{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE QuasiQuotes #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE FlexibleContexts #-}

module Handler.Home where

import Import
import Handler.Utils

-- import Data.Time
-- import qualified Data.Text as T
-- import Yesod.Form.Bootstrap3

import Web.PathPieces (showToPathPiece, readFromPathPiece)

-- import Colonnade
-- import Yesod.Colonnade

-- import qualified Data.UUID.Cryptographic as UUID

-- BEGIN - Buttons needed only here
data CreateButton = CreateMath | CreateInf  -- Dummy for Example
  deriving (Enum, Eq, Ord, Bounded, Read, Show)

instance PathPiece CreateButton where    -- for displaying the button only, not really for paths
  toPathPiece   = showToPathPiece
  fromPathPiece = readFromPathPiece

instance Button CreateButton where
  label CreateMath = [whamlet|Ma<i>thema</i>tik|]
  label CreateInf  = "Informatik"

  cssClass CreateMath = BCInfo
  cssClass CreateInf  = BCPrimary
-- END Button needed here

getHomeR :: Handler Html
getHomeR = do
  (btnWdgt, btnEnctype) <- generateFormPost (buttonForm :: Form CreateButton)
  defaultLayout $ do
    setTitle "Willkommen zum Uniworky Test!"
    $(widgetFile "home")


postHomeR :: Handler Html
postHomeR = do
  ((btnResult,_), _) <- runFormPost $ buttonForm
  case btnResult of
    (FormSuccess CreateInf)  -> setMessage "Informatik-Knopf gedrückt"
    (FormSuccess CreateMath) -> addMessage "warning" "Knopf Mathematik erkannt"
    _other -> return ()
  getHomeR