<?php

namespace Cli;

use Psr\Log\LoggerAwareTrait;
use Psr\Log\LoggerInterface;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Class CommandTrait
 * @package Cli\Import
 * @mixin Command
 */
trait CommandTrait
{
    use LoggerAwareTrait;

    /**
     * @var InputInterface
     */
    protected $input;

    /**
     * @var OutputInterface
     */
    protected $output;

    protected $statistics = [];

    public function setLogger(LoggerInterface $logger)
    {
        $this->logger = $logger;
        return $this;
    }

    public function getLogger()
    {
        if (null === $this->logger) {
            $this->logger = new Logger();
        }
        return $this->logger;
    }

    public function showStatistics()
    {
        if ($this->output->isQuiet()) {
            return $this;
        }
        $this->getLogger()->setPrefix('');
        $parts = [];
        foreach ($this->statistics as $field => $value) {
            if ($value) {
                $parts[] = $value . ' - ' . $field;
            }
        }
        if ($parts) {
            $message = 'Summary: ' . implode(', ', $parts) . '.';
            $this->getLogger()->info($message);
        }
        return $this;
    }
}