/* Name: Garrett Haldrup 
# lab12.c
# Purpose: Solves problems assigned in Lab 12

*/

#include <stdio.h>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>

int goodLogin();
int createExpression(char expr[]);

/* add your function declaration here... */
int main() {

  srand((int)time(0));

  char expr[15] = "";
  int try = 0;
  
  printf("\nTest goodInput().....\n");
  //int try = goodLogin();
  if (try == 1) {
    printf("\nTest Good\n");
  } else {
    printf("\nTest Failed\n");
  }
  /* put your test cases here...*/
    
    
    
  printf("\nTest createExpression().....\n");
  /* put your test cases here...*/
  int key = createExpression(expr);
  printf("%s = %d\n", expr, key);
	
    
  return 0;
}

/* add your function definition here... */
int goodLogin() {
  int tries = 5;
  char user[] = "csci218";
  char userEnter[50];
  char pass[] = "grace2023F";
  char passEnter[50];

  printf("Please enter username then password, only 5 attempts\n\n");
  while(1) {
    if (tries < 5) {
      printf("Incorrect username or password\n");
      printf("%d attempts left\n", tries);
    }
    printf("Please enter username: ");
    scanf("%s", userEnter);
    printf("Please enter password: ");
    scanf("%s", passEnter);

    if (!strcmp(user, userEnter) && !strcmp(pass, passEnter)) {
      return 1;
    }
    tries--;
    if (!tries) {
      printf("Login failed, used all atempts\n");
      return -1;
    }
  }
}

int createExpression(char expr[]) {
  char operators[][3] = {"+", "-", "/", "%", ">", "<", "=="};

  int num1 = (rand() % 31) + 20;
  int num2 = (rand() % 31) + 20;

  int indexer = rand() % 7; 
  sprintf(expr, "%d %s %d", num1, operators[indexer], num2);
  
  int sol;

  switch (indexer) {
    case 0:
      sol = num1 + num2;
      break;
    case 1:
      sol = num1 - num2;
      break;
    case 2:
      if (!num2) {
        sol = 999999;
      } else {
        sol = num1 / num2;
      }
      break;
    case 3:
      if (!num2) {
        sol = 999999;
      } else {
        sol = num1 % num2;
      }
      break;
    case 4:
      sol = num1 > num2; 
      break;
    case 5:
      sol = num1 < num2; 
      break;
    case 6:
      sol = num1 == num2; 
      break;
  }

  return sol;

}