/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you 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 the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>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 org.apereo.portal.portlet.delegation;

import java.util.Locale;
import java.util.TimeZone;
import javax.portlet.ResourceResponse;
import org.apache.commons.lang.time.FastDateFormat;
import org.apereo.portal.portlet.rendering.PortletResourceOutputHandler;

/**
 * Delegates to a {@link ResourceResponse}
 *
 */
public class ResourceResponsePortletOutputHandler extends MimeResponsePortletOutputHandler
        implements PortletResourceOutputHandler {
    private static final TimeZone GMT_ZONE = TimeZone.getTimeZone("GMT");
    private static final FastDateFormat HTTP_HEADER_DATE_FORMAT =
            FastDateFormat.getInstance("EEE, dd MMM yyyy HH:mm:ss Z", GMT_ZONE, Locale.US);

    private final ResourceResponse resourceResponse;

    public ResourceResponsePortletOutputHandler(ResourceResponse resourceResponse) {
        super(resourceResponse);
        this.resourceResponse = resourceResponse;
    }

    @Override
    public void setCharacterEncoding(String charset) {
        resourceResponse.setCharacterEncoding(charset);
    }

    @Override
    public void setContentLength(int len) {
        resourceResponse.setContentLength(len);
    }

    @Override
    public void setLocale(Locale locale) {
        resourceResponse.setLocale(locale);
    }

    @Override
    public void setStatus(int status) {
        resourceResponse.setProperty(ResourceResponse.HTTP_STATUS_CODE, Integer.toString(status));
    }

    @Override
    public void setDateHeader(String name, long date) {
        final String value = HTTP_HEADER_DATE_FORMAT.format(date);
        this.setHeader(name, value);
    }

    @Override
    public void addDateHeader(String name, long date) {
        final String value = HTTP_HEADER_DATE_FORMAT.format(date);
        this.addHeader(name, value);
    }

    @Override
    public void setHeader(String name, String value) {
        this.resourceResponse.setProperty(name, value);
    }

    @Override
    public void addHeader(String name, String value) {
        this.resourceResponse.addProperty(name, value);
    }

    @Override
    public void setIntHeader(String name, int value) {
        this.resourceResponse.setProperty(name, Integer.toString(value));
    }

    @Override
    public void addIntHeader(String name, int value) {
        this.resourceResponse.addProperty(name, Integer.toString(value));
    }

    @Override
    public boolean containsHeader(String name) {
        // TODO Need reference to the request to answer this
        return false;
    }

    @Override
    public String getCharacterEncoding() {
        return this.resourceResponse.getCharacterEncoding();
    }

    @Override
    public Locale getLocale() {
        return this.resourceResponse.getLocale();
    }
}