<?php

namespace WP_CLI\Bootstrap;

use WP_CLI;

/**
 * Class IncludePackageAutoloader.
 *
 * Loads the package autoloader that includes all the external packages.
 *
 * @package WP_CLI\Bootstrap
 */
final class IncludePackageAutoloader extends AutoloaderStep {

    /**
     * Get the autoloader paths to scan for an autoloader.
     *
     * @return string[]|false Array of strings with autoloader paths, or false
     *                        to skip.
     */
    protected function get_autoloader_paths() {
        if ( $this->state->getValue( BootstrapState::IS_PROTECTED_COMMAND, false ) ) {
            return false;
        }

        $runner        = new RunnerInstance();
        $skip_packages = $runner()->config['skip-packages'];
        if ( true === $skip_packages ) {
            WP_CLI::debug( 'Skipped loading packages.', 'bootstrap' );

            return false;
        }

        $autoloader_path = $runner()->get_packages_dir_path() . 'vendor/autoload.php';

        if ( is_readable( $autoloader_path ) ) {
            WP_CLI::debug(
                'Loading packages from: ' . $autoloader_path,
                'bootstrap'
            );

            return [
                $autoloader_path,
            ];
        }

        return false;
    }

    /**
     * Handle the failure to find an autoloader.
     *
     * @return void
     */
    protected function handle_failure() {
        WP_CLI::debug( 'No package autoload found to load.', 'bootstrap' );
    }
}