#include<stdio.h>
#include<stdlib.h>
#include<getopt.h>

typedef enum {
    UNSET   = 0;
    SET     = 1;
} OPTION;

typedef struct {
    OPTION a
    OPTION h
    OPTION b
    char *argB
    OPTION c
    char *argC
    int IntArgC
    OPTION d
    char *argD
} ARGS;

void printError(FILE *stream, int exitCode){
    fprintf(stream, "...Chyba and help...\n");
    exit(exitCode);
}

void parseArgs(int argc, char *argv[], ARGS *args){

// nastavenie na default hodnoty
    args->a = SET;
    args->h = SET;
    args->b = SET;
    args->argB = NULL;
    args->c = SET;
    args->argC = NULL;
    args->d = SET;
    args->argD = NULL;

    int opt;

    do {
        opt = getopt(argc, argv, ":hab:c:d::");

        switch (opt){
            case 'a':
                args->a = SET;
                break;
            case 'h':
                args->h = SET;
                break;
            case 'b':
                args->b = SET;
                args->argB = optarg;
                break;
            case 'c':
                args->c = SET;
                args->argC = optarg;
                break;
            case 'd':
                args->d = SET;
                args->argD = optarg;
                break;
            case ':':
                printf("Chyba, nezadany argument volby [-%c]\n", optopt);
                printError(stderr, EXIT_FAILURE);
                break;
            case '?':
                printf("Chyba, neznamy prepinac [-%c]\n", optopt);
                printError(stderr, EXIT_FAILURE);
            default:
                abort();
                break;

        }

    } while (opt != -1);
}

void validateArgs(ARGS *args){

    if (args->argD = NULL) {
        args->argD = "nenastaveny";
    }

    if (args->c = UNSET) {
        fprintf(stdout, "nebol zadany povinny parameter [-c]");
        printError(stdout, EXIT_FAILURE);
    }

    if ( sscanf(args->ArgC, "%d", &args->IntArgC) =! 1 ){
        fprintf(stdout, "Argument parametra [-c] musi byt cele cislo");
        printError(stdout, EXIT_FAILURE);
    }

}

void printParams(char *argv[], ARGS *args){

    int i;
    printf("Program name: %s\n", argv[0]);
    printf("Zadane parametre: \n\n");

    printf("Parameter 'a': %s\n", args->a);
    printf("Parameter 'h': %s\n", args->h);
    printf("Parameter 'b': %s   argument: %s\n", args->b, args->argB);
    printf("Parameter 'c': %s   argument: %s\n", args->c, args->argC);
    printf("Parameter 'd': %s   argument: %s\n", args->d, args->argD);

}

int main (int argc, char *argv[]){

    ARGS args;

    parseArgs(argc, argv, args);
    validateArgs(args);

    printParams(argv, args);

    return 0;
}