{-# LANGUAGE
    OverloadedStrings
  , UnicodeSyntax
  #-}
import qualified Data.ByteString.Lazy.Char8 as Lazy
import Control.Applicative
import Control.Monad.Unicode
import Data.Maybe
import Data.Monoid.Unicode
import Network.HTTP.Lucu

main ∷ IO ()
main = let config    = defaultConfig { cnfServerPort = "9999" }
           resources = mkResTree [ ([], resMain) ]
       in
         do putStrLn "Access http://localhost:9999/ with your browser."
            runHttpd config resources []


resMain ∷ ResourceDef
resMain 
    = emptyResource {
        resGet
          = Just $ do setContentType $ parseMIMEType "text/html"
                      putChunks $ "<title>Multipart Form Test</title>\n"
                                ⊕ "<form action=\"/\" method=\"post\" enctype=\"multipart/form-data\">\n"
                                ⊕ "  Upload some file:\n"
                                ⊕ "  <input type=\"text\" name=\"text\">\n"
                                ⊕ "  <input type=\"file\" name=\"file\">\n"
                                ⊕ "  <input type=\"submit\" value=\"Submit\">\n"
                                ⊕ "</form>\n"
      , resPost
          = Just $ do form ← getForm Nothing
                      let text     = fromMaybe (∅) $ fdContent <$> lookup "text" form
                          file     = fromMaybe (∅) $ fdContent <$> lookup "file" form
                          fileName = fdFileName =≪ lookup "file" form
                      setContentType $ parseMIMEType "text/plain"
                      putChunks $ "You entered \"" ⊕ text ⊕ "\".\n"
                      putChunks $ "You uploaded a " ⊕ Lazy.pack (show $ Lazy.length file) ⊕ " bytes long file.\n"
                      putChunks $ "The file name is " ⊕ Lazy.pack (show fileName) ⊕ ".\n"
      }