server.js

import express from "express";
import dotenv from "dotenv";
import connectDb from "./config/db.js";
import authRoutes from "./routes/authRoutes.js";
import sessionRoutes from "./routes/sessionRoutes.js";
import userRoutes from "./routes/userRoutes.js"; // import userRoutes
import notesRoutes from "./routes/notesRoutes.js";

// Load environment variables
dotenv.config();

// Check for MONGO_URI
if (!process.env.MONGO_URI) {
  console.error("Error: MongoDB URI is missing in environment variables.");
  process.exit(1); // Exit the process with an error
}

// Connect to the database
connectDb();

const app = express();

// Middleware for parsing JSON and URL-encoded data
app.use(express.json());
app.use(express.urlencoded({ extended: true }));

//For signup, login
app.use('/auth', authRoutes);

app.use("/api/users", userRoutes); 

app.use("/session", sessionRoutes);

app.use("/notes", notesRoutes);

// Root route

app.get("/", (req, res) => {
  res.status(200).send("Hello World!");
});


app.use((err, req, res, next) => {
  console.error(err);
  res.status(err.statusCode || 500).json({
    message: err.message || "Internal Server Error",
  });
});

const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
  console.log(`Server is running on port ${PORT}`);
});

export default app; // to use for testing