{-# LANGUAGE FlexibleContexts #-}

module Saturn.Unstable.Type.Hour where

import qualified Data.Coerce as Coerce
import qualified Data.Set as Set
import qualified Data.Text.Lazy.Builder as Builder
import qualified Data.Word as Word
import qualified Saturn.Unstable.Type.Field as Field
import qualified Text.Parsec as Parsec

newtype Hour
  = Hour Field.Field
  deriving (Hour -> Hour -> Bool
(Hour -> Hour -> Bool) -> (Hour -> Hour -> Bool) -> Eq Hour
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
$c== :: Hour -> Hour -> Bool
== :: Hour -> Hour -> Bool
$c/= :: Hour -> Hour -> Bool
/= :: Hour -> Hour -> Bool
Eq, Int -> Hour -> ShowS
[Hour] -> ShowS
Hour -> String
(Int -> Hour -> ShowS)
-> (Hour -> String) -> ([Hour] -> ShowS) -> Show Hour
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
$cshowsPrec :: Int -> Hour -> ShowS
showsPrec :: Int -> Hour -> ShowS
$cshow :: Hour -> String
show :: Hour -> String
$cshowList :: [Hour] -> ShowS
showList :: [Hour] -> ShowS
Show)

bounds :: (Word.Word8, Word.Word8)
bounds :: (Word8, Word8)
bounds = (Word8
0, Word8
23)

fromField :: Field.Field -> Maybe Hour
fromField :: Field -> Maybe Hour
fromField Field
field =
  if (Word8, Word8) -> Field -> Bool
Field.isValid (Word8, Word8)
bounds Field
field then Hour -> Maybe Hour
forall a. a -> Maybe a
Just (Hour -> Maybe Hour) -> Hour -> Maybe Hour
forall a b. (a -> b) -> a -> b
$ Field -> Hour
Hour Field
field else Maybe Hour
forall a. Maybe a
Nothing

toField :: Hour -> Field.Field
toField :: Hour -> Field
toField = Hour -> Field
forall a b. Coercible a b => a -> b
Coerce.coerce

parsec :: (Parsec.Stream s m Char) => Parsec.ParsecT s u m Hour
parsec :: forall s (m :: * -> *) u. Stream s m Char => ParsecT s u m Hour
parsec = do
  Field
field <- ParsecT s u m Field
forall s (m :: * -> *) u. Stream s m Char => ParsecT s u m Field
Field.parsec
  ParsecT s u m Hour
-> (Hour -> ParsecT s u m Hour) -> Maybe Hour -> ParsecT s u m Hour
forall b a. b -> (a -> b) -> Maybe a -> b
maybe (String -> ParsecT s u m Hour
forall a. String -> ParsecT s u m a
forall (m :: * -> *) a. MonadFail m => String -> m a
fail String
"invalid Hour") Hour -> ParsecT s u m Hour
forall a. a -> ParsecT s u m a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (Maybe Hour -> ParsecT s u m Hour)
-> Maybe Hour -> ParsecT s u m Hour
forall a b. (a -> b) -> a -> b
$ Field -> Maybe Hour
fromField Field
field

toBuilder :: Hour -> Builder.Builder
toBuilder :: Hour -> Builder
toBuilder = Field -> Builder
Field.toBuilder (Field -> Builder) -> (Hour -> Field) -> Hour -> Builder
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Hour -> Field
toField

expand :: Hour -> Set.Set Word.Word8
expand :: Hour -> Set Word8
expand = (Word8, Word8) -> Field -> Set Word8
Field.expand (Word8, Word8)
bounds (Field -> Set Word8) -> (Hour -> Field) -> Hour -> Set Word8
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Hour -> Field
toField

isMatch :: Word.Word8 -> Hour -> Bool
isMatch :: Word8 -> Hour -> Bool
isMatch Word8
word8 = Word8 -> Set Word8 -> Bool
forall a. Ord a => a -> Set a -> Bool
Set.member Word8
word8 (Set Word8 -> Bool) -> (Hour -> Set Word8) -> Hour -> Bool
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Hour -> Set Word8
expand