#define STB_IMAGE_IMPLEMENTATION

#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <stb_image.h>
#include <funcs.h>
#include <shader.h>
#include <NBEngine/Window.h>
#include "Draw.h"

int main() {
    NB::NBWindow myWindow(800, 600, "Howdy Naif!");
    auto window = myWindow.getWindow();

    myWindow.init();
    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);

    NB::Shader myShader("../shaders/vert.vs", "../shaders/frag.fs");
    myShader.use();

    std::vector<NB::VertexAttribute> attrs = {
        {2, GL_FLOAT, false},
        {3, GL_FLOAT, false}
    };
    NB::DrawBuffer myBuffer(attrs, myShader);
    myBuffer.generateElementBuffer({0, 1, 2}, GL_TRIANGLES);
    std::vector<float> data_float = {
        -0.5, -0.5, 1.0, 0.0, 0.0,
         0.5, -0.5, 0.0, 1.0, 0.0,
         0.0,  0.5, 0.0, 0.0, 1.0
    };
    myBuffer.generateVertexBuffer(NB::rawDataVector(data_float));

    //glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
    //glProvokingVertex(GL_FIRST_VERTEX_CONVENTION);
    // Window loop
    GLenum err;
    while(!glfwWindowShouldClose(window)) {
        while(err=glGetError()) {
            std::cout << "[GL ERROR] " << err << "\n";
        }
        // Input checking
        processInput(window);

        // Rendering Loop
        myShader.use();
        glClearColor(0.2f, 0.4f, 0.3f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
        myBuffer.draw();

        // Events and buffer swap
        glfwPollEvents();
        glfwSwapBuffers(window);
    }

    glfwTerminate();

    return 0;
}