{-# Language QuasiQuotes #-}

module EVM.TestUtils where

import Data.Text
import qualified Data.Text as T
import qualified Data.Text.IO as T
import qualified Paths_hevm as Paths
import Data.String.Here
import System.Directory
import System.IO.Temp
import GHC.IO.Handle (hClose)
import System.Process (readProcess)

import EVM.Solidity
import EVM.Solvers
import EVM.Dapp
import EVM.UnitTest
import EVM.Fetch (RpcInfo)
import qualified EVM.TTY as TTY

runDappTestCustom :: FilePath -> Text -> Maybe Integer -> Bool -> RpcInfo -> IO Bool
runDappTestCustom testFile match maxIter ffiAllowed rpcinfo = do
  root <- Paths.getDataDir
  (json, _) <- compileWithDSTest testFile
  --T.writeFile "output.json" json
  withCurrentDirectory root $ do
    withSystemTempFile "output.json" $ \file handle -> do
      hClose handle
      T.writeFile file json
      withSolvers Z3 1 Nothing $ \solvers -> do
        opts <- testOpts solvers root json match maxIter ffiAllowed rpcinfo
        dappTest opts file Nothing

runDappTest :: FilePath -> Text -> IO Bool
runDappTest testFile match = runDappTestCustom testFile match Nothing True Nothing

debugDappTest :: FilePath -> RpcInfo -> IO ()
debugDappTest testFile rpcinfo = do
  root <- Paths.getDataDir
  (json, _) <- compileWithDSTest testFile
  --TIO.writeFile "output.json" json
  withCurrentDirectory root $ do
    withSystemTempFile "output.json" $ \file handle -> do
      hClose handle
      T.writeFile file json
      withSolvers Z3 1 Nothing $ \solvers -> do
        opts <- testOpts solvers root json ".*" Nothing True rpcinfo
        TTY.main opts root file

testOpts :: SolverGroup -> FilePath -> Text -> Text -> Maybe Integer -> Bool -> RpcInfo -> IO UnitTestOptions
testOpts solvers root solcJson match maxIter allowFFI rpcinfo = do
  srcInfo <- case readJSON solcJson of
               Nothing -> error "Could not read solc json"
               Just (contractMap, asts, sources) -> do
                 sourceCache <- makeSourceCache sources asts
                 pure $ dappInfo root contractMap sourceCache

  params <- getParametersFromEnvironmentVariables Nothing

  pure UnitTestOptions
    { solvers = solvers
    , rpcInfo = rpcinfo
    , maxIter = maxIter
    , askSmtIters = Nothing
    , smtDebug = False
    , smtTimeout = Nothing
    , solver = Nothing
    , covMatch = Nothing
    , verbose = Just 1
    , match = match
    , maxDepth = Nothing
    , fuzzRuns = 100
    , replay = Nothing
    , vmModifier = id
    , testParams = params
    , dapp = srcInfo
    , ffiAllowed = allowFFI
    }

compileWithDSTest :: FilePath -> IO (Text, Text)
compileWithDSTest src =
  withSystemTempFile "input.json" $ \file handle -> do
    hClose handle
    dsTest <- readFile =<< Paths.getDataFileName "test/contracts/lib/test.sol"
    erc20 <- readFile =<< Paths.getDataFileName "test/contracts/lib/erc20.sol"
    testFilePath <- Paths.getDataFileName src
    testFile <- readFile testFilePath
    T.writeFile file
      [i|
      {
        "language": "Solidity",
        "sources": {
          "ds-test/test.sol": {
            "content": ${dsTest}
          },
          "lib/erc20.sol": {
            "content": ${erc20}
          },
          "test.sol": {
            "content": ${testFile}
          }
        },
        "settings": {
          "metadata": {
            "useLiteralContent": true
          },
          "outputSelection": {
            "*": {
              "*": [
                "metadata",
                "evm.bytecode",
                "evm.deployedBytecode",
                "abi",
                "storageLayout",
                "evm.bytecode.sourceMap",
                "evm.bytecode.linkReferences",
                "evm.bytecode.generatedSources",
                "evm.deployedBytecode.sourceMap",
                "evm.deployedBytecode.linkReferences",
                "evm.deployedBytecode.generatedSources"
              ],
              "": [
                "ast"
              ]
            }
          }
        }
      }
      |]
    x <- T.pack <$>
      readProcess
        "solc"
        ["--allow-paths", file, "--standard-json", file]
        ""
    return (x, T.pack testFilePath)