#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
#include <stdio.h>
#include <vector>
#include <math.h>

#include "controller.hpp"
#include "renderer.hpp"

#define WINDOW_WIDTH 640
#define WINDOW_HEIGHT 480

#define RUSTY_METAL_TEXTURE "assets/textures/rusty_metal.jpg"

std::vector<float> verts({
	-0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f,
	 0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,
	 0.5f,  0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,

	 0.5f,  0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
	-0.5f,  0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f,
	-0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f,


	-0.5f, -0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f,
	 0.5f, -0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,
	 0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,

	 0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
	-0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f,
	-0.5f, -0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f,


	-0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,
	-0.5f,  0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
	-0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f,

	-0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f,
	-0.5f, -0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f,
	-0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,


	 0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,
	 0.5f,  0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
	 0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f,

	 0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f,
	 0.5f, -0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f,
	 0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,


	-0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f,
	 0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
	 0.5f, -0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,

	 0.5f, -0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,
	-0.5f, -0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f,
	-0.5f, -0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f,


	-0.5f,  0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f,
	 0.5f,  0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
	 0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,

	 0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f,
	-0.5f,  0.5f,  0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f,
	-0.5f,  0.5f, -0.5f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f
});
// Vert struc: x y z  r g b  tx ty

std::vector<unsigned int> indices({  
	0, 1, 3, 
	1, 2, 3,
	5, 6, 7, 
	7, 8, 9, 
	9, 10, 11, 
	11, 12, 13,
	0, 1, 3, 
	3, 4, 5, 
	5, 6, 7, 
	7, 8, 9, 
	9, 10, 11, 
	11, 12, 13,
	0, 1, 3, 
	3, 4, 5, 
	5, 6, 7, 
	7, 8, 9, 
	9, 10, 11, 
	11, 12, 13,
	0, 1, 3, 
	3, 4, 5, 
	5, 6, 7, 
	7, 8, 9, 
	9, 10, 11, 
	11, 12, 13,
	0, 1, 3, 
	3, 4, 5, 
	5, 6, 7, 
	7, 8, 9, 
	9, 10, 11, 
	11, 12, 13,
});

void framebuffer_size_callback(GLFWwindow* win, int w, int h) {
	glViewport(0, 0, w, h);
}

void mouse_callback(GLFWwindow* win, double x, double y) {}

void processInput(GLFWwindow *win) {
	int action = glfwGetKey(win, GLFW_KEY_ESCAPE);
	if (action == GLFW_PRESS) {
		glfwSetWindowShouldClose(win, true);
	}
}

int main() {
	glfwInit(); glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

	GLFWwindow* win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Hohmann", NULL, NULL);
	if (win == NULL) {
		printf("Failed to create a window.\n");
		glfwTerminate();
		return 1;
	}

	glfwMakeContextCurrent(win);

	if ( !gladLoadGLLoader((GLADloadproc)glfwGetProcAddress) ) {
		printf("Failed to init GLAD.\n");
		return 1;
	}

	glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
	glfwSetFramebufferSizeCallback(win, framebuffer_size_callback); // Framebuffer

	glEnable(GL_DEPTH_TEST);  

	// Input
	glfwSetInputMode(win, GLFW_CURSOR, GLFW_CURSOR_DISABLED); // Disable cursor
	glfwSetCursorPosCallback(win, mouse_callback); // Mouse capture callback

	float borderColor[] = {1.0f, 1.0f, 1.0f, 1.0f};
	glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, borderColor);

	// Create scene
	Renderer::Scene scene(win);

	Renderer::TexturedObject ro(verts, indices);
	// ro.setPosition(glm::vec3(0.2f, -1.0f, -8.0f));

	Renderer::TexturedObject ro2(verts, indices);
	// ro2.setPosition(glm::vec3(0.5f, 0.0, -8.0f));

	ro2.setTexture("assets/textures/meep.jpg"); // TODO: fix texture bug
	ro.setTexture(RUSTY_METAL_TEXTURE);

	scene.spawnObject(&ro);
	scene.spawnObject(&ro2);

	// Controller test
	Controller player(win, glm::vec3(0.0f, 0.0f, -8.0f));
	scene.setCamera(&player);

	while (!glfwWindowShouldClose(win)) {
		// Handle input
		player.processInput(scene.deltaTime);
		processInput(win);

		ro.translate(glm::vec3(0.0f, 0.0f, 0.001f));
		// ro2.setPosition(glm::vec3(0.0f, 0.0f, -1000.0f));

		// Render new frame
		scene.render();

		// glfw
		glfwSwapBuffers(win);
		glfwPollEvents();
	}

	glfwTerminate();
	return 0;
}