module Network.Miku.Utils where
import Control.Lens ((#), (&))
import Control.Monad.State
import Data.Bifunctor (first)
import Data.ByteString.Char8 (ByteString)
import Data.Monoid ((<>))
import Prelude hiding (())
import qualified Data.ByteString.Char8 as B
import Network.Wai
import qualified Network.HTTP.Types as H
import Data.String
import Data.CaseInsensitive ( CI )
import qualified Data.CaseInsensitive as CI
infixr 0
() :: (a -> b) -> a -> b
f x = f x
namespace :: ByteString -> Request -> [H.Header]
namespace x =
map (first . CI.map . B.drop B.length x)
. filter ((x `B.isPrefixOf`) . CI.original. fst)
. requestHeaders
putNamespace :: ByteString -> [H.Header] -> Request -> Request
putNamespace x xs env =
let adds = map (first (CI.map (x <>))) xs
newHeaders = map fst adds
newRequestHeaders =
(requestHeaders env & filter (flip notElem newHeaders . fst))
<> adds
in
env {requestHeaders = newRequestHeaders}
insertLast :: a -> [a] -> [a]
insertLast x xs = xs <> [x]