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module Issue.Tag (Tag (..), extractTags, internalTags) where
import Data.Binary (Binary)
import Data.Maybe (catMaybes)
import Data.Text (Text)
import Data.Text qualified as T
import GHC.Generics (Generic)
data Tag = Tag Text Text deriving (Show, Generic, Binary)
extractTags :: Text -> [Tag]
extractTags =
catMaybes
. map
( ( \case
((T.uncons -> Just ('@', k)) : v) ->
Just (Tag k (T.unwords v))
_ -> Nothing
)
. T.words
)
. T.lines
internalTags :: Text -> [Tag]
internalTags title =
[ Tag "id" (toSpinalCase title)
]
toSpinalCase :: Text -> Text
toSpinalCase = T.replace " " "-" . T.filter keep . T.toLower
where
keep = (`elem` (concat [[' ', '-'], ['a' .. 'z'], ['0' .. '9']]))
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