<?php
/**
* Canonical Meta Data
*
* This file will handle functionality to print meta_data in frontend for different requests.
*
* @package surerank
* @since 0.0.1
*/
namespace SureRank\Inc\Frontend;
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly.
}
use SureRank\Inc\Traits\Get_Instance;
use WP_Term;
/**
* Canonical URL
* This class will handle functionality to print meta_data in frontend for different requests.
*
* @since 1.0.0
*/
class Canonical {
use Get_Instance;
/**
* Constructor
*
* @since 1.0.0
*/
public function __construct() {
remove_action( 'wp_head', 'rel_canonical' );
remove_action( 'wp_head', 'index_rel_link' );
add_action( 'surerank_print_meta', [ $this, 'print_canonical_url' ], 1, 1 );
}
/**
* Add meta data
*
* @param array<string, mixed> $meta_data Meta Data.
* @since 1.0.0
* @return void
*/
public function print_canonical_url( $meta_data ) {
$url = '';
if ( is_singular() ) {
$url = $meta_data['canonical_url'] ?? get_the_permalink();
}
if ( is_archive() ) {
$taxonomy = get_queried_object();
if ( $taxonomy instanceof \WP_Term ) {
$url = get_term_link( $taxonomy );
}
}
if ( is_home() || is_front_page() ) {
$url = $meta_data['canonical_url'] ?? get_home_url();
}
if ( ! is_404() ) {
if ( is_search() ) {
$url = get_search_link();
} elseif ( is_paged() && is_singular() ) {
$url = $meta_data['canonical_url'] ?? get_permalink();
} elseif ( is_paged() ) {
$url = $meta_data['canonical_url'] ?? get_pagenum_link( get_query_var( 'paged' ) );
} elseif ( is_tax() || is_category() || is_tag() ) {
$queried_object = get_queried_object();
$url = isset( $meta_data['canonical_url'] ) && ! empty( $meta_data['canonical_url'] )
? $meta_data['canonical_url']
: ( $queried_object instanceof WP_Term ? get_term_link( $queried_object ) : '' );
} else {
global $wp;
$url = $meta_data['canonical_url'] ?? user_trailingslashit( home_url( add_query_arg( [], $wp->request ) ) );
}
}
$this->print_canonical( $url );
}
/**
* Print the canonical url.
*
* @param string $url Canonical URL.
* @return void
* @since 1.0.0
*/
public function print_canonical( $url ) {
echo '<link rel="canonical" href="' . esc_url( $url ) . '">' . PHP_EOL;
}
}