package kr.co.i4way.manage.util;

import java.io.File;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

import kr.co.i4way.manage.model.FormBasedFileVo;

/**
 * @Class Name  : EgovFileUploadUtil.java
 * @Description : Spring 기반 File Upload 유틸리티
 * @Modification Information
 *
 *     수정일         수정자                   수정내용
 *     -------          --------        ---------------------------
 *   2009.08.26       한성곤                  최초 생성
 *
 * @author 공통컴포넌트 개발팀 한성곤
 * @since 2009.08.26
 * @version 1.0
 * @see
 */
public class FileUploadUtil extends FormBasedFileUtil {
    /**
     * 파일을 Upload 처리한다.
     *
     * @param request
     * @param where
     * @param maxFileSize
     * @return
     * @throws Exception
     */
    @SuppressWarnings("unchecked")
    public static List<FormBasedFileVo> uploadFiles(HttpServletRequest request, String where, long maxFileSize) throws Exception {
	List<FormBasedFileVo> list = new ArrayList<FormBasedFileVo>();

	MultipartHttpServletRequest mptRequest = (MultipartHttpServletRequest)request;
	Iterator fileIter = mptRequest.getFileNames();

	while (fileIter.hasNext()) {
	    MultipartFile mFile = mptRequest.getFile((String)fileIter.next());

	    FormBasedFileVo vo = new FormBasedFileVo();

	    String tmp = mFile.getOriginalFilename();

            if (tmp.lastIndexOf("\\") >= 0) {
        	tmp = tmp.substring(tmp.lastIndexOf("\\") + 1);
            }

            vo.setFileName(tmp);
            vo.setContentType(mFile.getContentType());
            vo.setServerSubPath(getTodayString());
            vo.setPhysicalName(getPhysicalFileName());
            vo.setSize(mFile.getSize());

            if (tmp.lastIndexOf(".") >= 0) {
       	 	vo.setPhysicalName(vo.getPhysicalName());	// 2012.11 KISA 보안조치
            }

            if (mFile.getSize() > 0) {
            	InputStream is = null;
            	
            	try {
            		is = mFile.getInputStream();
            		saveFile(is, new File(WebUtil.filePathBlackList(where+SEPERATOR+vo.getServerSubPath()+SEPERATOR+vo.getPhysicalName())));
            	} finally {
            		if (is != null) {
            			is.close();
            		}
            	}
            	list.add(vo);
            }
	}

	return list;
    }
}