{-# LANGUAGE OverloadedStrings   #-}
{-# LANGUAGE ScopedTypeVariables #-}

module Nomyx.Web.Login where

import           Control.Applicative
import           Control.Lens
import           Control.Monad.State
import           Data.Maybe
import           Data.Text                   hiding (concatMap, map, zip)
import           Happstack.Authenticate.Core (AuthenticateURL (..), _email,
                                              _unEmail, _unUsername, _username)
import           Happstack.Server
import           Nomyx.Core.Session          as S
import           Nomyx.Core.Types            as T
import           Nomyx.Web.Common
import           Nomyx.Web.Types
import qualified Nomyx.Auth                  as Auth
import           Prelude                     hiding (div)
import           Text.Blaze.Html5            hiding (br, label, map)
import qualified Text.Blaze.Html5            as H
import           Text.Blaze.Html5.Attributes hiding (dir, label)
import           Text.Blaze.Internal
import           Web.Routes.Happstack        ()
import           Web.Routes.RouteT
import           Safe

default (Integer, Double, Data.Text.Text)

-- | function which generates the login page
loginPage :: RoutedNomyxServer Response
loginPage = do 
   let ctrl = customAttribute "ng-controller" "UsernamePasswordCtrl" 
   let isAuthenticated b = customAttribute "up-authenticated" (if b then "true" else "false")
   let login = customParent (stringTag "up-login-inline") ""
   let signup = customParent (stringTag "up-signup-password") ""
   let logout t = customParent (stringTag "up-logout") t
   let resetPassword = customParent (stringTag "up-request-reset-password") ""
   mainPage' "Nomyx" "Login page" True $ do
     H.div ! ctrl $ do
       H.div ! isAuthenticated False $ do
         h2 "Login"
         login
         H.br
         p "Forgot your password? Request a reset link via email!"
         resetPassword
         H.br
         h2 "Create A New Account"
         signup
       H.div ! isAuthenticated True $ do
         p "You have successfully logged in!"
         H.a "Click here to access the game" ! (href $ toValue $ showRelURL PostAuth)
         H.br
         H.br
         logout "Click to logout."
         H.br
         H.a "Advanced settings" ! (href $ toValue $ defLink Advanced True)

logout :: RoutedNomyxServer Response
logout = do
  ok $ do
    H.div ! customAttribute "ng-controller" "UsernamePasswordCtrl" $ do
      customLeaf (stringTag "up-logout") True
  seeOther (showRelURL MainPage) $ toResponse ("to game page" :: String)

-- | add a new player if not existing
postAuthenticate :: RoutedNomyxServer Response
postAuthenticate = do
   pn <- fromJustNote "postAuthenticate" <$> getPlayerNumber
   pf <- getProfile' pn
   case pf of
      Just _ -> seeOther (showRelURL MainPage) $ toResponse ("to main page" :: String)
      Nothing -> do -- Player doesn't exist, creating it
         user <- fromJust <$> getUser
         webCommand $ S.newPlayer pn (PlayerSettings (unpack $ _unUsername $ _username user) ((unpack . _unEmail) <$> _email user) False True False False)
         seeOther (showRelURL MainPage) $ toResponse ("to settings page" :: String)

authenticate :: AuthenticateURL -> RoutedNomyxServer Response
authenticate authURL = do
  rt <- use (authState . Auth.routeAuthenticate)
  mapRouteT lift $ nestURL Auth $ rt authURL

changePasswordPanel :: RoutedNomyxServer Response
changePasswordPanel = mainPage' "Nomyx" "Login page" True $
   customLeaf (stringTag "up-change-password") True

openIdRealmPanel :: RoutedNomyxServer Response
openIdRealmPanel = mainPage' "Nomyx" "Login page" True $
   H.div ! customAttribute "ng-controller" "OpenIdCtrl" $
     customLeaf (stringTag "openid-realm") True

resetPasswordPage :: RoutedNomyxServer Response
resetPasswordPage = mainPage' "Nomyx" "Login page" True $ do
   h2 "Reset Password"
   customLeaf (stringTag "up-reset-password") True