{- FOURMOLU_DISABLE -}
-- The MIT License (MIT)

-- Copyright (c) 2016-2024 Objectionary.com

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-- of this software and associated documentation files (the "Software"), to deal
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-- copies of the Software, and to permit persons to whom the Software is
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-- The above copyright notice and this permission notice shall be included
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-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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-- SOFTWARE.
{- FOURMOLU_ENABLE -}
{-# LANGUAGE BlockArguments #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedLists #-}
{-# LANGUAGE OverloadedRecordDot #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE TypeApplications #-}

module Language.EO.PhiSpec where

import Control.Monad (forM_)
import Data.Char (isSpace)
import Data.List (dropWhileEnd)
import Data.String (IsString (..))
import Data.Yaml (decodeFileThrow)
import Language.EO.Phi (Binding (..), Object, Program (..), normalize, printTree)
import Language.EO.Phi.Metrics.Collect (getProgramMetrics)
import Language.EO.Phi.Metrics.Data (BindingsByPathMetrics (..), ProgramMetrics (..))
import Language.EO.Phi.Rules.Common (equalProgram)
import Test.EO.Phi (PhiTest (..), PhiTestGroup (..), allPhiTests)
import Test.Hspec (Spec, describe, it, runIO, shouldBe, shouldSatisfy)
import Test.Metrics.Phi (MetricsTest (..), MetricsTestSet (..))

applyRule :: (Object -> [Object]) -> Program -> [Program]
applyRule rule = \case
  Program [AlphaBinding name obj] -> do
    r <- rule obj
    pure $ Program [AlphaBinding name r]
  _ -> []

spec :: Spec
spec = do
  describe "Programs translated from EO" $ do
    phiTests <- runIO (allPhiTests "test/eo/phi/from-eo/")
    forM_ phiTests $ \PhiTestGroup{..} ->
      describe title $
        forM_ tests $
          \PhiTest{..} -> do
            describe "normalize" $
              it name $
                normalize input `shouldSatisfy` equalProgram normalized
            describe "pretty-print" $
              it name $
                printTree input `shouldBe` trim prettified
  describe "Metrics" $ do
    metricsTests <- runIO $ decodeFileThrow @_ @MetricsTestSet "test/eo/phi/metrics.yaml"
    forM_ metricsTests.tests $ \test -> do
      it test.title $
        getProgramMetrics (fromString @Program test.phi) ((.path) <$> test.metrics.bindingsByPathMetrics) `shouldBe` Right test.metrics

trim :: String -> String
trim = dropWhileEnd isSpace