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{-# LANGUAGE OverloadedStrings #-}
module ACMS.API.REST where
#ifndef ghcjs_HOST_OS
import Network.HTTP.Simple
#else
import Data.ByteString.Lazy.UTF8 qualified as LB
import Data.Maybe
import Data.String
import JavaScript.Web.XMLHttpRequest
import Miso.String qualified as J
#endif
import Control.Monad.Catch (MonadThrow)
import Data.Aeson qualified as A
import Data.ByteString.Lazy.Char8 qualified as LB
import Data.Function ((&))
import Data.String (IsString (fromString))
import Miso (JSM)
import Miso.String (MisoString)
restRequest :: String -> Request
restRequest endpoint =
fromString ("http://localhost:8081/api/rest" <> endpoint)
schemaVersion :: (APIMonad m, A.FromJSON a) => m a
schemaVersion =
restRequest "/schemaVersion"
& fetch
>>= A.throwDecode
listCollections :: (APIMonad m) => m [MisoString]
listCollections =
restRequest "/collection"
& fetch
>>= A.throwDecode
createCollection :: (APIMonad m) => MisoString -> m ()
createCollection collection =
restRequest "/collections"
& setRequestMethod "POST"
& setRequestBodyLBS (A.encode (A.toJSON collection))
& fetch
>>= A.throwDecode
class (MonadThrow m) => APIMonad m where
fetch :: Request -> m LB.ByteString
instance APIMonad JSM where
fetch req = LB.fromStrict . getResponseBody <$> httpBS req
#ifdef ghcjs_HOST_OS
httpBS :: Request -> JSM (Response B.ByteString)
httpBS req = xhrByteString req
instance IsString Request where
fromString uri =
Request
{ reqMethod = GET,
reqURI = J.pack uri,
reqLogin = Nothing,
reqHeaders = [],
reqWithCredentials = False,
reqData = NoData
}
setRequestMethod :: B.ByteString -> Request -> Request
setRequestMethod "POST" req = req {reqMethod = POST}
setRequestBodyLBS :: LB.ByteString -> Request -> Request
setRequestBodyLBS body req = req {reqData = StringData (J.pack (LB.toString body))}
getResponseBody :: Response B.ByteString -> B.ByteString
getResponseBody = fromMaybe "" . contents
#else
instance APIMonad IO where
fetch req = LB.fromStrict . getResponseBody <$> httpBS req
#endif
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