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Diffstat (limited to 'src/lib/haskell/Utils')
-rw-r--r-- | src/lib/haskell/Utils/HTTP.hs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/lib/haskell/Utils/HTTP.hs b/src/lib/haskell/Utils/HTTP.hs new file mode 100644 index 0000000..87635ce --- /dev/null +++ b/src/lib/haskell/Utils/HTTP.hs @@ -0,0 +1,22 @@ +module Utils.HTTP + ( get + ) where + +import Control.Exception (SomeException, try) +import Data.ByteString (ByteString) +import qualified Data.ByteString.Lazy as BS +import Data.Text (Text) +import qualified Data.Text as T +import Network.HTTP.Conduit + +import Model.URL + +get :: (ByteString -> Text) -> URL -> IO (Either Text Text) +get decode url = mapLeft (T.pack . show) <$> (try (unsafeGetPage decode url) :: IO (Either SomeException Text)) + +unsafeGetPage :: (ByteString -> Text) -> URL -> IO Text +unsafeGetPage decode url = (decode . BS.toStrict) <$> simpleHttp (T.unpack url) + +mapLeft :: (a -> c) -> Either a b -> Either c b +mapLeft f (Left l) = Left (f l) +mapLeft _ (Right r) = (Right r) |