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/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Logger;

use Psr\Log\AbstractLogger;
use Psr\Log\InvalidArgumentException;
use Psr\Log\LogLevel;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * PSR-3 compliant console logger.
 *
 * @author Kévin Dunglas &lt;dunglas@gmail.com&gt;
 *
 * @see https://www.php-fig.org/psr/psr-3/
 */
class ConsoleLogger extends AbstractLogger
{
    public const INFO = 'info';
    public const ERROR = 'error';

    private $output;
    private $verbosityLevelMap = [
        LogLevel::EMERGENCY =&gt; OutputInterface::VERBOSITY_NORMAL,
        LogLevel::ALERT =&gt; OutputInterface::VERBOSITY_NORMAL,
        LogLevel::CRITICAL =&gt; OutputInterface::VERBOSITY_NORMAL,
        LogLevel::ERROR =&gt; OutputInterface::VERBOSITY_NORMAL,
        LogLevel::WARNING =&gt; OutputInterface::VERBOSITY_NORMAL,
        LogLevel::NOTICE =&gt; OutputInterface::VERBOSITY_VERBOSE,
        LogLevel::INFO =&gt; OutputInterface::VERBOSITY_VERY_VERBOSE,
        LogLevel::DEBUG =&gt; OutputInterface::VERBOSITY_DEBUG,
    ];
    private $formatLevelMap = [
        LogLevel::EMERGENCY =&gt; self::ERROR,
        LogLevel::ALERT =&gt; self::ERROR,
        LogLevel::CRITICAL =&gt; self::ERROR,
        LogLevel::ERROR =&gt; self::ERROR,
        LogLevel::WARNING =&gt; self::INFO,
        LogLevel::NOTICE =&gt; self::INFO,
        LogLevel::INFO =&gt; self::INFO,
        LogLevel::DEBUG =&gt; self::INFO,
    ];
    private $errored = false;

    public function __construct(OutputInterface $output, array $verbosityLevelMap = [], array $formatLevelMap = [])
    {
        $this-&gt;output = $output;
        $this-&gt;verbosityLevelMap = $verbosityLevelMap + $this-&gt;verbosityLevelMap;
        $this-&gt;formatLevelMap = $formatLevelMap + $this-&gt;formatLevelMap;
    }

    /**
     * {@inheritdoc}
     *
     * @return void
     */
    public function log($level, $message, array $context = [])
    {
        if (!isset($this-&gt;verbosityLevelMap[$level])) {
            throw new InvalidArgumentException(sprintf('The log level &quot;%s&quot; does not exist.', $level));
        }

        $output = $this-&gt;output;

        // Write to the error output if necessary and available
        if (self::ERROR === $this-&gt;formatLevelMap[$level]) {
            if ($this-&gt;output instanceof ConsoleOutputInterface) {
                $output = $output-&gt;getErrorOutput();
            }
            $this-&gt;errored = true;
        }

        // the if condition check isn't necessary -- it's the same one that $output will do internally anyway.
        // We only do it for efficiency here as the message formatting is relatively expensive.
        if ($output-&gt;getVerbosity() &gt;= $this-&gt;verbosityLevelMap[$level]) {
            $output-&gt;writeln(sprintf('&lt;%1$s&gt;[%2$s] %3$s&lt;/%1$s&gt;', $this-&gt;formatLevelMap[$level], $level, $this-&gt;interpolate($message, $context)), $this-&gt;verbosityLevelMap[$level]);
        }
    }

    /**
     * Returns true when any messages have been logged at error levels.
     *
     * @return bool
     */
    public function hasErrored()
    {
        return $this-&gt;errored;
    }

    /**
     * Interpolates context values into the message placeholders.
     *
     * @author PHP Framework Interoperability Group
     */
    private function interpolate(string $message, array $context): string
    {
        if (!str_contains($message, '{')) {
            return $message;
        }

        $replacements = [];
        foreach ($context as $key =&gt; $val) {
            if (null === $val || \is_scalar($val) || (\is_object($val) &amp;&amp; method_exists($val, '__toString'))) {
                $replacements[&quot;{{$key}}&quot;] = $val;
            } elseif ($val instanceof \DateTimeInterface) {
                $replacements[&quot;{{$key}}&quot;] = $val-&gt;format(\DateTime::RFC3339);
            } elseif (\is_object($val)) {
                $replacements[&quot;{{$key}}&quot;] = '[object '.\get_class($val).']';
            } else {
                $replacements[&quot;{{$key}}&quot;] = '['.\gettype($val).']';
            }
        }

        return strtr($message, $replacements);
    }
}
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