/*
 * Copyright 2011 Open Source Applications Foundation
 * Copyright © 2018 Mark Hobson, Roberto Polli
 *
 * 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.
 */

package com.github.caldav4j.support;

import com.github.caldav4j.dialect.CalDavDialect;
import net.fortuna.ical4j.model.Calendar;
import net.fortuna.ical4j.model.Property;
import net.fortuna.ical4j.model.PropertyList;
import net.fortuna.ical4j.model.property.Version;

/**
 * Builder for constructing calendar models using a dialect.
 *
 * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
 * @version $Id$
 */
public class CalendarBuilder {
    // fields -----------------------------------------------------------------

    private final CalDavDialect dialect;

    // constructors -----------------------------------------------------------

    public CalendarBuilder(CalDavDialect dialect) {
        this.dialect = dialect;
    }

    // public methods ---------------------------------------------------------

    public Calendar createCalendar() {
        Calendar calendar = new Calendar();

        // ProdId
        addIfNotNull(calendar.getProperties(), dialect.getProdId());

        // Version
        calendar.getProperties().add(Version.VERSION_2_0);

        // CalScale
        addIfNotNull(calendar.getProperties(), dialect.getDefaultCalScale());

        return calendar;
    }

    // private methods --------------------------------------------------------

    private static void addIfNotNull(PropertyList properties, Property property) {
        if (property != null) {
            properties.add(property);
        }
    }
}
