<?php

namespace Pheanstalk\Command;

use Pheanstalk\Exception;

/**
 * The 'put' command.
 * Inserts a job into the client's currently used tube.
 * @see UseCommand
 *
 * @author Paul Annesley
 * @package Pheanstalk
 * @license http://www.opensource.org/licenses/mit-license.php
 */
class PutCommand
    extends AbstractCommand
    implements \Pheanstalk\ResponseParser
{
    private $_data;
    private $_priority;
    private $_delay;
    private $_ttr;

    /**
     * Puts a job on the queue
     * @param string $data     The job data
     * @param int    $priority From 0 (most urgent) to 0xFFFFFFFF (least urgent)
     * @param int    $delay    Seconds to wait before job becomes ready
     * @param int    $ttr      Time To Run: seconds a job can be reserved for
     */
    public function __construct($data, $priority, $delay, $ttr)
    {
        $this->_data = $data;
        $this->_priority = $priority;
        $this->_delay = $delay;
        $this->_ttr = $ttr;
    }

    /* (non-phpdoc)
     * @see Command::getCommandLine()
     */
    public function getCommandLine()
    {
        return sprintf(
            'put %u %u %u %u',
            $this->_priority,
            $this->_delay,
            $this->_ttr,
            $this->getDataLength()
        );
    }

    /* (non-phpdoc)
     * @see Command::hasData()
     */
    public function hasData()
    {
        return true;
    }

    /* (non-phpdoc)
     * @see Command::getData()
     */
    public function getData()
    {
        return $this->_data;
    }

    /* (non-phpdoc)
     * @see Command::getDataLength()
     */
    public function getDataLength()
    {
        if (function_exists('mb_strlen')) {
            return mb_strlen($this->_data, "latin1");
        } else {
            return strlen($this->_data);
        }
    }

    /* (non-phpdoc)
     * @see ResponseParser::parseResponse()
     */
    public function parseResponse($responseLine, $responseData)
    {
        if (preg_match('#^INSERTED (\d+)$#', $responseLine, $matches)) {
            return $this->_createResponse('INSERTED', array(
                'id' => (int) $matches[1]
            ));
        } elseif (preg_match('#^BURIED (\d)+$#', $responseLine, $matches)) {
            throw new Exception(sprintf(
                '%s: server ran out of memory trying to grow the priority queue data structure.',
                $responseLine
            ));
        } elseif (preg_match('#^JOB_TOO_BIG$#', $responseLine)) {
            throw new Exception(sprintf(
                '%s: job data exceeds server-enforced limit',
                $responseLine
            ));
        } elseif (preg_match('#^EXPECTED_CRLF#', $responseLine)) {
            throw new Exception(sprintf(
                '%s: CRLF expected',
                $responseLine
            ));
        } else {
            throw new Exception(sprintf(
                'Unhandled response: %s',
                $responseLine
            ));
        }
    }
}