module Job.WeeklyReport
  ( weeklyReport
  ) where

import           Data.Time.Clock        (UTCTime, getCurrentTime)

import           Conf                   (Conf)
import qualified Model.Income           as Income
import qualified Model.Payment          as Payment
import qualified Model.Query            as Query
import qualified Model.User             as User
import qualified SendMail
import qualified View.Mail.WeeklyReport as WeeklyReport

weeklyReport :: Conf -> Maybe UTCTime -> IO UTCTime
weeklyReport conf mbLastExecution = do
  now <- getCurrentTime
  case mbLastExecution of
    Nothing -> return ()
    Just lastExecution -> do
      (payments, incomes, users) <- Query.run $
        (,,) <$>
          Payment.modifiedDuring lastExecution now <*>
          Income.modifiedDuring lastExecution now <*>
          User.list
      _ <- SendMail.sendMail (WeeklyReport.mail conf users payments incomes lastExecution now)
      return ()
  return now