<?php

declare(strict_types=1);

namespace FlexatechTableReservations\Support;

defined( 'ABSPATH' ) || exit;

/**
 * Simple per-key fixed-window rate limiter backed by transients. Used to throttle
 * public booking submissions per IP.
 */
final class RateLimiter {

	/**
	 * Record a hit and report whether the key has exceeded $max within $window
	 * seconds. Returns true when the request should be blocked.
	 */
	public static function exceeded( string $key, int $max, int $window ): bool {
		$bucket = 'fxtr_rl_' . md5( $key );
		$count  = (int) get_transient( $bucket );

		if ( $count >= $max ) {
			return true;
		}

		set_transient( $bucket, $count + 1, $window );

		return false;
	}
}