/**
 * 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.rendering;

import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import org.apereo.portal.rendering.xslt.TransformerSource;
import org.apereo.portal.utils.cache.CacheKey;
import org.apereo.portal.xml.XmlUtilities;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.Resource;

/**
 */
public class StaticTransformerSource implements TransformerSource {
    private Resource stylesheet;
    private XmlUtilities xmlUtilities;

    public void setStylesheet(Resource stylesheet) {
        this.stylesheet = stylesheet;
    }

    @Autowired
    public void setXmlUtilities(XmlUtilities xmlUtilities) {
        this.xmlUtilities = xmlUtilities;
    }

    /* (non-Javadoc)
     * @see org.apereo.portal.rendering.xslt.TransformerSource#getTransformer(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    @Override
    public Transformer getTransformer(HttpServletRequest request, HttpServletResponse response) {
        try {
            return this.xmlUtilities.getTransformer(this.stylesheet);
        } catch (TransformerConfigurationException e) {
            throw new RuntimeException(e);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    /* (non-Javadoc)
     * @see org.apereo.portal.rendering.xslt.TransformerSource#getCacheKey(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    @Override
    public CacheKey getCacheKey(HttpServletRequest request, HttpServletResponse response) {
        return CacheKey.build(
                StaticTransformerSource.class.getName(), this.stylesheet.getDescription());
    }
}