package de.tu_dresden.inf.ggp06_2.connection;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.util.Properties;

/**
 * HTTP response. Return one of these from serve().
 */
public class Response {
    
    /**
     * Some HTTP response status codes
     */
    public static final String HTTP_OK             = "200 OK";
    public static final String HTTP_REDIRECT       = "301 Moved Permanently";
    public static final String HTTP_FORBIDDEN      = "403 Forbidden"; 
    public static final String HTTP_NOTFOUND       = "404 Not Found";
    public static final String HTTP_BADREQUEST     = "400 Bad Request";
    public static final String HTTP_INTERNALERROR  = "500 Internal Server Error";
    public static final String HTTP_NOTIMPLEMENTED = "501 Not Implemented";

    /**
     * HTTP status code after processing, e.g. "200 OK", HTTP_OK
     */
    public String      status;

    /**
     * MIME type of content, e.g. "text/html"
     */
    public String      mimeType;

    /**
     * Data of the response, may be null.
     */
    public InputStream data;

    /**
     * Headers for the HTTP response. Use addHeader() to add lines.
     */
    public Properties  header = new Properties();

    /**
     * Default constructor: response = HTTP_OK, data = mime = 'null'
     */
    public Response() {
        this.status = HTTP_OK;
    }

    /**
     * Basic constructor.
     */
    public Response(String status, String mimeType, InputStream data) {
        this.status   = status;
        this.mimeType = mimeType;
        this.data     = data;
    }

    /**
     * Convenience method that makes an InputStream out of given text.
     */
    public Response(String status, String mimeType, String txt) {
        this.status   = status;
        this.mimeType = mimeType;
        this.data     = new ByteArrayInputStream( txt.getBytes() );
    }

    /**
     * Adds given line to the header.
     */
    public void addHeader(String name, String value) {
        header.put( name, value );
    }

}