index.js

require("dotenv").config();
const express = require("express");
const app = express();
const cors = require("cors");
const bodyParser = require("body-parser");
const errorHandler = require("./handlers/error");
const authRoutes = require("./routes/auth");
const messagesRoutes = require("./routes/messages");
const { loginRequired, ensureCorrectUser } = require("./middleware/auth");
const db = require("./models");

const PORT = 8081;

app.use(cors());
app.use(bodyParser.json());

//routes
app.use("/api/auth", authRoutes);
app.use("/api/users/:id/messages", 
	loginRequired,
	ensureCorrectUser,
	messagesRoutes
)

app.get("/api/messages", loginRequired, async function(req, res, next){
	try{
		let messages = await db.Message.find()
			.sort({ createdAt: "desc"})
			.populate("user",{
				username: true,
				profileImageUrl: true
			});
		return res.status(200).json(messages);	
	}
	catch(err){
		return next(err);
	}
});
app.use(function(req,res,next){
	let err = new Error("Not Found");
	err.status = 404;
	next(err);
});
app.use(errorHandler);



app.listen(PORT, function() {
	console.log(`server started at ${PORT}`);
});