module ApiSpec (apiSpec) where

import Network.HTTP.Client
import Network.HTTP.Client.TLS
import System.Environment (getEnv)
import Test.Hspec
import qualified Data.Text as T
import qualified Data.Vector as V

import OpenAI.Client

makeClient :: IO OpenAIClient
makeClient =
  do manager <- newManager tlsManagerSettings
     apiKey <- T.pack <$> getEnv "OPENAI_KEY"
     pure (makeOpenAIClient apiKey manager 2)

forceSuccess :: (MonadFail m, Show a) => m (Either a b) -> m b
forceSuccess req =
  req >>= \res ->
  case res of
    Left err -> fail (show err)
    Right ok -> pure ok

apiSpec :: Spec
apiSpec =
  describe "core api" apiTests

apiTests :: SpecWith ()
apiTests =
  beforeAll makeClient $
  do describe "file api" $
       do it "allows creating one" $ \cli ->
            do let file =
                     FileCreate
                     { fcPurpose = "search"
                     , fcDocuments = [FileHunk "Test 1" Nothing, FileHunk "text 2" (Just "foo")]
                     }
               res <- forceSuccess $ createFile cli file
               _ <- forceSuccess $ deleteFile cli (fId res)
               pure ()
     describe "answer api" $
       do it "works" $ \cli ->
            do let file =
                     FileCreate
                     { fcPurpose = "search"
                     , fcDocuments =
                         [ FileHunk "Cities in California: San Francisco, Los Angeles" (Just "cali")
                         , FileHunk "Tasty fruit: Apple, Orange" (Just "fruit")
                         , FileHunk "Cities in Germany: Freiburg, Berlin" (Just "germany")
                         ]
                     }
               res <- forceSuccess $ createFile cli file
               let searchReq =
                     AnswerReq
                     { arFile = Just (fId res)
                     , arDocuments = Nothing
                     , arQuestion = "Where is San Francisco?"
                     , arSearchModel = EngineId "babbage"
                     , arModel = EngineId "davinci"
                     , arExamplesContext = "Good programming languages: Haskell, PureScript"
                     , arExamples = [["Is PHP a good programming language?", "No, sorry."]]
                     , arReturnMetadata = True
                     }
               answerRes <- forceSuccess $ getAnswer cli searchReq
               T.unpack (head (arsAnswers answerRes)) `shouldContain` ("California" :: String)
               _ <- forceSuccess $ deleteFile cli (fId res)
               pure ()
     describe "engines" $
       do it "lists engines" $ \cli ->
            do res <- forceSuccess $ listEngines cli
               V.null (olData res) `shouldBe` False
          it "retrieve engine" $ \cli ->
            do engineList <- forceSuccess $ listEngines cli
               let firstEngine = V.head (olData engineList)
               engine <- forceSuccess $ getEngine cli (eId firstEngine)
               engine `shouldBe` firstEngine
     describe "text completion" $
       do it "works (smoke test)" $ \cli ->
            do firstEngine <- V.head . olData <$> forceSuccess (listEngines cli)
               completionResults <-
                 forceSuccess $
                 completeText cli (eId firstEngine) $
                 (defaultTextCompletionCreate "Why is the house ")
                 { tccrMaxTokens = Just 2 }
               V.length (tcChoices completionResults) `shouldBe` 1
               T.length (tccText (V.head (tcChoices completionResults))) `shouldNotBe` 0
     describe "document search" $
       do it "works (smoke test)" $ \cli ->
            do firstEngine <- V.head . olData <$> forceSuccess (listEngines cli)
               searchResults <-
                 forceSuccess $
                 searchDocuments cli (eId firstEngine) $
                 SearchResultCreate
                 { sccrDocuments = Just $ V.fromList ["pool", "gym", "night club"]
                 , sccrFile = Nothing
                 , sccrQuery = "swimmer"
                 , sccrReturnMetadata = False
                 }
               V.length (olData searchResults) `shouldBe` 3
     describe "file based document search" $
       do it "works" $ \cli ->
            do let file =
                     FileCreate
                     { fcPurpose = "search"
                     , fcDocuments =
                         [ FileHunk "pool" (Just "pool")
                         , FileHunk "gym" (Just "gym")
                         , FileHunk "night club" (Just "nc")
                         ]
                     }
               createRes <- forceSuccess $ createFile cli file
               let searchReq =
                     SearchResultCreate
                     { sccrFile = Just (fId createRes)
                     , sccrDocuments = Nothing
                     , sccrQuery = "pool"
                     , sccrReturnMetadata = True
                     }
               searchRes <- forceSuccess $ searchDocuments cli (EngineId "ada") searchReq
               let res = V.head (olData searchRes)
               srDocument res `shouldBe` 0 -- pool
               srMetadata res `shouldBe` Just "pool"
               _ <- forceSuccess $ deleteFile cli (fId createRes)
               pure ()