#include "log_manager.hpp"

namespace flog
{


    inline std::shared_ptr<LogManager> LogManager::create()
    {
        // ReSharper disable once CppDFAMemoryLeak
        return std::shared_ptr<LogManager>(new LogManager());
    }

    inline LogManager::~LogManager()
    {
        {
            std::lock_guard lock(m_loggersMutex);
            m_loggers.clear();
        }
        {
            std::lock_guard lock(m_logOutputtersMutex);
            m_logOutputters.clear();
        }
    }

    inline LogLevel LogManager::get_min_log_level() const noexcept
    {
        return m_minLogLevel.load(std::memory_order_relaxed);
    }

    inline void LogManager::set_min_log_level(const LogLevel level) noexcept
    {
        m_minLogLevel.store(level, std::memory_order_relaxed);
    }

    inline void LogManager::add_outputter(std::unique_ptr<LogOutputter> outputter)
    {
        std::lock_guard lock(m_logOutputtersMutex);
        m_logOutputters.push_back(std::move(outputter));
    }

    inline std::shared_ptr<Logger> LogManager::get_logger(const std::string& name)
    {
        std::lock_guard lock(m_loggersMutex);
        if (const auto it = m_loggers.find(name); it != m_loggers.end())
        {
            return it->second;
        }

        const auto logger = std::shared_ptr<Logger>(new Logger(name, weak_from_this()));
        m_loggers.emplace(name, logger);
        return logger;
    }

    inline size_t LogManager::clean_unused_loggers()
    {
        std::lock_guard lock(m_loggersMutex);
        size_t count = 0;
        for (auto it = m_loggers.begin(); it != m_loggers.end();)
        {
            if (it->second.use_count() == 1)
            {
                it = m_loggers.erase(it);
                count += 1;
            }
            else
            {
                ++it;
            }
        }
        return count;
    }

    inline void LogManager::print_log(const LogMessage& message) const
    {
        std::shared_lock lock(m_logOutputtersMutex);
        for (auto& outputter : m_logOutputters)
        {
            outputter->write(message);
        }
    }

    inline LoggerCallback::LoggerCallback(const std::weak_ptr<LogManager>& logManager) noexcept : m_logManager(
        logManager)
    {
    }

    inline void LoggerCallback::print_log(const LogMessage& message) const
    {
        if (const auto mgr = m_logManager.lock())
        {
            mgr->print_log(message);
        }
    }

    inline LogLevel LoggerCallback::get_min_log_level() const noexcept
    {
        if (const auto mgr = m_logManager.lock())
        {
            return mgr->get_min_log_level();
        }
        return LogLevel::OFF;
    }
}