module Game where

import Data.Char (isDigit)
import Control.Monad (when)
import System.Random (RandomGen)
import Player (Player, shed, draw)
import qualified Player as P
import Card (Card)
import qualified Card as C

data Direction = CCW | CW
data Game = Game { players :: [Player]
                 , playerIdx :: Int
                 , attack :: Integer
                 , direction :: Direction
                 , stockPile :: [Card]
                 , discardPile :: [Card]
                 }

prompt :: Game -> IO (Maybe Card)
prompt game@(Game plyrs pidx att _ _ _) = do
    let player = plyrs !! pidx
    let cards = P.cards player
    putStrLn $ P.name player ++ "'s turn (input 0 to skip turn and draw card)"
    putStrLn $ P.showCards player
    cardIdxStr <- getLine
    if any (== False) $ map isDigit cardIdxStr
        then do
            putStrLn "Please input card #"
            prompt game
        else do
            let cardIdx = read cardIdxStr - 1
            if cardIdx == -1
                then do
                   return Nothing
                else do
                    if cardIdx < 0 || cardIdx >= length cards
                        then do
                            putStrLn "This card does not exist, try again"
                            prompt game
                        else return $ Just (cards !! cardIdx)