#include "lopenglprogram.h"
#include "camera.h"
#include <iostream>
void framebuffer_size_callback(GLFWwindow* window, int width, int height) {
    glViewport(0, 0, width, height);
}

void process_input(GLFWwindow* window) {
    if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) {
        glfwSetWindowShouldClose(window, true);
    }
}

std::unique_ptr<LOpenGLProgram> initBackgroundGeometry() {
    auto vshader = std::make_unique<LOpenGLShader>(LOpenGLShader::ShaderType::Vertex);
    auto fshader = std::make_unique<LOpenGLShader>(LOpenGLShader::ShaderType::Fragment);
    vshader->compileShaderFromFile("shader/bg.vert");
    fshader->compileShaderFromFile("shader/bg.frag");
    auto program = std::make_unique<LOpenGLProgram>();
    program->addShader(std::move(vshader));
    program->addShader(std::move(fshader));
    auto ret = program->Link();
    if (!ret)
        return nullptr;
    return program;
}

int main() {
    glfwInit();
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#if __APPLE__
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
#endif

    GLFWwindow* window = glfwCreateWindow(800, 600, "LearnOpenGL", NULL, NULL);
    if (window == NULL) {
        std::cout << "Failed to create GLFW window" << std::endl;
        glfwTerminate();
        return -1;
    }
    glfwMakeContextCurrent(window);
    if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
        std::cout << "Failed to initialize GLAD" << std::endl;
        return -1;
    }

    glViewport(0, 0, 800, 600);
    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);

    initBackgroundGeometry();


    while (!glfwWindowShouldClose(window)) {

    }

    glfwTerminate();
    return 0;
}