Cli.php

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<?php

namespace Elgg;

use Elgg\Cli\Application as CliApplication;
use Elgg\Cli\BaseCommand;
use Exception;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

class Cli {

    use Loggable;

    protected $console;

    protected $hooks;

    protected $input;

    protected $output;

    public function __construct(
        CliApplication $console,
        PluginHooksService $hooks,
        InputInterface $input,
        OutputInterface $output
    ) {
        $this->console = $console;
        $this->hooks = $hooks;
        $this->input = $input;
        $this->output = $output;
    }

    protected function bootstrap() {
        $commands = $this->hooks->trigger('commands', 'cli', null, []);

        foreach ($commands as $command) {
            $this->add($command);
        }
    }

    public function add($command) {
        if (!class_exists($command)) {
            return;
        }

        if (!is_subclass_of($command, BaseCommand::class)) {
            return;
        }

        $command = new $command();
        /* @var $command BaseCommand */

        if ($this->logger) {
            $command->setLogger($this->logger);
        }

        $command->addOption('as', 'u', InputOption::VALUE_OPTIONAL,
            'Execute the command on behalf of a user with the given username'
        );

        $this->console->add($command);
    }

    public function run() {
        $this->bootstrap();
        $this->console->run($this->input, $this->output);
    }

    public function getInput() {
        return $this->input;
    }

    public function getOutput() {
        return $this->output;
    }
}