package com.iamberry.rst.utils;

import org.springframework.web.multipart.commons.CommonsMultipartFile;

import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * 文件上传
 */
public class UploadFileUtils {
    private static UploadFileUtils uploadFileUtils = new UploadFileUtils();
    public static UploadFileUtils getUf(){
        return  uploadFileUtils;
    }

    private final Map<String,String> map = new HashMap<String,String>();

    private UploadFileUtils(){
        map.put("scmOrder","scmOrder");
    };

    /**
     * 获取路径
     * @param uploadType
     * @param soonPath
     * @return
     */
    public String getAllpath(String uploadType,String soonPath){
        String path = "";
        for (Map.Entry<String, String> entry: map.entrySet()) {
            if(entry.getKey().equals(uploadType)){
                path = "common/" +entry.getValue() + soonPath;
            }
        }
        if("".equals(path)){
            if(soonPath ==null || "".equals(soonPath)){
                SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
                soonPath = sdf.format(new Date());
            }
            path = "common/other/"+soonPath +"/";
        }
        return path;
    }

    /**
     * 文件上传
     * @param uploadType
     * @param rootPath
     * @param soonPath
     * @param name
     * @param file
     * @return
     */
    public String upload(String uploadType, String rootPath, String soonPath, String name, CommonsMultipartFile file){
        Integer flag = 0;
        String path = getAllpath(uploadType,soonPath);  //common/scmOrder/upload/2019-02-21/
        try {
            File targetFile = new File(rootPath + path);
            if (!targetFile.exists()) {
                targetFile.mkdirs();
            }
            //获取输出流
            OutputStream os=new FileOutputStream(rootPath+path+name);

            //获取输入流 CommonsMultipartFile 中可以直接得到文件的流
            InputStream is = file.getInputStream();
            byte[] bts = new byte[1024];
            //一个一个字节的读取并写入
            while(is.read(bts)!=-1)
            {
                os.write(bts);
            }
            os.flush();
            os.close();
            is.close();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return path+name;
    }

    /**
     * 上朵牙刷定制的图片上传
     * @param name
     * @param file
     * @return
     */
    public static String scmUploadFile(String rootPathh, String name, CommonsMultipartFile file){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
        String soonPath = "/upload/"+ sdf.format(new Date()) + "/";
        String path = UploadFileUtils.getUf().upload("scmOrder",rootPathh,soonPath,name,file);
        return path;
    }

}