<?php

namespace ColissimoLabel\Response;

/**
 * @author Gilles Bourgeat >gilles.bourgeat@gmail.com>
 */
class BordereauResponse
{
    const UUID = '/--uuid:/'; //This is the separator of each part of the response
    const CONTENT = 'Content-';

    public $soapResponse;
    public $attachments = [];
    public $uuid;

    public function __construct($soapResponse)
    {
        $this->soapResponse = $soapResponse;

        $this->parseResponse($soapResponse);
    }

    protected function parseResponse($response)
    {
        $content = array ();
        $matches = array ();
        preg_match_all(self::UUID, $response, $matches, PREG_OFFSET_CAPTURE);

        for($i = 0; $i < count ( $matches [0] ) -1; $i ++) {
            if ($i + 1 < count ( $matches [0] )) {
                $content [$i] = substr ( $response, $matches [0] [$i] [1], $matches [0] [$i + 1] [1] - $matches [0][$i] [1] );
            } else {
                $content [$i] = substr ( $response, $matches [0] [$i] [1], strlen ( $response ) );
            }
        }

        foreach ( $content as $part ) {
            if ($this->uuid == null) {
                $uuidStart = 0;
                $uuidEnd = 0;
                $uuidStart = strpos($part, self::UUID, 0) + strlen(self::UUID);
                $uuidEnd = strpos($part, "\r\n", $uuidStart);
                $this->uuid = substr($part, $uuidStart, $uuidEnd - $uuidStart);
            }
            $header = $this->extractHeader($part);
            if(count($header) > 0) {
                if (strpos($header['Content-Type'], 'type="text/xml"') !== FALSE) {
                    $this->soapResponse['header'] = $header;
                    $this->soapResponse['data'] = trim(substr($part, $header['offsetEnd']));
                } else {
                    $attachment['header'] = $header;
                    $attachment['data'] = trim(substr($part, $header['offsetEnd']));
                    array_push($this->attachments, $attachment);
                }
            }
        }
    }

    /**
     * Exclude the header from the Web Service response * @param string $part
     * @return array $header
     */
    private function extractHeader($part)
    {
        $header = array();
        $headerLineStart = strpos($part, self::CONTENT, 0);
        $endLine = 0;
        while($headerLineStart !== FALSE) {
            $header['offsetStart'] = $headerLineStart;
            $endLine = strpos($part, "\r\n", $headerLineStart);
            $headerLine = explode(': ', substr($part, $headerLineStart, $endLine-$headerLineStart)); $header[$headerLine[0]] = $headerLine[1];
            $headerLineStart = strpos($part, self::CONTENT, $endLine);
        }
        $header['offsetEnd'] = $endLine;
        return $header;
    }
}