/**
 * Configure dotenv:
 * https://www.npmjs.com/package/dotenv
 * 
 * Configure file updates with multer:
 * https://github.com/expressjs/multer
 * 
 * Configure CORS for use with localhost.
 */

require('dotenv').config()
const { GraphQLServer } = require('graphql-yoga')
const fileUpload = require('express-fileupload')
const jwt = require('jsonwebtoken')
const cookieParser = require('cookie-parser')
const { resolvers } = require('./src/resolvers')
const { db } = require('./src/db')

const server = new GraphQLServer({
  typeDefs: './schema.graphql',
  resolvers,
  context: req => ({
    ...req,
    db,
    debug: true
  })
})

server.express.use(cookieParser())

server.express.use((req, res, next) => {
  const { token } = req.cookies
  if (token) {
    const { userId } = jwt.verify(token, process.env.APP_SECRET)
    req.userId = userId
  }
  next()
})

server.express.use(async (req, res, next) => {
  if (!req.userId) return next()
  const user = await db.query.user(
    { where: { id: req.userId } },
    '{id, email, name}'
  )
  req.user = user
  next()
})

server.express.use(fileUpload())
server.express.post('/upload', (req, res) => {
  console.log(req.files)
})

server.start(
  {
    cors: {
      credentials: true,
      origin: process.env.FRONTEND_URL
    }
  },
  server => console.log(`Server is running on http://localhost:${server.port}`)
)