{-# LANGUAGE DataKinds           #-}
{-# LANGUAGE QuasiQuotes         #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TemplateHaskell     #-}
{-# LANGUAGE RecordWildCards  #-}

module Handler.Version where

import           Startlude

import           Control.Monad.Trans.Maybe
import           Yesod.Core

import           Foundation
import           Handler.Types.Status
import           Lib.Registry
import           Lib.Types.Emver
import           Settings
import           System.FilePath                ( (</>) )
import           Util.Shared

getVersionR :: Handler AppVersionRes
getVersionR = do
    rv <- AppVersionRes . registryVersion . appSettings <$> getYesod
    pure . rv $ Nothing

getVersionAppR :: Text -> Handler (Maybe AppVersionRes)
getVersionAppR appId = do
    appsDir <- (</> "apps") . resourcesDir . appSettings <$> getYesod
    getVersionWSpec appsDir appExt
    where appExt = Extension (toS appId) :: Extension "s9pk"

getVersionSysR :: Text -> Handler (Maybe AppVersionRes)
getVersionSysR sysAppId = runMaybeT $ do
    sysDir <- (</> "sys") . resourcesDir . appSettings <$> getYesod
    avr    <- MaybeT $ getVersionWSpec sysDir sysExt
    pure $ avr { appVersionMinCompanion = Just $ Version (1, 1, 0, 0) }
    where sysExt = Extension (toS sysAppId) :: Extension ""

getVersionWSpec :: KnownSymbol a => FilePath -> Extension a -> Handler (Maybe AppVersionRes)
getVersionWSpec rootDir ext = do
    av <- getVersionFromQuery rootDir ext
    pure $ liftA2 AppVersionRes av (pure Nothing)