//
// Created by bruno on 27.10.2023.
//

#include "Game.h"
#include <SDL.h>
#include <SDL_image.h>

int Game::logicalWidth = 160;
int Game::logicalHeight = 100;
int Game::renderWidth = 1280;
int Game::renderHeight = 800;

bool Game::isRunning = true;

SDL_Event Game::event;
SDL_Window* Game::window;
SDL_Renderer* Game::renderer;
SDL_Surface* Game::windowSurface;
SDL_Rect* Game::windowRect;

Game::Game(){
    windowRect = new SDL_Rect;
}

Game::~Game(){
    delete windowRect; // Deallocate memory
}

int Game::init(){
    // Initialize SDL
    if (SDL_Init(SDL_INIT_VIDEO) != 0) {
        SDL_Log("Unable to initialize SDL: %s", SDL_GetError());
        return 1;
    }
    windowRect->w = logicalWidth;
    windowRect->h = logicalHeight;

    // Create the SDL window and renderer
    window = SDL_CreateWindow("Pixel Art Game", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, renderWidth, renderHeight, SDL_WINDOW_RESIZABLE);
    if (!window) {
        SDL_Log("Unable to create window: %s", SDL_GetError());
        return 1;
    }

    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
    if (!renderer) {
        SDL_Log("Unable to create renderer: %s", SDL_GetError());
        return 1;
    }

    windowSurface = SDL_GetWindowSurface( window );
    if (!windowSurface) {
        SDL_Log("Unable to create window surface: %s", SDL_GetError());
        return 1;
    }

    //Initialize PNG loading
    int imgFlags = IMG_INIT_PNG;
    if( !( IMG_Init( imgFlags ) & imgFlags ) )
    {
        printf( "SDL_image could not initialize! SDL_image Error: %s\n", IMG_GetError() );
        return 1;
    }

    // Set the logical scaling
    SDL_RenderSetLogicalSize(renderer, logicalWidth, logicalHeight);

    //create players

    for(int i = 0; i < playerCount; i++){
        Player temp_player = Player(0, 0, new Sprite("assets/a.png", renderer, windowRect), 20, windowRect);
        players.push_back(temp_player);
    }

    return 0;
}

int Game::processInput(){
    event;
    return 0;
}

int Game::render(){
    // Render the checkerboard pattern
    for (int x = 0; x < logicalWidth; x++) {
        for (int y = 0; y < logicalHeight; y++) {
            if ((x + y) % 2 == 0) {
                SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255); // Black
            } else {
                SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255); // White
            }
            SDL_RenderDrawPoint(renderer, x, y);
        }
    }
    for(int i = 0; i < playerCount; i++){
        players[i].render(renderer);
    }
    return 0;
}

int Game::update(){

    while (SDL_PollEvent(&event)) {
        if (event.type == SDL_QUIT) {
            isRunning = false;
        }
        else if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED) {
            renderWidth = event.window.data1;
            renderHeight = event.window.data2;
            SDL_RenderSetLogicalSize(renderer, logicalWidth, logicalHeight);
        }
        else if (event.type == SDL_KEYDOWN || event.type == SDL_KEYUP){
            processInput();
        }
    }

    // Clear the renderer
    SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
    SDL_RenderClear(renderer);

    // Your game rendering code goes here, using the logical resolution

    this->render();

    // Present the renderer
    SDL_RenderPresent(renderer);

    return 0;
}

int Game::quit(){
    // Cleanup and exit
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
}

int Game::run(){
    int initStatus = this->init();
    if(initStatus != 0){
        return initStatus;
    }

    while (isRunning) {
        int updateStatus = this->update();
        if(updateStatus != 0){
            return updateStatus;
        }
    }

    int quitStatus = this->quit();
    if(quitStatus != 0){
        return quitStatus;
    }
    return 0;
}