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/*
 * Copyright (C) 2008-2020, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick.www.rss.extension;

import com.rometools.rome.feed.module.Module;
import com.rometools.rome.io.ModuleGenerator;
import org.jdom2.Element;
import org.jdom2.Namespace;

import java.util.Set;

/**
 * Created by vt on 13/12/2016.
 */
public class JuickModuleGenerator implements ModuleGenerator {

    private static final Namespace JUICK_NS  = Namespace.getNamespace("juick", JuickModule.URI);

    @Override
    public String getNamespaceUri() {
        return JuickModule.URI;
    }

    private static final Set<Namespace> NAMESPACES;

    static {
        NAMESPACES = Set.of(JUICK_NS);
    }

    @Override
    public Set<Namespace> getNamespaces() {
        return NAMESPACES;
    }

    @Override
    public void generate(Module module, Element element) {
        // this is not necessary, it is done to avoid the namespace definition in every item.
        Element root = element;
        while (root.getParent()!=null && root.getParent() instanceof Element) {
            root = element.getParentElement();
        }
        root.addNamespaceDeclaration(JUICK_NS);

        JuickModule juickModule = (JuickModule) module;
        if (juickModule.getUid() > 0) {
            Element user = new Element("user", JUICK_NS);
            user.setAttribute("uid", String.valueOf(juickModule.getUid()), JUICK_NS);
            element.addContent(user);
        }
    }
}