server.js

const { ApolloServer } = require("apollo-server");
const mongoose = require("mongoose");
const typeDefs = require("./typeDefs");
const resolvers = require("./resolvers");
const { findOrCreateUser } = require("./controllers/userController");
require("dotenv").config();

mongoose
	.connect(process.env.MONGO_URI, { useNewUrlParser: true })
	.then(_ => {
		console.log("DB connected");
	})
	.catch(err => console.error(err));

const server = new ApolloServer({
	typeDefs,
	resolvers,
	context: async ({ req }) => {
		let authToken = null;
		let currentUser = null;
		try {
			authToken = req.headers.authorization;
			if (authToken) {
				currentUser = await findOrCreateUser(authToken);
			}
		} catch {
			console.error(`Unable to authenticate user with token ${authToken}`);
		}
		return { currentUser };
	}
});

server.listen().then(({ url }) => console.log(`Server is listening on ${url}`));