const express = require('express');
const router = express.Router();
const multer = require('multer');
const path = require('path');

// rotating filename
const nMaxPhotos = 100;
var photoCounter = 0;
const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, './uploads');
  },
  filename: function (req, file, cb) {
    filename = path.parse(file.originalname).name + "-" +
      (photoCounter % nMaxPhotos).toString().padStart(2, '0') + ".jpg";
    cb(null, filename);
    photoCounter += 1;
  }
});

const upload = multer({ storage: storage });

router.post('/', upload.single('photo'), (req, res) => {
  if (req.file) {
    console.log("Received photo, saved as:", req.file.path, ", size:",
      req.file.size);
    res.sendStatus(200);
  } else {
    res.sendStatus(400);
  }
});

module.exports = router;