<?php

/*

 * This file is part of the Monolog package.

 *

 * (c) Jordi Boggiano <j.boggiano@seld.be>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Monolog\Formatter;

use Monolog\Logger;

/**

 * Formats incoming records into a one-line string

 *

 * This is especially useful for logging to files

 *

 * @author Jordi Boggiano <j.boggiano@seld.be>

 * @author Christophe Coevoet <stof@notk.org>

 */

class LineFormatter implements FormatterInterface

{

    const SIMPLE_FORMAT = "[%datetime%] %channel%.%level_name%: %message% %context% %extra%\n";

    const SIMPLE_DATE = "Y-m-d H:i:s";

    protected $format;

    protected $dateFormat;

    /**

     * @param string $format The format of the message

     * @param string $dateFormat The format of the timestamp: one supported by DateTime::format

     */

    public function __construct($format = null, $dateFormat = null)

    {

        $this->format = $format ?: static::SIMPLE_FORMAT;

        $this->dateFormat = $dateFormat ?: static::SIMPLE_DATE;

    }

    /**

     * {@inheritdoc}

     */

    public function format(array $record)

    {

        $vars = $record;

        $vars['datetime'] = $vars['datetime']->format($this->dateFormat);

        $output = $this->format;

        foreach ($vars['extra'] as $var => $val) {

            if (false !== strpos($output, '%extra.'.$var.'%')) {

                $output = str_replace('%extra.'.$var.'%', $this->convertToString($val), $output);

                unset($vars['extra'][$var]);

            }

        }

        foreach ($vars as $var => $val) {

            $output = str_replace('%'.$var.'%', $this->convertToString($val), $output);

        }

        return $output;

    }

    public function formatBatch(array $records)

    {

        $message = '';

        foreach ($records as $record) {

            $message .= $this->format($record);

        }

        return $message;

    }

    protected function convertToString($data)

    {

        if (null === $data || is_scalar($data)) {

            return (string) $data;

        }

        return stripslashes(json_encode($this->normalize($data)));

    }

    protected function normalize($data)

    {

        if (null === $data || is_scalar($data)) {

            return $data;

        }

        if (is_array($data) || $data instanceof \Traversable) {

            $normalized = array();

            foreach ($data as $key => $value) {

                $normalized[$key] = $this->normalize($value);

            }

            return $normalized;

        }

        if (is_resource($data)) {

            return '[resource]';

        }

        return sprintf("[object] (%s: %s)", get_class($data), json_encode($data));

    }

}