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-rw-r--r--src/lib/haskell/Utils/HTTP.hs22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/lib/haskell/Utils/HTTP.hs b/src/lib/haskell/Utils/HTTP.hs
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+++ b/src/lib/haskell/Utils/HTTP.hs
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+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)