<?php
/**
 * Public WooCommerce page addresses for external page checks.
 *
 * @package Keepwatch
 */

namespace Keepwatch\WooCommerce;

defined( 'ABSPATH' ) || exit;

/**
 * Shop, cart and checkout permalinks plus the newest published product, so the WPXLab cloud can check from outside
 * that the buying path works (paid cloud feature). These are public URLs only; nothing about customers or orders.
 */
final class Pages {

	/**
	 * Addresses, or null when WooCommerce is not active.
	 *
	 * @return array<string, string>|null
	 */
	public static function collect(): ?array {
		if ( ! Module::active() || ! function_exists( 'wc_get_page_permalink' ) ) {
			return null;
		}

		$pages = array();
		foreach ( array( 'shop', 'cart', 'checkout' ) as $kind ) {
			$pages[ $kind ] = (string) wc_get_page_permalink( $kind );
		}
		if ( function_exists( 'wc_get_products' ) ) {
			$products = wc_get_products(
				array(
					'status'     => 'publish',
					'visibility' => 'catalog',
					'limit'      => 1,
					'orderby'    => 'date',
					'order'      => 'DESC',
					'return'     => 'ids',
				)
			);
			if ( is_array( $products ) && isset( $products[0] ) ) {
				$pages['product'] = (string) get_permalink( (int) $products[0] );
			}
		}

		return self::clean( $pages, (string) home_url( '/' ) );
	}

	/**
	 * Pure filtering: drops empty values and pages that fall back to the home page (page not set up).
	 *
	 * @param array<string, string> $pages Kind => URL.
	 * @param string                $home  Home URL.
	 * @return array<string, string>
	 */
	public static function clean( array $pages, string $home ): array {
		$out = array();
		foreach ( $pages as $kind => $url ) {
			if ( '' !== $url && untrailingslashit( $url ) !== untrailingslashit( $home ) && 0 === strpos( $url, 'http' ) ) {
				$out[ $kind ] = substr( $url, 0, 500 );
			}
		}
		return $out;
	}
}