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

/**
 * Site fingerprint (theme, plugins, builder, shop) and the compatibility rules
 * that follow from it. Rules come from the SaaS; a bundled fallback keeps the
 * engine safe while offline.
 */
class ZeroConfig_Compat {

	const CONFLICTING_PLUGINS = array(
		'wp-rocket/wp-rocket.php'               => 'WP Rocket',
		'litespeed-cache/litespeed-cache.php'   => 'LiteSpeed Cache',
		'w3-total-cache/w3-total-cache.php'     => 'W3 Total Cache',
		'wp-super-cache/wp-cache.php'           => 'WP Super Cache',
		'wp-fastest-cache/wpFastestCache.php'   => 'WP Fastest Cache',
		'autoptimize/autoptimize.php'           => 'Autoptimize',
		'wp-optimize/wp-optimize.php'           => 'WP-Optimize',
		'sg-cachepress/sg-cachepress.php'       => 'SiteGround Optimizer',
		'breeze/breeze.php'                     => 'Breeze',
		'cache-enabler/cache-enabler.php'       => 'Cache Enabler',
		'hummingbird-performance/wp-hummingbird.php' => 'Hummingbird',
		'nitropack/main.php'                    => 'NitroPack',
		'flying-press/flying-press.php'         => 'FlyingPress',
		'perfmatters/perfmatters.php'           => 'Perfmatters',
		'ewww-image-optimizer/ewww-image-optimizer.php' => 'EWWW Image Optimizer',
		'shortpixel-image-optimiser/wp-shortpixel.php'  => 'ShortPixel',
		'imagify/imagify.php'                   => 'Imagify',
		'webp-express/webp-express.php'         => 'WebP Express',
		'smush-pro/wp-smush.php'                => 'Smush Pro',
		'wp-smushit/wp-smush.php'               => 'Smush',
	);

	public static function fingerprint() {
		$theme   = wp_get_theme();
		$plugins = array();
		foreach ( (array) get_option( 'active_plugins', array() ) as $file ) {
			$plugins[] = dirname( $file ) === '.' ? basename( $file, '.php' ) : dirname( $file );
		}
		if ( is_multisite() ) {
			foreach ( array_keys( (array) get_site_option( 'active_sitewide_plugins', array() ) ) as $file ) {
				$plugins[] = dirname( $file ) === '.' ? basename( $file, '.php' ) : dirname( $file );
			}
		}
		$plugins = array_values( array_unique( $plugins ) );

		return array(
			'theme'       => $theme->get_stylesheet(),
			'parent'      => $theme->get_template(),
			'theme_ver'   => $theme->get( 'Version' ),
			'plugins'     => $plugins,
			'woocommerce' => class_exists( 'WooCommerce' ),
			'builder'     => self::builder( $plugins, $theme ),
			'multisite'   => is_multisite(),
			'wp'          => get_bloginfo( 'version' ),
			'php'         => PHP_VERSION,
			'server'      => isset( $_SERVER['SERVER_SOFTWARE'] ) ? substr( sanitize_text_field( wp_unslash( $_SERVER['SERVER_SOFTWARE'] ) ), 0, 40 ) : '',
			'conflicts'   => self::conflicts(),
		);
	}

	private static function builder( array $plugins, $theme ) {
		$map = array(
			'elementor'        => 'elementor',
			'beaver-builder-lite-version' => 'beaver',
			'bb-plugin'        => 'beaver',
			'js_composer'      => 'wpbakery',
			'bricks'           => 'bricks',
			'oxygen'           => 'oxygen',
			'breakdance'       => 'breakdance',
			'siteorigin-panels' => 'siteorigin',
		);
		foreach ( $map as $slug => $name ) {
			if ( in_array( $slug, $plugins, true ) ) {
				return $name;
			}
		}
		$tpl = strtolower( $theme->get_template() );
		if ( 'divi' === $tpl ) {
			return 'divi';
		}
		if ( 'avada' === $tpl ) {
			return 'avada';
		}
		if ( 'bricks' === $tpl ) {
			return 'bricks';
		}
		return 'none';
	}

	public static function conflicts() {
		$out = array();
		foreach ( self::CONFLICTING_PLUGINS as $file => $name ) {
			if ( zeroconfig_is_plugin_active( $file ) ) {
				$out[] = $name;
			}
		}
		return $out;
	}

	/**
	 * Bundled rules, used until the SaaS answers. Patterns are case-insensitive
	 * substrings matched against the asset URL.
	 */
	public static function fallback_rules() {
		return array(
			'version'      => 0,
			'js_exclude'   => array(
				'jquery.min.js', 'jquery.js', 'jquery-migrate', 'wp-includes/js/dist/', 'wp-polyfill',
				'revslider', 'rs6', 'layerslider', 'ls.', 'wc-add-to-cart', 'wc-cart-fragments', 'wc-checkout',
				'woocommerce.min.js', 'stripe.com', 'paypal.com', 'recaptcha', 'hcaptcha', 'cloudflare-static',
				'rocket-loader', 'wp-emoji', 'admin-bar', 'wp-admin/', 'swiper', 'slick', 'owl.carousel',
				'elementor-frontend', 'elementor-pro', 'bricks', 'oxygen', 'divi', 'et-core', 'frontend-builder',
				// consent managers must run before anything they gate
				'cookiebot', 'usercentrics', 'cookieyes', 'onetrust', 'cookielaw.org', 'otsdkstub', 'otbanner', 'iubenda', 'didomi', 'complianz', 'cmplz', 'borlabs', 'cookie-law-info', 'cookie-notice', 'termly', 'quantcast', 'consentmanager', 'osano', 'trustarc', 'truste', 'axeptio', 'tarteaucitron', 'klaro', 'moove_gdpr', 'gdpr-cookie-compliance', 'cookiefirst', 'cookie-script', 'cookiehub', 'real-cookie-banner', 'cookieinformation', 'consent-mode',
			),
			'delay_allow'  => array(
				'googletagmanager.com', 'google-analytics.com', 'gtag/js', 'connect.facebook.net', 'fbevents',
				'static.hotjar.com', 'clarity.ms', 'mc.yandex', 'ads.linkedin', 'snap.licdn', 'tiktok.com/i18n/pixel',
				'analytics.tiktok', 'pinimg.com/ct', 'px.ads', 'crisp.chat', 'intercom.io', 'tawk.to', 'widget.manychat',
				'embed.tawk', 'js.hs-scripts', 'hs-analytics', 'cdn.onesignal',
				'klaviyo', 'omnisend', 'mailchimp', 'drift.com', 'zdassets', 'livechatinc', 'olark',
			),
			// Never delayed even if a delay_allow pattern matches (consent must come before trackers).
			'delay_deny'   => array( 'cookiebot', 'usercentrics', 'cookieyes', 'onetrust', 'cookielaw.org', 'otsdkstub', 'otbanner', 'iubenda', 'didomi', 'complianz', 'cmplz', 'borlabs', 'cookie-law-info', 'cookie-notice', 'termly', 'quantcast', 'consentmanager', 'osano', 'trustarc', 'truste', 'axeptio', 'tarteaucitron', 'klaro', 'moove_gdpr', 'gdpr-cookie-compliance', 'cookiefirst', 'cookie-script', 'cookiehub', 'real-cookie-banner', 'cookieinformation', 'consent-mode' ),
			'css_exclude'  => array( 'admin-bar', 'dashicons', 'customize' ),
			'img_exclude'  => array( '.svg', '.gif', 'data:', 'gravatar.com', 'wp-admin/', 'captcha' ),
			'features_off' => array(),
			'critical_skip' => array( 'cart', 'checkout', 'my-account' ),
		);
	}

	/**
	 * Compatibility rules come from the service. Keep only the keys the plugin reads, each a list of
	 * short strings, so a malformed payload cannot reach the rewriter in an unexpected shape.
	 */
	public static function clean_rules( $rules ) {
		if ( ! is_array( $rules ) ) {
			return array();
		}
		$out = array();
		if ( isset( $rules['version'] ) && is_scalar( $rules['version'] ) ) {
			$out['version'] = (int) $rules['version'];
		}
		foreach ( array( 'js_exclude', 'delay_allow', 'delay_deny', 'css_exclude', 'img_exclude', 'critical_skip', 'features_off' ) as $k ) {
			if ( ! isset( $rules[ $k ] ) || ! is_array( $rules[ $k ] ) ) {
				continue;
			}
			$list = array();
			foreach ( $rules[ $k ] as $p ) {
				if ( is_string( $p ) && '' !== trim( $p ) && strlen( $p ) <= 200 ) {
					$list[] = $p;
				}
			}
			$out[ $k ] = array_slice( array_values( array_unique( $list ) ), 0, 500 );
		}
		return $out;
	}

	public static function rules() {
		$rules = ZeroConfig_Options::get( 'rules' );
		if ( empty( $rules ) || ! is_array( $rules ) || ! isset( $rules['js_exclude'] ) ) {
			return self::fallback_rules();
		}
		return array_merge( self::fallback_rules(), $rules );
	}

	public static function matches( $url, array $patterns ) {
		$url = strtolower( $url );
		foreach ( $patterns as $p ) {
			$p = strtolower( trim( (string) $p ) );
			if ( '' !== $p && false !== strpos( $url, $p ) ) {
				return true;
			}
		}
		return false;
	}
}

if ( ! function_exists( 'zeroconfig_is_plugin_active' ) ) {
	function zeroconfig_is_plugin_active( $file ) {
		if ( ! function_exists( 'is_plugin_active' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}
		return is_plugin_active( $file );
	}
}