app.js

const express = require('express');
const bodyParser = require('body-parser');
const graphqlHttp = require('express-graphql');
const mongoose = require('mongoose');
const isAuth = require('./middleware/is-auth');

const graphQlSchema = require('./graphql/schema');
const graphQlResolvers = require('./graphql/resolvers');

const app = express();
const PORT = 8000;

mongoose.connect(process.env.MONGO_URI).then(() => {
  console.log("Successfully connected to the database");
}).catch(err => {
  console.log('Could not connect to the database. Exiting now...');
  process.exit();
});

app.use(bodyParser.json());


app.use((req, res, next) => {
  res.setHeader('Access-Control-Allow-Origin', '*');
  res.setHeader('Access-Control-Allow-Methods', 'POST,GET,OPTIONS');
  res.setHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization');
  if (req.method === 'OPTIONS') {
    return res.sendStatus(200);
  }
  next();
});
app.use(isAuth);


app.use('/graphql', graphqlHttp({
  schema: graphQlSchema,
  rootValue: graphQlResolvers,
  graphiql: true
}));

app.listen(PORT, () => {
  console.log("Running express server on ", PORT);
});

module.exports = app; // for testing