add custom sponsored post shortcode

add_shortcode( 'custom_jnews_sponsored', 'custom_jnews_sponsored' );

function custom_jnews_sponsored() {
    $post_id = get_the_ID();
    $output  = '';
    if ( $post_id && function_exists( 'jnews_get_metabox_value' ) ) {
        $flag = jnews_get_metabox_value( 'jnews_single_post.sponsored_post', null, $post_id );
        if ( $flag ) {
            $label = jnews_get_metabox_value( 'jnews_single_post.sponsored_post_label', null, $post_id );
            $name  = jnews_get_metabox_value( 'jnews_single_post.sponsored_post_name', null, $post_id );
            $desc  = jnews_get_metabox_value( 'jnews_single_post.sponsored_post_desc', '', $post_id );
            $url   = jnews_get_metabox_value( 'jnews_single_post.sponsored_post_url', null, $post_id );

            $logo_show = jnews_get_metabox_value( 'jnews_single_post.sponsored_post_logo_enable', null, $post_id );
            $logo      = jnews_get_metabox_value( 'jnews_single_post.sponsored_post_logo', null, $post_id );

            if ( $logo_show ) {
                if ( $logo ) {
                    $logo     = wp_get_attachment_image_src( $logo, 'full' );
                    $logo_url = isset( $logo[0] ) ? $logo[0] : '';
                    $alt      = empty( $name ) ? '' : 'alt="' . $name . '"';
                    $sponsor  = '<img src="' . $logo_url . '" ' . $alt . '>';
                }
            } else {
                $sponsor = '<strong>' . $name . '</strong>';
            }

            if ( $label ) {
                $label = '<span class="sponsor-label">' . $label . '</span>';
            }

            $output =
            '<div class="jeg_meta_sponsor">
                    ' . $label . '
                    <a class="sponsor-logo" href="' . $url . '" target="_blank" rel="sponsored">
                        ' . $sponsor . '
                    </a>
                    <p>' . wp_kses( $desc, 'post' ) . '</p>
                </div>';
        }
    }

    return $output;
}