{-# LANGUAGE OverloadedStrings #-}

module CabalGolden (golden) where

import qualified Cabal as SUT
import Configuration (Configuration (..))
import Control.Monad.Reader (liftIO)
import Data.ByteString (readFile)
import Data.ByteString.Lazy.Char8 (pack)
import Data.Maybe (fromJust)
import Data.Text (unpack)
import Distribution.SPDX.LicenseId (LicenseId (MIT))
import Initialise (runInitialise)
import Network.URI (parseURI)
import System.FilePath (isExtensionOf, normalise, replaceExtension, takeBaseName)
import Test.Tasty (TestTree, testGroup)
import Test.Tasty.Golden (findByExtension, goldenVsStringDiff)
import Prelude hiding (readFile)

golden :: IO TestTree
golden =
  testGroup "Cabal.convert"
    . map convertTest
    . filter (not . (".golden.cabal" `isExtensionOf`))
    <$> findByExtension [".cabal"] d
  where
    d = normalise "test/initialise/data"

convertTest :: FilePath -> TestTree
convertTest p = goldenVsStringDiff n diff gold action
  where
    n = takeBaseName p
    diff a b = ["diff", "-u", a, b]
    gold = p `replaceExtension` ".golden.cabal"
    action = do
      contents <- liftIO (readFile p)
      pack . unpack <$> runInitialise (SUT.convert contents) configuration
    configuration =
      Configuration
        { name = "sentinel",
          homepage = fromJust (parseURI "https://github.com/sentinel/sentinel.git"),
          author = "Sentinel",
          maintainer = "sentinel@example.com",
          licence = MIT,
          path = ".",
          year = 1970
        }