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{-# LANGUAGE DerivingVia #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE StandaloneDeriving #-}
module Zettel.Types
( Combine (..),
UseCombine (..),
ZettelId (..),
ZettelCat (..),
ZettelTag (..),
ZettelMetadata (..),
Zettel (..),
ZettelGraph (..),
)
where
import Text.Pandoc.Builder (ToMetaValue (..))
import Text.Pandoc.Definition (Inline (..), Pandoc (..))
class Combine a where
cappend :: a -> a -> a
cempty :: a
newtype UseCombine a = UC a
instance (Monoid a) => Combine (UseCombine a) where
cappend (UC a) (UC b) = UC $ a <> b
cempty = UC mempty
deriving via (UseCombine Text) instance Combine Text
deriving via (UseCombine Pandoc) instance Combine Pandoc
deriving via (UseCombine [a]) instance Combine [a]
instance Combine (Maybe a) where
cappend Nothing a = a
cappend a _ = a
cempty = Nothing
-- | The ZettelId is just Text, however, it should also be possible to convert
-- it to a list of the ID split up into it's parts.
newtype ZettelId = ZettelId {unZettelId :: Text}
deriving (Show, Eq, Ord, IsString, ToString, Semigroup, Monoid, ToMetaValue)
deriving (Combine) via (UseCombine ZettelId)
newtype ZettelTag = ZettelTag {unZettelTag :: Text}
deriving (Show, Eq, Ord, IsString, ToString, Semigroup, Monoid, ToMetaValue)
deriving (Combine) via (UseCombine ZettelId)
newtype ZettelCat = ZettelCat {unZettelCat :: Text}
deriving (Show, Eq, Ord, IsString, ToString, Semigroup, Monoid, ToMetaValue)
deriving (Combine) via (UseCombine ZettelId)
data ZettelMetadata = ZettelMetadata
{ -- | Optional creation date of the Zettel.
zettelCreationDate :: Maybe Text,
-- | Optional last modified date of the Zettel.
zettelModifiedDate :: Maybe Text,
-- | Optional tags.
zettelTags :: [ZettelTag],
-- | Optional Category
zettelCats :: [ZettelCat],
-- | Author
zettelAuthor :: Maybe Text
}
deriving (Show, Eq)
instance Combine ZettelMetadata where
cappend (ZettelMetadata c m t a b) (ZettelMetadata c' m' t' a' b') =
ZettelMetadata (cappend c c') (cappend m m') (cappend t t') (cappend a a') (cappend b b')
cempty = ZettelMetadata cempty cempty cempty cempty cempty
data Zettel = Zettel
{ -- | The title of the Zettel, which should also be present in the body,
-- however, this is useful to gather metadata about the Zettel.
zettelTitle :: ![Inline],
-- | Zettel metadata which is mostly optional.
zettelMetadata :: ZettelMetadata,
-- | The text body of the Zettel, which is stored as a Pandoc document to
-- make it easy to export to other documents.
zettelBody :: Pandoc,
zettelNext :: [ZettelId],
zettelPrev :: [ZettelId]
}
deriving (Show, Eq)
instance Combine Zettel where
cappend (Zettel b c d e f) (Zettel b' c' d' e' f') =
Zettel (cappend b b') (cappend c c') (cappend d d') (cappend e e') (cappend f f')
cempty = Zettel cempty cempty cempty cempty cempty
newtype ZettelGraph = ZettelGraph {unZettelGraph :: Map ZettelId Zettel}
deriving (Show, Eq)
|
