module Job.MonthlyPayment
  ( monthlyPayment
  ) where

import Control.Monad.IO.Class (liftIO)

import Data.Time.Clock (UTCTime, getCurrentTime)

import Database.Persist (entityVal, insert)

import Model.Database
import qualified Model.Payment as Payment
import Model.Frequency

import Utils.Time (timeToDay)

monthlyPayment :: Maybe UTCTime -> IO UTCTime
monthlyPayment _ = runDb $ do
  monthlyPayments <- map entityVal <$> Payment.listMonthly
  now <- liftIO $ getCurrentTime
  actualDay <- liftIO $ timeToDay now
  let punctualPayments = map (\p -> p { paymentFrequency = Punctual, paymentDate = actualDay, paymentCreatedAt = now }) monthlyPayments
  _ <- sequence $ map insert punctualPayments
  return now