Application.hs

{-# OPTIONS_GHC -fno-warn-orphans #-}
module Application
    ( makeApplication
    , getApplicationDev
    , makeFoundation
    ) where

import Import
import Settings
import Yesod.Auth
import Yesod.Default.Config
import Yesod.Default.Main
import Yesod.Default.Handlers
import Network.Wai.Middleware.RequestLogger
import qualified Database.Persist
import Database.Persist.Sql (runMigration)
import Network.HTTP.Conduit (newManager, def)
import Control.Monad.Logger (runLoggingT)
import System.IO (stdout)
import System.Log.FastLogger (mkLogger)

import Yesod.Comments.Storage (migrateComments)

-- Import all relevant handler modules here.
-- Don't forget to add new modules to your cabal file!
import Handler.Root
import Handler.Search
import Handler.Completion
import Handler.Profile
import Handler.Review
import Handler.Feed
import Helpers.Heroku

-- 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 creates a WAI application. This is also the
-- place to put your migrate statements to have automatic database
-- migrations handled by Yesod.
makeApplication :: AppConfig DefaultEnv () -> IO Application
makeApplication conf = do
    foundation <- makeFoundation conf

    -- Initialize the logging middleware
    logWare <- mkRequestLogger def
        { outputFormat =
            if development
                then Detailed True
                else Apache FromSocket
        , destination = Logger $ appLogger foundation
        }

    -- Create the WAI application and apply middlewares
    app <- toWaiAppPlain foundation
    return $ logWare app

-- | Loads up any necessary settings, creates your foundation datatype, and
-- performs some initialization.
makeFoundation :: AppConfig DefaultEnv () -> IO App
makeFoundation conf = do
    manager <- newManager def
    s <- staticSite
    dbconf <- if development
                then withYamlEnvironment "config/postgresql.yml" (appEnv conf)
                    Database.Persist.loadConfig >>=
                    Database.Persist.applyEnv
                else herokuConf

    p <- Database.Persist.createPoolConfig (dbconf :: Settings.PersistConf)
    logger <- mkLogger True stdout
    let foundation = App conf s p manager dbconf logger

    -- Perform database migration using our application's logging settings.
    runLoggingT
        (Database.Persist.runPool dbconf (runMigration migrateAll) p)
        (messageLoggerSource foundation logger)

    -- TODO: combine this with above
    runLoggingT
        (Database.Persist.runPool dbconf (runMigration migrateComments) p)
        (messageLoggerSource foundation logger)

    return foundation

-- for yesod devel
getApplicationDev :: IO (Int, Application)
getApplicationDev =
    defaultDevelApp loader makeApplication
  where
    loader = Yesod.Default.Config.loadConfig (configSettings Development)