#include "glad/glad.h"
#include <GLFW/glfw3.h>
#define STB_IMAGE_IMPLEMENTATION
#include "glm/glm.hpp"
#include "glm/gtc/matrix_transform.hpp"
#include "glm/gtc/type_ptr.hpp"

#include <iostream>
#include "window.h"
#include "shader.h"
#include "buffer.h"
#include "array.h"
#include "vector2.h"
#include "image.h"

using namespace MyEngine;

void processInput(GLFWwindow* window,float opacity) {

}

int main() {
    Window window;
    window.create("Hello, Triangle!", 700, 700);
    Shader shader("../shaders/shader.vs", "../shaders/shader.fs");
    shader.use();

    float vertices[] {
        -0.5f, 0.5f, 0.0f, 0.0f, 0.0f,
        -0.5f, -0.5f, 0.0f, 0.0f, 1.0f,
        0.5f, -0.5f, 0.0f,  1.0f, 1.0f,
        0.5f, 0.5f, 0.0f, 1.0f, 0.0f
    };

    unsigned int indices[] {
        0, 1, 3,
        1, 2, 3
    };

    TextureCache cache;
    glActiveTexture(GL_TEXTURE0);
    Texture anime(cache.getTexture("../Textures/anime.jpg"));

    glActiveTexture(GL_TEXTURE1);
    Texture wall(cache.getTexture("../Textures/wall.jpg"));

    VertexArray VAO;
    VAO.bind();

    Buffer VBO;
    VBO.load(vertices, GL_STATIC_DRAW);

    ElementBuffer EBO;
    EBO.load(indices, GL_STATIC_DRAW);

    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)0);
    glEnableVertexAttribArray(0);

    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(3*sizeof(float)));
    glEnableVertexAttribArray(1);


    shader.setInt("ourTexture1", 0);
    shader.setInt("ourTexture2", 1);

    shader.setFloat("kek", 0.5f);
    float kek = 0.5f;

    glm::mat4 trans;
    trans = glm::rotate(trans, glm::radians(90.0f), glm::vec3(0.0f, 0.0f, 1.0f));
    trans = glm::scale(trans, glm::vec3(0.5f, 0.5f, 0.5f));

    unsigned int transformLoc = glGetUniformLocation(shader.getID(), "transform");
    glUniformMatrix4fv(transformLoc, 1, GL_FALSE, glm::value_ptr(trans));
    shader.use();

    while(window.isOpen()) {
        window.clear();

        glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);

        if(glfwGetKey(window.getWindowPointer(), GLFW_KEY_UP) == GLFW_PRESS && kek < 1.0) {
            kek += 0.01;
        }
        if(glfwGetKey(window.getWindowPointer(), GLFW_KEY_DOWN) == GLFW_PRESS && kek > 0.0) {
            kek -= 0.01;
        }

        shader.setFloat("kek", kek);
        window.pollEvents();
        window.swapBuffers();
    }

}