
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE QuasiQuotes #-}

module Offline.JSON (tests) where

import Data.Aeson
import Data.Either
import Gargantext.API.Node.Corpus.New
import Gargantext.API.Node.Corpus.Types
import Gargantext.Core.Types.Phylo
import Gargantext.Core.Viz.Phylo.API
import Prelude
import Test.Tasty
import Test.Tasty.HUnit
import Test.Tasty.QuickCheck
import Text.RawString.QQ
import qualified Data.ByteString as B
import qualified Data.ByteString.Lazy.Char8 as C8

import Paths_gargantext

jsonRoundtrip :: (Show a, FromJSON a, ToJSON a, Eq a) => a -> Property
jsonRoundtrip a =
  counterexample ("Parsed JSON: " <> C8.unpack (encode a)) $ eitherDecode (encode a) === Right a

tests :: TestTree
tests = testGroup "JSON" [
    testProperty "Datafield roundtrips" (jsonRoundtrip @Datafield)
  , testProperty "WithQuery roundtrips" (jsonRoundtrip @WithQuery)
  , testCase "WithQuery frontend compliance" testWithQueryFrontend
  , testGroup "Phylo" [
    testProperty "PeriodToNode"  (jsonRoundtrip @PeriodToNodeData)
  , testProperty "GraphData"     (jsonRoundtrip @GraphData)
  , testProperty "GraphDataData" (jsonRoundtrip @GraphDataData)
  , testProperty "ObjectData"    (jsonRoundtrip @ObjectData)
  , testProperty "PhyloData"     (jsonRoundtrip @PhyloData)
  , testProperty "LayerData"     (jsonRoundtrip @LayerData)
  , testCase "can parse bpa_phylo_test.json" testParseBpaPhylo
  , testCase "can parse open_science.json" testOpenSciencePhylo
  ]
  ]

testWithQueryFrontend :: Assertion
testWithQueryFrontend = do
  case  eitherDecode @WithQuery (C8.pack cannedWithQueryPayload) of
   Left err -> fail $ "JSON instance will break frontend!: JSON decoding returned: " <> err
   Right _ -> pure ()

-- The aim of this type is to catch regressions in the frontend serialisation; this
-- is what the frontend currently expects, and therefore if we were to change the JSON
-- instances, this test would fail, and we will be notified.
cannedWithQueryPayload :: String
cannedWithQueryPayload = [r| {"query":"Haskell","node_id":138,"lang":"EN","flowListWith":{"type":"MyListsFirst"},"datafield": { "External": "Arxiv"},"databases":"Arxiv"} |]

testParseBpaPhylo :: Assertion
testParseBpaPhylo = do
  pth      <- getDataFileName "test-data/phylo/bpa_phylo_test.json"
  jsonBlob <- B.readFile pth
  case eitherDecodeStrict' @GraphData jsonBlob of
    Left err    -> error err
    Right _     -> pure ()

testOpenSciencePhylo :: Assertion
testOpenSciencePhylo = do
  pth      <- getDataFileName "test-data/phylo/open_science.json"
  jsonBlob <- B.readFile pth
  case eitherDecodeStrict' @PhyloData jsonBlob of
    Left err    -> error err
    Right _     -> pure ()
