package com.sincere.student.controller;

import com.sincere.student.utils.HttpClientUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

@Controller
public class IndexController {

    @RequestMapping("index")
    public String index(){
        return "index" ;
    }

    @ResponseBody
    @RequestMapping(value = "upload" ,method = RequestMethod.POST)
    public String upload(@RequestParam("file") MultipartFile file) throws Exception{
        //return file.getOriginalFilename() ;
        return HttpClientUtils.upload("http://121.40.109.21:8083/file-center/file/fileUpload",multipartFileToFile(file),file.getOriginalFilename());
    }

    public File multipartFileToFile(MultipartFile file) throws Exception {

        File toFile = null;
        if (file.equals("") || file.getSize() <= 0) {
            file = null;
        } else {
            InputStream ins = null;
            ins = file.getInputStream();
            toFile = new File(file.getOriginalFilename());
            inputStreamToFile(ins, toFile);
            ins.close();
        }
        return toFile;
    }

    private void inputStreamToFile(InputStream ins, File file) {
        try {
            OutputStream os = new FileOutputStream(file);
            int bytesRead = 0;
            byte[] buffer = new byte[8192];
            while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
                os.write(buffer, 0, bytesRead);
            }
            os.close();
            ins.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}