Resource.hpp

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/*
 * BastionGuard™
 * Copyright (C) 2025–2026 Calogero Scarnà
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * BastionGuard™ is a trademark of Calogero Scarnà.
 * The BastionGuard™ name and branding are not licensed under the GPL.
 */
 
#pragma once
#include <string>
#include <filesystem>
#include <iostream>
#include <cstdlib>
 
#ifndef DATA_DIR
#define DATA_DIR "/usr/share/BastionGuard/data"
#endif
 
inline std::string resource(const std::string& rel) {
    namespace fs = std::filesystem;
 
    if (const char* env = std::getenv("BastionGuard_DATA")) {
        std::string p = std::string(env) + "/" + rel;
        if (fs::exists(p))
            return p;
    }
 
 
    {
        std::string system_path = std::string(DATA_DIR) + "/" + rel;
        if (fs::exists(system_path))
            return system_path;
    }
 
    {
        std::string userBase;
        if (const char* xdg = std::getenv("XDG_DATA_HOME"); xdg && *xdg) {
            userBase = xdg;
        } else if (const char* home = std::getenv("HOME"); home) {
            userBase = std::string(home) + "/.local/share";
        }
 
        if (!userBase.empty()) {
            std::string user_path = userBase + "/BastionGuard/data/" + rel;
            if (fs::exists(user_path))
                return user_path;
        }
    }
 
    std::cerr << "⚠ Risorsa non trovata: " << rel << std::endl;
 
    return std::string(DATA_DIR) + "/" + rel;
}