#include <stdbool.h>
#include <stdio.h>

#include "canvas.h"
#include "runner.h"

static bool canvas_test_0(const char ** scenario)
{
  *scenario = "Creating a canvas";
  struct canvas c = canvas(10, 20);
  bool zeroized = true;
  for (int i = 0; i < c.width * c.height; i++) {
    zeroized &= tuple_equal(c.pixels[i], color(0.0f, 0.0f, 0.0f));
  }
  return
    c.width == 10 &&
    c.height == 20 &&
    zeroized;
}

static bool canvas_test_1(const char ** scenario)
{
  *scenario = "Writing pixels to the screen";
  struct canvas c = canvas(10, 20);
  struct tuple red = color(1.0f, 0.0f, 0.0f);
  canvas_write_pixel(c, 2, 3, red);
  return tuple_equal(canvas_pixel_at(c, 2, 3), red);
}

static bool canvas_test_2(const char ** scenario)
{
  *scenario = "PPM image";

  struct canvas c = canvas(5, 3);
  struct tuple c1 = color(1.5f, 0.0f, 0.0f);
  struct tuple c2 = color(0.0f, 0.5f, 0.0f);
  struct tuple c3 = color(-0.5f, 0.0f, 1.0f);
  canvas_write_pixel(c, 0, 0, c1);
  canvas_write_pixel(c, 2, 1, c2);
  canvas_write_pixel(c, 4, 2, c3);
  canvas_to_ppm(c, "canvas_test_2.ppm");
  return true;
}

test_t canvas_tests[] = {
  canvas_test_0,
  canvas_test_1,
  canvas_test_2,
};

RUNNER(canvas_tests)