make connstring configurable at runtime

1 files changed, 7 insertions, 1 deletions

diff --git a/app/Main.hs b/app/Main.hs
index e47ffc4..ec4b5e7 100644
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE LambdaCase #-}
+
 -- | The main module. Does little more than handle some basic ocnfic, then
 -- call the server
 module Main where
@@ -11,14 +13,18 @@ import           Network.Wai.Handler.Warp             (run)
 import           Network.Wai.Middleware.RequestLogger (OutputFormat (..),
                                                        RequestLoggerSettings (..),
                                                        mkRequestLogger)
+import System.Environment (getArgs)
+import Data.Functor ((<&>))
+import Data.ByteString.Internal (packChars)
 
 import           GTFS
 import           Server
 
-connStr = "user=travelynx"
 
 main :: IO ()
 main = do
+  connStr <- getArgs <&> \case {[str] -> packChars str; _ -> ""}
+
   gtfs <- loadGtfs "./gtfs.zip"
   loggerMiddleware <- mkRequestLogger
     $ def { outputFormat = Detailed True }