public static function createFromRequest(SubmitSolutionRequest $request, Problem $problem, Contest $contest = null)
{
assert(Auth::check());
assert($request->isFileFieldOK('source'));
$source = $request->popSourceInfo();
$verdict = $problem->getSubmissionVerdict($source['content'], $source['ext']);
$data = ['user_id' => Auth::user()->id, 'contest_id' => !is_null($contest) ? $contest->id : null, 'problem_id' => $problem->id, 'source' => $source['content'], 'source_kind' => $source['ext'], 'verdict' => $verdict];
return Submission::create($data);
}
