<?php

namespace WP_CLI\Bootstrap;

/**
 * Class DefineProtectedCommands.
 *
 * Define the commands that are "protected", meaning that they shouldn't be able
 * to break due to extension code.
 *
 * @package WP_CLI\Bootstrap
 */
final class DefineProtectedCommands 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 ) {
        $commands        = $this->get_protected_commands();
        $current_command = $this->get_current_command();

        foreach ( $commands as $command ) {
            if ( 0 === strpos( $current_command, $command ) ) {
                $state->setValue( BootstrapState::IS_PROTECTED_COMMAND, true );
            }
        }

        return $state;
    }

    /**
     * Get the list of protected commands.
     *
     * @return array
     */
    private function get_protected_commands() {
        return [
            'cli info',
            'package',
        ];
    }

    /**
     * Get the current command as a string.
     *
     * @return string Current command to be executed.
     */
    private function get_current_command() {
        $runner = new RunnerInstance();

        return implode( ' ', (array) $runner()->arguments );
    }
}