// "Copyright [2023] <Krzysztof Rudnicki>"
#ifndef ENGINE_ENGINE_DRAW_HPP_
#define ENGINE_ENGINE_DRAW_HPP_
#include <glad/glad.h>
#include <GLFW/glfw3.h>

#include <string>

#include "./constants.hpp"

struct offsetsStruct {
  offsetsStruct() : xOffset(0), yOffset(0), zOffset(0) {}
  float xOffset, yOffset, zOffset;
};

struct drawFigureReturn {
  drawFigureReturn() : success(-1), VAO(0), VBO(0), EBO(0) {}
  int success;
  unsigned int VAO;
  unsigned int VBO;
  unsigned int EBO;
};

drawFigureReturn drawFigure(const int whatToDraw);

drawFigureReturn drawSquare(
    const float squareVertices[] = constants::SQUARE_VERTICES,
    const size_t squareVerticesSize = constants::SQUARE_VERTICES_SIZE,
    const unsigned int squareIndices[] = constants::SQUARE_INDICES,
    const size_t squareIndicesSize = constants::SQUARE_INDICES_SIZE,
    const char* vertexShaderSource = constants::VERTEX_SHADER_SOURCE,
    const char* fragmentShaderSource = constants::FRAGMENT_SHADER_SOURCE,
    const bool colorIncluded = false, const bool textureIncluded = false,
    const offsetsStruct offsets = offsetsStruct());

void doDrawElements(const unsigned int shaderProgram,
                    const unsigned int vertexArrayObject,
                    const GLenum drawArrayMode, const GLenum drawType,
                    const int numberOfElementsToDraw);

drawFigureReturn drawTriangleClass(
    const char* vertexPath, const char* fragmentPath,
    const float triangleVertices[], const size_t triangleVerticesSize,
    const bool colorIncluded = false, const bool textureIncluded = false,
    const offsetsStruct offsets = offsetsStruct());

void updateUniformColor(const unsigned int shaderProgram,
                        const GLchar* uniformName);

void doDrawArrays(const unsigned int shaderProgram,
                  const unsigned int vertexArrayObject,
                  const GLenum drawArrayMode, const int firstIndex,
                  const unsigned int numberOfIndicesToBeRendered);

drawFigureReturn drawDebilMode(
    const char* vertexPath = constants::VERTEX_SHADER_SOURCE_FILENAME,
    const char* fragmentPath = constants::FRAGMENT_SHADER_SOURCE_FILENAME,
    const float vertices[] = constants::TRIANGLE_VERTICES,
    const size_t verticesSize = constants::TRIANGLE_VERTICES_SIZE,
    const unsigned int indices[] = constants::TEXTURE_INDICES,
    const size_t indicesSize = constants::TEXTURE_INDICES_SIZE);

#endif  // ENGINE_ENGINE_DRAW_HPP_