<?php
/**
 * What this site is made of, read the same way every time: WordPress and PHP versions, the permalink pattern, and the
 * SEO plugin in charge. Studio reads it through the status route instead of guessing from the outside.
 *
 * @package GrowthCombinator
 */

namespace GrowthCombinator;

defined( 'ABSPATH' ) || exit;

final class Environment {

	/**
	 * SEO plugins Studio knows, by their WordPress.org folder slug.
	 */
	const SEO_PLUGINS = array(
		'seo-by-rank-math'    => 'rank-math',
		'wordpress-seo'       => 'yoast',
		'all-in-one-seo-pack' => 'aioseo',
		'wp-seopress'         => 'seopress',
		'autodescription'     => 'the-seo-framework',
	);

	/**
	 * Active plugins as `folder => [file, name, version]`, network-activated ones included.
	 *
	 * @return array<string, array{file: string, name: string, version: string}>
	 */
	public static function active_plugins() {
		if ( ! function_exists( 'get_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}
		$active = (array) get_option( 'active_plugins', array() );
		if ( is_multisite() ) {
			$active = array_merge( $active, array_keys( (array) get_site_option( 'active_sitewide_plugins', array() ) ) );
		}
		$all = get_plugins();
		$out = array();
		foreach ( array_unique( $active ) as $file ) {
			if ( ! isset( $all[ $file ] ) ) {
				continue;
			}
			$folder         = false === strpos( $file, '/' ) ? $file : dirname( $file );
			$out[ $folder ] = array(
				'file'    => $file,
				'name'    => $all[ $file ]['Name'],
				'version' => $all[ $file ]['Version'],
			);
		}
		return $out;
	}

	/**
	 * The active SEO plugins Studio knows. More than one is a misconfiguration worth showing, so all are listed.
	 *
	 * @return array<int, array{id: string, version: string}>
	 */
	public static function seo_plugins() {
		$out = array();
		foreach ( self::active_plugins() as $folder => $plugin ) {
			if ( isset( self::SEO_PLUGINS[ $folder ] ) ) {
				$out[] = array(
					'id'      => self::SEO_PLUGINS[ $folder ],
					'version' => $plugin['version'],
				);
			}
		}
		return $out;
	}

	/**
	 * The address settings Studio needs to know where a post will live.
	 *
	 * @return array{structure: string, category_base: string, tag_base: string, verbose_page_rules: bool}
	 */
	public static function permalinks() {
		global $wp_rewrite;
		return array(
			'structure'          => (string) get_option( 'permalink_structure', '' ),
			'category_base'      => (string) get_option( 'category_base', '' ),
			'tag_base'           => (string) get_option( 'tag_base', '' ),
			'verbose_page_rules' => (bool) ( $wp_rewrite && $wp_rewrite->use_verbose_page_rules ),
		);
	}
}