// SPDX-FileCopyrightText: 2018 Citra Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later

#include <chrono>
#include <string>

#include <QEventLoop>
#include <QNetworkAccessManager>
#include <QNetworkReply>

#include <discord_rpc.h>
#include <fmt/ranges.h>

#include "common/common_types.h"
#include "common/string_util.h"
#include "core/core.h"
#include "core/loader/loader.h"
#include "yuzu/discord_impl.h"
#include "yuzu/uisettings.h"

namespace DiscordRPC {

DiscordImpl::DiscordImpl(Core::System& system_) : system{system_} {
    DiscordEventHandlers handlers{};
    // The number is the client ID for yuzu, it's used for images and the
    // application name
    Discord_Initialize("1322413013248118888", &handlers, 1, nullptr);
}

DiscordImpl::~DiscordImpl() {
    Discord_ClearPresence();
    Discord_Shutdown();
}

void DiscordImpl::Pause() {
    Discord_ClearPresence();
}

void DiscordImpl::UpdateGameStatus(bool use_default) {
    const std::string default_text = "yuzu is an emulator for the Nintendo Switch";
    const std::string default_image = "yuzu_logo";
    const std::string tinfoil_base_url = "https://tinfoil.media/ti/";
    s64 start_time = std::chrono::duration_cast<std::chrono::seconds>(
                         std::chrono::system_clock::now().time_since_epoch())
                         .count();
    DiscordRichPresence presence{};

    // Store the URL string to prevent it from being destroyed
    if (!game_title_id.empty()) {
        game_url = fmt::format("{}{}/128/128", tinfoil_base_url, game_title_id);
        // Make sure the string stays alive for the duration of the presence
        cached_url = game_url;
        presence.largeImageKey = cached_url.c_str();
    } else {
        presence.largeImageKey = cached_url.c_str();
    }

    presence.largeImageText = game_title.c_str();
    presence.smallImageKey = default_image.c_str();
    presence.smallImageText = default_text.c_str();
    // Remove title ID from display, only show game title
    presence.state = game_title.c_str();
    presence.details = "Currently in game";
    presence.startTimestamp = start_time;
    Discord_UpdatePresence(&presence);
}

void DiscordImpl::Update() {
    const std::string default_text = "yuzu is an emulator for the Nintendo Switch";
    const std::string default_image = "yuzu_logo";

    if (system.IsPoweredOn()) {
        system.GetAppLoader().ReadTitle(game_title);
        system.GetAppLoader().ReadProgramId(program_id);
        game_title_id = fmt::format("{:016X}", program_id);

        fmt::print("Title ID: {}\n", game_title_id);

        QNetworkAccessManager manager;
        QNetworkRequest request;
        request.setUrl(QUrl(QString::fromStdString(
            fmt::format("https://tinfoil.media/ti/{}/128/128", game_title_id))));
        request.setTransferTimeout(10000);
        QNetworkReply* reply = manager.head(request);
        QEventLoop request_event_loop;
        QObject::connect(reply, &QNetworkReply::finished, &request_event_loop, &QEventLoop::quit);
        request_event_loop.exec();

        if (reply->error()) {
            fmt::print("Failed to fetch game image: {} ({})\n", reply->errorString().toStdString(),
                       program_id);
        }

        UpdateGameStatus(reply->error());
        reply->deleteLater();
        return;
    }

    s64 start_time = std::chrono::duration_cast<std::chrono::seconds>(
                         std::chrono::system_clock::now().time_since_epoch())
                         .count();

    DiscordRichPresence presence{};
    presence.largeImageKey = default_image.c_str();
    presence.largeImageText = default_text.c_str();
    presence.details = "Currently not in game";
    presence.startTimestamp = start_time;
    Discord_UpdatePresence(&presence);
}
} // namespace DiscordRPC
