package self.me.common.utils;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.commons.io.FilenameUtils;
import org.apache.log4j.Logger;
import org.springframework.web.multipart.MultipartFile;

import com.alibaba.druid.util.StringUtils;

public class FileUtil {
	
	private static Logger logger = Logger.getLogger(FileUtil.class);
	
	/**
	 * 保存图片至目录
	 * @param imgFile
	 * @return
	 * @throws Exception
	 */
	public static String saveFile(MultipartFile imgFile) throws Exception{
		String filepath="";
		String fileName = imgFile.getOriginalFilename();
		if(StringUtils.isEmpty(fileName)){
			logger.error("没选择文件.");
			return filepath;
		}
		try {
			String ext=FilenameUtils.getExtension(fileName);   //获取文件后缀
			ext = ext.toLowerCase();							//将文件后缀改为小写
			int random = (int) (Math.random()*100);
			String workTime=new SimpleDateFormat("yyyyMMdd").format(new Date());//当前时间 作为文件夹
			String workTime_fileName=new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());//当前时间// 作为文件名
			File file=creatFolder(Constants.FILE_SAVE_PATH,workTime, workTime_fileName+random+"."+ext);
			imgFile.transferTo(file);       
			filepath= Constants.FILE_SHOW_PATH_SUFFIX+"/"+workTime+"/"+workTime_fileName+random+"."+ext;
			return filepath;
		} catch (IOException e) {
			logger.error(fileName+"：的文件上传失败!reason="+e.getMessage());
			e.printStackTrace();
		}
		return null;
	}
	
	
	/**     
	 * creatFolder(创建目录)    
	 */
	public static File creatFolder(String path ,String brandName,String fileName) {   
		File file = null;   
		
		File firFoler=new File(path);
		if(firFoler.exists()){
			File firstFolder = new File(path);         //一级文件夹   
			if(firstFolder.exists()) {                             //如果一级文件夹存在，则检测二级文件夹   
				File secondFolder = new File(firstFolder,brandName);   
				if(secondFolder.exists()) {                        //如果二级文件夹也存在，则创建文件   
					file = new File(secondFolder,fileName);   
				}else {                                            //如果二级文件夹不存在，则创建二级文件夹   
					secondFolder.mkdir();   
					file = new File(secondFolder,fileName);        //创建完二级文件夹后，再合建文件   
				}   
			}else {                                                //如果一级不存在，则创建一级文件夹   
				firstFolder.mkdir();   
				File secondFolder = new File(firstFolder,brandName);   
				if(secondFolder.exists()) {                        //如果二级文件夹也存在，则创建文件   
					file = new File(secondFolder,fileName);   
				}else {                                            //如果二级文件夹不存在，则创建二级文件夹   
					secondFolder.mkdir();   
					file = new File(secondFolder,fileName);   
				}   
			} 
		}else{
			firFoler.mkdir();
			File firstFolder = new File(path);         //一级文件夹   
			if(firstFolder.exists()) {                             //如果一级文件夹存在，则检测二级文件夹   
				File secondFolder = new File(firstFolder,brandName);   
				if(secondFolder.exists()) {                        //如果二级文件夹也存在，则创建文件   
					file = new File(secondFolder,fileName);   
				}else {                                            //如果二级文件夹不存在，则创建二级文件夹   
					secondFolder.mkdir();   
					file = new File(secondFolder,fileName);        //创建完二级文件夹后，再合建文件   
				}   
			}else {                                                //如果一级不存在，则创建一级文件夹   
				firstFolder.mkdir();   
				File secondFolder = new File(firstFolder,brandName);   
				if(secondFolder.exists()) {                        //如果二级文件夹也存在，则创建文件   
					file = new File(secondFolder,fileName);   
				}else {                                            //如果二级文件夹不存在，则创建二级文件夹   
					secondFolder.mkdir();   
					file = new File(secondFolder,fileName);   
				}   
			}   
		}
		
		
		return file;   
	}

}