siti-category-thumbnails/siti-category-thumbnails.php

<?php
/**
 * Plugin Name: Siti Category Thumbnails
 * Description: Sync product category thumbnails with the newest product image.
 * Version: 1.0.1
 * Author: Roberto Guagliardo | SitiWeb
 * Author URI: https://sitiweb.nl/
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if( ! class_exists( 'SitiWebUpdater2' ) ){
	include_once( plugin_dir_path( __FILE__ ) . 'includes/SitiWebUpdater2.php' );
}

$updater = new SitiWebUpdater2( __FILE__ );
$updater->set_owner( 'roberto' );
$updater->set_repository( 'siti-category-thumbnails' );
$updater->initialize();

final class Siti_Category_Thumbnails {
	const PAGE_SLUG = 'siti-category-thumbnails';

	public static function init() {
		add_action( 'admin_menu', array( __CLASS__, 'register_admin_page' ) );

		if ( defined( 'WP_CLI' ) && WP_CLI ) {
			WP_CLI::add_command( 'siti update-category-thumbnails', array( __CLASS__, 'cli_command' ) );
		}
	}

	public static function register_admin_page() {
		add_management_page(
			__( 'Category Thumbnails', 'livebetter' ),
			__( 'Category Thumbnails', 'livebetter' ),
			self::required_capability(),
			self::PAGE_SLUG,
			array( __CLASS__, 'render_admin_page' )
		);
	}

	public static function render_admin_page() {
		$capability = self::required_capability();
		if ( ! current_user_can( $capability ) ) {
			wp_die( esc_html__( 'Je hebt geen rechten om dit uit te voeren.', 'livebetter' ) );
		}

		$messages = array();
		$dry_run = false;

		if ( 'POST' === $_SERVER['REQUEST_METHOD'] && isset( $_POST['lb_category_thumbnails_nonce'] ) ) {
			check_admin_referer( 'lb_category_thumbnails_run', 'lb_category_thumbnails_nonce' );
			$dry_run = isset( $_POST['lb_dry_run'] );
			self::run_update(
				$dry_run,
				function ( $message ) use ( &$messages ) {
					$messages[] = $message;
				}
			);
		}

		?>
		<div class="wrap">
			<h1><?php esc_html_e( 'Categorie-afbeeldingen synchroniseren', 'livebetter' ); ?></h1>
			<p><?php esc_html_e( 'Deze actie zet per productcategorie de thumbnail op de meest recente productafbeelding.', 'livebetter' ); ?></p>

			<form method="post">
				<?php wp_nonce_field( 'lb_category_thumbnails_run', 'lb_category_thumbnails_nonce' ); ?>
				<p>
					<button type="submit" class="button button-primary" name="lb_run"><?php esc_html_e( 'Uitvoeren', 'livebetter' ); ?></button>
					<button type="submit" class="button" name="lb_dry_run"><?php esc_html_e( 'Dry-run', 'livebetter' ); ?></button>
				</p>
			</form>

			<?php if ( ! empty( $messages ) ) : ?>
				<h2><?php esc_html_e( 'Resultaat', 'livebetter' ); ?></h2>
				<pre style="background:#fff;border:1px solid #ccd0d4;padding:12px;max-height:420px;overflow:auto;"><?php echo esc_html( implode( "\n", $messages ) ); ?></pre>
			<?php elseif ( $dry_run ) : ?>
				<p><?php esc_html_e( 'Dry-run klaar.', 'livebetter' ); ?></p>
			<?php endif; ?>
		</div>
		<?php
	}

	public static function cli_command( $args, $assoc_args ) {
		$dry_run = ! empty( $assoc_args['dry-run'] );
		self::run_update(
			$dry_run,
			function ( $message ) {
				WP_CLI::log( $message );
			}
		);
		WP_CLI::success( 'Categorie-afbeeldingen gesynchroniseerd.' );
	}

	private static function run_update( $dry_run, callable $log ) {
		if ( function_exists( 'set_time_limit' ) ) {
			@set_time_limit( 0 );
		}

		$terms = get_terms(
			array(
				'taxonomy'   => 'product_cat',
				'hide_empty' => false,
			)
		);

		if ( is_wp_error( $terms ) || empty( $terms ) ) {
			$log( 'Geen categorieen gevonden.' );
			return;
		}

		$log( sprintf( 'Start update voor %d categorieen%s...', count( $terms ), $dry_run ? ' (dry-run)' : '' ) );

		foreach ( $terms as $term ) {
			$query = new WP_Query(
				array(
					'post_type'      => 'product',
					'posts_per_page' => 1,
					'post_status'    => 'publish',
					'orderby'        => 'date',
					'order'          => 'DESC',
					'fields'         => 'ids',
					'tax_query'      => array(
						array(
							'taxonomy' => 'product_cat',
							'field'    => 'term_id',
							'terms'    => $term->term_id,
						),
					),
					'meta_query'     => array(
						array(
							'key'     => '_thumbnail_id',
							'compare' => 'EXISTS',
						),
					),
					'no_found_rows'  => true,
				)
			);

			$latest_id = $query->posts[0] ?? 0;
			wp_reset_postdata();

			if ( ! $latest_id ) {
				$log( sprintf( 'Skip: %s - geen producten gevonden.', $term->name ) );
				continue;
			}

			$thumbnail_id = get_post_thumbnail_id( $latest_id );
			if ( ! $thumbnail_id ) {
				$log( sprintf( 'Skip: %s - product %d heeft geen uitgelichte afbeelding.', $term->name, $latest_id ) );
				continue;
			}

			if ( $dry_run ) {
				$log( sprintf( 'Dry-run: %s zou thumbnail %d krijgen (product %d).', $term->name, $thumbnail_id, $latest_id ) );
				continue;
			}

			update_term_meta( $term->term_id, 'thumbnail_id', $thumbnail_id );
			$log( sprintf( 'OK: %s bijgewerkt met afbeelding van product %d.', $term->name, $latest_id ) );
		}
	}

	private static function required_capability() {
		return current_user_can( 'manage_woocommerce' ) ? 'manage_woocommerce' : 'manage_options';
	}
}

Siti_Category_Thumbnails::init();