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A library that extends FreeMarker with support for the Java Date/Time API

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/*
 * Copyright (c) 2015-2024 Jakob Vad Nielsen
 *
 * 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 no.api.freemarker.java8.time;

import freemarker.ext.beans.BeansWrapper;
import freemarker.template.*;
import no.api.freemarker.java8.zone.ZoneStrategy;

import java.time.Period;

import static no.api.freemarker.java8.time.DateTimeTools.*;

/**
 * PeriodAdapter gives access to the days, months and years values in the wrapped {@link Period} object in FreeMarker
 * templates.
 */
public class PeriodAdapter extends AbstractAdapter implements AdapterTemplateModel,
      TemplateScalarModel, TemplateHashModel {

    public PeriodAdapter(Period obj, BeansWrapper wrapper, ZoneStrategy strategy) {
        super(obj, wrapper, strategy);
    }

    @Override
    public TemplateModel getForType(String s) throws TemplateModelException {
        if (METHOD_DAYS.equalsIgnoreCase(s)) {
            return new SimpleNumber(getObject().getDays());
        } else if (METHOD_MONTHS.equalsIgnoreCase(s)) {
            return new SimpleNumber(getObject().getMonths());
        } else if (METHOD_YEARS.equalsIgnoreCase(s)) {
            return new SimpleNumber(getObject().getYears());
        }
        throw new TemplateModelException(METHOD_UNKNOWN_MSG + s);
    }

}