#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <time.h>
#include <math.h>

// Operator Ranomization Information
char const *operators[] = {"addition",
                           "subtraction",
                           "multiplication",
                           "division"};
int o_lower = 0, o_upper = 3;
char const *chosen_operator;
int chosen_operator_number;

// Setting up #s for equations
int number1;
int number2;
int n_lower = 0, n_upper = 1000;

// Setting up user awnser
int user_awnser;
float real_awnser;

// Starting # of lives
int lives = 5;

// Starting # of score
int score = 0;

// Pre-calling functions
void operator_setup(int o_lower, int o_upper);
void number_setup(int n_lower, int n_upper);
void equation_setup();
void user_input();
void awnser_check();
void log_game();

// Main funciton
int main(int argc, char **argv)
{
  printf("Welcome to MathGame V0.1 \nBy: Maksim\n");
  printf("All number should be rounded to the nearest whole number.\n");
  printf("Press 'Enter' to begin.\n");
  while(getchar() != '\n');
  while (lives != 0)
  {
    operator_setup(o_lower, o_upper);
    number_setup(n_lower, n_upper);
    equation_setup();
    user_input();
    awnser_check();
  }
  printf("Game Over\nScore: %i\n", score);
  log_game();
}

// Randomizing operator
void operator_setup(int o_lower, int o_upper)
{
  srand(time(NULL));
  int o_ran = (rand() % (o_upper - o_lower)) + o_lower;
  chosen_operator = operators[o_ran];
}

// Randomizing Numbers
void number_setup(int n_lower, int n_upper)
{
  srand(time(NULL) / 1.0415);
  number1 = (rand() % (n_upper - n_lower)) + n_lower;

  srand(time(NULL) / 9.4281);
  number2 = (rand() % (n_upper - n_lower)) + n_lower;
}

// Creating equation and awnsering it
void equation_setup()
{
  if (chosen_operator == operators[0])
  {
    printf("%i + %i = ", number1, number2);
    chosen_operator_number = 0;
    real_awnser = number1 + number2;
  }
  if (chosen_operator == operators[1])
  {
    printf("%i - %i = ", number1, number2);
    chosen_operator_number = 1;
    real_awnser = number1 - number2;
  }
  if (chosen_operator == operators[2])
  {
    printf("%i * %i = ", number1, number2);
    chosen_operator_number = 2;
    real_awnser = number1 * number2;
  }
  if (chosen_operator == operators[3])
  {
    printf("%i / %i = ", number1, number2);
    chosen_operator_number = 3;
    real_awnser = number1 / number2;
  }
}

void user_input()
{
  scanf("%i", &user_awnser);
}

void awnser_check()
{
  real_awnser = roundf(real_awnser);
  if (user_awnser == real_awnser)
  {
    score++;
    printf("Corrent!\nLives: %i Score: %i\n\n", lives, score);
  }
  if (user_awnser != real_awnser)
  {
    lives = lives -1;
    printf("Not corrent.\nLives: %i Score: %i\n\n", lives, score);
  }
}

void log_game()
{
  time_t t;
  time(&t);
  FILE *file;
  file = fopen("score.log", "a+");
  fprintf(file, "Score: %i Game ended at: %s", score, ctime(&t));
  fclose(file);
}