/*
 * 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.controller.config.util.capability;

import com.google.common.base.Optional;
import org.opendaylight.yangtools.yang.common.Revision;
import org.opendaylight.yangtools.yang.model.api.Module;

/**
 * Yang model representing capability.
 */
public final class YangModuleCapability extends BasicCapability {

    private final String content;
    private final String revision;
    private final String moduleName;
    private final String moduleNamespace;

    public YangModuleCapability(final Module module, final String moduleContent) {
        super(toCapabilityURI(module));
        this.content = moduleContent;
        this.moduleName = module.getName();
        this.moduleNamespace = module.getNamespace().toString();
        this.revision = module.getRevision().map(Revision::toString).orElse(null);
    }

    @Override
    public Optional<String> getCapabilitySchema() {
        return Optional.of(content);
    }

    private static String toCapabilityURI(final Module module) {
        final StringBuilder sb = new StringBuilder();
        sb.append(module.getNamespace()).append("?module=").append(module.getName());

        final java.util.Optional<Revision> rev = module.getRevision();
        if (rev.isPresent()) {
            sb.append("&revision=").append(rev.get());
        }
        return sb.toString();
    }

    @Override
    public Optional<String> getModuleName() {
        return Optional.of(moduleName);
    }

    @Override
    public Optional<String> getModuleNamespace() {
        return Optional.of(moduleNamespace);
    }

    @Override
    public Optional<String> getRevision() {
        return Optional.of(revision);
    }
}