// Util function : /utils/connectDb.js
// Use in routes handler like:
// import connectDb from '../../utils/connectDb'
// connectDb()
// ...stuff

import mongoose from 'mongoose'
const connection = {}

async function connectDb() {
  if (connection.isConnected) {
      console.log(`Using existing connection.`)
      return
  }
  const db = await mongoose.connect(process.env.MONGO_SRV, {
    useCreateIndex: true,
    useFindAndModify: false,
    useNewUrlParser: true,
    useUnifiedTopology: true
  })
  console.log(`DB created`)
  connection.isConnected = db.connections[0].readyState
}

export default connectDb