#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <stdbool.h>
#include <math.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <SDL2/SDL_ttf.h>

#include "breakout.h"
#include "vector.h"
#include "background.h"

#define BG_Path_1 "assets/images/bg/bg1.png"
#define BG_Path_2 "assets/images/bg/bg2.png"
#define BG_Path_3 "assets/images/bg/bg3.png"
#define BG_Path_4 "assets/images/bg/bg4.png"

int BACKGROUND_BoxWidth, BACKGROUND_BoxHeight;
int BACKGROUND_TextureCount;
SDL_Texture ** BACKGROUND_Textures;
bool BACKGROUND_IsInit = false;
SDL_Rect BACKGROUND_TotalRect;

void BACKGROUND_Initialize(SDL_Renderer * renderer, int width, int height){
    if (!BACKGROUND_IsInit) {
        printf("Initializing Background...\n");
        BACKGROUND_BoxWidth = width;
        BACKGROUND_BoxHeight = height;
        BACKGROUND_TextureCount = 4;
        BACKGROUND_TotalRect = (SDL_Rect) {.x = 0, .y = 0, .w = 1920, .h = 1080 };
        BACKGROUND_Textures = malloc(BACKGROUND_TextureCount * sizeof(SDL_Texture *));
        BACKGROUND_Textures[0] = IMG_LoadTexture(renderer, BG_Path_1);
        BACKGROUND_Textures[1] = IMG_LoadTexture(renderer, BG_Path_2);
        BACKGROUND_Textures[2] = IMG_LoadTexture(renderer, BG_Path_3);
        BACKGROUND_Textures[3] = IMG_LoadTexture(renderer, BG_Path_4);
        printf("Background initialized!\n");
        BACKGROUND_IsInit = true;
    } else
        printf("Background already initialized!\n");
}

void BACKGROUND_Draw(SDL_Renderer * renderer, int index){
    if (index < 0 || index >= BACKGROUND_TextureCount) {
        printf("Bad Background Texture index: %d by max: %d\n", index, BACKGROUND_TextureCount);
        return;
    }
    SDL_RenderCopy(renderer, BACKGROUND_Textures[index], &BACKGROUND_TotalRect, &BACKGROUND_TotalRect);
}

void BACKGROUND_Deinitialize(){
    if (BACKGROUND_IsInit) {
        printf("De-initializing Background...\n");
        for (int i = 0; i < BACKGROUND_TextureCount; i++) {
            SDL_DestroyTexture(BACKGROUND_Textures[0]);
        }
        free(BACKGROUND_Textures);
        printf("Background de-initialized!\n");
        BACKGROUND_IsInit = false;
    } else
        printf("Background already de-initialized!\n");
}