// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.

// Distributed under the MIT License (http://opensource.org/licenses/MIT)

#pragma once

#ifndef SPDLOG_HEADER_ONLY

    #include <spdlog/details/registry.h>

#endif

#include <spdlog/common.h>

#include <spdlog/details/periodic_worker.h>

#include <spdlog/logger.h>

#include <spdlog/pattern_formatter.h>

#ifndef SPDLOG_DISABLE_DEFAULT_LOGGER

    // support for the default stdout color logger

    #ifdef _WIN32

        #include <spdlog/sinks/wincolor_sink.h>

    #else

        #include <spdlog/sinks/ansicolor_sink.h>

    #endif

#endif  // SPDLOG_DISABLE_DEFAULT_LOGGER

#include <chrono>

#include <functional>

#include <memory>

#include <string>

#include <unordered_map>

namespace spdlog {

namespace details {

SPDLOG_INLINE registry::registry()

    : formatter_(new pattern_formatter()) {

#ifndef SPDLOG_DISABLE_DEFAULT_LOGGER

    // create default logger (ansicolor_stdout_sink_mt or wincolor_stdout_sink_mt in windows).

    #ifdef _WIN32

    auto color_sink = std::make_shared<sinks::wincolor_stdout_sink_mt>();

    #else

    auto color_sink = std::make_shared<sinks::ansicolor_stdout_sink_mt>();

    #endif

    const char *default_logger_name = "";

    default_logger_ = std::make_shared<spdlog::logger>(default_logger_name, std::move(color_sink));

    loggers_[default_logger_name] = default_logger_;

#endif  // SPDLOG_DISABLE_DEFAULT_LOGGER

}

SPDLOG_INLINE registry::~registry() = default;

SPDLOG_INLINE void registry::register_logger(std::shared_ptr<logger> new_logger) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    register_logger_(std::move(new_logger));

}

SPDLOG_INLINE void registry::register_or_replace(std::shared_ptr<logger> new_logger) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    register_or_replace_(std::move(new_logger));

}

SPDLOG_INLINE void registry::initialize_logger(std::shared_ptr<logger> new_logger) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    new_logger->set_formatter(formatter_->clone());

    if (err_handler_) {

        new_logger->set_error_handler(err_handler_);

    }

    // set new level according to previously configured level or default level

    auto it = log_levels_.find(new_logger->name());

    auto new_level = it != log_levels_.end() ? it->second : global_log_level_;

    new_logger->set_level(new_level);

    new_logger->flush_on(flush_level_);

    if (backtrace_n_messages_ > 0) {

        new_logger->enable_backtrace(backtrace_n_messages_);

    }

    if (automatic_registration_) {

        register_logger_(std::move(new_logger));

    }

}

SPDLOG_INLINE std::shared_ptr<logger> registry::get(const std::string &logger_name) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    auto found = loggers_.find(logger_name);

    return found == loggers_.end() ? nullptr : found->second;

}

SPDLOG_INLINE std::shared_ptr<logger> registry::default_logger() {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    return default_logger_;

}

// Return raw ptr to the default logger.

// To be used directly by the spdlog default api (e.g. spdlog::info)

// This make the default API faster, but cannot be used concurrently with set_default_logger().

// e.g do not call set_default_logger() from one thread while calling spdlog::info() from another.

SPDLOG_INLINE logger *registry::get_default_raw() { return default_logger_.get(); }

// set default logger.

// the default logger is stored in default_logger_ (for faster retrieval) and in the loggers_ map.

SPDLOG_INLINE void registry::set_default_logger(std::shared_ptr<logger> new_default_logger) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    if (new_default_logger != nullptr) {

        loggers_[new_default_logger->name()] = new_default_logger;

    }

    default_logger_ = std::move(new_default_logger);

}

SPDLOG_INLINE void registry::set_tp(std::shared_ptr<thread_pool> tp) {

    std::lock_guard<std::recursive_mutex> lock(tp_mutex_);

    tp_ = std::move(tp);

}

SPDLOG_INLINE std::shared_ptr<thread_pool> registry::get_tp() {

    std::lock_guard<std::recursive_mutex> lock(tp_mutex_);

    return tp_;

}

// Set global formatter. Each sink in each logger will get a clone of this object

SPDLOG_INLINE void registry::set_formatter(std::unique_ptr<formatter> formatter) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    formatter_ = std::move(formatter);

    for (auto &l : loggers_) {

        l.second->set_formatter(formatter_->clone());

    }

}

SPDLOG_INLINE void registry::enable_backtrace(size_t n_messages) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    backtrace_n_messages_ = n_messages;

    for (auto &l : loggers_) {

        l.second->enable_backtrace(n_messages);

    }

}

SPDLOG_INLINE void registry::disable_backtrace() {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    backtrace_n_messages_ = 0;

    for (auto &l : loggers_) {

        l.second->disable_backtrace();

    }

}

SPDLOG_INLINE void registry::set_level(level::level_enum log_level) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    for (auto &l : loggers_) {

        l.second->set_level(log_level);

    }

    global_log_level_ = log_level;

}

SPDLOG_INLINE void registry::flush_on(level::level_enum log_level) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    for (auto &l : loggers_) {

        l.second->flush_on(log_level);

    }

    flush_level_ = log_level;

}

SPDLOG_INLINE void registry::set_error_handler(err_handler handler) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    for (auto &l : loggers_) {

        l.second->set_error_handler(handler);

    }

    err_handler_ = std::move(handler);

}

SPDLOG_INLINE void registry::apply_all(

    const std::function<void(const std::shared_ptr<logger>)> &fun) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    for (auto &l : loggers_) {

        fun(l.second);

    }

}

SPDLOG_INLINE void registry::flush_all() {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    for (auto &l : loggers_) {

        l.second->flush();

    }

}

SPDLOG_INLINE void registry::drop(const std::string &logger_name) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    auto is_default_logger = default_logger_ && default_logger_->name() == logger_name;

    loggers_.erase(logger_name);

    if (is_default_logger) {

        default_logger_.reset();

    }

}

SPDLOG_INLINE void registry::drop_all() {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    loggers_.clear();

    default_logger_.reset();

}

// clean all resources and threads started by the registry

SPDLOG_INLINE void registry::shutdown() {

    {

        std::lock_guard<std::mutex> lock(flusher_mutex_);

        periodic_flusher_.reset();

    }

    drop_all();

    {

        std::lock_guard<std::recursive_mutex> lock(tp_mutex_);

        tp_.reset();

    }

}

SPDLOG_INLINE std::recursive_mutex &registry::tp_mutex() { return tp_mutex_; }

SPDLOG_INLINE void registry::set_automatic_registration(bool automatic_registration) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    automatic_registration_ = automatic_registration;

}

SPDLOG_INLINE void registry::set_levels(log_levels levels, level::level_enum *global_level) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    log_levels_ = std::move(levels);

    auto global_level_requested = global_level != nullptr;

    global_log_level_ = global_level_requested ? *global_level : global_log_level_;

    for (auto &logger : loggers_) {

        auto logger_entry = log_levels_.find(logger.first);

        if (logger_entry != log_levels_.end()) {

            logger.second->set_level(logger_entry->second);

        } else if (global_level_requested) {

            logger.second->set_level(*global_level);

        }

    }

}

SPDLOG_INLINE registry &registry::instance() {

    static registry s_instance;

    return s_instance;

}

SPDLOG_INLINE void registry::apply_logger_env_levels(std::shared_ptr<logger> new_logger) {

    std::lock_guard<std::mutex> lock(logger_map_mutex_);

    auto it = log_levels_.find(new_logger->name());

    auto new_level = it != log_levels_.end() ? it->second : global_log_level_;

    new_logger->set_level(new_level);

}

SPDLOG_INLINE void registry::throw_if_exists_(const std::string &logger_name) {

    if (loggers_.find(logger_name) != loggers_.end()) {

        throw_spdlog_ex("logger with name '" + logger_name + "' already exists");

    }

}

SPDLOG_INLINE void registry::register_logger_(std::shared_ptr<logger> new_logger) {

    auto &logger_name = new_logger->name();

    throw_if_exists_(logger_name);

    loggers_[logger_name] = std::move(new_logger);

}

SPDLOG_INLINE void registry::register_or_replace_(std::shared_ptr<logger> new_logger) {

    loggers_[new_logger->name()] = std::move(new_logger);

}

}  // namespace details

}  // namespace spdlog