/*
 * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.yangtools.yang.parser.stmt.rfc6020;

import java.util.Optional;
import javax.annotation.Nullable;
import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
import org.opendaylight.yangtools.yang.model.api.stmt.UnknownStatement;
import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractDeclaredStatement;
import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementDefinitionContext;
import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.UnknownEffectiveStatementImpl;

public class UnknownStatementImpl extends AbstractDeclaredStatement<String> implements UnknownStatement<String> {

    protected UnknownStatementImpl(final StmtContext<String, ?, ?> context) {
        super(context);
    }

    public static class Definition extends
            AbstractStatementSupport<String, UnknownStatement<String>, EffectiveStatement<String, UnknownStatement<String>>> {

        public Definition(final StatementDefinition publicDefinition) {
            super(publicDefinition);
        }

        @Override
        public String parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
            return value;
        }

        @Override
        public UnknownStatement<String> createDeclared(final StmtContext<String, UnknownStatement<String>, ?> ctx) {
            return new UnknownStatementImpl(ctx);
        }

        @Override
        public EffectiveStatement<String, UnknownStatement<String>> createEffective(
                final StmtContext<String, UnknownStatement<String>, EffectiveStatement<String, UnknownStatement<String>>> ctx) {
            return new UnknownEffectiveStatementImpl(ctx);
        }

        @Override
        protected SubstatementValidator getSubstatementValidator() {
            return null;
        }

        @Override
        public Optional<StatementDefinitionContext<?, ?, ?>> getUnknownStatementDefinitionOf(
                final StatementDefinitionContext<?, ?, ?> yangStmtDef) {
            final QName baseQName = getStatementName();
            return Optional.of(new StatementDefinitionContext<>(
                    new ModelDefinedStatementSupport(new ModelDefinedStatementDefinition(
                            QName.create(baseQName, yangStmtDef.getStatementName().getLocalName()),
                            yangStmtDef.hasArgument()
                                    ? QName.create(baseQName, yangStmtDef.getArgumentName().getLocalName()) : null,
                            yangStmtDef.isArgumentYinElement()))));
        }
    }

    @Nullable
    @Override
    public String getArgument() {
        return argument();
    }
}