src/server/Model/Job.hs


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module Model.Job
  ( getLastExecution
  , actualizeLastExecution
  ) where

import Control.Monad.IO.Class (liftIO)

import Data.Time.Clock (UTCTime, getCurrentTime)
import Data.Maybe (isJust)

import Database.Persist

import Model.Database
import Model.JobKind

getLastExecution :: JobKind -> Persist (Maybe UTCTime)
getLastExecution kind = do
  mbJob <- fmap entityVal <$> selectFirst [JobKind ==. kind] []
  return (mbJob >>= jobLastExecution)

actualizeLastExecution :: JobKind -> Persist ()
actualizeLastExecution kind = do
  now <- liftIO getCurrentTime
  jobKindDefined <- isJust <$> selectFirst [JobKind ==. kind] []
  if jobKindDefined
    then updateWhere [JobKind ==. kind] [JobLastExecution =. Just now]
    else insert (Job kind (Just now)) >> return ()