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module Main where
import MiniTimeWindows.Window
( formatInstant
, parseInstant
, renderStatus
, sampleWindows
, statusAt
)
import System.Environment (getArgs)
import System.Exit (die)
main :: IO ()
main = do
args <- getArgs
rawInstant <-
case args of
[] -> pure "2026-05-05T10:30:00Z"
[singleInstant] -> pure singleInstant
_ -> die "expected either no arguments or: <utc-timestamp>"
currentInstant <- either die pure (parseInstant rawInstant)
putStrLn ("at " ++ formatInstant currentInstant ++ ": " ++ renderStatus (statusAt currentInstant sampleWindows))