{-# LANGUAGE CPP                    #-}
{-# LANGUAGE ConstraintKinds        #-}
{-# LANGUAGE DataKinds              #-}
{-# LANGUAGE FlexibleContexts       #-}
{-# LANGUAGE FlexibleInstances      #-}
{-# LANGUAGE GADTs                  #-}
{-# LANGUAGE MultiParamTypeClasses  #-}
{-# LANGUAGE OverloadedStrings      #-}
{-# LANGUAGE PolyKinds              #-}
{-# LANGUAGE ScopedTypeVariables    #-}
{-# LANGUAGE TypeFamilies           #-}
{-# LANGUAGE TypeOperators          #-}
{-# LANGUAGE UndecidableInstances   #-}
{-# OPTIONS_GHC -freduction-depth=100 #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
{-# OPTIONS_GHC -fno-warn-name-shadowing #-}

module Servant.SuccessSpec (spec) where

import           Prelude ()
import           Prelude.Compat

import           Control.Arrow
                 (left)
import           Control.Concurrent.STM
                 (atomically)
import           Control.Concurrent.STM.TVar
                 (newTVar, readTVar)
import           Data.Foldable
                 (forM_, toList)
import           Data.Maybe
                 (listToMaybe)
import           Data.Monoid ()
import qualified Network.HTTP.Client                  as C
import qualified Network.HTTP.Types                   as HTTP
import           Test.Hspec
import           Test.Hspec.QuickCheck
import           Test.HUnit
import           Test.QuickCheck

import           Servant.API
                 (NoContent (NoContent), getHeaders)
import           Servant.Client
import qualified Servant.Client.Core.Request as Req
import           Servant.Test.ComprehensiveAPI
import           Servant.ClientTestUtils

-- This declaration simply checks that all instances are in place.
_ = client comprehensiveAPIWithoutStreaming

spec :: Spec
spec = describe "Servant.SuccessSpec" $ do
    successSpec

successSpec :: Spec
successSpec = beforeAll (startWaiApp server) $ afterAll endWaiApp $ do
    it "Servant.API.Get root" $ \(_, baseUrl) -> do
      left show <$> runClient getRoot baseUrl  `shouldReturn` Right carol

    it "Servant.API.Get" $ \(_, baseUrl) -> do
      left show <$> runClient getGet baseUrl  `shouldReturn` Right alice

    describe "Servant.API.Delete" $ do
      it "allows empty content type" $ \(_, baseUrl) -> do
        left show <$> runClient getDeleteEmpty baseUrl `shouldReturn` Right NoContent

      it "allows content type" $ \(_, baseUrl) -> do
        left show <$> runClient getDeleteContentType baseUrl `shouldReturn` Right NoContent

    it "Servant.API.Capture" $ \(_, baseUrl) -> do
      left show <$> runClient (getCapture "Paula") baseUrl `shouldReturn` Right (Person "Paula" 0)

    it "Servant.API.CaptureAll" $ \(_, baseUrl) -> do
      let expected = [Person "Paula" 0, Person "Peta" 1]
      left show <$> runClient (getCaptureAll ["Paula", "Peta"]) baseUrl `shouldReturn` Right expected

    it "Servant.API.ReqBody" $ \(_, baseUrl) -> do
      let p = Person "Clara" 42
      left show <$> runClient (getBody p) baseUrl `shouldReturn` Right p

    it "Servant.API FailureResponse" $ \(_, baseUrl) -> do
      left show <$> runClient (getQueryParam (Just "alice")) baseUrl `shouldReturn` Right alice
      Left (FailureResponse req _) <- runClient (getQueryParam (Just "bob")) baseUrl
      Req.requestPath req `shouldBe` (baseUrl, "/param")
      toList (Req.requestQueryString req) `shouldBe` [("name", Just "bob")]
      Req.requestMethod req `shouldBe` HTTP.methodGet

    it "Servant.API.QueryParam" $ \(_, baseUrl) -> do
      left show <$> runClient (getQueryParam (Just "alice")) baseUrl `shouldReturn` Right alice
      Left (FailureResponse _ r) <- runClient (getQueryParam (Just "bob")) baseUrl
      responseStatusCode r `shouldBe` HTTP.Status 400 "bob not found"

    it "Servant.API.QueryParam.QueryParams" $ \(_, baseUrl) -> do
      left show <$> runClient (getQueryParams []) baseUrl `shouldReturn` Right []
      left show <$> runClient (getQueryParams ["alice", "bob"]) baseUrl
        `shouldReturn` Right [Person "alice" 0, Person "bob" 1]

    context "Servant.API.QueryParam.QueryFlag" $
      forM_ [False, True] $ \ flag -> it (show flag) $ \(_, baseUrl) -> do
        left show <$> runClient (getQueryFlag flag) baseUrl `shouldReturn` Right flag

    it "Servant.API.Raw on success" $ \(_, baseUrl) -> do
      res <- runClient (getRawSuccess HTTP.methodGet) baseUrl
      case res of
        Left e -> assertFailure $ show e
        Right r -> do
          responseStatusCode r `shouldBe` HTTP.status200
          responseBody r `shouldBe` "rawSuccess"

    it "Servant.API.Raw should return a Left in case of failure" $ \(_, baseUrl) -> do
      res <- runClient (getRawFailure HTTP.methodGet) baseUrl
      case res of
        Right _ -> assertFailure "expected Left, but got Right"
        Left (FailureResponse _ r) -> do
          responseStatusCode r `shouldBe` HTTP.status400
          responseBody r `shouldBe` "rawFailure"
        Left e -> assertFailure $ "expected FailureResponse, but got " ++ show e

    it "Returns headers appropriately" $ \(_, baseUrl) -> do
      res <- runClient getRespHeaders baseUrl
      case res of
        Left e -> assertFailure $ show e
        Right val -> getHeaders val `shouldBe` [("X-Example1", "1729"), ("X-Example2", "eg2")]

    it "Stores Cookie in CookieJar after a redirect" $ \(_, baseUrl) -> do
      mgr <- C.newManager C.defaultManagerSettings
      cj <- atomically . newTVar $ C.createCookieJar []
      _ <- runClientM (getRedirectWithCookie HTTP.methodGet) (ClientEnv mgr baseUrl (Just cj))
      cookie <- listToMaybe . C.destroyCookieJar <$> atomically (readTVar cj)
      C.cookie_name <$> cookie `shouldBe` Just "testcookie"
      C.cookie_value <$> cookie `shouldBe` Just "test"

    modifyMaxSuccess (const 20) $ do
      it "works for a combination of Capture, QueryParam, QueryFlag and ReqBody" $ \(_, baseUrl) ->
        property $ forAllShrink pathGen shrink $ \(NonEmpty cap) num flag body ->
          ioProperty $ do
            result <- left show <$> runClient (getMultiple cap num flag body) baseUrl
            return $
              result === Right (cap, num, flag, body)