/*
 * Copyright (c) 2021, Johnny Richard
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <SDL.h>

#include "controller.h"

const int SCREEN_WIDTH  = 640;
const int SCREEN_HEIGHT = 480;

int
main (int   argc,
      char *args[])
{
  SDL_Window*  window        = NULL;
  SDL_Surface* screenSurface = NULL;

  if (SDL_Init(SDL_INIT_VIDEO) < 0) {
    fprintf(stderr, "SDL could not initialize! SDL_Error: %s\n", SDL_GetError());
    return EXIT_FAILURE;
  }

  window = SDL_CreateWindow(
      "SDL Tutorial",
      SDL_WINDOWPOS_UNDEFINED,
      SDL_WINDOWPOS_UNDEFINED,
      SCREEN_WIDTH, SCREEN_HEIGHT,
      SDL_WINDOW_SHOWN
  );

  if (window == NULL) {
    fprintf(stderr, "Window could not be created! SDL_Error: %s\n", SDL_GetError());
    return EXIT_FAILURE;
  }

  SDL_Rect rect = { .x = 0, .y = 0, .w = 20, .h = 20 };

  bool quit = false;
  controller_t controller = {0};

  while (!quit) {
    screenSurface = SDL_GetWindowSurface(window);
    SDL_FillRect(screenSurface, NULL, SDL_MapRGB(screenSurface->format, 0xFF, 0xFF, 0xFF));

    SDL_Event event;
    while (SDL_PollEvent(&event) != 0) {
      if (event.type == SDL_QUIT) {
        quit = true;
      }
      controller_update(&controller, &event);
    }

    if (controller.up)    rect.y -= 1;
    if (controller.down)  rect.y += 1;
    if (controller.left)  rect.x -= 1;
    if (controller.right) rect.x += 1;

    SDL_FillRect(screenSurface, &rect, SDL_MapRGB(screenSurface->format, 0xFF, 0x0, 0x0));
    SDL_UpdateWindowSurface(window);
  }

  SDL_DestroyWindow(window);
  SDL_Quit();
  return EXIT_SUCCESS;
}