server.js

// definisikan dependency yang dibutuhkan
const express = require("express");
const app = express();
const multer = require("multer");
//untuk menambahkan path
const path = require("path");

// menentukan lokasi pengunggahan
const diskStorage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, path.join(__dirname, "public/uploads"));
  },
  filename: function (req, file, cb) {
    cb(
      null,
      file.fieldname + "-" + Date.now() + path.extname(file.originalname)
    );
  },
});

const contacts = [
  {
    name: "amir",
    phone: "085482938471",
  },
  {
    name: "budi",
    phone: "086452738493",
  },
];

function validateIndex(req, res, next) {
  if (
    req.query.index !== undefined &&
    contacts[req.query.index] === undefined
  ) {
    res.send({ success: false });
  } else {
    next();
  }
}

app.use(validateIndex);
app.use(express.json());

app.get("/contact", function (req, res) {
  res.send(contacts);
});

app.post("/contact", function (req, res) {
  contacts.push({ name: req.body.name, phone: req.body.phone });
  res.send({ success: true });
});

app.put("/contact", function (req, res) {
  contacts[req.query.index] = { name: req.body.name, phone: req.body.phone };
  res.send({ success: true });
});

app.delete("/contact", function (req, res) {
  contacts.splice(req.query.index, 1);
  res.send({ success: true });
});

// menerapkan middleware multer hanya pada rute berikut
app.put(
  "/contact/upload",
  multer({ storage: diskStorage }).single("photo"),
  (req, res) => {
    const file = req.file.path;
    console.log(file);
    if (!file) {
      res.status(400).send({
        status: false,
        data: "No File is selected.",
      });
    }
    // menyimpan lokasi upload data contacts pada index yang diinginkan
    contacts[req.query.index].photo = req.file.path;
    res.send(file);
  }
);

app.listen(3000, function () {
  console.log("server running");
});