/*
 * Copyright (c) 2018 Amine Ben Hassouna <amine.benhassouna@gmail.com>
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any
 * person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the
 * Software without restriction, including without
 * limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software
 * is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice
 * shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
 * ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
 * SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
 * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */

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

#include <SDL2/SDL.h>

#include "utils.h"

// Define screen dimensions
#define SCREEN_WIDTH    800
#define SCREEN_HEIGHT   600

int main(int argc, char* argv[])
{
    // Initialize SDL
    if(SDL_Init(SDL_INIT_VIDEO) < 0)
    {
        printf("SDL could not be initialized!\n"
               "SDL_Error: %s\n", SDL_GetError());
        return 0;
    }

    // Create window
    SDL_Window *window = SDL_CreateWindow("Basic C SDL game",
                                          SDL_WINDOWPOS_UNDEFINED,
                                          SDL_WINDOWPOS_UNDEFINED,
                                          SCREEN_WIDTH, SCREEN_HEIGHT,
                                          SDL_WINDOW_SHOWN);
    if(!window)
    {
        printf("Window could not be created!\n"
               "SDL_Error: %s\n", SDL_GetError());
    }
    else
    {
        // Create renderer
        SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
        if(!renderer)
        {
            printf("Renderer could not be created!\n"
                   "SDL_Error: %s\n", SDL_GetError());
        }
        else
        {
            // Declare rect of square
            SDL_Rect squareRect;

            // Square dimensions: Half of the min(SCREEN_WIDTH, SCREEN_HEIGHT)
            squareRect.w = MIN(SCREEN_WIDTH, SCREEN_HEIGHT) / 2;
            squareRect.h = MIN(SCREEN_WIDTH, SCREEN_HEIGHT) / 2;

            // Square position: In the middle of the screen
            squareRect.x = SCREEN_WIDTH / 2 - squareRect.w / 2;
            squareRect.y = SCREEN_HEIGHT / 2 - squareRect.h / 2;


            // Event loop exit flag
            bool quit = false;

            // Event loop
            while(!quit)
            {
                SDL_Event e;

                // Wait indefinitely for the next available event
                SDL_WaitEvent(&e);

                // User requests quit
                if(e.type == SDL_QUIT)
                {
                    quit = true;
                }

                // Set backgroud color
                Utils_setBackgroundColor(renderer, COLOR_WHITE);

                // Set renderer color red to draw the square
                SDL_SetRenderDrawColor(renderer, 0xFF, 0x00, 0x00, 0xFF);

                // Draw filled square
                SDL_RenderFillRect(renderer, &squareRect);

                // Update screen
                SDL_RenderPresent(renderer);
            }

            // Destroy renderer
            SDL_DestroyRenderer(renderer);
        }
    }

    // Destroy window
    SDL_DestroyWindow(window);

    // Quit SDL
    SDL_Quit();

    return 0;
}