#include "gpu.h"

#include <assert.h>
#include <math.h>

static const vertex_t vertices[] = {
	{ { -0.5, -0.5 }, { 1.0, 0.0, 0.0 } },
	{ { 0.5, -0.5 }, { 0.0, 1.0, 0.0 } },
	{ { 0.5, 0.5 }, { 0.0, 0.0, 1.0 } },
	{ { -0.5, 0.5 }, { 1.0, 1.0, 1.0 } },
};

static const uint16_t indices[] = { 0, 1, 2, 2, 3, 0 };

static void
key_callback(GLFWwindow *window, int key, int scancode, int action, int mods)
{
	(void)window;
	(void)scancode;
	(void)mods;

	switch (key) {
	case GLFW_KEY_Q:
		if (action == GLFW_PRESS)
			glfwSetWindowShouldClose(window, GL_TRUE);
		break;
	}
}

int main()
{
	// Set up window
	glfwInit();
	glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
	glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
	GLFWwindow *window = glfwCreateWindow(800, 600, "Foo", nullptr, nullptr);
	assert(window);

	// Register input callbacks
	glfwSetKeyCallback(window, key_callback);

	// Initialise GPU
	const gpu_config_t gpu_config = {
		.application_name = "Foo",
		.window = window,
		.vertex_data = vertices,
		.vertex_data_size = sizeof(vertices),
		.index_data = indices,
		.index_data_size = sizeof(indices),
	};
	gpu_ctx_t gpu;
	gpu_init(&gpu, &gpu_config);

	while (!glfwWindowShouldClose(window)) {
		glfwPollEvents();
		gpu_render(&gpu);
	}

	// Clean up
	gpu_cleanup(&gpu);
	glfwDestroyWindow(window);
	glfwTerminate();

	return 0;
}