<?php
/**
 * WordPress-native detection: active plugins and the WP Consent API cookie registry.
 *
 * @package AriConsent
 */

namespace AriConsent;

defined( 'ABSPATH' ) || exit;

/**
 * Knows which popular plugins add which tracking services, so a site is set up correctly
 * the moment AriConsent is activated, without crawling anything.
 */
final class Integrations {

	/**
	 * Plugin folder => service IDs it adds and a display name.
	 *
	 * @return array<string, array{name: string, services: string[]}>
	 */
	public static function known_plugins() {
		$map = array(
			'google-site-kit'                          => array( 'Site Kit by Google', array( 'google-analytics' ) ),
			'google-analytics-for-wordpress'           => array( 'MonsterInsights', array( 'google-analytics' ) ),
			'google-analytics-dashboard-for-wp'        => array( 'ExactMetrics', array( 'google-analytics' ) ),
			'ga-google-analytics'                      => array( 'GA Google Analytics', array( 'google-analytics' ) ),
			'woocommerce-google-analytics-integration' => array( 'Google Analytics for WooCommerce', array( 'google-analytics' ) ),
			'duracelltomi-google-tag-manager'          => array( 'GTM4WP', array( 'google-tag-manager' ) ),
			'pixelyoursite'                            => array( 'PixelYourSite', array( 'meta-pixel' ) ),
			'official-facebook-pixel'                  => array( 'Meta pixel for WordPress', array( 'meta-pixel' ) ),
			'facebook-for-woocommerce'                 => array( 'Facebook for WooCommerce', array( 'meta-pixel' ) ),
			'microsoft-clarity'                        => array( 'Microsoft Clarity', array( 'microsoft-clarity' ) ),
			'hotjar'                                   => array( 'Hotjar', array( 'hotjar' ) ),
			'pinterest-for-woocommerce'                => array( 'Pinterest for WooCommerce', array( 'pinterest-tag' ) ),
			'tiktok-for-business'                      => array( 'TikTok for WooCommerce', array( 'tiktok-pixel' ) ),
		);
		$out = array();
		foreach ( $map as $slug => $row ) {
			$out[ $slug ] = array(
				'name'     => $row[0],
				'services' => $row[1],
			);
		}

		/**
		 * Filters the plugin => service map.
		 *
		 * @param array $out Plugin folder => name and service IDs.
		 */
		return apply_filters( 'ariconsent_known_plugins', $out );
	}

	/**
	 * Service IDs suggested by active plugins, with the plugins that suggest them.
	 *
	 * @param string[]|null $active_plugins Plugin basenames (defaults to the site's active plugins).
	 * @return array<string, string[]> Service ID => plugin names.
	 */
	public static function detected( $active_plugins = null ) {
		if ( null === $active_plugins ) {
			$active_plugins = (array) get_option( 'active_plugins', array() );
			if ( is_multisite() ) {
				$active_plugins = array_merge( $active_plugins, array_keys( (array) get_site_option( 'active_sitewide_plugins', array() ) ) );
			}
		}
		$known = self::known_plugins();
		$out   = array();
		foreach ( $active_plugins as $basename ) {
			$slug = strtok( (string) $basename, '/' );
			if ( isset( $known[ $slug ] ) ) {
				foreach ( $known[ $slug ]['services'] as $service_id ) {
					$out[ $service_id ][] = $known[ $slug ]['name'];
				}
			}
		}
		return $out;
	}

	/**
	 * Cookies other plugins registered through the WP Consent API, mapped to our categories.
	 *
	 * @return array<int, array{name: string, plugin: string, category: string, expires: string, purpose: string}>
	 */
	public static function registered_cookies() {
		if ( ! function_exists( 'wp_get_cookie_info' ) ) {
			return array();
		}
		$map = array(
			'functional'           => 'necessary',
			'preferences'          => 'preferences',
			'statistics'           => 'statistics',
			'statistics-anonymous' => 'statistics',
			'marketing'            => 'marketing',
		);
		$out = array();
		foreach ( (array) wp_get_cookie_info() as $name => $info ) {
			if ( ! is_array( $info ) ) {
				continue;
			}
			$category = isset( $info['category'], $map[ $info['category'] ] ) ? $map[ $info['category'] ] : 'marketing';
			$out[]    = array(
				'name'     => (string) $name,
				'plugin'   => isset( $info['plugin_or_service'] ) ? (string) $info['plugin_or_service'] : '',
				'category' => $category,
				'expires'  => isset( $info['expires'] ) ? (string) $info['expires'] : '',
				'purpose'  => isset( $info['function'] ) ? (string) $info['function'] : '',
			);
		}
		return $out;
	}
}