/*
 * (C) Copyright 2020- ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 * In applying this licence, ECMWF does not waive the privileges and immunities
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */

/// @author Baudouin Raoult
/// @date   Jun 2020

#pragma once

#include "metkit/codes/CodesDecoder.h"

#include "eckit/io/Buffer.h"

namespace metkit {
namespace codes {

//----------------------------------------------------------------------------------------------------------------------

class GRIBDecoder : public CodesDecoder<GRIBDecoder> {
public:  // methods

private:  // methods

    bool match(const eckit::message::Message&) const override;
    void print(std::ostream&) const override;

    void getMetadata(const eckit::message::Message& msg, eckit::message::MetadataGatherer&,
                     const eckit::message::GetMetadataOptions&) const override;

    eckit::Buffer decode(const eckit::message::Message& msg) const override;

public:  // methods for decoding the metadata

    static std::string getString(codes_handle* h, codes_keys_iterator* it, const char* name);
    static long getLong(codes_handle* h, codes_keys_iterator* it, const char* name);
    static double getDouble(codes_handle* h, codes_keys_iterator* it, const char* name);
    static bool getBytes(codes_handle* h, codes_keys_iterator* it, const char* name, unsigned char* vals, size_t* len);
};


//----------------------------------------------------------------------------------------------------------------------

}  // namespace codes
}  // namespace metkit
