{-# LANGUAGE OverloadedStrings #-}

module Main (main) where

import Test.Hspec
import Test.Hspec.QuickCheck
import Test.QuickCheck

import Data.MessagePack as MP
import qualified Data.Map as M
import qualified Data.Text as Txt

import Graphics.Text.Font.Choose
import Graphics.Text.Font.Choose.Internal.Test

main :: IO ()
main = hspec $ do
    describe "Canary" $ do
        it "runs fine" $ do
            True `shouldBe` True
    describe "Roundtrips" $ do
        describe "converts MessagePack & back" $ do
            prop "CharSet" $ \x ->
                MP.unpack (MP.pack x) `shouldBe` Just (x :: CharSet')
            prop "FontSet" $ \x -> let y = Prelude.map unPattern x
                in MP.unpack (MP.pack y) `shouldBe` Just y
            prop "LangSet" $ \x ->
                MP.unpack (MP.pack x) `shouldBe` Just (x :: LangSet')
            prop "ObjectSet" $ \x ->
                MP.unpack (MP.pack x) `shouldBe` Just (x :: ObjectSet)
            prop "Pattern" $ \x ->
                MP.unpack (MP.pack x) `shouldBe` Just (x :: Pattern')
            prop "Range" $ \x ->
                MP.unpack (MP.pack x) `shouldBe` Just (x :: Range)
            prop "StrSet" $ \x ->
                MP.unpack (MP.pack x) `shouldBe` Just (x :: StrSet)
            prop "Value" $ \x ->
                MP.unpack (MP.pack x) `shouldBe` Just (x :: Value)
        describe "through C datastructures" $ do
            prop "StrSet" $ \x -> validStrSet x ==>
                roundtrip testStrSet x `shouldBe` Just (x :: StrSet)
            prop "CharSet" $ \x -> validCharSet' x ==>
                roundtrip testCharSet x `shouldBe` Just (x :: CharSet')
            prop "LangSet" $ \x -> validLangSet' x ==>
                roundtrip testLangSet x `shouldBe` Just (x :: LangSet')
            prop "Range" $ \x -> validRange x ==>
                roundtrip testRange x `shouldBe` Just (x :: Range)
            prop "Matrix" $ \x -> roundtrip testMatrix x `shouldBe`
                    Just (x :: (Double, Double, Double, Double))
            prop "Value" $ \x -> validValue x ==>
                roundtrip testValue x `shouldBe` Just (x :: Value)
            prop "Trivial Pattern" $ \x -> validValue x ==>
                let pat = Pattern' $ M.fromList [("test", [(Strong, x)])]
                in roundtrip testPattern pat `shouldBe` Just pat
            prop "Tuple Pattern" $ \(x, y) -> validValue x && validValue y ==>
                let pat = Pattern' $ M.fromList [("a", [(Strong, x)]), ("b", [(Strong, y)])]
                in roundtrip testPattern pat `shouldBe` Just pat
            let toAscii :: Char -> Char
                toAscii ch = toEnum $ fromEnum ch `mod` 128
            prop "Random-key pattern" $ \x -> all (\y -> toAscii y /= '\0') x ==>
                let pat = Pattern' $ M.fromList [(Txt.pack $ map toAscii $ take 17 x, [(Strong, ValueBool True)])]
                in roundtrip testPattern pat `shouldBe` Just pat
            prop "Pattern" $ \x -> validPattern' x ==>
                roundtrip testPattern x `shouldBe` Just (x :: Pattern')
            prop "FontSet" $ \x -> let y = filter validPattern $ Prelude.map unPattern x
                in validFontSet y ==> roundtrip testFontSet y `shouldBe` Just y