<?php
defined( 'ABSPATH' ) || exit;

class WebStudio_Admin_Watch_404_Logger {
	public function register() {
		add_action( 'template_redirect', array( $this, 'maybe_record' ), 999 );
	}

	public function maybe_record() {
		if ( is_admin() || ! is_404() || wp_doing_ajax() || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) ) {
			return;
		}
		$settings = get_option( 'admin_watch_settings', array() );
		if ( empty( $settings['monitor_404s'] ) || empty( $_SERVER['REQUEST_URI'] ) ) {
			return;
		}
		// phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Validated below as a bounded, relative request path before storage.
		$uri = wp_unslash( $_SERVER['REQUEST_URI'] );
		if ( ! is_string( $uri ) || strlen( $uri ) > 2048 || 0 !== strpos( $uri, '/' ) || preg_match( '/[\x00-\x1F\x7F]/', $uri ) ) {
			return;
		}
		$parts = wp_parse_url( $uri );
		if ( false === $parts || empty( $parts['path'] ) ) {
			return;
		}
		// Fragments never reach a server; omit queries to reduce high-cardinality tracking.
		$path = '/' . ltrim( $parts['path'], '/' );
		$path = preg_replace( '#/+#', '/', $path );
		if ( empty( $path ) || strlen( $path ) > 1910 ) {
			return;
		}
		require_once ADMIN_WATCH_DIR . 'database/class-404-repository.php';
		(new WebStudio_Admin_Watch_404_Repository())->record( $path );
	}
}