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//
// G4GDMLReadSetup implementation
//
// Author: Zoltan Torzsok, November 2007
// --------------------------------------------------------------------

#include "G4GDMLReadSetup.hh"

// --------------------------------------------------------------------
G4GDMLReadSetup::G4GDMLReadSetup()
  : G4GDMLReadSolids()
{
}

// --------------------------------------------------------------------
G4GDMLReadSetup::~G4GDMLReadSetup()
{
}

// --------------------------------------------------------------------
G4String G4GDMLReadSetup::GetSetup(const G4String& ref)
{
  if(setupMap.size() == 1)  // If there is only one setup defined,
  {                         // no matter how it is named
    return setupMap.cbegin()->second;
  }

  if(setupMap.find(ref) == setupMap.cend())
  {
#ifdef G4VERBOSE
    std::ostringstream message;
    message << "Referenced setup '" << ref << "' was not found!";
    G4Exception("G4GDMLReadSetup::getSetup()", "NullSetup", JustWarning,
                message, "Returning NULL pointer!");
#endif
    return "";
  }

  return setupMap[ref];
}

// --------------------------------------------------------------------
void G4GDMLReadSetup::SetupRead(const xercesc::DOMElement* const element)
{
#ifdef G4VERBOSE
  G4cout << "G4GDML: Reading setup..." << G4endl;
#endif
  G4String name;

  const xercesc::DOMNamedNodeMap* const attributes = element->getAttributes();
  XMLSize_t attributeCount                         = attributes->getLength();

  for(XMLSize_t attribute_index = 0; attribute_index < attributeCount;
      ++attribute_index)
  {
    xercesc::DOMNode* attribute_node = attributes->item(attribute_index);

    if(attribute_node->getNodeType() != xercesc::DOMNode::ATTRIBUTE_NODE)
    {
      continue;
    }

    const xercesc::DOMAttr* const attribute =
      dynamic_cast<xercesc::DOMAttr*>(attribute_node);
    if(attribute == nullptr)
    {
      G4Exception("G4GDMLReadSetup::SetupRead()", "InvalidRead", FatalException,
                  "No attribute found!");
      return;
    }
    const G4String attName  = Transcode(attribute->getName());
    const G4String attValue = Transcode(attribute->getValue());

    if(attName == "name")
    {
      name = attValue;
    }
  }

  for(xercesc::DOMNode* iter = element->getFirstChild(); iter != nullptr;
      iter                   = iter->getNextSibling())
  {
    if(iter->getNodeType() != xercesc::DOMNode::ELEMENT_NODE)
    {
      continue;
    }

    const xercesc::DOMElement* const child =
      dynamic_cast<xercesc::DOMElement*>(iter);
    if(child == nullptr)
    {
      G4Exception("G4GDMLReadSetup::SetupRead()", "InvalidRead", FatalException,
                  "No child found!");
      return;
    }
    const G4String tag = Transcode(child->getTagName());

    if(tag == "world")
    {
      setupMap[name] = GenerateName(RefRead(child));
    }
  }
}