/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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
 *
 *   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 org.apache.clerezza.integrationtest.web.performance;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import java.net.URLEncoder;
import org.apache.commons.codec.binary.Base64;
import org.osgi.service.component.ComponentContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.clerezza.integrationtest.web.framework.WebTestCase;

/**
 *
 * A <code>WebTestCase</code> for testing the SPAQRL endpoint. The test creates
 * a SPARQL CONSTRUCT query and send a GET-request. The request accepts
 * "application/rdf+xml" 
 *
 * @scr.component
 * @scr.service 
 *              interface="org.apache.clerezza.integrationtest.web.framework.WebTestCase"
 * 
 * @author tio
 * 
 */
public class GetSparqlQuery implements WebTestCase {

    /**
     * Service property
     * 
     * @scr.property type="Integer" value="10" description=
     *               "Specifies the number of threads to execute the run method."
     */
    public static final String THREAD_COUNT = "threadCount";
    /**
     * Service property
     * 
     * @scr.property value="admin" description=
     *               "Specifies the user name used in the authorization header."
     */
    public static final String USER_NAME = "user";
    private String username;
    /**
     * Service property
     * 
     * @scr.property value="admin" description=
     *               "Specifies the user password used in the authorization header."
     */
    public static final String USER_PASSWORD = "password";
    private String password;
    private static final String UTF8 = "UTF-8";
    private String requestUri;
    private String query;
    final Logger logger = LoggerFactory.getLogger(GetSparqlQuery.class);

    protected void activate(ComponentContext componentContext) {
        username = (String) componentContext.getProperties().get(USER_NAME);
        password = (String) componentContext.getProperties().get(USER_PASSWORD);
    }

    @Override
    public void init(String testSubjectUriPrefix) {

        logger.info("Init sparql query get request");

        query = "CONSTRUCT { <http://example.org> " +
                "<http://www.w3.org/1999/02/22-rdf-syntax-ns#type> ?x . }" +
                "WHERE { ?y <http://clerezza.org/2009/04/typerendering#mediaType> ?x . }";
        requestUri = testSubjectUriPrefix + "/sparql";

    }

    @Override
    public void run() {
        try {
            String queryParams = URLEncoder.encode("query", UTF8) + "=" + URLEncoder.encode(query, UTF8);
            queryParams += "&";
            queryParams += URLEncoder.encode("default-graph-uri", UTF8) + "=" +
                    URLEncoder.encode("urn:x-localinstance:/content.graph", UTF8);
            URL url = new URL(requestUri + "?" + queryParams);
            HttpURLConnection con = (HttpURLConnection) url.openConnection();
            try {
                con.setRequestMethod("GET");
                con.setRequestProperty("Accept", "application/rdf+xml");
                con.setRequestProperty("Authorization", "Basic " + new String(Base64.encodeBase64((username + ":" + password).getBytes())));
                con.setDoOutput(true);

                int responseCode = con.getResponseCode();
                if (responseCode != 200) {
                    throw new RuntimeException("GetSparqlQuery: unexpected " + "response code: " + responseCode);
                }
                String contentType = con.getContentType();
                if (contentType == null) {
                    throw new RuntimeException(
                            "GetSparqlQuery: Couldn't determine content type.");
                }
                int length = con.getContentLength();
                byte[] content = new byte[length];
                InputStream inputStream = con.getInputStream();
                try {
                    int i = 0;
                    while (i < length && ((content[i++] = (byte) inputStream.read()) != -1)) {
                    }
                    if (i != length) {
                        throw new RuntimeException(
                                "GetSparqlQuery: Couldn't read all data.");
                    }
                } finally {
                    inputStream.close();
                }
            } finally {
                con.disconnect();
            }
        } catch (MalformedURLException me) {
            me.printStackTrace();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
    }

    @Override
    public boolean multiThreadingCapable() {
        return true;
    }
}