/**
 * Palantir - A Lightweight, RESTful DICOM Store
 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
 * Belgium
 *
 * This program 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 3 of the
 * License, or (at your option) any later version.
 * 
 * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 **/


#pragma once

#include "DicomTag.h"
#include "DicomValue.h"
#include "DicomString.h"

#include <map>
#include <json/json.h>

namespace Palantir
{
  class DicomMap : public boost::noncopyable
  {
  private:
    friend class DicomArray;
    friend class FromDcmtkBridge;
    friend class ToDcmtkBridge;

    typedef std::map<DicomTag, DicomValue*>  Map;

    Map map_;

    // Warning: This takes the ownership of "value"
    void SetValue(uint16_t group, 
                  uint16_t element, 
                  DicomValue* value);

    void SetValue(DicomTag tag, 
                  DicomValue* value);

    void ExtractTags(DicomMap& source,
                     const DicomTag* tags,
                     size_t count) const;

  public:
    DicomMap()
    {
    }

    ~DicomMap()
    {
      Clear();
    }

    DicomMap* Clone() const;

    void Clear();

    void SetValue(uint16_t group, 
                  uint16_t element, 
                  const DicomValue& value)
    {
      SetValue(group, element, value.Clone());
    }

    void SetValue(const DicomTag& tag,
                  const DicomValue& value)
    {
      SetValue(tag, value.Clone());
    }

    void SetValue(const DicomTag& tag,
                  const std::string& str)
    {
      SetValue(tag, new DicomString(str));
    }

    void SetValue(uint16_t group, 
                  uint16_t element, 
                  const std::string& str)
    {
      SetValue(group, element, new DicomString(str));
    }

    bool HasTag(uint16_t group, uint16_t element) const
    {
      return HasTag(DicomTag(group, element));
    }

    bool HasTag(const DicomTag& tag) const
    {
      return map_.find(tag) != map_.end();
    }

    const DicomValue& GetValue(uint16_t group, uint16_t element) const
    {
      return GetValue(DicomTag(group, element));
    }

    const DicomValue& GetValue(const DicomTag& tag) const;

    void Remove(const DicomTag& tag);

    void ExtractPatientInformation(DicomMap& result) const;

    void ExtractStudyInformation(DicomMap& result) const;

    void ExtractSeriesInformation(DicomMap& result) const;

    void ExtractInstanceInformation(DicomMap& result) const;

    static void SetupFindPatientTemplate(DicomMap& result);

    static void SetupFindStudyTemplate(DicomMap& result);

    static void SetupFindSeriesTemplate(DicomMap& result);

    static void SetupFindInstanceTemplate(DicomMap& result);

    void CopyTagIfExists(const DicomMap& source,
                         const DicomTag& tag);
  };
}