JNews || Limit the frontend submit "Add Media" button for Authors to "Insert from URL" only

<?php
/**
 * Limit the frontend submit "Add Media" button for Authors to "Insert from URL" only.
 */

if ( ! function_exists( 'my_jnews_fs_author_url_only' ) ) {
    /**
     * Check whether the current user has the Author role.
     *
     * @return bool True when the current user is an Author, otherwise false.
     */
    function my_jnews_fs_author_url_only() {
        if ( ! is_user_logged_in() ) {
            return false;
        }

        $user = wp_get_current_user();

        return $user instanceof WP_User && in_array( 'author', (array) $user->roles, true );
    }
}

if ( ! function_exists( 'my_jnews_fs_is_editor_page' ) ) {
    /**
     * Check whether the current page is the JNews frontend submit editor.
     *
     * @return bool True when the current page is the frontend editor, otherwise false.
     */
    function my_jnews_fs_is_editor_page() {
        if ( ! class_exists( 'JNews_Frontend_Endpoint' ) ) {
            return false;
        }

        global $wp;

        $endpoint = JNews_Frontend_Endpoint::getInstance()->get_endpoint();

        return isset( $endpoint['editor']['slug'], $wp->query_vars[ $endpoint['editor']['slug'] ] );
    }
}

/**
 * Keep only the "Insert from URL" tab inside the WordPress media popup.
 */
add_filter(
    'media_upload_tabs',
    function ( $tabs ) {
        if ( ! my_jnews_fs_author_url_only() ) {
            return $tabs;
        }

        global $pagenow;

        if ( 'media-upload.php' !== $pagenow ) {
            return $tabs;
        }

        $referer = wp_get_referer();

        if ( ! $referer || false === strpos( $referer, '/editor/' ) ) {
            return $tabs;
        }

        return array(
            'type_url' => __( 'Insert from URL', 'jnews' ),
        );
    }
);

/**
 * Force the media popup to load the "Insert from URL" tab for Authors.
 */
add_action(
    'admin_init',
    function () {
        if ( ! my_jnews_fs_author_url_only() ) {
            return;
        }

        global $pagenow;

        if ( 'media-upload.php' !== $pagenow ) {
            return;
        }

        $referer = wp_get_referer();

        if ( ! $referer || false === strpos( $referer, '/editor/' ) ) {
            return;
        }

        $_REQUEST['tab'] = 'type_url';
        $_GET['tab']     = 'type_url';
    },
    1
);

/**
 * Load Thickbox assets because the frontend editor uses the classic WordPress media popup.
 */
add_action(
    'wp_enqueue_scripts',
    function () {
        if ( ! my_jnews_fs_author_url_only() || ! my_jnews_fs_is_editor_page() ) {
            return;
        }

        add_thickbox();
    },
    20
);

/**
 * Override the "Add Media" button so it opens the URL-only media popup.
 */
add_action(
    'wp_footer',
    function () {
        if ( ! my_jnews_fs_author_url_only() || ! my_jnews_fs_is_editor_page() ) {
            return;
        }
        $media_upload_url = add_query_arg(
            array(
                'post_id'    => 0,
                'TB_iframe'  => 'true',
                'width'      => 640,
                'height'     => 517,
                'tab'        => 'type_url',
            ),
            admin_url( 'media-upload.php' )
        );
        ?>
        <script>
            (function($){
                "use strict";

                $(function () {
                    var $button = $('#insert-media-button');
                    var customUrl = <?php echo wp_json_encode( $media_upload_url ); ?>;

                    // Stop if the editor button is not available.
                    if (!$button.length) {
                        return;
                    }

                    // Remove the default WordPress media behavior from this button.
                    $button.removeAttr('data-editor data-wp-media');
                    $button.off('click');

                    // Open the URL-only popup instead of the normal media uploader.
                    $button.on('click.jnewsUrlOnly', function (event) {
                        event.preventDefault();

                        if (typeof window.tb_show === 'function') {
                            window.tb_show('<?php echo esc_js( __( 'Insert from URL', 'jnews' ) ); ?>', customUrl);
                        }

                        return false;
                    });
                });
            })(jQuery);
        </script>
        <?php
    },
    99
);