#include <SDL2/SDL.h>
#include <glm/glm.hpp>

#include "camera.h"
#include "dumbLog.h"
#include "input.h"
#include "entity.h"
#include "renderer.h"
#include "shader_program.h"


void
doFrameCallback(render_state* rs)
{
	static input_state is = {};
	inputProcessEvents(&is);

	if (is.window_closed || is.escape) {
		rs->running = false;
		return;
	}

	int rotate_mod = 0;

	if (is.left)
		rotate_mod = -1;
	if (is.right)
		rotate_mod = 1;

	// NOTE: rotate mesh on z-axis every frame
	entity& e = rs->render_groups[0].entities[0];
	static float angle = (float) M_PI_2 / 33;
	static glm::vec3 axis(0, 0, 1);
	entRotate(e, angle * rotate_mod, axis);
}

// TODO: remove/refactor this when we get animation working
#include "animation_testing.cpp"

int
main()
{
	render_state* rs = renInit("assimp loading");

	if (rs == nullptr) {
		LOG(Error) << "Error Initialzing renderer\n";
		return 1;
	}

	// TODO: this needs to be more convenient
	shader_wrapper sw = { DEFAULT_SHADER, rs->default_shader, nullptr };
	rs->render_groups = renAllocateGroup(1, sw);
	rs->render_group_count = 1;
	entity& spaceship = rs->render_groups->entities[0];

	cameraInitPerspective(
		rs->cam,
		glm::vec3(200, -150, 150),
		glm::vec3(0, 0, 0),
		glm::vec3(0,0,1)
	);

	renAddLight(rs, glm::vec3(200, -150, 150));

	// TODO: look into setting up git-annex for large files. git-lfs works fine
	// 	for gitlab, but has no real implementation for self-hosting:
	// 		https://github.com/git-lfs/git-lfs/issues/1044
	// 		https://git-annex.branchable.com/
	//
	// NOTE: testing assimp animation info
	logDebugAnimationInfo("../data/spaceship.glb");

	if (entInitModel(spaceship, "../data/spaceship.glb")) {
		entScale(spaceship, glm::vec3(20, 20, 20));
		renDoRenderLoop(rs, 60, doFrameCallback);
	} else {
		LOG(Error) << "Error initializing entity, exiting\n";
	}

	renShutdown(rs);
	return 0;
}