playground.nim

import jester, asyncdispatch, os, osproc, strutils, threadpool

proc respondOnReady(fv: FlowVar[TaintedString], resp: Response) {.async.} =
  while true:
    if fv.isReady:
      assert ^fv == ""
      resp.send(Http200, nil, readFile("tmp/logfile.txt"))
      removeDir("./tmp")

    await sleepAsync(500)

proc compile(resp: Response, code: string) =
  let currentDir = getCurrentDir()
  createDir("./tmp")
  copyFileWithPermissions("./test/script.sh", "./tmp/script.sh")
  writeFile("./tmp/in.nim", code)

  let fv = spawn execProcess("""
    ./docker_timeout.sh 20s -i -t -v "$1/tmp":/usercode virtual_machine /usercode/script.sh in.nim
    """ % currentDir)
  asyncCheck respondOnReady(fv, resp)

routes:
  post "/compile":
    if not request.formData.hasKey("code"):
      resp Http400, "code missing from requests' form data."

    response.data.action = TCActionRaw
    compile(request.formData["code"].body)

runForever()