functions.php

<?php

add_action( 'after_setup_theme', 'wpdocs_theme_setup' );

function wpdocs_theme_setup() {
	load_theme_textdomain( 'legalizebelarus', get_template_directory() . '/languages' );
}

require_once( 'bs4navwalker.php' );

register_nav_menu( 'top', 'Top menu' );

function themebs_enqueue_styles() {

	wp_enqueue_style( 'bootstrap', get_template_directory_uri() . '/css/bootstrap.min.css' );
	wp_enqueue_style( 'core', get_template_directory_uri() . '/style.css' );

}

add_action( 'wp_enqueue_scripts', 'themebs_enqueue_styles' );

function themebs_enqueue_scripts() {
	wp_enqueue_script( 'bootstrap', get_template_directory_uri() . '/js/bootstrap.bundle.min.js', array( 'jquery' ) );
}

add_action( 'wp_enqueue_scripts', 'themebs_enqueue_scripts' );

add_theme_support( 'post-thumbnails', array( 'post', 'page' ) );

function set_default_meta( $post_ID ) {
	$post_meta_labels = array( "author", "custom_license", "disable_thumbnail", "custom_license_image" );

	$default_metas = array( "Legalize Belarus", "0", "0", "0");

	for ( $i = 0; $i <= count( $post_meta_labels ); $i ++ ) {
		$current_field_value = get_post_meta( $post_ID, $post_meta_labels[ $i ], true );
		$default_meta        = $default_metas[ $i ];

		if ( $current_field_value == '' && ! wp_is_post_revision( $post_ID ) ) {
			add_post_meta( $post_ID, $post_meta_labels[ $i ], $default_meta, true );
		}
	}

	return $post_ID;
}

add_action( 'wp_insert_post', 'set_default_meta' );


function getPostViews( $postID ) {
	$count_key = 'post_views_count';
	$count     = get_post_meta( $postID, $count_key, true );
	if ( $count == '' ) {
		delete_post_meta( $postID, $count_key );
		add_post_meta( $postID, $count_key, '0' );

		return "0";
	}

	return $count;
}

function setPostViews( $postID ) {
	$count_key = 'post_views_count';
	$count     = get_post_meta( $postID, $count_key, true );
	if ( $count == '' ) {
		$count = 0;
		delete_post_meta( $postID, $count_key );
		add_post_meta( $postID, $count_key, '0' );
	} else {
		$count ++;
		update_post_meta( $postID, $count_key, $count );
	}
}

if ( function_exists( 'register_sidebar' ) ) {
	register_sidebar( array(
			'name'          => 'posts-sidebar',
			'before_widget' => '
<div class="widgetizedArea py-1">',
			'after_widget'  => '
</div>',
			'before_title'  => '<h3>',
			'after_title'   => '</h3>',
		)
	);
}

if ( function_exists( 'register_sidebar' ) ) {
	register_sidebar( array(
			'name'          => 'main-sidebar',
			'before_widget' => '
<div class="widgetizedArea py-1">',
			'after_widget'  => '
</div>',
			'before_title'  => '<h3>',
			'after_title'   => '</h3>',
		)
	);
}


add_filter( 'widget_text', 'shortcode_unautop' );
add_filter( 'widget_text', 'do_shortcode' );


function limit_posts_per_archive_page() {
	if ( is_category() ) {
		$limit = 5;
	} elseif ( is_search() ) {
		$limit = 5;
	} else {
		$limit = get_option( 'posts_per_page' );
	}

	set_query_var( 'posts_per_archive_page', $limit );
}

add_filter( 'pre_get_posts', 'limit_posts_per_archive_page' );


function filter_pre_handle_404( $preempt, $wp_query ) {
	if ( isset( $wp_query->query['page'] ) && $wp_query->query['page'] ) {
		return true;
	}

	return $preempt;
}

add_filter( 'pre_handle_404', 'filter_pre_handle_404', 10, 2 );


function aj_modify_posts_per_page( $query ) {
	if ( $query->is_search() ) {
		$query->set( 'posts_per_page', '25' );
	}
}

add_action( 'pre_get_posts', 'aj_modify_posts_per_page' );

add_post_type_support( 'page', 'excerpt' );

?>