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/**
 *
 * 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.openejb.client;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URL;
import java.net.URISyntaxException;
import java.util.Map;

/**
 * @version $Revision: 831632 $ $Date: 2009-10-31 18:09:41 -0700 (Sat, 31 Oct 2009) $
 */
public class HttpConnectionFactory implements ConnectionFactory {

    public Connection getConnection(URI uri) throws IOException {
        return new HttpConnection(uri);
    }

    public static class HttpConnection implements Connection {

        private HttpURLConnection httpURLConnection;
        private InputStream inputStream;
        private OutputStream outputStream;
        private URI uri;

        public HttpConnection(URI uri) throws IOException {
            this.uri = uri;
            URL url = uri.toURL();

            Map params;
            try {
                params = MulticastConnectionFactory.URIs.parseParamters(uri);
            } catch (URISyntaxException e) {
                throw new IllegalArgumentException("Invalid uri " + uri.toString(), e);
            }

            httpURLConnection = (HttpURLConnection)url.openConnection();
            httpURLConnection.setDoOutput(true);

            if (params.containsKey("connectTimeout")) {
                httpURLConnection.setConnectTimeout(Integer.parseInt(params.get("connectTimeout")));
            }

            if (params.containsKey("readTimeout")) {
                httpURLConnection.setReadTimeout(Integer.parseInt(params.get("readTimeout")));
            }

            httpURLConnection.connect();
        }

        public void discard() {
            try {
                close();
            } catch (IOException e) {
            }
        }

        public URI getURI() {
            return uri;
        }

        public void close() throws IOException {
            IOException exception = null;
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    exception = e;
                }
            }
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    if (exception == null) {
                        exception = e;
                    }
                }
            }

            inputStream = null;
            outputStream = null;
            httpURLConnection = null;

            if (exception != null) {
                throw exception;
            }
        }

        public OutputStream getOuputStream() throws IOException {
            if (outputStream == null) {
                outputStream = httpURLConnection.getOutputStream();
            }
            return outputStream;
        }

        public InputStream getInputStream() throws IOException {
            if (inputStream == null) {
                inputStream = httpURLConnection.getInputStream();
            }
            return inputStream;
        }
    }
}