const express = require("express");
const dotenv = require("dotenv");
const bodyParser = require("body-parser");
const jwt = require("jsonwebtoken");

// Initialize app
const app = express();

// Load environment variables from .env file
dotenv.config();

// Middleware for parsing JSON
app.use(bodyParser.json());

// Middleware to check JWT token for protected routes
const authenticateToken = (req, res, next) => {
  const token = req.header("Authorization")?.split(" ")[1]; // Get token from header

  if (!token) {
    return res.status(403).send("A token is required for authentication");
  }

  try {
    const jwtSecretKey = process.env.JWT_SECRET_KEY || "defaultSecretKey";
    const verified = jwt.verify(token, jwtSecretKey);
    req.user = verified; // Store user data in req object
  } catch (err) {
    return res.status(401).send("Invalid token");
  }
  next();
};

// Import routes
const popcenRoutes = require("./api/routes/popcen");
const popcenCountRoutes = require("./api/routes/popcenCount");
const userRoutes = require("./api/routes/user");
const registerRoutes = require("./api/routes/register"); // Register route

// Use routes
app.use("/user", userRoutes);
app.use("/user/register", registerRoutes);
app.use("/popcen", authenticateToken, popcenRoutes); // Protect popcen routes with JWT
app.use("/popcenCount", authenticateToken, popcenCountRoutes); // Protect popcenCount routes

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