<?php
/**
 * File: advanced-cache.php
 *
 * W3 Total Cache advanced cache module.
 *
 * @package W3TC
 */

defined( 'ABSPATH' ) || die();

global $w3tc_start_microtime;
$w3tc_start_microtime = microtime( true );

/*
 * Fast Page Cache — lecture Redis ultra-rapide AVANT WordPress.
 * Sert le HTML mis en cache en quelques ms si disponible.
 */
if ( ! defined( 'WP_INSTALLING' ) && ! defined( 'WP_ADMIN' )
     && ! defined( 'DOING_CRON' ) && ! defined( 'DOING_AJAX' )
     && extension_loaded( 'redis' )
     && ( $_SERVER['REQUEST_METHOD'] ?? 'GET' ) === 'GET' ) {

    $fpc_qs       = $_SERVER['QUERY_STRING'] ?? '';
    $fpc_bypass   = false;
    if ( $fpc_qs !== '' ) {
        parse_str( $fpc_qs, $fpc_params );
        foreach ( array_keys( $fpc_params ) as $fpc_k ) {
            if ( ! in_array( $fpc_k, [ 'aaeid', 'lang' ], true ) ) { $fpc_bypass = true; break; }
        }
    }
    if ( ! $fpc_bypass ) {
        foreach ( array_keys( $_COOKIE ) as $fpc_c ) {
            if ( str_starts_with( $fpc_c, 'wordpress_logged_in' ) ) { $fpc_bypass = true; break; }
        }
    }
    $fpc_uri = $_SERVER['REQUEST_URI'] ?? '/';
    if ( str_contains( $fpc_uri, 'wp-admin' ) || isset( $_GET['preview'] ) || isset( $_GET['elementor-preview'] ) ) {
        $fpc_bypass = true;
    }

    if ( ! $fpc_bypass ) {
        try {
            $fpc_r = new Redis();
            if ( $fpc_r->connect( '127.0.0.1', 6379, 1.0 ) ) {
                $fpc_r->select( 1 );
                $fpc_scheme = ( isset( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] !== 'off' ) ? 'https' : 'http';
                $fpc_key    = 'fpc:' . md5( $fpc_scheme . '://' . ( $_SERVER['HTTP_HOST'] ?? '' ) . strtok( $fpc_uri, '?' ) );
                $fpc_html   = $fpc_r->get( $fpc_key );
                if ( $fpc_html !== false ) {
                    header( 'Content-Type: text/html; charset=UTF-8' );
                    header( 'X-FPC-Cache: HIT' );
                    echo $fpc_html;
                    exit;
                }
            }
        } catch ( Exception $fpc_e ) { /* silent */ }
    }
    unset( $fpc_r, $fpc_html, $fpc_key, $fpc_bypass, $fpc_c, $fpc_k, $fpc_params, $fpc_qs, $fpc_uri, $fpc_scheme );
}

/**
 * Abort W3TC loading if WordPress is upgrading.
 */
if ( defined( 'WP_INSTALLING' ) && WP_INSTALLING ) {
	return;
}

if ( ! defined( 'W3TC_IN_MINIFY' ) ) {
	if ( ! defined( 'W3TC_DIR' ) ) {
		define( 'W3TC_DIR', ( defined( 'WP_PLUGIN_DIR' ) ? WP_PLUGIN_DIR : WP_CONTENT_DIR . '/plugins' ) . '/w3-total-cache' );
	}

	if ( ! @is_dir( W3TC_DIR ) || ! file_exists( W3TC_DIR . '/w3-total-cache-api.php' ) ) {
		if ( defined( 'WP_ADMIN' ) ) {
			// Only display errors in wp-admin.
			printf( '<strong>W3 Total Cache Error:</strong> some files appear to be missing or out of place. Please re-install plugin or remove <strong>%s</strong>. <br />', __FILE__ );
		}
	} else {
		require_once W3TC_DIR . '/w3-total-cache-api.php';

		if ( class_exists( '\W3TC\Dispatcher' ) ) {
			$w3tc_redirect = \W3TC\Dispatcher::component( 'Mobile_Redirect' );
			$w3tc_redirect->process();

			$w3tc_config = \W3TC\Dispatcher::config();
			if ( $w3tc_config->get_boolean( 'pgcache.enabled' ) ) {
				$o = \W3TC\Dispatcher::component( 'PgCache_ContentGrabber' );
				$o->process();
			}
		}
	}
}