/*  This file is part of libravatarserv.
 *  Copyright © 2018, 2020 tastytea <tastytea@tastytea.de>
 *
 *  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 <http://www.gnu.org/licenses/>.
 */

#include "libravatarserv.hpp"

#include <basedir.h>
#include <cstdlib>

using namespace libravatarserv;
using namespace libravatarserv::settings;

bool settings::find_avatar_dir()
{
    const char *envdir = std::getenv("LIBRAVATARSERV_DIR");
    if (envdir == nullptr)
    {
        // TODO: Remove AVATAR_DIR in 1.0.0
        // DEPRECATED because it is potentially used by another program
        envdir = std::getenv("AVATAR_DIR");
    }
    if (envdir != nullptr && fs::is_directory(envdir))
    {
        avatar_dir = envdir;
    }
    else
    {
        xdgHandle xdg;
        xdgInitHandle(&xdg);
        auto data_dirs = xdgDataDirectories(&xdg);
        const uint8_t size = sizeof(data_dirs) / sizeof(*data_dirs);

        for (uint8_t index = 0; index <= size; ++index)
        {
            const string searchdir =
                data_dirs[index] + string("/libravatarserv");
            if (fs::is_directory(searchdir))
            {
                avatar_dir = searchdir;
                break;
            }
        }
        xdgWipeHandle(&xdg);
        if (avatar_dir.empty())
        {
            return false;
        }
    }

    return true;
}

void settings::read_settings()
{
    const char *env = std::getenv("LIBRAVATARSERV_DEFAULT_FALLBACK");
    if (env != nullptr)
    {
        settings.default_fallback = env;
    }

    env = std::getenv("LIBRAVATARSERV_REDIRECT_NOFALLBACK");
    if (env != nullptr && env[0] == '1')
    {
        settings.redirect_nofallback = true;
    }

    env = std::getenv("LIBRAVATARSERV_REDIRECT_NOUSER");
    if (env != nullptr && env[0] == '1')
    {
        settings.redirect_nouser = true;
    }
}