#include "question_generator.h"

#include <chrono>
#include <random>

QuestionGenerator::QuestionGenerator() {
  rng_.seed(std::chrono::steady_clock::now().time_since_epoch().count());
}

int QuestionGenerator::GetRandomNumber(int min, int max) {
  std::uniform_int_distribution<int> dist(min, max);
  return dist(rng_);
}

char QuestionGenerator::GetRandomOperator(const std::vector<char>& operators) {
  if (operators.empty()) return '+';
  std::uniform_int_distribution<int> dist(0, operators.size() - 1);
  return operators[dist(rng_)];
}