// SPDX-FileCopyrightText: 2021 Nheko Contributors
// SPDX-FileCopyrightText: 2022 Nheko Contributors
// SPDX-FileCopyrightText: 2023 Nheko Contributors
//
// SPDX-License-Identifier: GPL-3.0-or-later

#include "Logging.h"
#include "config/nheko.h"

#include "spdlog/cfg/helpers.h"
#include "spdlog/sinks/rotating_file_sink.h"
#include "spdlog/sinks/stdout_color_sinks.h"
#include "spdlog/spdlog.h"
#include <iostream>

#include <QString>
#include <QtGlobal>

#include <mtx/log.hpp>

namespace {
std::shared_ptr<spdlog::logger> db_logger     = nullptr;
std::shared_ptr<spdlog::logger> net_logger    = nullptr;
std::shared_ptr<spdlog::logger> crypto_logger = nullptr;
std::shared_ptr<spdlog::logger> ui_logger     = nullptr;
std::shared_ptr<spdlog::logger> qml_logger    = nullptr;

constexpr auto MAX_FILE_SIZE = 1024 * 1024 * 6;
constexpr auto MAX_LOG_FILES = 3;

void
qmlMessageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
    std::string localMsg = msg.toStdString();
    const char *file     = context.file ? context.file : "";
    const char *function = context.function ? context.function : "";

    if (
      // The default style has the point size set. If you use pixel size anywhere, you get
      // that warning, which is useless, since sometimes you need the pixel size to match the
      // text to the size of the outer element for example. This is done in the avatar and
      // without that you get one warning for every Avatar displayed, which is stupid!
      msg.endsWith(QStringLiteral("Both point size and pixel size set. Using pixel size.")))
        return;

    switch (type) {
    case QtDebugMsg:
        qml_logger->debug("{} ({}:{}, {})", localMsg, file, context.line, function);
        break;
    case QtInfoMsg:
        qml_logger->info("{} ({}:{}, {})", localMsg, file, context.line, function);
        break;
    case QtWarningMsg:
        qml_logger->warn("{} ({}:{}, {})", localMsg, file, context.line, function);
        break;
    case QtCriticalMsg:
        qml_logger->critical("{} ({}:{}, {})", localMsg, file, context.line, function);
        break;
    case QtFatalMsg:
        qml_logger->critical("{} ({}:{}, {})", localMsg, file, context.line, function);
        break;
    }
}
}

namespace nhlog {

void
init(const QString &level, const QString &path, bool to_stderr)
{
    std::vector<spdlog::sink_ptr> sinks;
    if (!path.isEmpty()) {
        auto file_sink = std::make_shared<spdlog::sinks::rotating_file_sink_mt>(
          path.toStdString(), MAX_FILE_SIZE, MAX_LOG_FILES);
        sinks.push_back(file_sink);
    }
    if (to_stderr) {
        auto console_sink = std::make_shared<spdlog::sinks::stderr_color_sink_mt>();
        sinks.push_back(console_sink);
    }

    mtx::utils::log::log()->sinks() = sinks;
    net_logger    = std::make_shared<spdlog::logger>("net", std::begin(sinks), std::end(sinks));
    ui_logger     = std::make_shared<spdlog::logger>("ui", std::begin(sinks), std::end(sinks));
    db_logger     = std::make_shared<spdlog::logger>("db", std::begin(sinks), std::end(sinks));
    crypto_logger = std::make_shared<spdlog::logger>("crypto", std::begin(sinks), std::end(sinks));
    qml_logger    = std::make_shared<spdlog::logger>("qml", std::begin(sinks), std::end(sinks));

    if (nheko::enable_debug_log) {
        db_logger->set_level(spdlog::level::trace);
        ui_logger->set_level(spdlog::level::trace);
        crypto_logger->set_level(spdlog::level::trace);
        net_logger->set_level(spdlog::level::trace);
        qml_logger->set_level(spdlog::level::trace);
        mtx::utils::log::log()->set_level(spdlog::level::trace);
    }

    spdlog::register_logger(net_logger);
    spdlog::register_logger(ui_logger);
    spdlog::register_logger(db_logger);
    spdlog::register_logger(crypto_logger);
    spdlog::register_logger(qml_logger);
    // We assume the mtxclient library will register its own logger.

    if (!level.isEmpty()) {
        spdlog::cfg::helpers::load_levels(level.toStdString());
    }

    qInstallMessageHandler(qmlMessageHandler);
}

std::shared_ptr<spdlog::logger>
ui()
{
    return ui_logger;
}

std::shared_ptr<spdlog::logger>
net()
{
    return net_logger;
}

std::shared_ptr<spdlog::logger>
db()
{
    return db_logger;
}

std::shared_ptr<spdlog::logger>
crypto()
{
    return crypto_logger;
}

std::shared_ptr<spdlog::logger>
qml()
{
    return qml_logger;
}
}