/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Copyright 2018 Danny Robson <danny@nerdcruft.net>
 */

#include "combine.hpp"

#include "properties.hpp"

#include "../tree.hpp"

#include "../../iterator.hpp"
#include "../../cast.hpp"

using util::json::schema::constraint::combine;


///////////////////////////////////////////////////////////////////////////////
combine::combine (::json::tree::node const &def)
{
    for (auto const &[key,val]: def.as_object ()) {
        if (key == "$schema") {
            m_version = val->as_string ();
            continue;
        }

        if (key == "default") {
            m_default = val->clone ();
            continue;
        }

        m_constraints.push_back (instantiate (key, *val));

        if (key == "additionalProperties") {
            m_additional = util::cast::known<additional_properties> (m_constraints.back ().get ());
            m_additional->use (m_properties);
            m_additional->use (m_patterns);
        } else if (key == "properties") {
            m_properties = util::cast::known<properties> (m_constraints.back().get ());
            if (m_additional)
                m_additional->use (m_properties);
        } else if (key == "patternProperties") {
            m_patterns = util::cast::known<pattern_properties> (m_constraints.back ().get ());
            if (m_additional)
                m_additional->use (m_patterns);
        }
    }
}


///////////////////////////////////////////////////////////////////////////////
combine::output_iterator
combine::validate (output_iterator res, ::json::tree::node &data) const noexcept
{
    for (auto const &i: m_constraints)
        res = i->validate (res, data);
    return res;
}


///////////////////////////////////////////////////////////////////////////////
std::ostream&
combine::describe (std::ostream &os) const
{
    return os << "{ combine: [ ";
    for (auto const &i: m_constraints)
        os << *i << ", ";
    return os << " ] }";
}


///////////////////////////////////////////////////////////////////////////////
bool
combine::has_default (void) const
{
    return !!m_default;
}

//-----------------------------------------------------------------------------
std::unique_ptr<::json::tree::node>
combine::default_value (void) const
{
    return m_default->clone ();
}