module Language.Docker.IntegrationSpec where

import qualified Data.Text as Text
import qualified Data.Text.IO
import qualified Data.Text.Lazy.IO as L
import Language.Docker.Parser
import Language.Docker.PrettyPrint (prettyPrint, prettyPrintDockerfile)
import Test.HUnit hiding (Label)
import Test.Hspec
import Text.Megaparsec hiding (Label)

spec :: Spec
spec = do
  describe "parse file" $ do
    it "1.Dockerfile" $ do
      parsed <- parseFile "test/fixtures/1.Dockerfile"
      case parsed of
        Right a -> L.putStr $ prettyPrint a
        Left err -> assertFailure $ errorBundlePretty err

    it "2.Dockerfile" $ do
      parsed <- parseFile "test/fixtures/2.Dockerfile"
      case parsed of
        Right a -> L.putStr $ prettyPrint a
        Left err -> assertFailure $ errorBundlePretty err

    it "3.Dockerfile" $ do
      parsed <- parseFile "test/fixtures/3.Dockerfile"
      case parsed of
        Right a -> L.putStr $ prettyPrint a
        Left err -> assertFailure $ errorBundlePretty err

    it "4.Dockerfile" $ do
      parsed <- parseFile "test/fixtures/4.Dockerfile"
      case parsed of
        Right a -> L.putStr $ prettyPrint a
        Left err -> assertFailure $ errorBundlePretty err

    it "5.Dockerfile" $ do
      parsed <- parseFile "test/fixtures/5.Dockerfile"
      case parsed of
        Right a -> L.putStr $ prettyPrint a
        Left err -> assertFailure $ errorBundlePretty err

  describe "escape character detection logic" $ do
    it "ensure the pretty printer respects escape pragmas" $ do
      fromDisk <- Data.Text.IO.readFile "test/fixtures/6.Dockerfile"
      let ast = parseText fromDisk
       in case ast of
          Right a ->
             let fromAst = prettyPrintDockerfile a
              in assertEqual "error" fromDisk (Text.pack . show $ fromAst)
          Left err -> assertFailure $ errorBundlePretty err

    it "ensure escape character '\\' is used as default" $ do
      fromDisk <- Data.Text.IO.readFile "test/fixtures/7.Dockerfile"
      let ast = parseText fromDisk
       in case ast of
          Right a ->
             let fromAst = prettyPrintDockerfile a
              in assertEqual "error" fromDisk (Text.pack . show $ fromAst)
          Left err -> assertFailure $ errorBundlePretty err

    it "ensure the printer ignores escape pragmas in the wrong place" $ do
      fromDisk <- Data.Text.IO.readFile "test/fixtures/8.Dockerfile"
      let ast = parseText fromDisk
       in case ast of
          Right a ->
             let fromAst = prettyPrintDockerfile a
              in assertEqual "error" fromDisk (Text.pack . show $ fromAst)
          Left err -> assertFailure $ errorBundlePretty err

  describe "parse text" $ do
    it "1.Dockerfile" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/1.Dockerfile"
      case parseText (Text.replace "\n" "\r\n" contents) of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "2.Dockerfile" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/2.Dockerfile"
      case parseText contents of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "3.Dockerfile" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/3.Dockerfile"
      case parseText contents of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "4.Dockerfile" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/4.Dockerfile"
      case parseText contents of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "5.Dockerfile" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/5.Dockerfile"
      case parseText contents of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "1.Dockerfile crlf" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/1.Dockerfile"
      case parseText contents of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "2.Dockerfile crlf" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/2.Dockerfile"
      case parseText (Text.replace "\n" "\r\n" contents) of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "3.Dockerfile crlf" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/3.Dockerfile"
      case parseText (Text.replace "\n" "\r\n" contents) of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "4.Dockerfile crlf" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/4.Dockerfile"
      case parseText (Text.replace "\n" "\r\n" contents) of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "5.Dockerfile crlf" $ do
      contents <- Data.Text.IO.readFile "test/fixtures/5.Dockerfile"
      case parseText (Text.replace "\n" "\r\n" contents) of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

  describe "parse utf encoded files with byte order mark" $ do
    it "Dockerfile UTF-8 with BOM" $ do
      parsed <- parseFile "test/fixtures/Dockerfile.bom.utf8"
      case parsed of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "Dockerfile UTF-16 Little Endian with BOM" $ do
      parsed <- parseFile "test/fixtures/Dockerfile.bom.utf16le"
      case parsed of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "Dockerfile UTF-16 Big Endian with BOM" $ do
      parsed <- parseFile "test/fixtures/Dockerfile.bom.utf16be"
      case parsed of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "Dockerfile UTF-32 Little Endian with BOM" $ do
      parsed <- parseFile "test/fixtures/Dockerfile.bom.utf32le"
      case parsed of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err

    it "Dockerfile UTF-32 Big Endian with BOM" $ do
      parsed <- parseFile "test/fixtures/Dockerfile.bom.utf32be"
      case parsed of
        Right _ -> return ()
        Left err -> assertFailure $ errorBundlePretty err