app.js

const express = require("express");
const { connect, get } = require("./utils/database");
const postsRouter = require("./routes/posts");

const cors = require("cors");
const app = express();

// cors (since FE and BE ports are different in dev mode)
// fixes other problems too
app.use(cors());

// request logger
app.use((req, res, next) => {
  console.log({
    url: req.url,
    time: new Date().toLocaleTimeString(),
  });
  next();
});

// set up input middlewares
app.use(express.json());

// static server
// Visit: `/public/check.txt` to check
app.use(
  "/public",
  express.static("./public", {
    extensions: ["html", "htm", "jpg"],
  })
);

// react build folder
// app.use(express.static("./frontend/build")); // CRA
app.use(express.static("./frontend/dist")); // Vite

app.get("/", (req, res, next) => {
  res.status(200).send("Server is running fine");
});

app.use("/posts", postsRouter);

// Error sink
app.get("/error-check", (req, res, next) => {
  throw new Error("error-check");
  // res.status(200).send("Server is running fine");
});
app.get("/error-check-async", (req, res, next) => {
  fetch("")
    .then(() => {})
    .catch((err) => next(err));
});
app.use((err, req, res, next) => {
  res.status(err.statusCode || 500).send(err || err.message || "500 error");

  console.log(res.statusCode, { err });
});

app.use((req, res) => {
  res.send("404");
});

connect()
  .then(() => {
    const PORT = process.env.PORT || 8080;
    app.listen(PORT, () => {
      console.log(`Backend server started on port ${PORT}`);
    });
  })
  .catch((error) => console.log("Server start failed!", { error }));