/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002 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.email;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintStream;

/**
 * Class representing an email message.
 *
 * @author roxspring@yahoo.com Rob Oxspring
 * @since 1.5
 */
public class Message
{
    private File messageSource = null;
    private StringBuffer buffer = new StringBuffer();
    private String mimeType = "text/plain";
    private boolean specified = false;

    /** creates a new empty message
     */
    public Message()
    {
    }

    /** Creates a new message based on the given string
     * @param text the message
     */
    public Message( String text )
    {
        addText( text );
    }

    /** Creates a new message using the contents of the given file.
     * @param file the source of the message
     */
    public Message( File file )
    {
        messageSource = file;
    }

    /** Adds a textual part of the message
     * @param text some text to add
     */
    public void addText( String text )
    {
        buffer.append( text );
    }

    /** Sets the source file of the message
     * @param src the source of the message
     */
    public void setSrc( File src )
    {
        this.messageSource = src;
    }

    /** Sets the content type for the message
     * @param mimeType a mime type e.g. "text/plain"
     */
    public void setMimeType( String mimeType )
    {
        this.mimeType = mimeType;
        specified = true;
    }

    /** Returns the content type
     * @return the mime type
     */
    public String getMimeType()
    {
        return mimeType;
    }

    /** prints the message onto an output stream
     * @param out The print stream to write to
     * @throws IOException if an error occurs
     */
    public void print( PrintStream out )
        throws IOException
    {
        if( messageSource != null )
        {
            // Read message from a file
            FileReader freader = new FileReader( messageSource );
            try
            {
                BufferedReader in = new BufferedReader( freader );
                String line = null;

                while( ( line = in.readLine() ) != null )
                {
                    out.println( line );
                }
            }
            finally {
                freader.close();
            }
        }
        else
        {
            out.println( buffer );
        }
    }

    /** returns true iff the mimeType has been set.
     * @return false if the default value is in use
     */
    public boolean isMimeTypeSpecified()
    {
        return specified;
    }
}