#include "aliases.h"
#include <SDL2/SDL.h>
#include <SDL2/SDL_events.h>
#include <SDL2/SDL_image.h>
#include <SDL2/SDL_rect.h>
#include <SDL2/SDL_render.h>
#include <SDL2/SDL_rwops.h>
#include <SDL2/SDL_video.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>

#define WINDOW_WIDTH 800
#define WINDOW_HEIGHT 600

#define IMAGE_WIDTH 300
#define IMAGE_HEIGHT 300

typedef struct {
  u64 size;
  u8 *buf;
} img_t;

img_t load_image(const char *filepath);
SDL_Texture *load_texture(SDL_Renderer *renderer, const char *filepath);

int main(void) {
  SDL_Init(SDL_INIT_EVERYTHING);
  IMG_Init(IMG_INIT_PNG);

  SDL_Window *window =
      SDL_CreateWindow("Window", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
                       WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_SHOWN);

  SDL_Renderer *renderer = SDL_CreateRenderer(
      window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);

  bool running = true;

  SDL_Event event = {0};

  SDL_Texture *texture1 = IMG_LoadTexture(renderer, "ball.png");
  SDL_Texture *texture2 = load_texture(renderer, "ball.png");

  SDL_Rect dest1 = {
      .x = 50,
      .y = 150,
      .w = IMAGE_WIDTH,
      .h = IMAGE_HEIGHT,
  };
  SDL_Rect dest2 = {
      .x = 450,
      .y = 150,
      .w = IMAGE_WIDTH,
      .h = IMAGE_HEIGHT,
  };

  while (running) {
    while (SDL_PollEvent(&event)) {
      switch (event.type) {
      case SDL_QUIT:
        running = false;
        break;
      }
    }

    SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);

    SDL_RenderClear(renderer);

    SDL_RenderCopy(renderer, texture1, NULL, &dest1);
    SDL_RenderCopy(renderer, texture2, NULL, &dest2);

    SDL_RenderPresent(renderer);
  }

  SDL_DestroyRenderer(renderer);

  SDL_DestroyWindow(window);

  IMG_Quit();
  SDL_Quit();

  return 0;
}

img_t load_image(const char *filepath) {
  FILE *fp = fopen(filepath, "rb");
  if (!fp) {
    return (img_t){0};
  }

  img_t img = {0};

  fseek(fp, 0, SEEK_END);

  img.size = ftell(fp);

  fseek(fp, 0, SEEK_SET);

  img.buf = (u8 *)malloc(img.size);

  fread((void *)(img.buf), img.size, 1, fp);

  fclose(fp);

  return img;
}

SDL_Texture *load_texture(SDL_Renderer *renderer, const char *filepath) {
  img_t img = load_image("ball.png");
  if (!(img.buf)) {
    return NULL;
  }

  SDL_RWops *ctx = SDL_RWFromMem(img.buf, img.size);
  SDL_Texture *texture = IMG_LoadTexture_RW(renderer, ctx, 1);

  free(img.buf);

  return texture;
}