{- FOURMOLU_DISABLE -}
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{- FOURMOLU_ENABLE -}
{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE OverloadedRecordDot #-}
{-# LANGUAGE RecordWildCards #-}

module Language.EO.Phi.DataizeSpec where

import Control.Monad (forM_)
import Test.Hspec

import Language.EO.Phi (printTree)
import Language.EO.Phi qualified as Phi
import Language.EO.Phi.Dataize (dataizeRecursively)
import Language.EO.Phi.Dataize.Context (defaultContext)
import Language.EO.Phi.Dependencies (deepMergePrograms)
import Language.EO.Phi.Rules.Common (equalObject)
import Language.EO.Phi.Rules.Yaml (convertRuleNamed, parseRuleSetFromFile, rules)
import Test.EO.Phi (DataizationResult (Bytes, Object), DataizeTest (..), DataizeTestGroup (..), dataizationTests, progToObj)

newtype ObjectOrBytes = ObjectOrBytes (Either Phi.Object Phi.Bytes)

instance Show ObjectOrBytes where
  show (ObjectOrBytes (Left obj)) = printTree obj
  show (ObjectOrBytes (Right bytes)) = printTree bytes

instance Eq ObjectOrBytes where
  ObjectOrBytes (Left x) == ObjectOrBytes (Left y) =
    x `equalObject` y
  ObjectOrBytes (Right x) == ObjectOrBytes (Right y) =
    x == y
  _ == _ = False

spec :: Spec
spec = do
  DataizeTestGroup{..} <- runIO (dataizationTests "test/eo/phi/dataization.yaml")
  describe title do
    forM_
      [ ("Old Yegor's rules", "test/eo/phi/rules/yegor.yaml")
      -- TODO #617:10m Enable
      -- , ("New Yegor's rules", "test/eo/phi/rules/new.yaml")
      ]
      $ \(rulesTitle, rulesFile) -> do
        ruleset <- runIO $ parseRuleSetFromFile rulesFile
        let rules = map convertRuleNamed ruleset.rules
        describe rulesTitle do
          forM_ tests $
            \test -> do
              deps <- runIO $ mapM Phi.unsafeParseProgramFromFile test.dependencies
              let mergedProgs = case deepMergePrograms (test.input : deps) of
                    Left err -> error ("Error merging programs: " ++ err)
                    Right prog -> prog
              let ctx = defaultContext rules (progToObj mergedProgs)
              let inputObj = progToObj test.input
              let expectedResult = case test.output of
                    Object obj -> Left obj
                    Bytes bytes -> Right bytes
              it test.name $ do
                let dataizedResult = dataizeRecursively ctx inputObj
                ObjectOrBytes dataizedResult `shouldBe` ObjectOrBytes expectedResult