<?php

// @usage: throw new Api_WfsException("Access Denied to Create field '{$fieldName}' in object '{$typeName}.{$pkObject}'", __LINE__, null, 'MissingFieldPermCreate', 'request');

// <xsd:schema
//     targetNamespace="http://www.opengis.net/ogc"
//     xmlns:ogc="http://www.opengis.net/ogc"
//     xmlns:xsd="http://www.w3.org/2001/XMLSchema"
//     elementFormDefault="qualified">
//
//     <xsd:element name="ServiceExceptionReport">
//        <xsd:complexType>
//           <xsd:sequence>
//              <xsd:element name="ServiceException"
//                           type="ogc:ServiceExceptionType"
//                           minOccurs="0" maxOccurs="unbounded"/>
//           </xsd:sequence>
//           <xsd:attribute name="version" type="xsd:string" fixed="1.3.0"/>
//        </xsd:complexType>
//     </xsd:element>
//
//     <xsd:complexType name="ServiceExceptionType">
//        <xsd:simpleContent>
//           <xsd:extension base="xsd:string">
//              <xsd:attribute name="code" type="xsd:string"/>
//              <xsd:attribute name="locator" type="xsd:string"/>
//           </xsd:extension>
//        </xsd:simpleContent>
//     </xsd:complexType>
// </xsd:schema>
class Api_WfsException extends Exception {

  public $wfsCode = '';
  public $wfsLocator = '';

  public function __construct($message, $code = 0, Exception $previous = null, $wfsCode = '', $wfsLocator = '') {
    $this->wfsCode = $wfsCode;
    $this->wfsLocator = $wfsLocator;
    parent::__construct($message, $code, $previous);
  }

  public function generateResponseXml() {
    $xmlWriter = new XMLWriter();
    if (!$xmlWriter) throw new HttpException("Error no XMLWriter", 404);
		// $xmlWriter->openUri('php://output');
		$xmlWriter->openMemory();
		$xmlWriter->setIndent(true);
		$xmlWriter->startDocument('1.0','UTF-8');
		$xmlWriter->startElement('ServiceExceptionReport');
    {
      $xmlWriter->writeAttribute('xmlns', 'http://www.opengis.net/ogc');
      $xmlWriter->writeAttribute('xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
      $xmlWriter->writeAttribute('xsi:schemaLocation', 'http://www.opengis.net/ogc http://schemas.opengis.net/wfs/1.0.0/OGC-exception.xsd');
      $xmlWriter->writeAttribute('version', '1.2.0');
      $xmlWriter->startElement('ServiceException');
      {
        if ($this->wfsCode) $xmlWriter->writeAttribute('code', $this->wfsCode);
        if ($this->wfsLocator) $xmlWriter->writeAttribute('locator', $this->wfsLocator);
        $xmlWriter->text($this->message);
      }
      $xmlWriter->endElement();// ServiceException
    }
    $xmlWriter->endElement();// ServiceExceptionReport
    $xmlWriter->endDocument();
    return $xmlWriter->outputMemory(true);
  }

  public function sendResponseXml() {
    header('Content-type: application/xml');
    echo $this->generateResponseXml();
  }

}