{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE BangPatterns #-}

module ServerSpec (spec) where

import Control.Concurrent
import qualified Control.Exception as E
import Data.ByteString.Builder (byteString)
import Network.HTTP.Types
import Network.Run.TCP
import System.Exit
import System.Process.Typed
import Test.Hspec

import Network.HTTP2.Server

port :: String
port = "8080"

host :: String
host = "127.0.0.1"

spec :: Spec
spec = do
    describe "server" $ do
        it "handles error cases" $
            E.bracket (forkIO runServer) killThread $ \_ -> do
                runProcess (proc "h2spec" ["-h",host,"-p",port]) `shouldReturn` ExitSuccess

runServer :: IO ()
runServer = runTCPServer (Just host) port runHTTP2Server
  where
    runHTTP2Server s = E.bracket (allocSimpleConfig s 4096)
                                 freeSimpleConfig
                                 (`run` server)

server :: Server
server req _aux sendResponse = case requestMethod req of
  Just "GET"  -> case requestPath req of
                   Just "/"     -> sendResponse responseHello []
                   _            -> sendResponse response404 []
  _           -> sendResponse response405 []

responseHello :: Response
responseHello = responseBuilder ok200 header body
  where
    header = [("Content-Type", "text/plain")]
    body = byteString "Hello, world!\n"

response404 :: Response
response404 = responseNoBody notFound404 []

response405 :: Response
response405 = responseNoBody methodNotAllowed405 []