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{-# LANGUAGE ViewPatterns, FlexibleContexts, MultiParamTypeClasses, FunctionalDependencies, FlexibleInstances, UndecidableInstances, OverloadedStrings #-}
module Sequence.Utils
( withArg, withFocus, withFocus'
, toName
, Argument(..)
, Completion(..)
, module Sequence.Utils.Ask
) where
import Sequence.Types
import Control.Monad.State.Strict
import Control.Applicative
import Control.Monad
import Control.Lens
import Data.Bimap (Bimap)
import qualified Data.Bimap as Bimap
import Data.CaseInsensitive (CI)
import qualified Data.CaseInsensitive as CI
import Data.Map.Strict (Map)
import qualified Data.Map.Strict as Map
import Data.Function
import Data.Default
import Data.Maybe
import Text.Read (readMaybe)
import Data.List
import Data.Bool
import System.Console.Shell
import System.Console.Shell.ShellMonad
import System.Console.Shell.Backend.Haskeline
import Sequence.Utils.Ask
class Argument a st | a -> st where
arg :: String -> Sh st (Maybe a)
withArg :: Argument a st => (a -> Sh st ()) -> (Completable a -> Sh st ())
withArg f (Completable str) = arg str >>= \a -> case a of
Nothing -> shellPutErrLn $ "Could not parse ‘" ++ str ++ "’"
Just a -> f a
withFocus :: (EntityIdentifier -> Sh GameState ()) -> Sh GameState ()
withFocus f = use gFocus >>= maybe (shellPutErrLn $ "Currently not focusing any entity") f
withFocus' :: (Entity -> Sh GameState a) -> Sh GameState (Maybe a)
withFocus' f = preuse gFocus' >>= maybe (Nothing <$ shellPutErrLn "Currently not focusing any entity") (fmap Just . f)
unaligned = view faction' def
toName :: MonadState GameState m => EntityIdentifier -> m String
toName ident = do
let number = review entityId' ident
isShadowed <- uses gEntityNames . Bimap.memberR $ view entityName number
let number' = bool id ('#':) isShadowed $ number
fromMaybe number' . fmap (review entityName) . Bimap.lookup ident <$> use gEntityNames
instance Completion EntityIdentifier GameState where
completableLabel _ = "<entity>"
complete _ st prefix = return . filter ((isPrefixOf `on` CI.foldCase) prefix) . map ((evalState ?? st) . toName) . Map.keys $ st ^. gEntities
instance Argument EntityIdentifier GameState where
arg = \str -> do
fromForcedIdR <- fromForcedId str
fromNameR <- fromName str
fromIdR <- fromId str
return $ fromForcedIdR <|> fromNameR <|> fromIdR
where
fromName (EntityName . CI.mk -> name) = Bimap.lookupR name <$> use gEntityNames
fromId (preview entityId' -> Just n) = (n <$) . guard . Map.member n <$> use gEntities
fromId _ = return Nothing
fromForcedId ('#':str) = fromId str
fromForcedId _ = return Nothing
instance Completion Faction GameState where
completableLabel _ = "<faction>"
complete _ st prefix = return . filter ((isPrefixOf `on` CI.foldCase) prefix) . nub . sort $ unaligned : map (view faction') (st ^. inhabitedFactions)
instance Argument Faction GameState where
arg = return . Just . flip (set faction') def
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