import mongoose from 'mongoose'
import { BookingSchema, BookerSchema } from './schema'
import { getDays } from '../lib/dateHelper'

mongoose.connect(process.env.MONGO_URI, {
  useNewUrlParser: true,
  useUnifiedTopology: true,
  connectTimeoutMS: 1000,
  serverSelectionTimeoutMS: 5000,
})

if (process.env.NODE_ENV !== 'production') {
  mongoose.modelNames().includes('Booker') && mongoose.deleteModel('Booker')
  mongoose.modelNames().includes('Booking') && mongoose.deleteModel('Booking')
}

export const Booker = mongoose.model('Booker', BookerSchema)
export const Booking = mongoose.model('Booking', BookingSchema)

export async function getBookedDays() {
  const bookings = await Booking.find({
    status: { $ne: 'rejected' },
    $or: [{ endDate: { $gt: new Date() } }, { startDate: { $gt: new Date() } }],
  }).exec()

  return bookings
    .reduce((acc, booking) => {
      acc.push(
        getDays({ startDate: booking.startDate, endDate: booking.endDate })
      )
      return acc
    }, [])
    .flat()
}

export async function createBooking({ name, email, startDate, endDate }) {
  const ignoreCaseEmailMatcher = new RegExp(email, 'i')
  let booker = await Booker.findOne({ email: ignoreCaseEmailMatcher }).exec()
  if (!booker) {
    booker = new Booker({ name, email })
    await booker.save()
  }

  const booking = new Booking({ startDate, endDate, booker: booker._id })
  await booking.save()
  await booking.populate('booker').execPopulate()
  return booking.toJSON({ getters: true, virtuals: true })
}