#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <math.h>

#include <sys/time.h>

#include <cairo-svg.h>

#include <hexagram/path.h>

static char *path_data =
    "M 23.246093  0,"
    "   0        13.382812,"
    "V 44.689453"
    "L  0.0839844 44.640625,"
    "  24.033203  58.505859,"
    "  24.001953  86.332031,"
    "  22.841796  87"
    "h  4.478516"
    "L 26.068359  86.275391,"
    "  26.099609  58.449219,"
    "  50.083984  44.640625,"
    "  74.033203  58.505859,"
    "  74.001953  86.332031,"
    "  72.841796  87"
    "h  4.478516"
    "L 76.068359  86.275391,"
    "  76.099609  58.449219,"
    " 100         44.689453,"
    "V 13.365234"
    "L 76.919921   0"
    "H 73.246093"
    "L 50.015625  13.373047,"
    "  26.919921   0"
    "Z"
    "M 25.083984   1.25,"
    "  49.033203  15.115234,"
    "  49.001953, 42.941406,"
    "  25.017578  56.75,"
    "   1.0019531 42.845703,"
    "l  0.033203 -27.75"
    "z"
    "m 50          0,"
    "  24.017576  13.904297,"
    "  -0.0352    27.75"
    "L 75.017578  56.75,"
    "  51.068359  42.884766,"
    "  51.099609  15.058594"
    "Z";

static int usage(int argc, char **argv, const char *message, ...) {
    if (message) {
        va_list args;

        va_start(args, message);
        vfprintf(stderr, message, args);
         fprintf(stderr, "\n");
        va_end(args);
    }

    fprintf(stderr, "usage: %s output.svg\n", argv[0]);

    return 1;
}

int main(int argc, char **argv) {
    int width  = 1280,
        height =  480;

    cairo_surface_t *surface;

    cairo_t *bg;

    if (argc != 2) {
        return usage(argc, argv, "No output SVG file specified");
    }

    surface = cairo_svg_surface_create(argv[1], width, height);

    /*
     * Set up the rendering surfaces
     */
    bg = cairo_create(surface);

    /*
     * Draw the background layer
     */
    if (hexagram_path_run(bg, path_data, strlen(path_data)) < 0) {
        printf("Oh noes!\n");
        goto error_path_run;
    }

    cairo_stroke(bg);

    cairo_destroy(bg);

    cairo_surface_destroy(surface);

    return 0;

error_path_run:
    return -1;
}