be?',
                        'type' => 'select',
                        'choices' => [
                            '' => 'Please choose ...',
                            'content' => 'Content',
                            'priceguarantee' => 'Price Guarantee (widget area)',
                            'video' => 'Video',
                            'testimonials' => 'Testimonials',
                            'howitworks' => 'How it Works',
                            'news' => 'Recent News',
                            'resources' => 'Resources'
                        ]
                    ],
                    'content' => [
                        'label' => 'Content for Area - only displays if \'content\' is selected above',
                        'type' => 'editor',
                    ],
                    'video' => [
                        'label' => 'Video - please enter a video url',
                        'type' => 'text',
                    ]
                ]
            ]
        ];
    }
    /**
     * Allow filtering for where the metabox displays.
     *
     * @return boolean execute filter
     */
    public function __construct()
    {
        add_filter("origin_metabox_conditional_display_{$this->unique}", [$this, 'display']);

        parent::__construct();
    }

    /**
     * Conditional display of the current metabox. Return true to
     * display the metabox, and return false to hide the metabox.
     *
     * @return boolean
     */
    public function display()
    {
        // check if currentpage is a Sabai page..
        return get_the_ID() !== get_option(is_sabai());
    }
}