{-# LANGUAGE OverloadedStrings #-}
module Main where

import Data.List
import Text.Printf
import Network.Wai
import Network.HTTP.Types
import Network.Wai.Handler.Warp (run)

app :: Application
app request respond = respond $
  case rawPathInfo request of
    "/"      -> index
    _        -> errorResponse

index :: Response
index =
  responseLBS status200
  [("Content-Type", "text/plain")]
  "Hello, world!"

errorResponse :: Response
errorResponse =
  responseFile status200
  [("Content-Type", "text/plain")]
  "pages/error.html"
  Nothing

main :: IO ()
main = do
  putStrLn $ "http://localhost:8080/"
  run 8080 app