<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Service class for discovering the active Epic Forms add-ons.
 */
class Epicformbuilder_Services_Addons {

	/**
	 * Returns the active add-ons, keyed by plugin directory name.
	 *
	 * Both the admin and the public bootstrap payload use this to tell the
	 * frontend which add-on bundles to load, so an add-on missing from this
	 * list is an add-on whose fields and actions never appear in the browser.
	 *
	 * On multisite an add-on can be active in two different places: per site in
	 * the `active_plugins` option, or for the whole network in the
	 * `active_sitewide_plugins` network option. Reading only the former hides
	 * every network activated add-on.
	 *
	 * @since 1.0.0
	 *
	 * @return array<string, array{name: string, url: string}> Active add-ons.
	 */
	public static function get_active(): array {
		$plugin_files = (array) get_option( 'active_plugins', [] );

		if ( is_multisite() ) {
			// Network activations are stored as plugin file => activation time.
			$plugin_files = array_merge(
				$plugin_files,
				array_keys( (array) get_site_option( 'active_sitewide_plugins', [] ) )
			);
		}

		$addons = [];

		foreach ( array_unique( $plugin_files ) as $plugin_file ) {
			// Entries in both options are active by definition, so we only need
			// the epicforms-* prefix check here. Avoid is_plugin_active(): it
			// lives in wp-admin/includes/plugin.php and is undefined in the
			// REST context, causing a fatal.
			if ( 0 !== strpos( $plugin_file, 'epicforms-' ) ) {
				continue;
			}

			$name = explode( '/', $plugin_file )[0];
			$url  = plugins_url( '/dist/main.js', WP_PLUGIN_DIR . '/' . $plugin_file );

			// dist/main.js is the one add-on file without a content hash in its
			// name, so version it by mtime: otherwise browsers keep running the
			// old entry (and its old chunk references) after an add-on update.
			$mtime = @filemtime( WP_PLUGIN_DIR . '/' . $name . '/dist/main.js' ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged -- a missing build is not an error here.

			$addons[ $name ] = [
				'name' => $name,
				'url'  => false !== $mtime ? add_query_arg( 'ver', $mtime, $url ) : $url,
			];
		}

		return $addons;
	}
}