#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int size=50;
// Returns random number 1 to 49
int
ball (void)
{
  return 1 + rand () % 49;
}

// show a ball in svg
void
showball (int pos, int num)
{
  char *col;
  if (num < 10)
    col = "white";
  else if (num < 20)
    col = "blue";
  else if (num < 30)
    col = "red";
  else if (num < 40)
    col = "green";
  else
    col = "yellow";
  printf ("<circle cx=\"%d\" cy=\"%d\" r=\"%d\" fill=\"url(#%s)\" />\n",
	  size + pos * 2 * size, size, size * 9 / 10, col);
  printf
    ("<text x=\"%d\" y=\"%d\" font-size=\"%d\" text-anchor=\"middle\">%02d</text>\n",
     size + pos * 2 * size, size * 135 / 100, size, num);
}

void
makegradient (char *col, char *col1, char *col2)
{
  printf
    ("<radialGradient id=\"%s\" gradientUnits=\"objectBoundingBox\" fx=\"25%%\" fy=\"25%%\">\n"
     "<stop offset=\"0%%\" stop-color=\"%s\" /><stop offset=\"100%%\" stop-color=\"%s\" />\n"
     "</radialGradient>\n", col, col1, col2);
}

int
main (int argc, const char *argv[])
{
  char c;
  int b1, b2, b3, b4, b5, b6, b7;
  poptContext optCon;
  struct poptOption optionsTable[] = {
    {"ball-size", 'b', POPT_ARG_INT, &size, 0, "Ball Size", "pixels"},
    POPT_AUTOHELP {NULL, 0, 0, NULL, 0}
  };
  optCon = poptGetContext (NULL, argc, argv, optionsTable, 0);
  if ((c = poptGetNextOpt (optCon)) < -1)
    {
      fprintf (stderr, "%s: %s\n",
	       poptBadOption (optCon, POPT_BADOPTION_NOALIAS),
	       poptStrerror (c));
      return 1;
    }
  if (poptPeekArg (optCon))
    {
      poptPrintUsage (optCon, stderr, 0);
      return 1;
    }
  srand (time (0));
  b1 = ball ();
  do
    b2 = ball ();
  while (b2 == b1);
  do
    b3 = ball ();
  while (b3 == b2 || b3 == b1);
  do
    b4 = ball ();
  while (b4 == b3 || b4 == b2 || b4 == b1);
  do
    b5 = ball ();
  while (b5 == b4 || b5 == b3 || b5 == b2 || b5 == b1);
  do
    b6 = ball ();
  while (b6 == b5 || b6 == b4 || b6 == b3 || b6 == b2 || b6 == b1);
  do
    b7 = ball ();
  while (b7 == b6 || b7 == b5 || b7 == b4 || b7 == b3 || b7 == b2
	 || b7 == b1);
  printf ("Content-Type: image/svg+xml\n\n");
  printf ("<?xml version=\"1.0\" standalone=\"no\"?>\n"
	  "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n"
	  "<svg width=\"100%%\" height=\"100%%\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n"
	  "<defs>\n");
  makegradient ("white", "white", "#CCCCCC");
  makegradient ("red", "white", "red");
  makegradient ("blue", "white", "blue");
  makegradient ("green", "white", "green");
  makegradient ("yellow", "white", "yellow");
  printf ("</defs>\n");
  showball (0, b1);
  showball (1, b2);
  showball (2, b3);
  showball (3, b4);
  showball (4, b5);
  showball (5, b6);
  showball (7, b7);
  printf ("</svg>\n");
  return 0;
}