/*
 * 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.cocoon;

import com.gargoylesoftware.htmlunit.WebResponse;
import com.gargoylesoftware.htmlunit.SubmitMethod;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethodBase;

import java.io.InputStream;
import java.io.IOException;
import java.net.URL;
import java.util.List;

/**
 * Wrap the result of an httpclient Method execution into an HtmlUnit
 * WebResponse in order to be used by HtmlUnitTestCase.
 *
 * This class may become obsolete when HtmlUnit supports WebDAV methods.
 * For progress on this issue see:
 * https://sourceforge.net/tracker/?func=detail&atid=448269&aid=1166661&group_id=47038
 *
 * @version $Id: $
 */
class HttpClientResponse
    implements WebResponse
{
    private URL url;
    private HttpMethodBase method;
    private int statusCode;
    private long loadTime;

    HttpClientResponse(URL url, HttpMethodBase method)
        throws IOException
    {
        long t0 = System.currentTimeMillis();
        this.url = url;
        this.method = method;
        HttpClient client = new HttpClient();
        statusCode = client.executeMethod(method);
        long t1 = System.currentTimeMillis();
        this.loadTime = t1-t0;
    }

    public int getStatusCode() {
        return statusCode;
    }

    public String getStatusMessage() {
        return method.getStatusText();
    }

    public String getContentType() {
        return method.getResponseHeader("Content-type").getValue();
    }

    public String getContentAsString() {
        try {
            return method.getResponseBodyAsString();
        }
        catch(IOException ex) {
            return null;
        }
    }

    public InputStream getContentAsStream() throws IOException {
        return method.getResponseBodyAsStream();
    }

    public URL getUrl() {
        return url;
    }

    public SubmitMethod getRequestMethod() {
    		// we'll implement this if/when we need it
		throw new Error("HttpClientResponse.getRequestMethod() is not implemented yet");
    }
    
    public List getResponseHeaders() {
		// we'll implement this if/when we need it
    		throw new Error("HttpClientResponse.getResponseHeaders() is not implemented yet");
    }
    
    public String getResponseHeaderValue(String headerName) {
        return method.getResponseHeader(headerName).getValue();
    }

    public long getLoadTimeInMilliSeconds() {
        return loadTime;
    }

    public String getContentCharSet() {
        return method.getResponseCharSet(); 
    }

    public byte[] getResponseBody() {
        try {
            return method.getResponseBody();
        }
        catch(IOException ex) {
            return null;
        }
    }
}