suntheme/app/Pure.hs
q9i 4f0db471bc refactor: create time module
move time-related functions from `Main.hs` to a new `Time` module for better
organization and code separation
2024-07-22 14:47:11 -07:00

28 lines
923 B
Haskell

module Pure where
import Data.Time (ZonedTime)
import Data.Time.RFC3339 (formatTimeRFC3339)
import Data.Time.LocalTime (zonedTimeToUTC)
readLines :: [String] -> Maybe (String, Double, Double, String)
readLines [msg, latStr, lonStr, tz] = Just (msg, read latStr, read lonStr, tz)
readLines _ = Nothing
kill :: String -> String
kill = (++) "atrm "
after :: (Eq a) => a -> [a] -> [a]
after c = drop 1 . dropWhile (/= c)
formatTime :: ZonedTime -> String
formatTime = take 5 . after 'T' . formatTimeRFC3339
buildCmd :: String -> ZonedTime -> String
buildCmd script time = "echo \"" ++ script ++ "\" | at " ++ formatTime time
sunriseNext :: ZonedTime -> ZonedTime -> ZonedTime -> Bool
sunriseNext sunriseTime sunsetTime time =
let utcTimeNow = zonedTimeToUTC time
utcSunrise = zonedTimeToUTC sunriseTime
utcSunset = zonedTimeToUTC sunsetTime
in utcTimeNow < utcSunrise || utcTimeNow > utcSunset