/* #############################################################################
 *   # DiceRoller
 *   This Program will alow you to role a dice or die using the scmatics such 
 *   as 1d6, 5d20, 1d100, d20
 *
 *   AUTHER: PreacherDHM
 *   DATE: 06/02/25
 * #############################################################################
 */


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

/* GetDice(char* format)
 *
 * This will return the value of the rolled dice.
 */
int GetDice(const char* format) {
    int size = strlen(format);
    int seperator = 0;
    int resolt = 0;
    unsigned int seed = time(0);
    char c_amount[30] = { '\0' };
    char c_dice[30] = { '\0' };

    for(int i = 0; i < size; i++) {
        if(format[i] != 'd')
            continue;
        seperator = i;
        break;
    }
    if(seperator == 0)
        return -1;

    strncpy(c_amount, format,seperator);
    strcpy(c_dice, &format[seperator + 1]);

    int amount = atoi(c_amount);
    int dice = atoi(c_dice);
    int r = 0;
    for (int i = 0; i < amount; i++) {
        r = rand_r(&seed) % (dice - 1 + 1) + 1;
        resolt += r;
    }

    return resolt;
}

int main (int argc, char *argv[]) {
    int roled;
    for(int i = 1; i < argc; i++) {
        roled = GetDice(argv[i]);
        if(roled <= 0) {
            printf("FORMAT ERROR\n"); return -1;
        }
        printf("%s: Roled a %d\n",argv[i], GetDice(argv[i]));
    }
    return 0;
}