Resource.hpp

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/*
 * BastionGuard™ Recovery Data
 * Copyright (C) 2025–2026 Calogero Scarnà
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 * 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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.
 */
 
#pragma once
 
#include <cstdlib>
#include <filesystem>
#include <iostream>
#include <string>
 
#ifndef DATA_DIR
#define DATA_DIR "/usr/share/bastionguard-recovery-data/data"
#endif
 
inline std::string resource(const std::string& rel)
{
    namespace fs = std::filesystem;
 
    if (const char* env = std::getenv("BASTIONGUARD_DATA"); env && *env) {
        fs::path p = fs::path(env) / rel;
        if (fs::exists(p)) {
            return p.string();
        }
    }
 
    {
        fs::path system_path = fs::path(DATA_DIR) / rel;
        if (fs::exists(system_path)) {
            return system_path.string();
        }
    }
 
    {
        std::string user_base;
 
        if (const char* xdg = std::getenv("XDG_DATA_HOME"); xdg && *xdg) {
            user_base = xdg;
        } else if (const char* home = std::getenv("HOME"); home && *home) {
            user_base = std::string(home) + "/.local/share";
        }
 
        if (!user_base.empty()) {
            fs::path user_path = fs::path(user_base) / "bastionguard-recovery-data" / "data" / rel;
            if (fs::exists(user_path)) {
                return user_path.string();
            }
        }
    }
 
    {
        fs::path cwd_path = fs::current_path() / rel;
        if (fs::exists(cwd_path)) {
            return cwd_path.string();
        }
    }
 
    {
        fs::path local_data_path = fs::current_path() / "data" / fs::path(rel).filename();
        if (fs::exists(local_data_path)) {
            return local_data_path.string();
        }
    }
 
    std::cerr << "⚠ Risorsa non trovata: " << rel << std::endl;
    return (fs::path(DATA_DIR) / rel).string();
}