/*
Copyright (C) 2001-2006, William Joseph.
All Rights Reserved.

This file is part of GtkRadiant.

GtkRadiant is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

GtkRadiant is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#if !defined(INCLUDED_NAMEKEYS_H)
#define INCLUDED_NAMEKEYS_H

#include <stdio.h>
#include <map>
#include "generic/static.h"
#include "entitylib.h"
#include "namespace.h"

inline bool string_is_integer(const char* string)
{
  strtol(string, const_cast<char**>(&string), 10);
  return *string == '\0';
}

typedef bool (*KeyIsNameFunc)(const char* key);

class KeyIsName
{
public:
  KeyIsNameFunc m_keyIsName;
  const char* m_nameKey;

  KeyIsName()
  {
  }
};


typedef MemberCaller1<KeyValue, const char*, &KeyValue::assign> KeyValueAssignCaller;
typedef MemberCaller1<KeyValue, const KeyObserver&, &KeyValue::attach> KeyValueAttachCaller;
typedef MemberCaller1<KeyValue, const KeyObserver&, &KeyValue::detach> KeyValueDetachCaller;

class NameKeys : public EntityKeyValues::Observer, public Namespaced
{
  Namespace* m_namespace;
  EntityKeyValues& m_entity;
  KeyIsNameFunc m_keyIsName;
  NameKeys(const NameKeys& other);
  NameKeys& operator=(const NameKeys& other);

  typedef std::map<CopiedString, EntityKeyValues::Value*> KeyValues;
  KeyValues m_keyValues;

  void insertName(const char* key, EntityKeyValues::Value& value)
  {
    if(m_namespace != 0 && m_keyIsName(key))
    {
      //globalOutputStream() << "insert " << key << "\n";
      m_namespace->attach(KeyValueAssignCaller(value), KeyValueAttachCaller(value));
    }
  }
  void eraseName(const char* key, EntityKeyValues::Value& value)
  {
    if(m_namespace != 0 && m_keyIsName(key))
    {
      //globalOutputStream() << "erase " << key << "\n";
      m_namespace->detach(KeyValueAssignCaller(value), KeyValueDetachCaller(value));
    }
  }
  void insertAll()
  {
    for(KeyValues::iterator i = m_keyValues.begin(); i != m_keyValues.end(); ++i)
    {
      insertName((*i).first.c_str(), *(*i).second);
    }
  }
  void eraseAll()
  {
    for(KeyValues::iterator i = m_keyValues.begin(); i != m_keyValues.end(); ++i)
    {
      eraseName((*i).first.c_str(), *(*i).second);
    }
  }
public:
  NameKeys(EntityKeyValues& entity) : m_namespace(0), m_entity(entity), m_keyIsName(Static<KeyIsName>::instance().m_keyIsName)
  {
    m_entity.attach(*this);
  }
  ~NameKeys()
  {
    m_entity.detach(*this);
  }
  void setNamespace(Namespace& space)
  {
    eraseAll();
    m_namespace = &space;
    insertAll();
  }
  void setKeyIsName(KeyIsNameFunc keyIsName)
  {
    eraseAll();
    m_keyIsName = keyIsName;
    insertAll();
  }
  void insert(const char* key, EntityKeyValues::Value& value)
  {
    m_keyValues.insert(KeyValues::value_type(key, &value));
    insertName(key, value);
  }
  void erase(const char* key, EntityKeyValues::Value& value)
  {
    eraseName(key, value);
    m_keyValues.erase(key);
  }
};

inline bool keyIsNameDoom3(const char* key)
{
  return string_equal(key, "target")
    || (string_equal_n(key, "target", 6) && string_is_integer(key + 6))
    || string_equal(key, "name");
}

inline bool keyIsNameDoom3Doom3Group(const char* key)
{
  return keyIsNameDoom3(key)
    || string_equal(key, "model");
}

inline bool keyIsNameQuake3(const char* key)
{
  return string_equal(key, "target")
    || string_equal(key, "targetname");
}

#endif