// --------------------------------------------------------------------------
//                   OpenMS -- Open-Source Mass Spectrometry
// --------------------------------------------------------------------------
// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2021.
//
// This software is released under a three-clause BSD license:
//  * Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//  * Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//  * Neither the name of any author or any participating institution
//    may be used to endorse or promote products derived from this software
//    without specific prior written permission.
// For a full list of authors, refer to the file AUTHORS.
// --------------------------------------------------------------------------
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL ANY OF THE AUTHORS OR THE CONTRIBUTING
// INSTITUTIONS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// --------------------------------------------------------------------------
// $Maintainer: Timo Sachsenberg $
// $Authors: Andreas Bertsch $
// --------------------------------------------------------------------------

#pragma once

#include <OpenMS/FORMAT/HANDLERS/XMLHandler.h>
#include <OpenMS/CHEMISTRY/EmpiricalFormula.h>
#include <OpenMS/CHEMISTRY/ResidueModification.h>

#include <vector>

namespace OpenMS
{
  namespace Internal
  {
    /**
    @brief Handler that is used for parsing XTandemXML data

  */
    class OPENMS_DLLAPI UnimodXMLHandler :
      public XMLHandler
    {
public:
      /// Default constructor
      UnimodXMLHandler(std::vector<ResidueModification*>& mods, const String& filename);

      /// Destructor
      ~UnimodXMLHandler() override;

      // Docu in base class
      void endElement(const XMLCh* const /*uri*/, const XMLCh* const /*local_name*/, const XMLCh* const qname) override;

      // Docu in base class
      void startElement(const XMLCh* const /*uri*/, const XMLCh* const /*local_name*/, const XMLCh* const qname, const xercesc::Attributes& attributes) override;

      // Docu in base class
      void characters(const XMLCh* const chars, const XMLSize_t /*length*/) override;

private:

      String tag_;

      double avge_mass_;

      double mono_mass_;

      EmpiricalFormula diff_formula_;

      std::vector<EmpiricalFormula> neutral_loss_diff_formula_;

      bool was_valid_peptide_modification_;
      std::vector<std::vector<EmpiricalFormula>> neutral_loss_diff_formulas_;
      std::vector<double> neutral_loss_mono_masses_;
      std::vector<double> neutral_loss_avg_masses_;

      ResidueModification* modification_;

      std::vector<ResidueModification*>& modifications_;

      std::vector<char> sites_;

      std::vector<ResidueModification::TermSpecificity> term_specs_;
    };

  }   // namespace Internal
} // namespace OpenMS
