{-# LANGUAGE QuasiQuotes #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE KindSignatures #-}

module TestImport
    ( module TestImport
    , module X
    )
where

import           Startlude
import           Application                    ( makeFoundation
                                                , makeLogWare
                                                )
import           Foundation                    as X
import           Test.Hspec                    as X
import           Yesod.Default.Config2          ( useEnv
                                                , loadYamlSettings
                                                )
import           Yesod.Test                    as X
import           Yesod.Core.Unsafe              ( fakeHandlerGetLogger )
import           Database.Persist.Sql
import           Text.Shakespeare.Text          ( st )
import           Yesod.Core
import qualified Data.Text                     as T

runHandler :: Handler a -> YesodExample RegistryCtx a
runHandler handler = do
    app <- getTestYesod
    fakeHandlerGetLogger appLogger app handler

withApp :: SpecWith (TestApp RegistryCtx) -> Spec
withApp = before $ do
    settings   <- loadYamlSettings ["config/settings.yml"] [] useEnv
    foundation <- makeFoundation settings
    wipeDB foundation
    logWare <- liftIO $ makeLogWare foundation
    return (foundation, logWare)

getTables :: DB [Text]
getTables = do
    tables <- rawSql
        [st|
        SELECT table_name
        FROM information_schema.tables
        WHERE table_schema = 'public'
        AND table_type = 'BASE TABLE';
    |]
        []

    return $ fmap unSingle tables

wipeDB :: RegistryCtx -> IO ()
wipeDB app = runDBWithApp app $ do
    tables     <- getTables
    sqlBackend <- ask

    let escapedTables = map (T.unpack . connEscapeName sqlBackend . DBName) tables
        query         = "TRUNCATE TABLE " ++ (intercalate ", " escapedTables)
    rawExecute (T.pack query) []

runDBtest :: SqlPersistM a -> YesodExample RegistryCtx a
runDBtest query = do
    app <- getTestYesod
    liftIO $ runDBWithApp app query

runDBWithApp :: RegistryCtx -> SqlPersistM a -> IO a
runDBWithApp app query = runSqlPersistMPool query (appConnPool app)

-- A convenient synonym for database access functions
type DB a = forall (m :: * -> *) . (MonadUnliftIO m) => ReaderT SqlBackend m a