{-# LANGUAGE OverloadedStrings #-}
module Discord.Internal.Rest
( module Discord.Internal.Types
, DiscordHandleRestChan
, Request(..)
, writeRestCall
, startRestThread
, RestCallInternalException(..)
) where
import Prelude hiding (log)
import Data.Aeson (FromJSON, eitherDecode)
import Control.Concurrent.Chan
import Control.Concurrent.MVar
import Control.Concurrent (forkIO, ThreadId)
import qualified Data.ByteString.Lazy as BL
import qualified Data.Text as T
import Discord.Internal.Types
import Discord.Internal.Rest.HTTP
type DiscordHandleRestChan = Chan (String, JsonRequest, MVar (Either RestCallInternalException BL.ByteString))
startRestThread :: Auth -> Chan T.Text -> IO (DiscordHandleRestChan, ThreadId)
startRestThread auth log = do
c <- newChan
tid <- forkIO $ restLoop auth c log
pure (c, tid)
writeRestCall :: (Request (r a), FromJSON a) => DiscordHandleRestChan -> r a -> IO (Either RestCallInternalException a)
writeRestCall c req = do
m <- newEmptyMVar
writeChan c (majorRoute req, jsonRequest req, m)
r <- readMVar m
pure $ case eitherDecode <$> r of
Right (Right o) -> Right o
Right (Left er) -> Left (RestCallInternalNoParse er (case r of Right x -> x
Left _ -> ""))
Left e -> Left e