[SmartCrawl Pro] - Add custom OG meta tags

wpmudev-smartcrawl-customer-og-meta-tag.php

<?php
/**
 * Plugin Name: [SmartCrawl Pro] - Add custom OG meta tags
 * Plugin URI: https://premium.wpmudev.org/
 * Description: Removing existing OG meta tags with custom ones (as of 2.6.1)
 * Author: Alessandro Kaounas @ WPMUDEV
 * Author URI: https://premium.wpmudev.org/
 * Task: SLS-96
 * License: GPLv2 or later
*/

add_action( 'template_redirect', function(){

    // Return if not on home page.
    if( ! is_home() || ! is_front_page() ){
        return;
    }

    $latest_post = wp_get_recent_posts(
        array(
            'numberposts' => 1,
            'post_status' => 'publish'
        )
    );

    if( ! $latest_post ){
        return;
    }
    
    if( ! class_exists( 'Smartcrawl_OpenGraph_Printer' ) ) {
        return;
    }
    
    // Get SmartCrawl instance
    $og_print = Smartcrawl_OpenGraph_Printer::get();
    
    // Remove any existing OG meta tags
    remove_action( 'wp_head', array( $og_print, 'dispatch_og_tags_injection' ), 50 );
    remove_action( 'wds_head-after_output', array( $og_print, 'dispatch_og_tags_injection' ) );
    
    // Add custom OG tags via 'print_og_tag' method
    add_action( 'wp_head', function() use ( $og_print, $latest_post ){
        // Add your own below
        $og_print->print_og_tag( 'og:type', get_post_type( $latest_post ) );
        $og_print->print_og_tag( 'og:title', get_the_title( $latest_post ) );
    });

});