module GeneralStrategies where

import Data.Maybe
import Datatypes
import PowerPhrases
import VM

executePhrase :: String -> Game -> [(Game, Notes)]
executePhrase str game = foldl cmdprop [(game,OK)] commands
  where
    commands = mapMaybe charToCommand str
    cmdprop (x:xs) cmd = (fst (step (fst x) cmd), notesfilter (snd (step (fst x) cmd)) (snd x)):x:xs 
    
notesfilter :: Notes -> Notes -> Notes
notesfilter a b = if b == ErrorZero
                  then ErrorZero
                  else if a == Ended
                       then Ended
                       else OK