<?php

namespace WP_CLI\Bootstrap;

use WP_CLI;
use WP_CLI\Context;
use WP_CLI\ContextManager;

/**
 * Class InitializeContexts.
 *
 * @package WP_CLI\Bootstrap
 */
final class InitializeContexts implements BootstrapStep {

    /**
     * Process this single bootstrapping step.
     *
     * @param BootstrapState $state Contextual state to pass into the step.
     *
     * @return BootstrapState Modified state to pass to the next step.
     */
    public function process( BootstrapState $state ) {
        $context_manager = new ContextManager();

        $contexts = [
            Context::CLI      => new Context\Cli(),
            Context::ADMIN    => new Context\Admin(),
            Context::FRONTEND => new Context\Frontend(),
            Context::AUTO     => new Context\Auto( $context_manager ),
        ];

        $contexts = WP_CLI::do_hook( 'before_registering_contexts', $contexts );

        foreach ( $contexts as $name => $implementation ) {
            $context_manager->register_context( $name, $implementation );
        }

        $state->setValue( 'context_manager', $context_manager );

        return $state;
    }
}