#include <NBGraphics/GLLoad.hpp>
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"

#include <NBCore/Errors.hpp>
#include <NBGraphics/Image.hpp>
#include <NBGraphics/ProgramPipeline.hpp>
#include <NBGraphics/VertexArray.hpp>
#include <NBGraphics/Window.hpp>
#include <NBGraphics/Textures.hpp>


int main() {
    LOG("Howdy!");
    nb::Window window(400, 400, "Hello!");
    window.setWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    window.setWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    window.init();

    auto vert = std::make_shared<nb::Shader>(
        GL_VERTEX_SHADER,
        "#version 330 core\n"
        "layout (location = 0) in vec2 aPos;\n"
        "out vec4 vColor;\n"
        "void main()\n"
        "{\n"
        "   gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);\n"
        "   vec2 tmp = (aPos+vec2(1.0, 1.0))*0.5;\n"
        "   vColor = vec4(tmp.x, 0, tmp.y, 1.0);\n"
        "}\0"
    );

    LOG(vert->log());

    auto frag = std::make_shared<nb::Shader>(
        GL_FRAGMENT_SHADER,
        "#version 330 core\n"
        "in vec4 vColor;\n"
        "out vec4 FragColor;\n"
        "void main()\n"
        "{\n"
        "   FragColor = vColor;\n"
        "}\n\0"
    );

    LOG(frag->log());

    nb::ByteVector data = nb::vectorToBytes<float>({
       -0.5, -0.5,
       0, 0.5,
       0.5, -0.5
    });

    nb::Program prog({vert, frag});
    prog.bind();

    std::vector<uint32_t> indxs = {0, 1, 2};

    nb::VertexGroup tri(data, {
        nb::VertexAttribute{
            2,
            GL_FLOAT,
            false,
            {0, 8}
        },
    }, indxs);
    LOG(prog.log());

    GLFWwindow* window_ptr = window.getWindow();
    while(!glfwWindowShouldClose(window_ptr)) {
        OPENGL_CALL(glClearColor(0.2f, 0.3f, 0.3f, 1.0f));
        OPENGL_CALL(glClear(GL_COLOR_BUFFER_BIT));
        tri.draw();
        glfwPollEvents();
        glfwSwapBuffers(window_ptr);
    }    

    return 0;
}