<?php
// phpcs:disable WordPress.Security.ValidatedSanitizedInput.MissingUnslash, WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Request metadata is used only for routing/cache-key/compatibility comparisons and is never rendered or persisted without later normalization.
namespace QWSpeedCache\Cache;

defined( 'ABSPATH' ) || exit;

/**
 * Runtime page-cache status for admin bar / diagnostics (N-05).
 */
class Status {

	/** @var array{status:string,reason:string} */
	private static $last = array(
		'status' => '',
		'reason' => '',
	);

	/**
	 * @param string $status HIT|MISS|BYPASS|HIT-EARLY|OFF.
	 * @param string $reason Reason code.
	 */
	public static function set( $status, $reason = '' ) {
		self::$last = array(
			'status' => strtoupper( (string) $status ),
			'reason' => preg_replace( '/[^a-z0-9_\-]/i', '', (string) $reason ),
		);
	}

	/**
	 * @return array{status:string,reason:string}
	 */
	public static function get() {
		return self::$last;
	}

	/**
	 * Human label for admin bar.
	 *
	 * @param string $reason Code.
	 * @return string
	 */
	public static function reason_label( $reason ) {
		$map = array(
			'ok'             => 'eligible',
			'hit'            => 'served from disk',
			'method'         => 'non-GET',
			'admin'          => 'wp-admin',
			'feed'           => 'feed',
			'preview'        => 'preview',
			'donotcachepage' => 'DONOTCACHEPAGE',
			'ajax'           => 'AJAX',
			'rest'           => 'REST',
			'password'       => 'password post',
			'signup'         => 'signup',
			'uri'            => 'excluded URI',
			'cart_cookie'    => 'cart/session cookie',
			'logged_in'      => 'logged-in',
			'cookie'         => 'sensitive cookie',
			'comment_cookie' => 'comment cookie',
			'query'          => 'rejected query arg',
			'ua'             => 'rejected user-agent',
			'disabled'       => 'page cache off',
			'private'        => 'private response',
			'miss'           => 'not in cache',
			'no_file'        => 'no cache file',
		);
		$reason = (string) $reason;
		return isset( $map[ $reason ] ) ? $map[ $reason ] : $reason;
	}

	/**
	 * Whether the main query has run (conditional tags like is_singular() are valid).
	 * Before the `wp` action they always return false and WordPress logs a notice.
	 *
	 * @return bool
	 */
	public static function query_ready() {
		return function_exists( 'did_action' ) && did_action( 'wp' ) > 0;
	}

	/**
	 * Build args for SafetyPolicy from current request (best-effort).
	 *
	 * @param array $settings Settings.
	 * @return array
	 */
	public static function current_request_args( array $settings ) {
		$raw_uri = isset( $_SERVER['REQUEST_URI'] ) && is_string( $_SERVER['REQUEST_URI'] ) ? wp_unslash( $_SERVER['REQUEST_URI'] ) : '/';
		$uri = sanitize_text_field( $raw_uri );
		if ( '/' !== substr( $uri, 0, 1 ) || strlen( $uri ) > 8192 ) {
			$uri = '/';
		}
		return array(
			'method'             => isset( $_SERVER['REQUEST_METHOD'] ) && is_string( $_SERVER['REQUEST_METHOD'] ) ? strtoupper( sanitize_key( wp_unslash( $_SERVER['REQUEST_METHOD'] ) ) ) : 'GET',
			'uri'                => $uri,
			'cookies'            => isset( $_COOKIE ) && is_array( $_COOKIE ) ? $_COOKIE : array(),
			'is_admin'           => is_admin(),
			'is_logged_in'       => is_user_logged_in(),
			'is_preview'         => \QWSpeedCache\Cache\Status::query_ready() && function_exists( 'is_preview' ) && is_preview(),
			'is_feed'            => \QWSpeedCache\Cache\Status::query_ready() && function_exists( 'is_feed' ) && is_feed(),
			'doing_ajax'         => function_exists( 'wp_doing_ajax' ) && wp_doing_ajax(),
			'rest_request'       => defined( 'REST_REQUEST' ) && REST_REQUEST,
			'donotcachepage'     => defined( 'DONOTCACHEPAGE' ) && DONOTCACHEPAGE,
			'has_post_password'  => \QWSpeedCache\Cache\Status::query_ready() && function_exists( 'is_singular' ) && is_singular() && post_password_required(),
			'is_multisite_signup'=> false,
		);
	}
}