{-# LANGUAGE LambdaCase #-}

module Main where

import Data.List (uncons)
import Data.Maybe (mapMaybe)
import Lib
import System.Environment (getArgs)

paths :: [FilePath]
paths =
  [ "./data/01.in",
    "./data/02.in",
    "./data/03.in",
    "./data/04.in",
    "./data/05.in",
    "./data/06.in",
    "./data/07.in",
    "./data/08.in",
    "./data/09.in",
    "./data/10.in",
    "./data/11.in",
    "./data/12.in",
    "./data/13.in",
    "./data/14.in",
    "./data/15.in",
    "./data/16.in",
    "./data/17.in",
    "./data/18.in",
    "./data/19.in",
    "./data/20.in",
    "./data/21.in",
    "",
    "./data/23.in",
    "./data/24.in",
    "./data/25.in"
  ]

solutions :: [(Int, Day, FilePath)]
solutions =
  let maybeSolutions = zip3 [1 ..] days paths
      available (num, daySolutions, filepath) = do
        (firstSolution, _) <- uncons daySolutions
        return (num, firstSolution, filepath)
   in mapMaybe available maybeSolutions

runAll :: [(Int, Day, FilePath)] -> IO ()
runAll = mapM_ (\(dayNum, day, path) -> run day path >>= printDR dayNum)

usage :: IO ()
usage = putStrLn "./Main"

main :: IO ()
main =
  printHeader
    >> getArgs
    >>= ( \case
            ["all"] -> runAll solutions
            ("day" : dayNumStrs) ->
              let dayNums = map read dayNumStrs
               in runAll (filter (\(a, _, _) -> a `elem` dayNums) solutions)
            _ -> runAll [last solutions]
        )
    >> printFooter