package jaction.utility;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Locale;
import java.util.Map;
import java.io.File;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.PageContext;
import javax.servlet.ServletException;

import jaction.utility.SysLogger;
import jaction.utility.FileUtil;
import jaction.upload.*;
import jaction.workspace.JactionConfigResource;




/**
 * HttpRequest 請求工具類<br>
 * @author yanger
 * @version 1.4.2.4
*/
public class RequestUtil extends Object  {




	/**
	 * 得到request中的所有參數(shù)
	 * @param request http請求接口
	 * @return map 參數(shù)map
	 */
	public static Map getAllParameters(HttpServletRequest request)   {
	
		Map bufferMap = Collections.synchronizedMap(new HashMap());
			try{
				for (Enumeration em = request.getParameterNames() ; em.hasMoreElements() ;) {
					String name = (String)(em.nextElement());
					String[] values = request.getParameterValues(name);
					String[] temp = new String[values.length];
					//chinese
					for(int i=0;i<values.length;i++){
						values[i] = StringUtil.CharSetConvert(values[i],StringUtil.ISO_8859_1,StringUtil.GBK);
						temp[i]=values[i];
					}

					bufferMap.put(name,temp);
				}
				for (Enumeration em = request.getAttributeNames() ; em.hasMoreElements() ;) {
					String name = (String)(em.nextElement());
					Object object = request.getAttribute(name);
					bufferMap.put(name,object);
				}
				
			}catch(Exception e){
				SysLogger.error("RequestUtil","getAllParameters","Exception:"+e);
				e.printStackTrace();

		    }

			//upload init
			//weigang 20030511 判斷是否是上傳文件
			if(request.getContentLength() > 0){
				multipartRequest(request,bufferMap);
			}


		return bufferMap;

	}
	/**
	 * 得到request的servletPath
	 * @param request http請求接口
	 * @return String servletName(沒有擴展名)
	 */
	 public static String getServletNameNoExtend(HttpServletRequest request){
		String servletPath =  request.getServletPath();
		int virguleIndex = servletPath.indexOf('/'); 
		int dotIndex = servletPath.indexOf('.'); 
		String servletName = "";
		if(dotIndex==-1){
			//servlet沒有擴展名
			servletName = servletPath.substring(virguleIndex+1);
		}else{
			servletName = servletPath.substring(virguleIndex+1, dotIndex); 
		}
		return servletName;
	 }
	 /**
	 * 得到request的servletPath
	 * @param request http請求接口
	 * @return String servletName(有擴展名)
	 */
	 public static String getServletName(HttpServletRequest request){
		String servletPath =  request.getServletPath();
		int virguleIndex = servletPath.indexOf('/'); 
		String servletName = servletPath.substring(virguleIndex+1); 
		return servletName;
	 }
    /**
     * This method populates the internal hashtables with multipart request data.
     * If the request argument is an instance of MultipartRequestWrapper,
     * the request wrapper will be populated as well.
	 * @param request HttpServletRequest接口
	 * @param bufferMap 數(shù)據(jù)集
     */
    public static void multipartRequest(HttpServletRequest request,Map bufferMap)  {


			try{
				//deleteTempFiles
				deleteTempFiles(getTempDir());


				MultipartIterator iterator = new MultipartIterator(request,4096,getMaxSize(),getTempDir());
				MultipartElement element;

				while ((element = iterator.getNextElement()) != null) {
					if (!element.isFile()) {
					
						if (request instanceof MultipartRequestWrapper) {
							((MultipartRequestWrapper) request).setParameter(element.getName(),
																			 element.getValue());
						}
						String[] textValues = (String[]) bufferMap.get(element.getName());
							
						if (textValues != null) {
							String[] textValues2 = new String[textValues.length + 1];
							System.arraycopy(textValues, 0, textValues2, 0, textValues.length);
							textValues2[textValues.length] = element.getValue();
							textValues = textValues2;
						}else {
							textValues = new String[1];
							textValues[0] = element.getValue();
						}
						bufferMap.put(element.getName(), textValues);
						bufferMap.put(element.getName(), textValues);
						}else {
                           File tempFile = element.getFile();
							 if (tempFile.exists()) {
								 DiskFile theFile = new DiskFile(tempFile.getAbsolutePath());
								 theFile.setContentType(element.getContentType());
								 theFile.setFileName(element.getFileName());
								 theFile.setFileSize((int) tempFile.length());
								 bufferMap.put(element.getName(), theFile);
								 bufferMap.put(element.getName(), theFile);
							 }             
						}
					}
				}catch(Exception e){
						e.printStackTrace();
						SysLogger.error("RequestUtil","multipartRequest","Exception:"+e);
				}
				//
	}
    /**
     * Gets the maximum post data size in bytes from the string
     * representation in ActionServlet
     */
    protected static long getMaxSize() throws ServletException{
        String stringSize = JactionConfigResource.getMessage("jaction.upload.maxFileSize");
        long size = -1;
        int multiplier = 1;
        
        if (stringSize.endsWith("K")) {
            multiplier = 1024;
            stringSize = stringSize.substring(0, stringSize.length()-1);
        }
        if (stringSize.endsWith("M")) {
            multiplier = 1024*1024;
            stringSize = stringSize.substring(0, stringSize.length()-1);
        }
        else if (stringSize.endsWith("G")) {
            multiplier = 1024*1024*1024;
            stringSize = stringSize.substring(0, stringSize.length()-1);
        }
        
        try {
            size = Long.parseLong(stringSize);
        }
        catch (NumberFormatException nfe) {
            throw new ServletException("Invalid format for maximum file size: \"" +
                stringSize + "\"");
        }
                
        return (size * multiplier);
    }       
    /**
     * Gets the temp dir of upload
     */
    protected static String getTempDir() throws ServletException{
		return JactionConfigResource.getMessage("jaction.upload.tempdir");

	}

	/**
     * Delete all the files uploaded
     */
    public static void deleteTempFiles(String dir) {
		File tempdir = new File(dir);
		if(!tempdir.isDirectory())return;
		File[] fileList = tempdir.listFiles();
		for(int i=0;i<fileList.length;i++){
			if(fileList[i].getName().endsWith(".tmp")){
				if(fileList[i].exists())
						fileList[i].delete();
			}
		}
    }
}