/**
 * 
 */
package org.cipres.ws;

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.multipart.FilePart;
import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;
import org.apache.commons.httpclient.methods.multipart.Part;
import org.apache.commons.httpclient.methods.multipart.StringPart;

/**
 * This the client program to send multipart message to the web server using HttpClient
 * 
 * You can also use apache's TCPMon to monitor the TCP traffic between client and server
 * + From the Admin tab:
 *   + Listen Port # 3333 (acts as the proxy, all traffic redirects to this port)
 *   + Listener:
 *     + Target Hostname: lcchan-linux.sdsc.edu
 *     + Target Port #:   8888
 * + sent the Listener port 3333 in your client program (i.e. this program) to watch the traffic packages
 * 
 * @author lcchan
 *
 */
public class SendHttpPost {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String url = "http://lcchan-linux.sdsc.edu:8888/cipres-web/submit";
		//String url = "http://localhost:3333";
		
		HttpClient client = new HttpClient();
		PostMethod method = new PostMethod(url);
		BufferedReader reader = null;
		
		try
		{
			// Send multiple data to servlet
			File file1 = new File("/tmp/input/test.1");
			File file2 = new File("/tmp/input/test.2");
			Part[] parts = {
				new StringPart("email","lcchan@sdsc.edu"),
				new StringPart("analysis", "MP"),
				new FilePart(file1.getName(), file1),
				new FilePart(file2.getName(), file2)
			};
			method.setRequestEntity(new MultipartRequestEntity(parts, method.getParams()));
			client.executeMethod(method);
			
			// read response from servlet
			System.out.println("Beginning status from response ");
			System.out.println("status code: " + method.getStatusCode());
			System.out.println("status line: " + method.getStatusLine());
			System.out.println("status text: " + method.getStatusText());
			System.out.println("body       : " + method.getResponseBodyAsString());
			System.out.println(" end of servlet response");
			
			// if multiple lines have been sent
			InputStream in = method.getResponseBodyAsStream();
			reader = new BufferedReader(new InputStreamReader(in));
			String line;
			StringBuffer buffer = new StringBuffer();
			while ((line = reader.readLine()) != null)
			{
				buffer.append(line);
				buffer.append("\n");
			}
			System.out.println("response from servlet...." + buffer.toString());
		}
		catch (Exception ex)
		{
			System.out.println("++++ POST Exception: " + ex.toString());
		}
		finally 
		{
			// clean up
			method.releaseConnection();
			try {reader.close();} catch(Exception ex){}
		}
	}

}