content: {-# LANGUAGE NoImplicitPrelude #-}
  {-# LANGUAGE OverloadedStrings #-}
  {-# LANGUAGE TemplateHaskell #-}
  {-# LANGUAGE MultiParamTypeClasses #-}
  {-# LANGUAGE TypeFamilies #-}
  {-# LANGUAGE ViewPatterns #-}
  {-# LANGUAGE RecordWildCards #-}
  {-# OPTIONS_GHC -fno-warn-orphans #-}
  module Application
      ( getApplicationDev
      , appMain
      , develMain
      , makeFoundation
      , makeLogWare
      -- * for DevelMain
      , getApplicationRepl
      , shutdownApp
      -- * for GHCI
      , handler
      ) where
  
  import Control.Monad.Logger                 (liftLoc)
  import Import
  import Language.Haskell.TH.Syntax           (qLocation)
  import Network.HTTP.Client.TLS              (getGlobalManager)
  import Network.Wai (Middleware)
  import Network.Wai.Handler.Warp             (Settings, defaultSettings,
                                               defaultShouldDisplayException,
                                               runSettings, setHost,
                                               setOnException, setPort, getPort)
  import Network.Wai.Middleware.RequestLogger (Destination (Logger),
                                               IPAddrSource (..),
                                               OutputFormat (..), destination,
                                               mkRequestLogger, outputFormat)
  import System.Log.FastLogger                (defaultBufSize, newStdoutLoggerSet,
                                               toLogStr)
  
  -- Import all relevant handler modules here.
  -- Don't forget to add new modules to your cabal file!
  import Handler.Common
  import Handler.Home
  import Handler.Comment
  
  -- This line actually creates our YesodDispatch instance. It is the second half
  -- of the call to mkYesodData which occurs in Foundation.hs. Please see the
  -- comments there for more details.
  mkYesodDispatch "App" resourcesApp
  
  -- | This function allocates resources (such as a database connection pool),
  -- performs initialization and returns a foundation datatype value. This is also
  -- the place to put your migrate statements to have automatic database
  -- migrations handled by Yesod.
  makeFoundation :: AppSettings -> IO App
  makeFoundation appSettings = do
      -- Some basic initializations: HTTP connection manager, logger, and static
      -- subsite.
      appHttpManager <- getGlobalManager
      appLogger <- newStdoutLoggerSet defaultBufSize >>= makeYesodLogger
      appStatic <-
          (if appMutableStatic appSettings then staticDevel else static)
          (appStaticDir appSettings)
  
      -- Return the foundation
      return App {..}
  
  -- | Convert our foundation to a WAI Application by calling @toWaiAppPlain@ and
  -- applying some additional middlewares.
  makeApplication :: App -> IO Application
  makeApplication foundation = do
      logWare <- makeLogWare foundation
      -- Create the WAI application and apply middlewares
      appPlain <- toWaiAppPlain foundation
      return $ logWare $ defaultMiddlewaresNoLogging appPlain
  
  makeLogWare :: App -> IO Middleware
  makeLogWare foundation =
      mkRequestLogger def
          { outputFormat =
              if appDetailedRequestLogging $ appSettings foundation
                  then Detailed True
                  else Apache
                          (if appIpFromHeader $ appSettings foundation
                              then FromFallback
                              else FromSocket)
          , destination = Logger $ loggerSet $ appLogger foundation
          }
  
  
  -- | Warp settings for the given foundation value.
  warpSettings :: App -> Settings
  warpSettings foundation =
        setPort (appPort $ appSettings foundation)
      $ setHost (appHost $ appSettings foundation)
      $ setOnException (\_req e ->
          when (defaultShouldDisplayException e) $ messageLoggerSource
              foundation
              (appLogger foundation)
              $(qLocation >>= liftLoc)
              "yesod"
              LevelError
              (toLogStr $ "Exception from Warp: " ++ show e))
        defaultSettings
  
  -- | For yesod devel, return the Warp settings and WAI Application.
  getApplicationDev :: IO (Settings, Application)
  getApplicationDev = do
      settings <- getAppSettings
      foundation <- makeFoundation settings
      wsettings <- getDevSettings $ warpSettings foundation
      app <- makeApplication foundation
      return (wsettings, app)
  
  getAppSettings :: IO AppSettings
  getAppSettings = loadYamlSettings [configSettingsYml] [] useEnv
  
  -- | main function for use by yesod devel
  develMain :: IO ()
  develMain = develMainHelper getApplicationDev
  
  -- | The @main@ function for an executable running this site.
  appMain :: IO ()
  appMain = do
      -- Get the settings from all relevant sources
      settings <- loadYamlSettingsArgs
          -- fall back to compile-time values, set to [] to require values at runtime
          [configSettingsYmlValue]
  
          -- allow environment variables to override
          useEnv
  
      -- Generate the foundation from the settings
      foundation <- makeFoundation settings
  
      -- Generate a WAI Application from the foundation
      app <- makeApplication foundation
  
      -- Run the application with Warp
      runSettings (warpSettings foundation) app
  
  
  --------------------------------------------------------------
  -- Functions for DevelMain.hs (a way to run the app from GHCi)
  --------------------------------------------------------------
  getApplicationRepl :: IO (Int, App, Application)
  getApplicationRepl = do
      settings <- getAppSettings
      foundation <- makeFoundation settings
      wsettings <- getDevSettings $ warpSettings foundation
      app1 <- makeApplication foundation
      return (getPort wsettings, foundation, app1)
  
  shutdownApp :: App -> IO ()
  shutdownApp _ = return ()
  
  
  ---------------------------------------------
  -- Functions for use in development with GHCi
  ---------------------------------------------
  
  -- | Run a handler
  handler :: Handler a -> IO a
  handler h = getAppSettings >>= makeFoundation >>= flip unsafeHandler h
  