<?php
namespace AliyunMNS\Responses;

use AliyunMNS\Exception\MnsException;
use AliyunMNS\Responses\BaseResponse;
use AliyunMNS\Common\XMLParser;

class ListTopicResponse extends BaseResponse
{
    private $topicNames;
    private $nextMarker;

    public function __construct()
    {
        $this->topicNames = array();
        $this->nextMarker = NULL;
    }

    public function isFinished()
    {
        return $this->nextMarker == NULL;
    }

    public function getTopicNames()
    {
        return $this->topicNames;
    }

    public function getNextMarker()
    {
        return $this->nextMarker;
    }

    public function parseResponse($statusCode, $content)
    {
        $this->statusCode = $statusCode;
        if ($statusCode != 200) {
            $this->parseErrorResponse($statusCode, $content);
            return;
        }

        $this->succeed = TRUE;
        $xmlReader = $this->loadXmlContent($content);

        try
        {
            while ($xmlReader->read())
            {
                if ($xmlReader->nodeType == \XMLReader::ELEMENT)
                {
                    switch ($xmlReader->name) {
                    case 'TopicURL':
                        $xmlReader->read();
                        if ($xmlReader->nodeType == \XMLReader::TEXT)
                        {
                            $topicName = $this->getTopicNameFromTopicURL($xmlReader->value);
                            $this->topicNames[] = $topicName;
                        }
                        break;
                    case 'NextMarker':
                        $xmlReader->read();
                        if ($xmlReader->nodeType == \XMLReader::TEXT)
                        {
                            $this->nextMarker = $xmlReader->value;
                        }
                        break;
                    }
                }
            }
        }
        catch (\Exception $e)
        {
            throw new MnsException($statusCode, $e->getMessage(), $e);
        }
        catch (\Throwable $t)
        {
            throw new MnsException($statusCode, $t->getMessage());
        }
    }

    private function getTopicNameFromTopicURL($topicURL)
    {
        $pieces = explode("/", $topicURL);
        if (count($pieces) == 5)
        {
            return $pieces[4];
        }
        return "";
    }

    public function parseErrorResponse($statusCode, $content, MnsException $exception = NULL)
    {
        $this->succeed = FALSE;
        $xmlReader = $this->loadXmlContent($content);

        try
        {
            $result = XMLParser::parseNormalError($xmlReader);

            throw new MnsException($statusCode, $result['Message'], $exception, $result['Code'], $result['RequestId'], $result['HostId']);
        }
        catch (\Exception $e)
        {
            if ($exception != NULL)
            {
                throw $exception;
            }
            elseif ($e instanceof MnsException)
            {
                throw $e;
            }
            else
            {
                throw new MnsException($statusCode, $e->getMessage());
            }
        }
        catch (\Throwable $t)
        {
            throw new MnsException($statusCode, $t->getMessage());
        }
    }
}

?>