content: module Foundation
      ( App (..)
      , Route (..)
      , AppMessage (..)
      , resourcesApp
      , Handler
      , Widget
      , Form
      , maybeAuth
      , requireAuth
      , module Settings
      , module Model
      ) where
  
  import Prelude
  import Yesod
  import Yesod.Static
  import Yesod.Auth
  import Yesod.Auth.BrowserId
  import Yesod.Auth.GoogleEmail
  import Yesod.Default.Config
  import Yesod.Default.Util (addStaticContentExternal)
  import Yesod.Logger (Logger, logMsg, formatLogText)
  import Network.HTTP.Conduit (Manager)
  import qualified Settings
  import qualified Database.Persist.Store
  import Settings.StaticFiles
  import Database.Persist.GenericSql
  import Settings (widgetFile, Extra (..))
  import Model
  import Text.Jasmine (minifym)
  import Web.ClientSession (getKey)
  import Text.Hamlet (hamletFile)
  
  -- | The site argument for your application. This can be a good place to
  -- keep settings and values requiring initialization before your application
  -- starts running, such as database connections. Every handler will have
  -- access to the data present here.
  data App = App
      { settings :: AppConfig DefaultEnv Extra
      , getLogger :: Logger
      , getStatic :: Static -- ^ Settings for static file serving.
      , connPool :: Database.Persist.Store.PersistConfigPool Settings.PersistConfig -- ^ Database connection pool.
      , httpManager :: Manager
      , persistConfig :: Settings.PersistConfig
      }
  
  -- Set up i18n messages. See the message folder.
  mkMessage "App" "messages" "en"
  
  -- This is where we define all of the routes in our application. For a full
  -- explanation of the syntax, please see:
  -- http://www.yesodweb.com/book/handler
  --
  -- This function does three things:
  --
  -- * Creates the route datatype AppRoute. Every valid URL in your
  --   application can be represented as a value of this type.
  -- * Creates the associated type:
  --       type instance Route App = AppRoute
  -- * Creates the value resourcesApp which contains information on the
  --   resources declared below. This is used in Handler.hs by the call to
  --   mkYesodDispatch
  --
  -- What this function does *not* do is create a YesodSite instance for
  -- App. Creating that instance requires all of the handler functions
  -- for our application to be in scope. However, the handler functions
  -- usually require access to the AppRoute datatype. Therefore, we
  -- split these actions into two functions and place them in separate files.
  mkYesodData "App" $(parseRoutesFile "config/routes")
  
  type Form x = Html -> MForm App App (FormResult x, Widget)
  
  -- Please see the documentation for the Yesod typeclass. There are a number
  -- of settings which can be configured by overriding methods here.
  instance Yesod App where
      approot = ApprootMaster $ appRoot . settings
  
      -- Store session data on the client in encrypted cookies,
      -- default session idle timeout is 120 minutes
      makeSessionBackend _ = do
          key <- getKey "config/client_session_key.aes"
          return . Just $ clientSessionBackend key 120
  
      defaultLayout widget = do
          master <- getYesod
          mmsg <- getMessage
  
          -- We break up the default layout into two components:
          -- default-layout is the contents of the body tag, and
          -- default-layout-wrapper is the entire page. Since the final
          -- value passed to hamletToRepHtml cannot be a widget, this allows
          -- you to use normal widget features in default-layout.
  
          pc <- widgetToPageContent $ do
              $(widgetFile "normalize")
              addStylesheet $ StaticR css_bootstrap_css
              $(widgetFile "default-layout")
          hamletToRepHtml $(hamletFile "templates/default-layout-wrapper.hamlet")
  
      -- This is done to provide an optimization for serving static files from
      -- a separate domain. Please see the staticRoot setting in Settings.hs
      urlRenderOverride y (StaticR s) =
          Just $ uncurry (joinPath y (Settings.staticRoot $ settings y)) $ renderRoute s
      urlRenderOverride _ _ = Nothing
  
      -- The page to be redirected to when authentication is required.
      authRoute _ = Just $ AuthR LoginR
  
      messageLogger y loc level msg =
        formatLogText (getLogger y) loc level msg >>= logMsg (getLogger y)
  
      -- This function creates static content files in the static folder
      -- and names them based on a hash of their content. This allows
      -- expiration dates to be set far in the future without worry of
      -- users receiving stale content.
      addStaticContent = addStaticContentExternal minifym base64md5 Settings.staticDir (StaticR . flip StaticRoute [])
  
      -- Place Javascript at bottom of the body tag so the rest of the page loads first
      jsLoader _ = BottomOfBody
  
  -- How to run database actions.
  instance YesodPersist App where
      type YesodPersistBackend App = SqlPersist
      runDB f = do
          master <- getYesod
          Database.Persist.Store.runPool
              (persistConfig master)
              f
              (connPool master)
  
  instance YesodAuth App where
      type AuthId App = UserId
  
      -- Where to send a user after successful login
      loginDest _ = HomeR
      -- Where to send a user after logout
      logoutDest _ = HomeR
  
      getAuthId creds = runDB $ do
          x <- getBy $ UniqueUser $ credsIdent creds
          case x of
              Just (Entity uid _) -> return $ Just uid
              Nothing -> do
                  fmap Just $ insert $ User (credsIdent creds) Nothing
  
      -- You can add other plugins like BrowserID, email or OAuth here
      authPlugins _ = [authBrowserId, authGoogleEmail]
  
      authHttpManager = httpManager
  
  -- This instance is required to use forms. You can modify renderMessage to
  -- achieve customized and internationalized form validation messages.
  instance RenderMessage App FormMessage where
      renderMessage _ _ = defaultFormMessage
  
  -- Note: previous versions of the scaffolding included a deliver function to
  -- send emails. Unfortunately, there are too many different options for us to
  -- give a reasonable default. Instead, the information is available on the
  -- wiki:
  --
  -- https://github.com/yesodweb/yesod/wiki/Sending-email
  