<?php

namespace Monolog\Handler;

use DateTimeInterface;
use Monolog\Handler\SyslogUdp\UdpSocket;
use Monolog\Logger;
use Monolog\Utils;

/**
 * A Handler for logging to a remote syslogd server.
 *
 * @author Jesper Skovgaard Nielsen <nulpunkt@gmail.com>
 * @author Dominik Kukacka <dominik.kukacka@gmail.com>
 */
class SyslogUdpHandler extends AbstractSyslogHandler
{
    const RFC3164 = 0;
    const RFC5424 = 1;
    const RFC5424e = 2;

    /** @var array<self::RFC*, string> */
    private $dateFormats = array(
        self::RFC3164 => 'M d H:i:s',
        self::RFC5424 => \DateTime::RFC3339,
        self::RFC5424e => \DateTime::RFC3339_EXTENDED,
    );

    /** @var UdpSocket */
    protected $socket;

    /** @var string */
    protected $ident;

    /** @var self::RFC* */
    protected $rfc;

    /**
     * @param string     $host     Either IP/hostname or a path to a unix socket (port must be 0 then)
     * @param int        $port     Port number, or 0 if $host is a unix socket
     * @param string|int $facility Either one of the names of the keys in $this->facilities, or a LOG_* facility constant
     * @param bool       $bubble   Whether the messages that are handled can bubble up the stack or not
     * @param string     $ident    Program name or tag for each log message.
     * @param int        $rfc      RFC to format the message for.
     * @throws MissingExtensionException
     *
     * @phpstan-param self::RFC* $rfc
     */
    public function __construct(
        string $host,
        int $port = 514,
        $facility = LOG_USER,
        $level = Logger::DEBUG,
        bool $bubble = true,
        string $ident = 'php',
        int $rfc = self::RFC5424,
    ) {
        if (!extension_loaded('sockets')) {
            throw new MissingExtensionException('The sockets extension is required to use the SyslogUdpHandler');
        }

        parent::__construct($facility, $level, $bubble);

        $this->ident = $ident;
        $this->rfc = $rfc;

        $this->socket = new UdpSocket($host, $port);
    }

    protected function write(array $record): void
    {
        $lines = $this->splitMessageIntoLines($record['formatted']);

        $header = $this->makeCommonSyslogHeader($this->logLevels[$record['level']], $record['datetime']);

        foreach ($lines as $line) {
            $this->socket->write($line, $header);
        }
    }

    public function close(): void
    {
        $this->socket->close();
    }

    /**
     * @param  string|string[] $message
     * @return string[]
     */
    private function splitMessageIntoLines($message): array
    {
        if (is_array($message)) {
            $message = implode("\n", $message);
        }

        $lines = preg_split('/$\R?^/m', (string) $message, -1, PREG_SPLIT_NO_EMPTY);
        if (false === $lines) {
            $pcreErrorCode = preg_last_error();
            throw new \RuntimeException('Could not preg_split: ' . $pcreErrorCode . ' / ' . Utils::pcreLastErrorMessage($pcreErrorCode));
        }

        return $lines;
    }

    /**
     * Make common syslog header (see rfc5424 or rfc3164)
     */
    protected function makeCommonSyslogHeader(int $severity, DateTimeInterface $datetime): string
    {
        $priority = $severity + $this->facility;

        if (!$pid = getmypid()) {
            $pid = '-';
        }

        if (!$hostname = gethostname()) {
            $hostname = '-';
        }

        if ($this->rfc === self::RFC3164) {
            // see https://github.com/phpstan/phpstan/issues/5348
            // @phpstan-ignore-next-line
            $dateNew = $datetime->setTimezone(new \DateTimeZone('UTC'));
            $date = $dateNew->format($this->dateFormats[$this->rfc]);

            return "<$priority>" .
                $date . " " .
                $hostname . " " .
                $this->ident . "[" . $pid . "]: ";
        }

        $date = $datetime->format($this->dateFormats[$this->rfc]);

        return "<$priority>1 " .
            $date . " " .
            $hostname . " " .
            $this->ident . " " .
            $pid . " - - ";
    }

    /**
     * Inject your own socket, mainly used for testing
     */
    public function setSocket(UdpSocket $socket): self
    {
        $this->socket = $socket;

        return $this;
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NDM3NjI3MTM4MjgxNjQxNiAyMjM0NDM1MzQ3ODEwMDkwIDMzNDUxMjE4MDk1MjQwMzg=