52 lines
2.1 KiB
Haskell
52 lines
2.1 KiB
Haskell
module Utils.SystemMessage where
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import Import.NoFoundation
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import qualified Data.List.NonEmpty as NonEmpty
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import Data.List (findIndex)
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getSystemMessage :: MonadHandler m
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=> NonEmpty Lang -- ^ `appLanguages`
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-> SystemMessageId
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-> ReaderT SqlBackend m (Maybe (SystemMessage, Maybe SystemMessageTranslation))
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getSystemMessage appLanguages smId = runMaybeT $ do
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SystemMessage{..} <- MaybeT $ get smId
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translations <- lift $ selectList [SystemMessageTranslationMessage ==. smId] []
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let
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avL = NonEmpty.sortWith (\l -> NTop $ findIndex (langMatches l) $ NonEmpty.toList appLanguages) $ systemMessageDefaultLanguage :| map (systemMessageTranslationLanguage . entityVal) translations
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lang <- selectLanguage avL
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return (SystemMessage{..}, find (langMatches lang . systemMessageTranslationLanguage) $ map entityVal translations)
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systemMessageToTranslation :: SystemMessageId
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-> (SystemMessage, Maybe SystemMessageTranslation)
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-> SystemMessageTranslation
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systemMessageToTranslation systemMessageTranslationMessage (SystemMessage{..}, Nothing)
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= SystemMessageTranslation
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{ systemMessageTranslationMessage
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, systemMessageTranslationLanguage = systemMessageDefaultLanguage
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, systemMessageTranslationContent = systemMessageContent
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, systemMessageTranslationSummary = systemMessageSummary
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}
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systemMessageToTranslation _ (_, Just t) = t
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data UserSystemMessageState = UserSystemMessageState
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{ userSystemMessageShown
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, userSystemMessageHidden :: Maybe UTCTime
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} deriving (Eq, Ord, Read, Show, Generic, Typeable)
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deriveJSON defaultOptions
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{ fieldLabelModifier = camelToPathPiece' 3
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, omitNothingFields = True
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} ''UserSystemMessageState
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instance Semigroup UserSystemMessageState where
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a <> b = UserSystemMessageState
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{ userSystemMessageShown = (max `on` userSystemMessageShown ) a b
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, userSystemMessageHidden = (max `on` userSystemMessageHidden) a b
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}
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instance Monoid UserSystemMessageState where
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mempty = UserSystemMessageState Nothing Nothing
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