#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "options.h"

mazeoptions_t* mazemaker_options_new() {
    mazeoptions_t* result = malloc(sizeof(mazeoptions_t));

    // set defaults
    memset(result->wall_color, 0, 3);
    memset(result->background_color, 0xff, 3);

    return result;
}

void mazemaker_options_free(mazeoptions_t* options) {
    free(options);
}

static int stringToColor(char const* color_desc, rgb_color_t dst) {
    if (color_desc[0] != '#') return -1; // bad format

    size_t l;
    for (l = 1; color_desc[l] != '\0'; l++) if (!isxdigit(color_desc[l])) return -1; // bad format

    if ((l != 4) && (l != 7)) return -1; // bad format

    char x2[3] = { 0, 0, 0};
    if (l == 4) {
        x2[0] = x2[1] = color_desc[1];
        sscanf(x2, "%hhx", &dst[0]);
        x2[0] = x2[1] = color_desc[2];
        sscanf(x2, "%hhx", &dst[1]);
        x2[0] = x2[1] = color_desc[3];
        sscanf(x2, "%hhx", &dst[2]);
    } else {
        strncpy(x2, color_desc + 1, 2);
        sscanf(x2, "%hhx", &dst[0]);
        strncpy(x2, color_desc + 3, 2);
        sscanf(x2, "%hhx", &dst[1]);
        strncpy(x2, color_desc + 5, 2);
        sscanf(x2, "%hhx", &dst[2]);
    }
    return 0;
}

int mazemaker_options_set_wall_color(mazeoptions_t* options, char const* color_desc) {
    return stringToColor(color_desc, options->wall_color);
}

int mazemaker_options_set_background_color(mazeoptions_t* options, char const* color_desc) {
    return stringToColor(color_desc, options->background_color);
}