<?php 

class BlogPost extends \Timber\Post
{
    /**
     * Estimates time required to read a post.
     *
     * The words per minute are based on the English language, which e.g. is much
     * faster than German or French.
     *
     * @link https://www.irisreading.com/average-reading-speed-in-various-languages/
     *
     * @return string
     */
    
    public function reading_time()
    {
        $symb_per_minute = 2280;

        $symb = strlen(wp_strip_all_tags($this->content()));
        $minutes = round($symb / $symb_per_minute);

        /* translators: %s: Time duration in minute or minutes. */
        return sprintf(_n('%s ' . pll__('мин.'), '%s ' . pll__('мин.'), $minutes), (int) $minutes);
    }
    public function get_author_name()
    {
        if (get_field('post_author', $this->ID)){
            return get_the_title(get_field('post_author', $this->ID));
        }
        return false;
    }
    public function get_author_img()
    {
        $id = get_field('post_author', $this->ID);
        return get_the_post_thumbnail_url( $id, 'thumbnail' );
    }
}

add_filter('timber/post/classmap', function ($classmap) {
    $custom_classmap = [
        'post' => BlogPost::class,
    ];

    return array_merge($classmap, $custom_classmap);
});