/**
 * \file
 * \copyright
 * Copyright (c) 2012-2021, OpenGeoSys Community (http://www.opengeosys.org)
 *            Distributed under a Modified BSD License.
 *              See accompanying file LICENSE.txt or
 *              http://www.opengeosys.org/project/license
 *
 */

#include "SecondaryVariable.h"

namespace ProcessLib
{
void SecondaryVariableCollection::addNameMapping(
    std::string const& internal_name, std::string const& external_name)
{
    // TODO check for missing secondary vars.
    // TODO check primary vars, too
    BaseLib::insertIfKeyUniqueElseError(
        _map_external_to_internal, external_name, internal_name,
        "Secondary variable names must be unique.");
}

void SecondaryVariableCollection::addSecondaryVariable(
    std::string const& internal_name, SecondaryVariableFunctions&& fcts)
{
    if (!_configured_secondary_variables
             .emplace(std::make_pair(
                 internal_name,
                 SecondaryVariable{internal_name /* TODO change */,
                                   std::move(fcts)}))
             .second)
    {
        OGS_FATAL(
            "The secondary variable with internal name `{:s}' has already been "
            "set up.",
            internal_name);
    }
}

std::map<std::string, std::string>::const_iterator
SecondaryVariableCollection::begin() const
{
    return _map_external_to_internal.cbegin();
}

std::map<std::string, std::string>::const_iterator
SecondaryVariableCollection::end() const
{
    return _map_external_to_internal.cend();
}

SecondaryVariable const& SecondaryVariableCollection::get(
    std::string const& external_name) const
{
    auto const it = _map_external_to_internal.find(external_name);

    if (it == _map_external_to_internal.cend())
    {
        OGS_FATAL(
            "A secondary variable with external name '{:s}' has not been set "
            "up.",
            external_name);
    }

    auto const& internal_name = it->second;
    auto const it2 = _configured_secondary_variables.find(internal_name);

    if (it2 == _configured_secondary_variables.end())
    {
        OGS_FATAL(
            "A secondary variable with internal name '{:s}' has not been set "
            "up.",
            internal_name);
    }

    return it2->second;
}

}  // namespace ProcessLib