package framework.fileUpload;

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

import javax.servlet.http.HttpServletRequest;

import framework.startup.FrameUtil;

/**
 * 上传文件之后，使用该类获取上传的文件
 * 
 * @author liuyajun, 8384503@qq.com
 * @date 2016年2月2日
 * @time 下午1:50:58
 */
public class FileUploadHelper {
	
	public final static String SPLIT = "/";
	public final static String INPUT_NAME = "uploadFileSuccessInfo";
	
	/**
	 * 通过上传控件的名称过滤上传文件，<input type="file" name="inputName" ...
	 * @param uploadList
	 * @param inputName
	 * @return
	 */
	public static List<UploadFile> getUploadFileByInputName(
			List<UploadFile> uploadList, String inputName) {
		if(uploadList ==null || uploadList.size()==0){
			return null;
		}
		List<UploadFile> list = new ArrayList<UploadFile>();
		for(UploadFile file : uploadList){
			if(file.inputName.equals(inputName)){
				list.add(file);
			}
		}
		
		return list;
	}
	/**
	 * 获取上传的全部文件
	 * @param request
	 * @return
	 */
	public static List<UploadFile> getAllUploadFile(HttpServletRequest request){
		String fileInfo = request.getParameter(INPUT_NAME);
		if(fileInfo ==null || fileInfo.trim().length()==0){
			return null;
		}
		
		String uploadPath = FrameUtil.getUploadFilePath();
		
		String[] fileArray = fileInfo.split(SPLIT+SPLIT);
		List<UploadFile> list = new ArrayList<UploadFile>();
		for(String fa : fileArray){
			if(fa ==null || fa.trim().length()==0){
				continue;
			}
			
			String[] sa = fa.split(SPLIT);
			if(sa.length !=3){
				continue;
			}
			
			UploadFile file = new UploadFile();
			file.inputName = sa[0].trim();
			file.file = new File(uploadPath + sa[1].trim());
			file.originalName = sa[2].trim();
			
			list.add(file);
		}
		
		return list;
	}
	
	public static class UploadFile {
		private String inputName;
		private File file;
		private String originalName;
		
		
		public String getInputName() {
			return inputName;
		}

		public File getFile() {
			return file;
		}

		public String getOriginalName() {
			return originalName;
		}
	}
}