module W3C.W3CAssertions
  ( runManifestTests,
    assertIsIsomorphic,
    assertIsParsed,
    assertIsNotParsed,
    nodeURI,
  )
where

import Data.RDF
import Data.Semigroup ((<>))
import qualified Data.Text as T
import qualified Test.HUnit as TU
import Test.Tasty
import W3C.Manifest

runManifestTests :: (TestEntry -> TestTree) -> Manifest -> TestTree
runManifestTests mfEntryToTest manifest =
  testGroup (T.unpack $ description manifest) $ mfEntryToTest <$> entries manifest

assertIsIsomorphic :: IO (RDF TList) -> IO (RDF TList) -> IO ()
assertIsIsomorphic r1 r2 = do
  gr1 <- r1
  gr2 <- r2
  TU.assertBool ("not isomorphic: " <> show gr1 <> " compared with " <> show gr2) (isSame gr1 gr2) -- (isGraphIsomorphic gr1 gr2)
  where
    -- noBlankNodes g = (all noBlanks . expandTriples) g
    -- noBlanks (Triple s p o) =
    --   not (blankNode s)
    --     && not (blankNode p)
    --     && not (blankNode o)
    -- blankNode (BNode _) = True
    -- blankNode (BNodeGen _) = True
    -- blankNode _ = False
    isSame g1 g2 = isIsomorphic g1 g2

-- if (noBlankNodes g1) && (noBlankNodes g2)
-- -- can compare URIs and literals as well as structure
-- then isIsomorphic g1 g2
-- -- cannot compare blank nodes with generated blank nodes,
-- -- so instead just compare the RDF graph structure of the
-- -- mf:action parsed RDF with the expected mf:result structure.
-- else isGraphIsomorphic g1 g2

assertIsParsed :: IO (Either ParseFailure (RDF TList)) -> TU.Assertion
assertIsParsed r1 = do
  gr1 <- r1
  TU.assertBool ("unable to parse, reason:\n" <> show gr1) (isParsed gr1)

assertIsNotParsed :: IO (Either ParseFailure (RDF TList)) -> TU.Assertion
assertIsNotParsed r1 = do
  gr1 <- r1
  TU.assertBool ("parsed unexpectedly:\n" <> show gr1) (not (isParsed gr1))

isParsed :: Either a b -> Bool
isParsed (Left _) = False
isParsed (Right _) = True

nodeURI :: Node -> String
nodeURI (UNode u) = T.unpack u
nodeURI node = error $ "W3CAssertions: unexpected node in `nodeURI`: " <> show node