/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in
 * the documentation and/or other materials provided with the
 * distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 * any, must include the following acknowlegement:
 * "This product includes software developed by the
 * Apache Software Foundation (http://www.apache.org/)."
 * Alternately, this acknowlegement may appear in the software itself,
 * if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Ant", and "Apache Software
 * Foundation" must not be used to endorse or promote products derived
 * from this software without prior written permission. For written
 * permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 * nor may "Apache" appear in their names without prior written
 * permission of the Apache Group.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.tools.ant.taskdefs.optional.http;

import java.io.*;
import java.net.*;
import java.util.*;
import org.apache.tools.ant.*;

/**
 * this class does post of form content or raw files. you can have one
 * or the other -as soon as a file is specified all the other properties
 * are dropped on the floor.
 * a file post will have content type determined from the extension, you can
 * override it
 * @since ant1.5
 * @author matth@pobox.com Matt Humphrey
 * @author steve_l@iseran.com Steve Loughran
 * @created March 17, 2001
 */

public class HttpPost extends HttpTask {

    /**
     * file to upload. Null is ok
     */

    protected File postFile=null;

    /**
     * set the file to post
     */
    public void setUploadFile(File postFile) {
        this.postFile=postFile;
    }

     /**
      * query the post file
      * @return the file or null for 'not defined'
      */
    public File getUploadFile() {
        return postFile;
    }

    /**
     * content type. ignored when the file is null,
     * and even then we guess it if aint specified
     */

     private String contentType;

     /**
      * set the content type. Recommended if a file is being uploaded
      */
     public void setContentType(String contentType) {
         this.contentType=contentType;
     }

     /**
      * query the content type
      * @return the content type or null for 'not defined'
      */
     public String getContentType() {
         return contentType;
     }

     /**
     * override of test
     * @return false always
     */

    protected boolean areParamsAddedToUrl() {
        return false;
    }

    /**
     * this override of the base connect pumps
     * up the parameter vector as form data
     *
      * @param connection where to connect to
     * @exception BuildException build trouble
     * @exception IOException IO trouble
     */
    protected URLConnection doConnect(URLConnection connection)
        throws BuildException, IOException {

        if(postFile==null) {
            return doConnectFormPost(connection);
        }
        else {
            return doConnectFilePost(connection);
        }
    }

    /**
     * feed up the parameter vector as form data
     *
      * @param connection where to connect to
     * @exception BuildException build trouble
     * @exception IOException IO trouble
     */
    protected URLConnection doConnectFormPost(URLConnection connection)
        throws BuildException, IOException {

        log("Posting data as a form",Project.MSG_VERBOSE);
        // Create the output payload
        ByteArrayOutputStream byteStream = new ByteArrayOutputStream(256);
        PrintWriter out = new PrintWriter(byteStream);
        writePostData(out);
        out.flush();
        out.close();
        byte[] data=byteStream.toByteArray();
        //send it
        
        return doConnectWithUpload(connection,
                "application/x-www-form-urlencoded",
                byteStream.size(),
                new ByteArrayInputStream(data));
    }

    /**
     * feed up the data file
     *
      * @param connection where to connect to
     * @exception BuildException build trouble
     * @exception IOException IO trouble
     */
    protected URLConnection doConnectFilePost(URLConnection connection)
        throws BuildException, IOException {
        int size=(int)postFile.length();
        log("Posting file "+postFile,Project.MSG_VERBOSE);
        InputStream instream=new FileInputStream(postFile);
        String type=contentType;
        if(type==null) {
            type=ContentGuesser.guessContentType(postFile.getName());
        }
        return doConnectWithUpload(connection,
                type,
                size,
                instream);
    }


    /**
     * write out post data in form mode
     *
     * @param out Description of Parameter
     */
    protected void writePostData(PrintWriter out) {
        HttpRequestParameter param;
        Vector params=getRequestParameters();
        for (int i = 0; i < params.size(); i++) {
            if (i > 0) {
                out.print('&');
            }
            param = (HttpRequestParameter) params.get(i);
            out.print(param.toString());
            log("parameter : "+param.toString(),Project.MSG_DEBUG);
        }
    }

     /**
     * this must be overridden by implementations
     * to set the request method to GET, POST, whatever
     * @return the method string
     */
     public String getRequestMethod() {
         return "POST";
     }


}