//
// Created by bruno on 11.6.2025.
//

#include "gamestate.h"

GameState gameState;

char *autosaveName = "autosave.dat";

int loadGameState(char *filename, Player *plr) {
    fflush(stdout);
    FILE *gameSave = fopen(filename, "rb");
    if (gameSave) {
        fseek(gameSave, 0L, SEEK_END);
        long sz = ftell(gameSave);
        if (sz != sizeof(gameState)) {
            return 1;
        }
        rewind(gameSave);
        fread(&gameState, sizeof(gameState), 1, gameSave);
        fclose(gameSave);
        memcpy(plr, &gameState.player, sizeof(gameState.player));
        memcpy(tileMap, gameState.tileMap, sizeof(tileMap));
        memcpy(backgroundMap, gameState.backgroundTileMap, sizeof(backgroundMap));
        SDL_Rect *tmp = audioData.playerRect;
        memcpy(&audioData, &gameState.audioData, sizeof(gameState.audioData));
        audioData.playerRect = tmp;
        audioData.totalSamples = 0;
        memcpy(&neededUpdates, &gameState.neededUpdates, sizeof(gameState.neededUpdates));
        memcpy(&entities, &gameState.entities, sizeof(gameState.entities));
        openCount = gameState.openCount;
        memcpy(&openList, &gameState.openList, sizeof(gameState.openList));
        memcpy(&enemySpawn, &gameState.enemySpawn, sizeof(gameState.enemySpawn));
        plr->cursor.targetTile = NULL;
        plr->cursor.prevTargetTile = NULL;
        return 0;
    }
    return 1;
}

void saveGameState(char *filename, Player *plr) {
    memcpy(&gameState.player, plr, sizeof(gameState.player));
    memcpy(gameState.tileMap, tileMap, sizeof(gameState.tileMap));
    memcpy(gameState.backgroundTileMap, backgroundMap, sizeof(gameState.backgroundTileMap));
    memcpy(&gameState.audioData, &audioData, sizeof(gameState.audioData));
    memcpy(&gameState.neededUpdates, &neededUpdates, sizeof(neededUpdates));
    memcpy(&gameState.entities, &entities, sizeof(entities));
    memcpy(&gameState.openList, &openList, sizeof(openList));
    memcpy(&gameState.enemySpawn, &enemySpawn, sizeof(enemySpawn));
    gameState.openCount = openCount;

    FILE *gameSave = fopen(filename, "wb");
    if (!gameSave) {
        perror("Failed to open file for saving");
        return;
    }

    fwrite(&gameState, sizeof(gameState), 1, gameSave);
    fclose(gameSave);
}