55 lines
1.2 KiB
Haskell
55 lines
1.2 KiB
Haskell
{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE TypeFamilies #-}
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module Data.Buuka
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( BuukaQ(..)
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, BuukaU(..)
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, BuukaEntry(..)
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, URL(..)
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, insert
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)
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where
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import Data.Map
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(Map)
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import qualified Data.Map.Strict as M
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import Database.Migrations
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import Data.Aeson
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import GHC.Generics
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(Generic)
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import Control.Monad.Reader
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import Control.Monad.State
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newtype URL = URL String
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deriving stock (Show, Eq, Generic, Ord)
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deriving newtype (ToJSON, FromJSON, FromJSONKey, ToJSONKey)
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data BuukaEntry
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= BuukaEntry { url :: URL
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, title :: Maybe String
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}
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deriving stock (Show, Eq, Generic)
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deriving anyclass (ToJSON, FromJSON)
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instance SafeJSON BuukaEntry where
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type Version BuukaEntry = 0
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newtype Buuka = Buuka ( Map URL BuukaEntry )
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deriving newtype (Semigroup, Monoid, FromJSON, ToJSON)
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insert :: BuukaEntry -> Buuka -> Buuka
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insert e (Buuka b) = Buuka (M.insert (url e) e b)
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instance SafeJSON Buuka where
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type Version Buuka = 0
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newtype BuukaQ a = BuukaQ { runBuukaQ :: Reader Buuka a }
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deriving newtype (Functor, Applicative, Monad, MonadReader Buuka)
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-- Last write wins
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newtype BuukaU a = BuukaU { runBuukaU :: State Buuka a }
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deriving newtype (Functor, Applicative, Monad, MonadState Buuka)
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