/*******************************************************************************
 * Copyright (c) 2026, Jan Koester jan.koester@gmx.net
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 * Neither the name of the <organization> nor the
 *      names of its contributors may be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *******************************************************************************/

#include <chrono>
#include <ctime>
#include <iomanip>
#include <sstream>
#include <iostream>

#include "log.h"

namespace authdb {
    Log g_Log;
}

authdb::Log::Log() {
}

authdb::Log::~Log() {
    if (_access.is_open()) _access.close();
    if (_error.is_open())  _error.close();
}

void authdb::Log::open(const std::string &accessPath, const std::string &errorPath) {
    _access.open(accessPath, std::ios::app);
    if (!_access.is_open()) {
        std::cerr << "warning: could not open access log: " << accessPath << std::endl;
    }
    _error.open(errorPath, std::ios::app);
    if (!_error.is_open()) {
        std::cerr << "warning: could not open error log: " << errorPath << std::endl;
    }
}

std::string authdb::Log::timestamp() {
    auto now = std::chrono::system_clock::now();
    auto t   = std::chrono::system_clock::to_time_t(now);
    struct tm buf;
#ifdef _WIN32
    localtime_s(&buf, &t);
#else
    localtime_r(&t, &buf);
#endif
    std::ostringstream os;
    os << std::put_time(&buf, "%Y-%m-%d %H:%M:%S");
    return os.str();
}

void authdb::Log::access(const std::string &addr, const std::string &method,
                          const std::string &url, int status) {
    std::lock_guard<std::mutex> guard(_accessLock);
    if (_access.is_open()) {
        _access << timestamp() << " " << addr << " " << method
                << " " << url << " " << status << "\n";
        _access.flush();
    }
}

void authdb::Log::error(const std::string &msg) {
    std::lock_guard<std::mutex> guard(_errorLock);
    if (_error.is_open()) {
        _error << timestamp() << " [error] " << msg << "\n";
        _error.flush();
    }
}

void authdb::Log::error(const std::string &addr, const std::string &msg) {
    std::lock_guard<std::mutex> guard(_errorLock);
    if (_error.is_open()) {
        _error << timestamp() << " [error] " << addr << " " << msg << "\n";
        _error.flush();
    }
}
