{-# LANGUAGE OverloadedStrings #-}
{-|
Copyright   : (c) 2015 Julien Tanguy
License     : BSD3

Maintainer  : julien.tanguy@jhome.fr


This test suite is based on the pymacaroons test suite:
<https://github.com/ecordell/pymacaroons>
-}
module Crypto.Macaroon.Instances where

import           Control.Monad
import           Data.Byteable
import qualified Data.ByteString       as BS
import qualified Data.ByteString.Char8 as B8
import           Data.Hex
import           Data.List
import           Test.Tasty
import           Test.Tasty.HUnit
import           Test.Tasty.QuickCheck

import           Crypto.Macaroon

newtype Url = Url { unUrl :: BS.ByteString } deriving (Show)

instance Arbitrary Url where
    arbitrary = do
        protocol <- elements ["http://"]
        name <-  fmap (intercalate ".") <$> listOf1 . listOf1 $ elements ['a'..'z']
        domain <- elements [".com",".net"]
        return . Url . B8.pack $ (protocol ++ name ++ domain)

newtype BSSecret = BSSecret { unSecret :: BS.ByteString } deriving (Show)

instance Arbitrary BSSecret where
    arbitrary = BSSecret . B8.pack <$> scale (*3) arbitrary

newtype Identifier = Identifier { unIdent :: BS.ByteString } deriving (Show)

instance Arbitrary Identifier where
    arbitrary = Identifier . B8.pack <$>(scale (*3) . listOf1 . elements $ ['a'..'z'])

newtype EquationLike = EquationLike { unEqlike :: BS.ByteString } deriving (Show)

instance Arbitrary EquationLike where
    arbitrary = do
        keylen <- choose (3,8)
        key <- B8.pack <$> vectorOf keylen (elements ['a'..'z'])
        val <- B8.pack <$> (scale (*3) . listOf1 . elements $ ['a'..'z'])
        return $ EquationLike (BS.concat [ key, " = ", val])


data SimpleMac = SimpleMac { secret :: BS.ByteString, macaroon :: Macaroon } deriving Show

instance Arbitrary SimpleMac where
    arbitrary = do
        secret <- unSecret <$> arbitrary
        location <- unUrl <$> arbitrary
        ident <- unIdent <$> arbitrary
        fpcavs <- listOf arbitrary
        let mac = foldl (flip addFirstPartyCaveat) (create secret ident location) (map unEqlike fpcavs)
        return $ SimpleMac secret mac