#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <wchar.h>

const char* help_text = "\
A dice roller.\
Usage: dice [-options] [rolls] \
where options include:\
    -f          Select items randomly from a file (newline separated)\
";

const char* dice_6_glyph(int x) {
    switch (x) {
    case 1: return "\u2680";
    case 2: return "\u2681";
    case 3: return "\u2682";
    case 4: return "\u2683";
    case 5: return "\u2684";
    case 6: return "\u2685";
    }

    return "?";
}

int dice_rand(int n) {
    return rand() % n;
}

int dice_roll(int min, int max) {
    return dice_rand(max - min) + min;
}

int main(int argc, char const* argv[])
{
    int icon_flag = 0;

    int rolls = 1;
    int min = 1;
    int max = 6;

    int i, j, tmp;

    srand(time(NULL));

    for (i = 1; i < argc; i++) {
        if (strcmp(argv[i], "-h") == 0) {
            printf("%s\n", help_text);
        } else if (strcmp(argv[i], "-d") == 0) {
            icon_flag = 1;
        } else if (strcmp(argv[i], "-D") == 0) {
            icon_flag = 2;
        } else {
            rolls = atoi(argv[i]);
        }
    }

    for (i = 0; i < rolls; i++) {
        tmp = dice_roll(min, max);

        if (icon_flag) {
            printf("%s ", dice_6_glyph(tmp));
            if (icon_flag == 2) {
                printf("\n");
                continue;
            }
        }
        printf("%d\n", tmp);
    }

    return 0;
}