remnawave-bedolaga-telegram-bot/app/handlers/subscription/purchase.py

import base64
import json
import logging
from datetime import datetime, timedelta
from typing import Dict, List, Any, Tuple, Optional
from urllib.parse import quote
from aiogram import Dispatcher, types, F
from aiogram.fsm.context import FSMContext
from aiogram.types import InlineKeyboardMarkup, InlineKeyboardButton
from sqlalchemy.ext.asyncio import AsyncSession
from app.config import settings, PERIOD_PRICES, get_traffic_prices
from app.database.crud.discount_offer import (
    get_offer_by_id,
    mark_offer_claimed,
)
from app.database.crud.promo_offer_template import get_promo_offer_template_by_id
from app.database.crud.subscription import (
    create_trial_subscription,
    create_paid_subscription, add_subscription_traffic, add_subscription_devices,
    update_subscription_autopay
)
from app.database.crud.transaction import create_transaction
from app.database.crud.user import subtract_user_balance
from app.database.models import (
    User, TransactionType, SubscriptionStatus,
    Subscription
)
from app.keyboards.inline import (
    get_subscription_keyboard, get_trial_keyboard,
    get_subscription_period_keyboard, get_traffic_packages_keyboard,
    get_countries_keyboard, get_devices_keyboard,
    get_subscription_confirm_keyboard, get_autopay_keyboard,
    get_autopay_days_keyboard, get_back_keyboard,
    get_add_traffic_keyboard,
    get_change_devices_keyboard, get_reset_traffic_confirm_keyboard,
    get_manage_countries_keyboard,
    get_device_selection_keyboard, get_connection_guide_keyboard,
    get_app_selection_keyboard, get_specific_app_keyboard,
    get_updated_subscription_settings_keyboard, get_insufficient_balance_keyboard,
    get_extend_subscription_keyboard_with_prices, get_confirm_change_devices_keyboard,
    get_devices_management_keyboard, get_device_management_help_keyboard,
    get_happ_cryptolink_keyboard,
    get_happ_download_platform_keyboard, get_happ_download_link_keyboard,
    get_happ_download_button_row,
    get_payment_methods_keyboard_with_cart,
    get_subscription_confirm_keyboard_with_cart,
    get_insufficient_balance_keyboard_with_cart
)
from app.localization.texts import get_texts
from app.services.admin_notification_service import AdminNotificationService
from app.services.remnawave_service import RemnaWaveService
from app.services.subscription_checkout_service import (
    clear_subscription_checkout_draft,
    get_subscription_checkout_draft,
    save_subscription_checkout_draft,
    should_offer_checkout_resume,
)
from app.services.subscription_service import SubscriptionService
from app.utils.miniapp_buttons import build_miniapp_or_callback_button
from app.services.promo_offer_service import promo_offer_service
from app.states import SubscriptionStates
from app.utils.pagination import paginate_list
from app.utils.pricing_utils import (
    calculate_months_from_days,
    get_remaining_months,
    calculate_prorated_price,
    validate_pricing_calculation,
    format_period_description,
    apply_percentage_discount,
)
from app.utils.subscription_utils import (
    get_display_subscription_link,
    get_happ_cryptolink_redirect_link,
    convert_subscription_link_to_happ_scheme,
)
from app.utils.promo_offer import (
    build_promo_offer_hint,
    get_user_active_promo_discount_percent,
)

from .common import _apply_promo_offer_discount, _get_promo_offer_discount_percent, logger, update_traffic_prices
from .autopay import handle_autopay_menu, handle_subscription_cancel, handle_subscription_config_back, set_autopay_days, show_autopay_days, toggle_autopay
from .countries import _get_available_countries, _should_show_countries_management, apply_countries_changes, countries_continue, handle_add_countries, handle_manage_country, select_country
from .devices import confirm_add_devices, confirm_change_devices, confirm_reset_devices, execute_change_devices, get_current_devices_count, get_servers_display_names, handle_all_devices_reset_from_management, handle_app_selection, handle_change_devices, handle_device_guide, handle_device_management, handle_devices_page, handle_reset_devices, handle_single_device_reset, handle_specific_app_guide, show_device_connection_help
from .happ import handle_happ_download_back, handle_happ_download_close, handle_happ_download_platform_choice, handle_happ_download_request
from .links import handle_connect_subscription, handle_open_subscription_link
from .pricing import _build_subscription_period_prompt, _prepare_subscription_summary
from .promo import _build_promo_group_discount_text, _get_promo_offer_hint, claim_discount_offer, handle_promo_offer_close
from .traffic import confirm_reset_traffic, confirm_switch_traffic, execute_switch_traffic, handle_no_traffic_packages, handle_reset_traffic, handle_switch_traffic, select_traffic

async def show_subscription_info(
        callback: types.CallbackQuery,
        db_user: User,
        db: AsyncSession
):
    await db.refresh(db_user)

    texts = get_texts(db_user.language)
    subscription = db_user.subscription

    if not subscription:
        await callback.message.edit_text(
            texts.SUBSCRIPTION_NONE,
            reply_markup=get_back_keyboard(db_user.language)
        )
        await callback.answer()
        return

    from app.database.crud.subscription import check_and_update_subscription_status
    subscription = await check_and_update_subscription_status(db, subscription)

    subscription_service = SubscriptionService()
    await subscription_service.sync_subscription_usage(db, subscription)

    await db.refresh(subscription)

    current_time = datetime.utcnow()

    if subscription.status == "expired" or subscription.end_date <= current_time:
        actual_status = "expired"
        status_display = texts.t("SUBSCRIPTION_STATUS_EXPIRED", "Истекла")
        status_emoji = "🔴"
    elif subscription.status == "active" and subscription.end_date > current_time:
        if subscription.is_trial:
            actual_status = "trial_active"
            status_display = texts.t("SUBSCRIPTION_STATUS_TRIAL", "Тестовая")
            status_emoji = "🎯"
        else:
            actual_status = "paid_active"
            status_display = texts.t("SUBSCRIPTION_STATUS_ACTIVE", "Активна")
            status_emoji = "💎"
    else:
        actual_status = "unknown"
        status_display = texts.t("SUBSCRIPTION_STATUS_UNKNOWN", "Неизвестно")
        status_emoji = "❓"

    if subscription.end_date <= current_time:
        days_left = 0
        time_left_text = texts.t("SUBSCRIPTION_TIME_LEFT_EXPIRED", "истёк")
        warning_text = ""
    else:
        delta = subscription.end_date - current_time
        days_left = delta.days
        hours_left = delta.seconds // 3600

        if days_left > 1:
            time_left_text = texts.t("SUBSCRIPTION_TIME_LEFT_DAYS", "{days} дн.").format(days=days_left)
            warning_text = ""
        elif days_left == 1:
            time_left_text = texts.t("SUBSCRIPTION_TIME_LEFT_DAYS", "{days} дн.").format(days=days_left)
            warning_text = texts.t("SUBSCRIPTION_WARNING_TOMORROW", "\n⚠️ истекает завтра!")
        elif hours_left > 0:
            time_left_text = texts.t("SUBSCRIPTION_TIME_LEFT_HOURS", "{hours} ч.").format(hours=hours_left)
            warning_text = texts.t("SUBSCRIPTION_WARNING_TODAY", "\n⚠️ истекает сегодня!")
        else:
            minutes_left = (delta.seconds % 3600) // 60
            time_left_text = texts.t("SUBSCRIPTION_TIME_LEFT_MINUTES", "{minutes} мин.").format(
                minutes=minutes_left
            )
            warning_text = texts.t(
                "SUBSCRIPTION_WARNING_MINUTES",
                "\n🔴 истекает через несколько минут!",
            )

    subscription_type = (
        texts.t("SUBSCRIPTION_TYPE_TRIAL", "Триал")
        if subscription.is_trial
        else texts.t("SUBSCRIPTION_TYPE_PAID", "Платная")
    )

    used_traffic = f"{subscription.traffic_used_gb:.1f}"
    if subscription.traffic_limit_gb == 0:
        traffic_used_display = texts.t(
            "SUBSCRIPTION_TRAFFIC_UNLIMITED",
            "∞ (безлимит) | Использовано: {used} ГБ",
        ).format(used=used_traffic)
    else:
        traffic_used_display = texts.t(
            "SUBSCRIPTION_TRAFFIC_LIMITED",
            "{used} / {limit} ГБ",
        ).format(used=used_traffic, limit=subscription.traffic_limit_gb)

    devices_used_str = "—"
    devices_list = []
    devices_count = 0

    try:
        if db_user.remnawave_uuid:
            from app.services.remnawave_service import RemnaWaveService
            service = RemnaWaveService()

            async with service.get_api_client() as api:
                response = await api._make_request('GET', f'/api/hwid/devices/{db_user.remnawave_uuid}')

                if response and 'response' in response:
                    devices_info = response['response']
                    devices_count = devices_info.get('total', 0)
                    devices_list = devices_info.get('devices', [])
                    devices_used_str = str(devices_count)
                    logger.info(f"Найдено {devices_count} устройств для пользователя {db_user.telegram_id}")
                else:
                    logger.warning(f"Не удалось получить информацию об устройствах для {db_user.telegram_id}")

    except Exception as e:
        logger.error(f"Ошибка получения устройств для отображения: {e}")
        devices_used_str = await get_current_devices_count(db_user)

    servers_names = await get_servers_display_names(subscription.connected_squads)
    servers_display = (
        servers_names
        if servers_names
        else texts.t("SUBSCRIPTION_NO_SERVERS", "Нет серверов")
    )

    message = texts.t(
        "SUBSCRIPTION_OVERVIEW_TEMPLATE",
        """👤 {full_name}
💰 Баланс: {balance}
📱 Подписка: {status_emoji} {status_display}{warning}

📱 Информация о подписке
🎭 Тип: {subscription_type}
📅 Действует до: {end_date}
⏰ Осталось: {time_left}
📈 Трафик: {traffic}
🌍 Серверы: {servers}
📱 Устройства: {devices_used} / {device_limit}""",
    ).format(
        full_name=db_user.full_name,
        balance=settings.format_price(db_user.balance_kopeks),
        status_emoji=status_emoji,
        status_display=status_display,
        warning=warning_text,
        subscription_type=subscription_type,
        end_date=subscription.end_date.strftime("%d.%m.%Y %H:%M"),
        time_left=time_left_text,
        traffic=traffic_used_display,
        servers=servers_display,
        devices_used=devices_used_str,
        device_limit=subscription.device_limit,
    )

    if devices_list and len(devices_list) > 0:
        message += "\n\n" + texts.t(
            "SUBSCRIPTION_CONNECTED_DEVICES_TITLE",
            "<blockquote>📱 <b>Подключенные устройства:</b>\n",
        )
        for device in devices_list[:5]:
            platform = device.get('platform', 'Unknown')
            device_model = device.get('deviceModel', 'Unknown')
            device_info = f"{platform} - {device_model}"

            if len(device_info) > 35:
                device_info = device_info[:32] + "..."
            message += f"• {device_info}\n"
        message += texts.t("SUBSCRIPTION_CONNECTED_DEVICES_FOOTER", "</blockquote>")

    subscription_link = get_display_subscription_link(subscription)
    hide_subscription_link = settings.should_hide_subscription_link()

    if (
            subscription_link
            and actual_status in ["trial_active", "paid_active"]
            and not hide_subscription_link
    ):
        message += "\n\n" + texts.t(
            "SUBSCRIPTION_CONNECT_LINK_SECTION",
            "🔗 <b>Ссылка для подключения:</b>\n<code>{subscription_url}</code>",
        ).format(subscription_url=subscription_link)
        message += "\n\n" + texts.t(
            "SUBSCRIPTION_CONNECT_LINK_PROMPT",
            "📱 Скопируйте ссылку и добавьте в ваше VPN приложение",
        )

    await callback.message.edit_text(
        message,
        reply_markup=get_subscription_keyboard(
            db_user.language,
            has_subscription=True,
            is_trial=subscription.is_trial,
            subscription=subscription
        ),
        parse_mode="HTML"
    )
    await callback.answer()

async def show_trial_offer(
        callback: types.CallbackQuery,
        db_user: User,
        db: AsyncSession
):
    texts = get_texts(db_user.language)

    if db_user.subscription or db_user.has_had_paid_subscription:
        await callback.message.edit_text(
            texts.TRIAL_ALREADY_USED,
            reply_markup=get_back_keyboard(db_user.language)
        )
        await callback.answer()
        return

    trial_server_name = texts.t("TRIAL_SERVER_DEFAULT_NAME", "🎯 Тестовый сервер")
    try:
        from app.database.crud.server_squad import (
            get_server_squad_by_uuid,
            get_trial_eligible_server_squads,
        )

        trial_squads = await get_trial_eligible_server_squads(db, include_unavailable=True)

        if trial_squads:
            if len(trial_squads) == 1:
                trial_server_name = trial_squads[0].display_name
            else:
                trial_server_name = texts.t(
                    "TRIAL_SERVER_RANDOM_POOL",
                    "🎲 Случайный из {count} серверов",
                ).format(count=len(trial_squads))
        elif settings.TRIAL_SQUAD_UUID:
            trial_server = await get_server_squad_by_uuid(db, settings.TRIAL_SQUAD_UUID)
            if trial_server:
                trial_server_name = trial_server.display_name
            else:
                logger.warning(
                    "Триальный сервер с UUID %s не найден в БД",
                    settings.TRIAL_SQUAD_UUID,
                )
        else:
            logger.warning("Не настроены сквады для выдачи триалов")

    except Exception as e:
        logger.error(f"Ошибка получения триального сервера: {e}")

    trial_text = texts.TRIAL_AVAILABLE.format(
        days=settings.TRIAL_DURATION_DAYS,
        traffic=settings.TRIAL_TRAFFIC_LIMIT_GB,
        devices=settings.TRIAL_DEVICE_LIMIT,
        server_name=trial_server_name
    )

    await callback.message.edit_text(
        trial_text,
        reply_markup=get_trial_keyboard(db_user.language)
    )
    await callback.answer()

async def activate_trial(
        callback: types.CallbackQuery,
        db_user: User,
        db: AsyncSession
):
    from app.services.admin_notification_service import AdminNotificationService

    texts = get_texts(db_user.language)

    if db_user.subscription or db_user.has_had_paid_subscription:
        await callback.message.edit_text(
            texts.TRIAL_ALREADY_USED,
            reply_markup=get_back_keyboard(db_user.language)
        )
        await callback.answer()
        return

    try:
        subscription = await create_trial_subscription(db, db_user.id)

        await db.refresh(db_user)

        subscription_service = SubscriptionService()
        remnawave_user = await subscription_service.create_remnawave_user(
            db, subscription
        )

        await db.refresh(db_user)

        try:
            notification_service = AdminNotificationService(callback.bot)
            await notification_service.send_trial_activation_notification(db, db_user, subscription)
        except Exception as e:
            logger.error(f"Ошибка отправки уведомления о триале: {e}")

        subscription_link = get_display_subscription_link(subscription)
        hide_subscription_link = settings.should_hide_subscription_link()

        if remnawave_user and subscription_link:
            if settings.is_happ_cryptolink_mode():
                trial_success_text = (
                        f"{texts.TRIAL_ACTIVATED}\n\n"
                        + texts.t(
                    "SUBSCRIPTION_HAPP_LINK_PROMPT",
                    "🔒 Ссылка на подписку создана. Нажмите кнопку \"Подключиться\" ниже, чтобы открыть её в Happ.",
                )
                        + "\n\n"
                        + texts.t(
                    "SUBSCRIPTION_IMPORT_INSTRUCTION_PROMPT",
                    "📱 Нажмите кнопку ниже, чтобы получить инструкцию по настройке VPN на вашем устройстве",
                )
                )
            elif hide_subscription_link:
                trial_success_text = (
                        f"{texts.TRIAL_ACTIVATED}\n\n"
                        + texts.t(
                    "SUBSCRIPTION_LINK_HIDDEN_NOTICE",
                    "ℹ️ Ссылка подписки доступна по кнопкам ниже или в разделе \"Моя подписка\".",
                )
                        + "\n\n"
                        + texts.t(
                    "SUBSCRIPTION_IMPORT_INSTRUCTION_PROMPT",
                    "📱 Нажмите кнопку ниже, чтобы получить инструкцию по настройке VPN на вашем устройстве",
                )
                )
            else:
                subscription_import_link = texts.t(
                    "SUBSCRIPTION_IMPORT_LINK_SECTION",
                    "🔗 <b>Ваша ссылка для импорта в VPN приложение:</b>\n<code>{subscription_url}</code>",
                ).format(subscription_url=subscription_link)

                trial_success_text = (
                    f"{texts.TRIAL_ACTIVATED}\n\n"
                    f"{subscription_import_link}\n\n"
                    f"{texts.t('SUBSCRIPTION_IMPORT_INSTRUCTION_PROMPT', '📱 Нажмите кнопку ниже, чтобы получить инструкцию по настройке VPN на вашем устройстве')}"
                )

            connect_mode = settings.CONNECT_BUTTON_MODE

            if connect_mode == "miniapp_subscription":
                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=[
                    [
                        InlineKeyboardButton(
                            text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"),
                            web_app=types.WebAppInfo(url=subscription_link),
                        )
                    ],
                    [InlineKeyboardButton(text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                                          callback_data="back_to_menu")],
                ])
            elif connect_mode == "miniapp_custom":
                if not settings.MINIAPP_CUSTOM_URL:
                    await callback.answer(
                        texts.t(
                            "CUSTOM_MINIAPP_URL_NOT_SET",
                            "⚠ Кастомная ссылка для мини-приложения не настроена",
                        ),
                        show_alert=True,
                    )
                    return

                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=[
                    [
                        InlineKeyboardButton(
                            text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"),
                            web_app=types.WebAppInfo(url=settings.MINIAPP_CUSTOM_URL),
                        )
                    ],
                    [InlineKeyboardButton(text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                                          callback_data="back_to_menu")],
                ])
            elif connect_mode == "link":
                rows = [
                    [InlineKeyboardButton(text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"), url=subscription_link)]
                ]
                happ_row = get_happ_download_button_row(texts)
                if happ_row:
                    rows.append(happ_row)
                rows.append([
                    InlineKeyboardButton(
                        text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                        callback_data="back_to_menu"
                    )
                ])
                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=rows)
            elif connect_mode == "happ_cryptolink":
                rows = [
                    [
                        InlineKeyboardButton(
                            text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"),
                            callback_data="open_subscription_link",
                        )
                    ]
                ]
                happ_row = get_happ_download_button_row(texts)
                if happ_row:
                    rows.append(happ_row)
                rows.append([
                    InlineKeyboardButton(
                        text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                        callback_data="back_to_menu"
                    )
                ])
                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=rows)
            else:
                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=[
                    [InlineKeyboardButton(text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"),
                                          callback_data="subscription_connect")],
                    [InlineKeyboardButton(text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                                          callback_data="back_to_menu")],
                ])

            await callback.message.edit_text(
                trial_success_text,
                reply_markup=connect_keyboard,
                parse_mode="HTML"
            )
        else:
            await callback.message.edit_text(
                f"{texts.TRIAL_ACTIVATED}\n\n⚠️ Ссылка генерируется, попробуйте перейти в раздел 'Моя подписка' через несколько секунд.",
                reply_markup=get_back_keyboard(db_user.language)
            )

        logger.info(f"✅ Активирована тестовая подписка для пользователя {db_user.telegram_id}")

    except Exception as e:
        logger.error(f"Ошибка активации триала: {e}")
        await callback.message.edit_text(
            texts.ERROR,
            reply_markup=get_back_keyboard(db_user.language)
        )

    await callback.answer()

async def start_subscription_purchase(
        callback: types.CallbackQuery,
        state: FSMContext,
        db_user: User,
        db: AsyncSession,
):
    texts = get_texts(db_user.language)

    await callback.message.edit_text(
        await _build_subscription_period_prompt(db_user, texts, db),
        reply_markup=get_subscription_period_keyboard(db_user.language),
        parse_mode="HTML",
    )

    subscription = getattr(db_user, 'subscription', None)
    initial_devices = settings.DEFAULT_DEVICE_LIMIT

    if subscription and getattr(subscription, 'device_limit', None):
        initial_devices = max(settings.DEFAULT_DEVICE_LIMIT, subscription.device_limit)

    initial_data = {
        'period_days': None,
        'countries': [],
        'devices': initial_devices,
        'total_price': 0
    }

    if settings.is_traffic_fixed():
        initial_data['traffic_gb'] = settings.get_fixed_traffic_limit()
    else:
        initial_data['traffic_gb'] = None

    await state.set_data(initial_data)
    await state.set_state(SubscriptionStates.selecting_period)
    await callback.answer()

async def save_cart_and_redirect_to_topup(
        callback: types.CallbackQuery,
        state: FSMContext,
        db_user: User,
        missing_amount: int
):
    texts = get_texts(db_user.language)
    data = await state.get_data()

    await state.set_state(SubscriptionStates.cart_saved_for_topup)
    await state.update_data({
        **data,
        'saved_cart': True,
        'missing_amount': missing_amount,
        'return_to_cart': True
    })

    await callback.message.edit_text(
        f"💰 Недостаточно средств для оформления подписки\n\n"
        f"Требуется: {texts.format_price(missing_amount)}\n"
        f"У вас: {texts.format_price(db_user.balance_kopeks)}\n\n"
        f"🛒 Ваша корзина сохранена!\n"
        f"После пополнения баланса вы сможете вернуться к оформлению подписки.\n\n"
        f"Выберите способ пополнения:",
        reply_markup=get_payment_methods_keyboard_with_cart(
            db_user.language,
            missing_amount,
        ),
        parse_mode="HTML"
    )

async def return_to_saved_cart(
        callback: types.CallbackQuery,
        state: FSMContext,
        db_user: User,
        db: AsyncSession
):
    data = await state.get_data()
    texts = get_texts(db_user.language)

    if not data.get('saved_cart'):
        await callback.answer("❌ Сохраненная корзина не найдена", show_alert=True)
        return

    total_price = data.get('total_price', 0)

    if db_user.balance_kopeks < total_price:
        missing_amount = total_price - db_user.balance_kopeks
        await callback.message.edit_text(
            f"❌ Все еще недостаточно средств\n\n"
            f"Требуется: {texts.format_price(total_price)}\n"
            f"У вас: {texts.format_price(db_user.balance_kopeks)}\n"
            f"Не хватает: {texts.format_price(missing_amount)}",
            reply_markup=get_insufficient_balance_keyboard_with_cart(
                db_user.language,
                missing_amount,
            )
        )
        return

    countries = await _get_available_countries(db_user.promo_group_id)
    selected_countries_names = []

    months_in_period = calculate_months_from_days(data['period_days'])
    period_display = format_period_description(data['period_days'], db_user.language)

    for country in countries:
        if country['uuid'] in data['countries']:
            selected_countries_names.append(country['name'])

    if settings.is_traffic_fixed():
        traffic_display = "Безлимитный" if data['traffic_gb'] == 0 else f"{data['traffic_gb']} ГБ"
    else:
        traffic_display = "Безлимитный" if data['traffic_gb'] == 0 else f"{data['traffic_gb']} ГБ"

    summary_text = (
        "🛒 Восстановленная корзина\n\n"
        f"📅 Период: {period_display}\n"
        f"📊 Трафик: {traffic_display}\n"
        f"🌍 Страны: {', '.join(selected_countries_names)}\n"
        f"📱 Устройства: {data['devices']}\n\n"
        f"💎 Общая стоимость: {texts.format_price(total_price)}\n\n"
        "Подтверждаете покупку?"
    )

    await callback.message.edit_text(
        summary_text,
        reply_markup=get_subscription_confirm_keyboard_with_cart(db_user.language),
        parse_mode="HTML"
    )

    await state.set_state(SubscriptionStates.confirming_purchase)
    await callback.answer("✅ Корзина восстановлена!")

async def handle_extend_subscription(
        callback: types.CallbackQuery,
        db_user: User,
        db: AsyncSession
):
    texts = get_texts(db_user.language)
    subscription = db_user.subscription

    if not subscription or subscription.is_trial:
        await callback.answer("⚠ Продление доступно только для платных подписок", show_alert=True)
        return

    subscription_service = SubscriptionService()

    available_periods = settings.get_available_renewal_periods()
    renewal_prices = {}
    promo_offer_percent = _get_promo_offer_discount_percent(db_user)

    for days in available_periods:
        try:
            months_in_period = calculate_months_from_days(days)

            from app.config import PERIOD_PRICES
            base_price_original = PERIOD_PRICES.get(days, 0)
            period_discount_percent = db_user.get_promo_discount("period", days)
            base_price, _ = apply_percentage_discount(
                base_price_original,
                period_discount_percent,
            )

            servers_price_per_month, _ = await subscription_service.get_countries_price_by_uuids(
                subscription.connected_squads,
                db,
                promo_group_id=db_user.promo_group_id,
            )
            servers_discount_percent = db_user.get_promo_discount(
                "servers",
                days,
            )
            servers_discount_per_month = servers_price_per_month * servers_discount_percent // 100
            total_servers_price = (servers_price_per_month - servers_discount_per_month) * months_in_period

            additional_devices = max(0, subscription.device_limit - settings.DEFAULT_DEVICE_LIMIT)
            devices_price_per_month = additional_devices * settings.PRICE_PER_DEVICE
            devices_discount_percent = db_user.get_promo_discount(
                "devices",
                days,
            )
            devices_discount_per_month = devices_price_per_month * devices_discount_percent // 100
            total_devices_price = (devices_price_per_month - devices_discount_per_month) * months_in_period

            traffic_price_per_month = settings.get_traffic_price(subscription.traffic_limit_gb)
            traffic_discount_percent = db_user.get_promo_discount(
                "traffic",
                days,
            )
            traffic_discount_per_month = traffic_price_per_month * traffic_discount_percent // 100
            total_traffic_price = (traffic_price_per_month - traffic_discount_per_month) * months_in_period

            total_original_price = (
                base_price_original
                + servers_price_per_month * months_in_period
                + devices_price_per_month * months_in_period
                + traffic_price_per_month * months_in_period
            )

            price = base_price + total_servers_price + total_devices_price + total_traffic_price
            promo_component = _apply_promo_offer_discount(db_user, price)

            renewal_prices[days] = {
                "final": promo_component["discounted"],
                "original": total_original_price,
            }

        except Exception as e:
            logger.error(f"Ошибка расчета цены для периода {days}: {e}")
            continue

    if not renewal_prices:
        await callback.answer("⚠ Нет доступных периодов для продления", show_alert=True)
        return

    prices_text = ""

    for days in available_periods:
        if days not in renewal_prices:
            continue

        price_info = renewal_prices[days]

        if isinstance(price_info, dict):
            final_price = price_info.get("final")
            if final_price is None:
                final_price = price_info.get("original", 0)
            original_price = price_info.get("original", final_price)
        else:
            final_price = price_info
            original_price = final_price

        has_discount = original_price > final_price

        period_display = format_period_description(days, db_user.language)

        if has_discount:
            prices_text += (
                "📅 "
                f"{period_display} - <s>{texts.format_price(original_price)}</s> "
                f"{texts.format_price(final_price)}\n"
            )
        else:
            prices_text += (
                "📅 "
                f"{period_display} - {texts.format_price(final_price)}\n"
            )

    promo_discounts_text = _build_promo_group_discount_text(
        db_user,
        available_periods,
        texts=texts,
    )

    message_text = (
        "⏰ Продление подписки\n\n"
        f"Осталось дней: {subscription.days_left}\n\n"
        f"<b>Ваша текущая конфигурация:</b>\n"
        f"🌍 Серверов: {len(subscription.connected_squads)}\n"
        f"📊 Трафик: {texts.format_traffic(subscription.traffic_limit_gb)}\n"
        f"📱 Устройств: {subscription.device_limit}\n\n"
        f"<b>Выберите период продления:</b>\n"
        f"{prices_text.rstrip()}\n\n"
    )

    if promo_discounts_text:
        message_text += f"{promo_discounts_text}\n\n"

    promo_offer_hint = await _get_promo_offer_hint(
        db,
        db_user,
        texts,
        promo_offer_percent,
    )
    if promo_offer_hint:
        message_text += f"{promo_offer_hint}\n\n"

    message_text += "💡 <i>Цена включает все ваши текущие серверы и настройки</i>"

    await callback.message.edit_text(
        message_text,
        reply_markup=get_extend_subscription_keyboard_with_prices(db_user.language, renewal_prices),
        parse_mode="HTML"
    )

    await callback.answer()

async def confirm_extend_subscription(
        callback: types.CallbackQuery,
        db_user: User,
        db: AsyncSession
):
    from app.services.admin_notification_service import AdminNotificationService

    days = int(callback.data.split('_')[2])
    texts = get_texts(db_user.language)
    subscription = db_user.subscription

    if not subscription:
        await callback.answer("⚠ У вас нет активной подписки", show_alert=True)
        return

    months_in_period = calculate_months_from_days(days)
    old_end_date = subscription.end_date
    server_uuid_prices: Dict[str, int] = {}

    try:
        from app.config import PERIOD_PRICES

        base_price_original = PERIOD_PRICES.get(days, 0)
        period_discount_percent = db_user.get_promo_discount("period", days)
        base_price, base_discount_total = apply_percentage_discount(
            base_price_original,
            period_discount_percent,
        )

        subscription_service = SubscriptionService()
        servers_price_per_month, per_server_monthly_prices = await subscription_service.get_countries_price_by_uuids(
            subscription.connected_squads,
            db,
            promo_group_id=db_user.promo_group_id,
        )
        servers_discount_percent = db_user.get_promo_discount(
            "servers",
            days,
        )
        total_servers_price = 0
        total_servers_discount = 0

        for squad_uuid, server_monthly_price in zip(subscription.connected_squads, per_server_monthly_prices):
            discount_per_month = server_monthly_price * servers_discount_percent // 100
            discounted_per_month = server_monthly_price - discount_per_month
            total_servers_price += discounted_per_month * months_in_period
            total_servers_discount += discount_per_month * months_in_period
            server_uuid_prices[squad_uuid] = discounted_per_month * months_in_period

        discounted_servers_price_per_month = servers_price_per_month - (
                servers_price_per_month * servers_discount_percent // 100
        )

        additional_devices = max(0, subscription.device_limit - settings.DEFAULT_DEVICE_LIMIT)
        devices_price_per_month = additional_devices * settings.PRICE_PER_DEVICE
        devices_discount_percent = db_user.get_promo_discount(
            "devices",
            days,
        )
        devices_discount_per_month = devices_price_per_month * devices_discount_percent // 100
        discounted_devices_price_per_month = devices_price_per_month - devices_discount_per_month
        total_devices_price = discounted_devices_price_per_month * months_in_period

        traffic_price_per_month = settings.get_traffic_price(subscription.traffic_limit_gb)
        traffic_discount_percent = db_user.get_promo_discount(
            "traffic",
            days,
        )
        traffic_discount_per_month = traffic_price_per_month * traffic_discount_percent // 100
        discounted_traffic_price_per_month = traffic_price_per_month - traffic_discount_per_month
        total_traffic_price = discounted_traffic_price_per_month * months_in_period

        price = base_price + total_servers_price + total_devices_price + total_traffic_price
        original_price = price
        promo_component = _apply_promo_offer_discount(db_user, price)
        if promo_component["discount"] > 0:
            price = promo_component["discounted"]

        monthly_additions = (
                discounted_servers_price_per_month
                + discounted_devices_price_per_month
                + discounted_traffic_price_per_month
        )
        is_valid = validate_pricing_calculation(base_price, monthly_additions, months_in_period, original_price)

        if not is_valid:
            logger.error(f"Ошибка в расчете цены продления для пользователя {db_user.telegram_id}")
            await callback.answer("Ошибка расчета цены. Обратитесь в поддержку.", show_alert=True)
            return

        logger.info(f"💰 Расчет продления подписки {subscription.id} на {days} дней ({months_in_period} мес):")
        base_log = f"   📅 Период {days} дней: {base_price_original / 100}₽"
        if base_discount_total > 0:
            base_log += (
                f" → {base_price / 100}₽"
                f" (скидка {period_discount_percent}%: -{base_discount_total / 100}₽)"
            )
        logger.info(base_log)
        if total_servers_price > 0:
            logger.info(
                f"   🌐 Серверы: {servers_price_per_month / 100}₽/мес × {months_in_period}"
                f" = {total_servers_price / 100}₽"
                + (
                    f" (скидка {servers_discount_percent}%:"
                    f" -{total_servers_discount / 100}₽)"
                    if total_servers_discount > 0
                    else ""
                )
            )
        if total_devices_price > 0:
            logger.info(
                f"   📱 Устройства: {devices_price_per_month / 100}₽/мес × {months_in_period}"
                f" = {total_devices_price / 100}₽"
                + (
                    f" (скидка {devices_discount_percent}%:"
                    f" -{devices_discount_per_month * months_in_period / 100}₽)"
                    if devices_discount_percent > 0 and devices_discount_per_month > 0
                    else ""
                )
            )
        if total_traffic_price > 0:
            logger.info(
                f"   📊 Трафик: {traffic_price_per_month / 100}₽/мес × {months_in_period}"
                f" = {total_traffic_price / 100}₽"
                + (
                    f" (скидка {traffic_discount_percent}%:"
                    f" -{traffic_discount_per_month * months_in_period / 100}₽)"
                    if traffic_discount_percent > 0 and traffic_discount_per_month > 0
                    else ""
                )
            )
        if promo_component["discount"] > 0:
            logger.info(
                "   🎯 Промо-предложение: -%s₽ (%s%%)",
                promo_component["discount"] / 100,
                promo_component["percent"],
            )
        logger.info(f"   💎 ИТОГО: {price / 100}₽")

    except Exception as e:
        logger.error(f"⚠ ОШИБКА РАСЧЕТА ЦЕНЫ: {e}")
        await callback.answer("⚠ Ошибка расчета стоимости", show_alert=True)
        return

    if db_user.balance_kopeks < price:
        missing_kopeks = price - db_user.balance_kopeks
        required_text = texts.format_price(price)
        message_text = texts.t(
            "ADDON_INSUFFICIENT_FUNDS_MESSAGE",
            (
                "⚠️ <b>Недостаточно средств</b>\n\n"
                "Стоимость услуги: {required}\n"
                "На балансе: {balance}\n"
                "Не хватает: {missing}\n\n"
                "Выберите способ пополнения. Сумма подставится автоматически."
            ),
        ).format(
            required=required_text,
            balance=texts.format_price(db_user.balance_kopeks),
            missing=texts.format_price(missing_kopeks),
        )

        await callback.message.edit_text(
            message_text,
            reply_markup=get_insufficient_balance_keyboard(
                db_user.language,
                amount_kopeks=missing_kopeks,
            ),
            parse_mode="HTML",
        )
        await callback.answer()
        return

    try:
        success = await subtract_user_balance(
            db,
            db_user,
            price,
            f"Продление подписки на {days} дней",
            consume_promo_offer=promo_component["discount"] > 0,
        )

        if not success:
            await callback.answer("⚠ Ошибка списания средств", show_alert=True)
            return

        current_time = datetime.utcnow()

        if subscription.end_date > current_time:
            new_end_date = subscription.end_date + timedelta(days=days)
        else:
            new_end_date = current_time + timedelta(days=days)

        subscription.end_date = new_end_date

        subscription.status = SubscriptionStatus.ACTIVE.value
        subscription.updated_at = current_time

        await db.commit()
        await db.refresh(subscription)
        await db.refresh(db_user)

        # ensure freshly loaded values are available even if SQLAlchemy expires
        # attributes on subsequent access
        refreshed_end_date = subscription.end_date
        refreshed_balance = db_user.balance_kopeks

        from app.database.crud.server_squad import get_server_ids_by_uuids
        from app.database.crud.subscription import add_subscription_servers

        server_ids = await get_server_ids_by_uuids(db, subscription.connected_squads)
        if server_ids:
            from sqlalchemy import select
            from app.database.models import ServerSquad

            result = await db.execute(
                select(ServerSquad.id, ServerSquad.squad_uuid).where(ServerSquad.id.in_(server_ids))
            )
            id_to_uuid = {row.id: row.squad_uuid for row in result}
            default_price = total_servers_price // len(server_ids) if server_ids else 0
            server_prices_for_period = [
                server_uuid_prices.get(id_to_uuid.get(server_id, ""), default_price)
                for server_id in server_ids
            ]
            await add_subscription_servers(db, subscription, server_ids, server_prices_for_period)

        try:
            remnawave_result = await subscription_service.update_remnawave_user(
                db,
                subscription,
                reset_traffic=settings.RESET_TRAFFIC_ON_PAYMENT,
                reset_reason="продление подписки",
            )
            if remnawave_result:
                logger.info("✅ RemnaWave обновлен успешно")
            else:
                logger.error("⚠ ОШИБКА ОБНОВЛЕНИЯ REMNAWAVE")
        except Exception as e:
            logger.error(f"⚠ ИСКЛЮЧЕНИЕ ПРИ ОБНОВЛЕНИИ REMNAWAVE: {e}")

        transaction = await create_transaction(
            db=db,
            user_id=db_user.id,
            type=TransactionType.SUBSCRIPTION_PAYMENT,
            amount_kopeks=price,
            description=f"Продление подписки на {days} дней ({months_in_period} мес)"
        )

        try:
            notification_service = AdminNotificationService(callback.bot)
            await notification_service.send_subscription_extension_notification(
                db,
                db_user,
                subscription,
                transaction,
                days,
                old_end_date,
                new_end_date=refreshed_end_date,
                balance_after=refreshed_balance,
            )
        except Exception as e:
            logger.error(f"Ошибка отправки уведомления о продлении: {e}")

        success_message = (
            "✅ Подписка успешно продлена!\n\n"
            f"⏰ Добавлено: {days} дней\n"
            f"Действует до: {refreshed_end_date.strftime('%d.%m.%Y %H:%M')}\n\n"
            f"💰 Списано: {texts.format_price(price)}"
        )

        if promo_component["discount"] > 0:
            success_message += (
                f" (включая доп. скидку {promo_component['percent']}%:"
                f" -{texts.format_price(promo_component['discount'])})"
            )

        await callback.message.edit_text(
            success_message,
            reply_markup=get_back_keyboard(db_user.language)
        )

        logger.info(f"✅ Пользователь {db_user.telegram_id} продлил подписку на {days} дней за {price / 100}₽")

    except Exception as e:
        logger.error(f"⚠ КРИТИЧЕСКАЯ ОШИБКА ПРОДЛЕНИЯ: {e}")
        import traceback
        logger.error(f"TRACEBACK: {traceback.format_exc()}")

        await callback.message.edit_text(
            "⚠ Произошла ошибка при продлении подписки. Обратитесь в поддержку.",
            reply_markup=get_back_keyboard(db_user.language)
        )

    await callback.answer()

async def select_period(
        callback: types.CallbackQuery,
        state: FSMContext,
        db_user: User
):
    period_days = int(callback.data.split('_')[1])
    texts = get_texts(db_user.language)

    data = await state.get_data()
    data['period_days'] = period_days
    data['total_price'] = PERIOD_PRICES[period_days]

    if settings.is_traffic_fixed():
        fixed_traffic_price = settings.get_traffic_price(settings.get_fixed_traffic_limit())
        data['total_price'] += fixed_traffic_price
        data['traffic_gb'] = settings.get_fixed_traffic_limit()

    await state.set_data(data)

    if settings.is_traffic_selectable():
        available_packages = [pkg for pkg in settings.get_traffic_packages() if pkg['enabled']]

        if not available_packages:
            await callback.answer("⚠️ Пакеты трафика не настроены", show_alert=True)
            return

        await callback.message.edit_text(
            texts.SELECT_TRAFFIC,
            reply_markup=get_traffic_packages_keyboard(db_user.language)
        )
        await state.set_state(SubscriptionStates.selecting_traffic)
    else:
        if await _should_show_countries_management(db_user):
            countries = await _get_available_countries(db_user.promo_group_id)
            await callback.message.edit_text(
                texts.SELECT_COUNTRIES,
                reply_markup=get_countries_keyboard(countries, [], db_user.language)
            )
            await state.set_state(SubscriptionStates.selecting_countries)
        else:
            countries = await _get_available_countries(db_user.promo_group_id)
            available_countries = [c for c in countries if c.get('is_available', True)]
            data['countries'] = [available_countries[0]['uuid']] if available_countries else []
            await state.set_data(data)

            selected_devices = data.get('devices', settings.DEFAULT_DEVICE_LIMIT)

            await callback.message.edit_text(
                texts.SELECT_DEVICES,
                reply_markup=get_devices_keyboard(selected_devices, db_user.language)
            )
            await state.set_state(SubscriptionStates.selecting_devices)

    await callback.answer()

async def select_devices(
        callback: types.CallbackQuery,
        state: FSMContext,
        db_user: User
):
    if not callback.data.startswith("devices_") or callback.data == "devices_continue":
        await callback.answer("❌ Некорректный запрос", show_alert=True)
        return

    try:
        devices = int(callback.data.split('_')[1])
    except (ValueError, IndexError):
        await callback.answer("❌ Некорректное количество устройств", show_alert=True)
        return

    data = await state.get_data()

    base_price = (
            PERIOD_PRICES[data['period_days']] +
            settings.get_traffic_price(data['traffic_gb'])
    )

    countries = await _get_available_countries(db_user.promo_group_id)
    countries_price = sum(
        c['price_kopeks'] for c in countries
        if c['uuid'] in data['countries']
    )

    devices_price = max(0, devices - settings.DEFAULT_DEVICE_LIMIT) * settings.PRICE_PER_DEVICE

    data['devices'] = devices
    data['total_price'] = base_price + countries_price + devices_price
    await state.set_data(data)

    await callback.message.edit_reply_markup(
        reply_markup=get_devices_keyboard(devices, db_user.language)
    )
    await callback.answer()

async def devices_continue(
        callback: types.CallbackQuery,
        state: FSMContext,
        db_user: User,
        db: AsyncSession
):
    if not callback.data == "devices_continue":
        await callback.answer("⚠️ Некорректный запрос", show_alert=True)
        return

    data = await state.get_data()
    texts = get_texts(db_user.language)

    try:
        summary_text, prepared_data = await _prepare_subscription_summary(db_user, data, texts)
    except ValueError:
        logger.error(f"Ошибка в расчете цены подписки для пользователя {db_user.telegram_id}")
        await callback.answer("Ошибка расчета цены. Обратитесь в поддержку.", show_alert=True)
        return

    await state.set_data(prepared_data)
    await save_subscription_checkout_draft(db_user.id, prepared_data)

    await callback.message.edit_text(
        summary_text,
        reply_markup=get_subscription_confirm_keyboard(db_user.language),
        parse_mode="HTML",
    )

    await state.set_state(SubscriptionStates.confirming_purchase)
    await callback.answer()

async def confirm_purchase(
        callback: types.CallbackQuery,
        state: FSMContext,
        db_user: User,
        db: AsyncSession
):
    from app.services.admin_notification_service import AdminNotificationService

    data = await state.get_data()
    texts = get_texts(db_user.language)

    await save_subscription_checkout_draft(db_user.id, dict(data))
    resume_callback = (
        "subscription_resume_checkout"
        if should_offer_checkout_resume(db_user, True)
        else None
    )

    countries = await _get_available_countries(db_user.promo_group_id)

    months_in_period = data.get(
        'months_in_period', calculate_months_from_days(data['period_days'])
    )

    base_price = data.get('base_price')
    base_price_original = data.get('base_price_original')
    base_discount_percent = data.get('base_discount_percent')
    base_discount_total = data.get('base_discount_total')

    if base_price is None:
        base_price_original = PERIOD_PRICES[data['period_days']]
        base_discount_percent = db_user.get_promo_discount(
            "period",
            data['period_days'],
        )
        base_price, base_discount_total = apply_percentage_discount(
            base_price_original,
            base_discount_percent,
        )
    else:
        if base_price_original is None:
            base_price_original = PERIOD_PRICES[data['period_days']]
        if base_discount_percent is None:
            base_discount_percent = db_user.get_promo_discount(
                "period",
                data['period_days'],
            )
        if base_discount_total is None:
            _, base_discount_total = apply_percentage_discount(
                base_price_original,
                base_discount_percent,
            )
    server_prices = data.get('server_prices_for_period', [])

    if not server_prices:
        countries_price_per_month = 0
        per_month_prices: List[int] = []
        for country in countries:
            if country['uuid'] in data['countries']:
                server_price_per_month = country['price_kopeks']
                countries_price_per_month += server_price_per_month
                per_month_prices.append(server_price_per_month)

        servers_discount_percent = db_user.get_promo_discount(
            "servers",
            data['period_days'],
        )
        total_servers_price = 0
        total_servers_discount = 0
        discounted_servers_price_per_month = 0
        server_prices = []

        for server_price_per_month in per_month_prices:
            discounted_per_month, discount_per_month = apply_percentage_discount(
                server_price_per_month,
                servers_discount_percent,
            )
            total_price_for_server = discounted_per_month * months_in_period
            total_discount_for_server = discount_per_month * months_in_period

            discounted_servers_price_per_month += discounted_per_month
            total_servers_price += total_price_for_server
            total_servers_discount += total_discount_for_server
            server_prices.append(total_price_for_server)

        total_countries_price = total_servers_price
    else:
        total_countries_price = data.get('total_servers_price', sum(server_prices))
        countries_price_per_month = data.get('servers_price_per_month', 0)
        discounted_servers_price_per_month = data.get('servers_discounted_price_per_month', countries_price_per_month)
        total_servers_discount = data.get('servers_discount_total', 0)
        servers_discount_percent = data.get('servers_discount_percent', 0)

    additional_devices = max(0, data['devices'] - settings.DEFAULT_DEVICE_LIMIT)
    devices_price_per_month = data.get(
        'devices_price_per_month', additional_devices * settings.PRICE_PER_DEVICE
    )
    if 'devices_discount_percent' in data:
        devices_discount_percent = data.get('devices_discount_percent', 0)
        discounted_devices_price_per_month = data.get(
            'devices_discounted_price_per_month', devices_price_per_month
        )
        devices_discount_total = data.get('devices_discount_total', 0)
        total_devices_price = data.get(
            'total_devices_price', discounted_devices_price_per_month * months_in_period
        )
    else:
        devices_discount_percent = db_user.get_promo_discount(
            "devices",
            data['period_days'],
        )
        discounted_devices_price_per_month, discount_per_month = apply_percentage_discount(
            devices_price_per_month,
            devices_discount_percent,
        )
        devices_discount_total = discount_per_month * months_in_period
        total_devices_price = discounted_devices_price_per_month * months_in_period

    if settings.is_traffic_fixed():
        final_traffic_gb = settings.get_fixed_traffic_limit()
        traffic_price_per_month = data.get(
            'traffic_price_per_month', settings.get_traffic_price(final_traffic_gb)
        )
    else:
        final_traffic_gb = data.get('final_traffic_gb', data.get('traffic_gb'))
        traffic_price_per_month = data.get(
            'traffic_price_per_month', settings.get_traffic_price(data['traffic_gb'])
        )

    if 'traffic_discount_percent' in data:
        traffic_discount_percent = data.get('traffic_discount_percent', 0)
        discounted_traffic_price_per_month = data.get(
            'traffic_discounted_price_per_month', traffic_price_per_month
        )
        traffic_discount_total = data.get('traffic_discount_total', 0)
        total_traffic_price = data.get(
            'total_traffic_price', discounted_traffic_price_per_month * months_in_period
        )
    else:
        traffic_discount_percent = db_user.get_promo_discount(
            "traffic",
            data['period_days'],
        )
        discounted_traffic_price_per_month, discount_per_month = apply_percentage_discount(
            traffic_price_per_month,
            traffic_discount_percent,
        )
        traffic_discount_total = discount_per_month * months_in_period
        total_traffic_price = discounted_traffic_price_per_month * months_in_period

    total_servers_price = data.get('total_servers_price', total_countries_price)

    cached_total_price = data['total_price']
    cached_promo_discount_value = data.get('promo_offer_discount_value', 0)

    validation_total_price = data.get('total_price_before_promo_offer')
    if validation_total_price is None and cached_promo_discount_value > 0:
        validation_total_price = cached_total_price + cached_promo_discount_value
    if validation_total_price is None:
        validation_total_price = cached_total_price

    current_promo_offer_percent = _get_promo_offer_discount_percent(db_user)
    if current_promo_offer_percent > 0:
        final_price, promo_offer_discount_value = apply_percentage_discount(
            validation_total_price,
            current_promo_offer_percent,
        )
        promo_offer_discount_percent = current_promo_offer_percent
    else:
        final_price = validation_total_price
        promo_offer_discount_value = 0
        promo_offer_discount_percent = 0

    discounted_monthly_additions = data.get(
        'discounted_monthly_additions',
        discounted_traffic_price_per_month
        + discounted_servers_price_per_month
        + discounted_devices_price_per_month,
    )

    is_valid = validate_pricing_calculation(
        base_price,
        discounted_monthly_additions,
        months_in_period,
        validation_total_price,
    )

    if not is_valid:
        logger.error(f"Ошибка в расчете цены подписки для пользователя {db_user.telegram_id}")
        await callback.answer("Ошибка расчета цены. Обратитесь в поддержку.", show_alert=True)
        return

    logger.info(f"Расчет покупки подписки на {data['period_days']} дней ({months_in_period} мес):")
    base_log = f"   Период: {base_price_original / 100}₽"
    if base_discount_total and base_discount_total > 0:
        base_log += (
            f" → {base_price / 100}₽"
            f" (скидка {base_discount_percent}%: -{base_discount_total / 100}₽)"
        )
    logger.info(base_log)
    if total_traffic_price > 0:
        message = (
            f"   Трафик: {traffic_price_per_month / 100}₽/мес × {months_in_period}"
            f" = {total_traffic_price / 100}₽"
        )
        if traffic_discount_total > 0:
            message += (
                f" (скидка {traffic_discount_percent}%:"
                f" -{traffic_discount_total / 100}₽)"
            )
        logger.info(message)
    if total_servers_price > 0:
        message = (
            f"   Серверы: {countries_price_per_month / 100}₽/мес × {months_in_period}"
            f" = {total_servers_price / 100}₽"
        )
        if total_servers_discount > 0:
            message += (
                f" (скидка {servers_discount_percent}%:"
                f" -{total_servers_discount / 100}₽)"
            )
        logger.info(message)
    if total_devices_price > 0:
        message = (
            f"   Устройства: {devices_price_per_month / 100}₽/мес × {months_in_period}"
            f" = {total_devices_price / 100}₽"
        )
        if devices_discount_total > 0:
            message += (
                f" (скидка {devices_discount_percent}%:"
                f" -{devices_discount_total / 100}₽)"
            )
        logger.info(message)
    if promo_offer_discount_value > 0:
        logger.info(
            "   🎯 Промо-предложение: -%s₽ (%s%%)",
            promo_offer_discount_value / 100,
            promo_offer_discount_percent,
        )
    logger.info(f"   ИТОГО: {final_price / 100}₽")

    if db_user.balance_kopeks < final_price:
        missing_kopeks = final_price - db_user.balance_kopeks
        message_text = texts.t(
            "ADDON_INSUFFICIENT_FUNDS_MESSAGE",
            (
                "⚠️ <b>Недостаточно средств</b>\n\n"
                "Стоимость услуги: {required}\n"
                "На балансе: {balance}\n"
                "Не хватает: {missing}\n\n"
                "Выберите способ пополнения. Сумма подставится автоматически."
            ),
        ).format(
            required=texts.format_price(final_price),
            balance=texts.format_price(db_user.balance_kopeks),
            missing=texts.format_price(missing_kopeks),
        )

        await callback.message.edit_text(
            message_text,
            reply_markup=get_insufficient_balance_keyboard(
                db_user.language,
                resume_callback=resume_callback,
                amount_kopeks=missing_kopeks,
            ),
            parse_mode="HTML",
        )
        await callback.answer()
        return

    purchase_completed = False

    try:
        success = await subtract_user_balance(
            db,
            db_user,
            final_price,
            f"Покупка подписки на {data['period_days']} дней",
            consume_promo_offer=promo_offer_discount_value > 0,
        )

        if not success:
            missing_kopeks = final_price - db_user.balance_kopeks
            message_text = texts.t(
                "ADDON_INSUFFICIENT_FUNDS_MESSAGE",
                (
                    "⚠️ <b>Недостаточно средств</b>\n\n"
                    "Стоимость услуги: {required}\n"
                    "На балансе: {balance}\n"
                    "Не хватает: {missing}\n\n"
                    "Выберите способ пополнения. Сумма подставится автоматически."
                ),
            ).format(
                required=texts.format_price(final_price),
                balance=texts.format_price(db_user.balance_kopeks),
                missing=texts.format_price(missing_kopeks),
            )

            await callback.message.edit_text(
                message_text,
                reply_markup=get_insufficient_balance_keyboard(
                    db_user.language,
                    resume_callback=resume_callback,
                    amount_kopeks=missing_kopeks,
                ),
                parse_mode="HTML",
            )
            await callback.answer()
            return

        existing_subscription = db_user.subscription
        was_trial_conversion = False
        current_time = datetime.utcnow()

        if existing_subscription:
            logger.info(f"Обновляем существующую подписку пользователя {db_user.telegram_id}")

            bonus_period = timedelta()

            if existing_subscription.is_trial:
                logger.info(f"Конверсия из триала в платную для пользователя {db_user.telegram_id}")
                was_trial_conversion = True

                trial_duration = (current_time - existing_subscription.start_date).days

                if settings.TRIAL_ADD_REMAINING_DAYS_TO_PAID and existing_subscription.end_date:
                    remaining_trial_delta = existing_subscription.end_date - current_time
                    if remaining_trial_delta.total_seconds() > 0:
                        bonus_period = remaining_trial_delta
                        logger.info(
                            "Добавляем оставшееся время триала (%s) к новой подписке пользователя %s",
                            bonus_period,
                            db_user.telegram_id,
                        )

                try:
                    from app.database.crud.subscription_conversion import create_subscription_conversion
                    await create_subscription_conversion(
                        db=db,
                        user_id=db_user.id,
                        trial_duration_days=trial_duration,
                        payment_method="balance",
                        first_payment_amount_kopeks=final_price,
                        first_paid_period_days=data['period_days']
                    )
                    logger.info(
                        f"Записана конверсия: {trial_duration} дн. триал → {data['period_days']} дн. платная за {final_price / 100}₽")
                except Exception as conversion_error:
                    logger.error(f"Ошибка записи конверсии: {conversion_error}")

            existing_subscription.is_trial = False
            existing_subscription.status = SubscriptionStatus.ACTIVE.value
            existing_subscription.traffic_limit_gb = final_traffic_gb
            existing_subscription.device_limit = data['devices']
            existing_subscription.connected_squads = data['countries']

            existing_subscription.start_date = current_time
            existing_subscription.end_date = current_time + timedelta(days=data['period_days']) + bonus_period
            existing_subscription.updated_at = current_time

            existing_subscription.traffic_used_gb = 0.0

            await db.commit()
            await db.refresh(existing_subscription)
            subscription = existing_subscription

        else:
            logger.info(f"Создаем новую подписку для пользователя {db_user.telegram_id}")
            subscription = await create_paid_subscription_with_traffic_mode(
                db=db,
                user_id=db_user.id,
                duration_days=data['period_days'],
                device_limit=data['devices'],
                connected_squads=data['countries'],
                traffic_gb=final_traffic_gb
            )

        from app.utils.user_utils import mark_user_as_had_paid_subscription
        await mark_user_as_had_paid_subscription(db, db_user)

        from app.database.crud.server_squad import get_server_ids_by_uuids, add_user_to_servers
        from app.database.crud.subscription import add_subscription_servers

        server_ids = await get_server_ids_by_uuids(db, data['countries'])

        if server_ids:
            await add_subscription_servers(db, subscription, server_ids, server_prices)
            await add_user_to_servers(db, server_ids)

            logger.info(f"Сохранены цены серверов за весь период: {server_prices}")

        await db.refresh(db_user)

        subscription_service = SubscriptionService()

        if db_user.remnawave_uuid:
            remnawave_user = await subscription_service.update_remnawave_user(
                db,
                subscription,
                reset_traffic=settings.RESET_TRAFFIC_ON_PAYMENT,
                reset_reason="покупка подписки",
            )
        else:
            remnawave_user = await subscription_service.create_remnawave_user(
                db,
                subscription,
                reset_traffic=settings.RESET_TRAFFIC_ON_PAYMENT,
                reset_reason="покупка подписки",
            )

        if not remnawave_user:
            logger.error(f"Не удалось создать/обновить RemnaWave пользователя для {db_user.telegram_id}")
            remnawave_user = await subscription_service.create_remnawave_user(
                db,
                subscription,
                reset_traffic=settings.RESET_TRAFFIC_ON_PAYMENT,
                reset_reason="покупка подписки (повторная попытка)",
            )

        transaction = await create_transaction(
            db=db,
            user_id=db_user.id,
            type=TransactionType.SUBSCRIPTION_PAYMENT,
            amount_kopeks=final_price,
            description=f"Подписка на {data['period_days']} дней ({months_in_period} мес)"
        )

        try:
            notification_service = AdminNotificationService(callback.bot)
            await notification_service.send_subscription_purchase_notification(
                db, db_user, subscription, transaction, data['period_days'], was_trial_conversion
            )
        except Exception as e:
            logger.error(f"Ошибка отправки уведомления о покупке: {e}")

        await db.refresh(db_user)
        await db.refresh(subscription)

        subscription_link = get_display_subscription_link(subscription)
        hide_subscription_link = settings.should_hide_subscription_link()

        discount_note = ""
        if promo_offer_discount_value > 0:
            discount_note = texts.t(
                "SUBSCRIPTION_PROMO_DISCOUNT_NOTE",
                "⚡ Доп. скидка {percent}%: -{amount}",
            ).format(
                percent=promo_offer_discount_percent,
                amount=texts.format_price(promo_offer_discount_value),
            )

        if remnawave_user and subscription_link:
            if settings.is_happ_cryptolink_mode():
                success_text = (
                        f"{texts.SUBSCRIPTION_PURCHASED}\n\n"
                        + texts.t(
                    "SUBSCRIPTION_HAPP_LINK_PROMPT",
                    "🔒 Ссылка на подписку создана. Нажмите кнопку \"Подключиться\" ниже, чтобы открыть её в Happ.",
                )
                        + "\n\n"
                        + texts.t(
                    "SUBSCRIPTION_IMPORT_INSTRUCTION_PROMPT",
                    "📱 Нажмите кнопку ниже, чтобы получить инструкцию по настройке VPN на вашем устройстве",
                )
                )
            elif hide_subscription_link:
                success_text = (
                        f"{texts.SUBSCRIPTION_PURCHASED}\n\n"
                        + texts.t(
                    "SUBSCRIPTION_LINK_HIDDEN_NOTICE",
                    "ℹ️ Ссылка подписки доступна по кнопкам ниже или в разделе \"Моя подписка\".",
                )
                        + "\n\n"
                        + texts.t(
                    "SUBSCRIPTION_IMPORT_INSTRUCTION_PROMPT",
                    "📱 Нажмите кнопку ниже, чтобы получить инструкцию по настройке VPN на вашем устройстве",
                )
                )
            else:
                import_link_section = texts.t(
                    "SUBSCRIPTION_IMPORT_LINK_SECTION",
                    "🔗 <b>Ваша ссылка для импорта в VPN приложение:</b>\\n<code>{subscription_url}</code>",
                ).format(subscription_url=subscription_link)

                success_text = (
                    f"{texts.SUBSCRIPTION_PURCHASED}\n\n"
                    f"{import_link_section}\n\n"
                    f"{texts.t('SUBSCRIPTION_IMPORT_INSTRUCTION_PROMPT', '📱 Нажмите кнопку ниже, чтобы получить инструкцию по настройке VPN на вашем устройстве')}"
                )

            if discount_note:
                success_text = f"{success_text}\n\n{discount_note}"

            connect_mode = settings.CONNECT_BUTTON_MODE

            if connect_mode == "miniapp_subscription":
                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=[
                    [
                        InlineKeyboardButton(
                            text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"),
                            web_app=types.WebAppInfo(url=subscription_link),
                        )
                    ],
                    [InlineKeyboardButton(text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                                          callback_data="back_to_menu")],
                ])
            elif connect_mode == "miniapp_custom":
                if not settings.MINIAPP_CUSTOM_URL:
                    await callback.answer(
                        texts.t(
                            "CUSTOM_MINIAPP_URL_NOT_SET",
                            "⚠ Кастомная ссылка для мини-приложения не настроена",
                        ),
                        show_alert=True,
                    )
                    return

                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=[
                    [
                        InlineKeyboardButton(
                            text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"),
                            web_app=types.WebAppInfo(url=settings.MINIAPP_CUSTOM_URL),
                        )
                    ],
                    [InlineKeyboardButton(text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                                          callback_data="back_to_menu")],
                ])
            elif connect_mode == "link":
                rows = [
                    [InlineKeyboardButton(text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"), url=subscription_link)]
                ]
                happ_row = get_happ_download_button_row(texts)
                if happ_row:
                    rows.append(happ_row)
                rows.append([InlineKeyboardButton(text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                                                  callback_data="back_to_menu")])
                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=rows)
            elif connect_mode == "happ_cryptolink":
                rows = [
                    [
                        InlineKeyboardButton(
                            text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"),
                            callback_data="open_subscription_link",
                        )
                    ]
                ]
                happ_row = get_happ_download_button_row(texts)
                if happ_row:
                    rows.append(happ_row)
                rows.append([InlineKeyboardButton(text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                                                  callback_data="back_to_menu")])
                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=rows)
            else:
                connect_keyboard = InlineKeyboardMarkup(inline_keyboard=[
                    [InlineKeyboardButton(text=texts.t("CONNECT_BUTTON", "🔗 Подключиться"),
                                          callback_data="subscription_connect")],
                    [InlineKeyboardButton(text=texts.t("BACK_TO_MAIN_MENU_BUTTON", "⬅️ В главное меню"),
                                          callback_data="back_to_menu")],
                ])

            await callback.message.edit_text(
                success_text,
                reply_markup=connect_keyboard,
                parse_mode="HTML"
            )
        else:
            purchase_text = texts.SUBSCRIPTION_PURCHASED
            if discount_note:
                purchase_text = f"{purchase_text}\n\n{discount_note}"
            await callback.message.edit_text(
                texts.t(
                    "SUBSCRIPTION_LINK_GENERATING_NOTICE",
                    "{purchase_text}\n\nСсылка генерируется, перейдите в раздел 'Моя подписка' через несколько секунд.",
                ).format(purchase_text=purchase_text),
                reply_markup=get_back_keyboard(db_user.language)
            )

        purchase_completed = True
        logger.info(
            f"Пользователь {db_user.telegram_id} купил подписку на {data['period_days']} дней за {final_price / 100}₽")

    except Exception as e:
        logger.error(f"Ошибка покупки подписки: {e}")
        await callback.message.edit_text(
            texts.ERROR,
            reply_markup=get_back_keyboard(db_user.language)
        )

    if purchase_completed:
        await clear_subscription_checkout_draft(db_user.id)

    await state.clear()
    await callback.answer()

async def resume_subscription_checkout(
        callback: types.CallbackQuery,
        state: FSMContext,
        db_user: User,
):
    texts = get_texts(db_user.language)

    draft = await get_subscription_checkout_draft(db_user.id)

    if not draft:
        await callback.answer(texts.NO_SAVED_SUBSCRIPTION_ORDER, show_alert=True)
        return

    try:
        summary_text, prepared_data = await _prepare_subscription_summary(db_user, draft, texts)
    except ValueError as exc:
        logger.error(
            f"Ошибка восстановления заказа подписки для пользователя {db_user.telegram_id}: {exc}"
        )
        await clear_subscription_checkout_draft(db_user.id)
        await callback.answer(texts.NO_SAVED_SUBSCRIPTION_ORDER, show_alert=True)
        return

    await state.set_data(prepared_data)
    await state.set_state(SubscriptionStates.confirming_purchase)
    await save_subscription_checkout_draft(db_user.id, prepared_data)

    await callback.message.edit_text(
        summary_text,
        reply_markup=get_subscription_confirm_keyboard(db_user.language),
        parse_mode="HTML",
    )

    await callback.answer()

async def create_paid_subscription_with_traffic_mode(
        db: AsyncSession,
        user_id: int,
        duration_days: int,
        device_limit: int,
        connected_squads: List[str],
        traffic_gb: Optional[int] = None
):
    from app.config import settings

    if traffic_gb is None:
        if settings.is_traffic_fixed():
            traffic_limit_gb = settings.get_fixed_traffic_limit()
        else:
            traffic_limit_gb = 0
    else:
        traffic_limit_gb = traffic_gb

    subscription = await create_paid_subscription(
        db=db,
        user_id=user_id,
        duration_days=duration_days,
        traffic_limit_gb=traffic_limit_gb,
        device_limit=device_limit,
        connected_squads=connected_squads,
        update_server_counters=False,
    )

    logger.info(f"📋 Создана подписка с трафиком: {traffic_limit_gb} ГБ (режим: {settings.TRAFFIC_SELECTION_MODE})")

    return subscription

async def handle_subscription_settings(
        callback: types.CallbackQuery,
        db_user: User,
        db: AsyncSession
):
    texts = get_texts(db_user.language)
    subscription = db_user.subscription

    if not subscription or subscription.is_trial:
        await callback.answer(
            texts.t(
                "SUBSCRIPTION_SETTINGS_PAID_ONLY",
                "⚠️ Настройки доступны только для платных подписок",
            ),
            show_alert=True,
        )
        return

    devices_used = await get_current_devices_count(db_user)

    settings_text = texts.t(
        "SUBSCRIPTION_SETTINGS_OVERVIEW",
        (
            "⚙️ <b>Настройки подписки</b>\n\n"
            "📊 <b>Текущие параметры:</b>\n"
            "🌐 Стран: {countries_count}\n"
            "📈 Трафик: {traffic_used} / {traffic_limit}\n"
            "📱 Устройства: {devices_used} / {devices_limit}\n\n"
            "Выберите что хотите изменить:"
        ),
    ).format(
        countries_count=len(subscription.connected_squads),
        traffic_used=texts.format_traffic(subscription.traffic_used_gb),
        traffic_limit=texts.format_traffic(subscription.traffic_limit_gb),
        devices_used=devices_used,
        devices_limit=subscription.device_limit,
    )

    show_countries = await _should_show_countries_management(db_user)

    await callback.message.edit_text(
        settings_text,
        reply_markup=get_updated_subscription_settings_keyboard(db_user.language, show_countries),
        parse_mode="HTML"
    )
    await callback.answer()

async def clear_saved_cart(
        callback: types.CallbackQuery,
        state: FSMContext,
        db_user: User,
        db: AsyncSession
):
    await state.clear()

    from app.handlers.menu import show_main_menu
    await show_main_menu(callback, db_user, db)

    await callback.answer("🗑️ Корзина очищена")

def register_handlers(dp: Dispatcher):
    update_traffic_prices()

    dp.callback_query.register(
        show_subscription_info,
        F.data == "menu_subscription"
    )

    dp.callback_query.register(
        show_trial_offer,
        F.data == "menu_trial"
    )

    dp.callback_query.register(
        activate_trial,
        F.data == "trial_activate"
    )

    dp.callback_query.register(
        start_subscription_purchase,
        F.data.in_(["menu_buy", "subscription_upgrade"])
    )

    dp.callback_query.register(
        handle_add_countries,
        F.data == "subscription_add_countries"
    )

    dp.callback_query.register(
        handle_switch_traffic,
        F.data == "subscription_switch_traffic"
    )

    dp.callback_query.register(
        confirm_switch_traffic,
        F.data.startswith("switch_traffic_")
    )

    dp.callback_query.register(
        execute_switch_traffic,
        F.data.startswith("confirm_switch_traffic_")
    )

    dp.callback_query.register(
        handle_change_devices,
        F.data == "subscription_change_devices"
    )

    dp.callback_query.register(
        confirm_change_devices,
        F.data.startswith("change_devices_")
    )

    dp.callback_query.register(
        execute_change_devices,
        F.data.startswith("confirm_change_devices_")
    )

    dp.callback_query.register(
        handle_extend_subscription,
        F.data == "subscription_extend"
    )

    dp.callback_query.register(
        handle_reset_traffic,
        F.data == "subscription_reset_traffic"
    )

    dp.callback_query.register(
        confirm_add_devices,
        F.data.startswith("add_devices_")
    )

    dp.callback_query.register(
        confirm_extend_subscription,
        F.data.startswith("extend_period_")
    )

    dp.callback_query.register(
        confirm_reset_traffic,
        F.data == "confirm_reset_traffic"
    )

    dp.callback_query.register(
        handle_reset_devices,
        F.data == "subscription_reset_devices"
    )

    dp.callback_query.register(
        confirm_reset_devices,
        F.data == "confirm_reset_devices"
    )

    dp.callback_query.register(
        select_period,
        F.data.startswith("period_"),
        SubscriptionStates.selecting_period
    )

    dp.callback_query.register(
        select_traffic,
        F.data.startswith("traffic_"),
        SubscriptionStates.selecting_traffic
    )

    dp.callback_query.register(
        select_devices,
        F.data.startswith("devices_") & ~F.data.in_(["devices_continue"]),
        SubscriptionStates.selecting_devices
    )

    dp.callback_query.register(
        devices_continue,
        F.data == "devices_continue",
        SubscriptionStates.selecting_devices
    )

    dp.callback_query.register(
        confirm_purchase,
        F.data == "subscription_confirm",
        SubscriptionStates.confirming_purchase
    )

    dp.callback_query.register(
        resume_subscription_checkout,
        F.data == "subscription_resume_checkout",
    )

    dp.callback_query.register(
        return_to_saved_cart,
        F.data == "return_to_saved_cart",
    )

    dp.callback_query.register(
        clear_saved_cart,
        F.data == "clear_saved_cart",
    )

    dp.callback_query.register(
        handle_autopay_menu,
        F.data == "subscription_autopay"
    )

    dp.callback_query.register(
        toggle_autopay,
        F.data.in_(["autopay_enable", "autopay_disable"])
    )

    dp.callback_query.register(
        show_autopay_days,
        F.data == "autopay_set_days"
    )

    dp.callback_query.register(
        handle_subscription_config_back,
        F.data == "subscription_config_back"
    )

    dp.callback_query.register(
        handle_subscription_cancel,
        F.data == "subscription_cancel"
    )

    dp.callback_query.register(
        set_autopay_days,
        F.data.startswith("autopay_days_")
    )

    dp.callback_query.register(
        select_country,
        F.data.startswith("country_"),
        SubscriptionStates.selecting_countries
    )

    dp.callback_query.register(
        countries_continue,
        F.data == "countries_continue",
        SubscriptionStates.selecting_countries
    )

    dp.callback_query.register(
        handle_manage_country,
        F.data.startswith("country_manage_")
    )

    dp.callback_query.register(
        apply_countries_changes,
        F.data == "countries_apply"
    )

    dp.callback_query.register(
        claim_discount_offer,
        F.data.startswith("claim_discount_")
    )

    dp.callback_query.register(
        handle_promo_offer_close,
        F.data == "promo_offer_close",
    )

    dp.callback_query.register(
        handle_happ_download_request,
        F.data == "subscription_happ_download"
    )

    dp.callback_query.register(
        handle_happ_download_platform_choice,
        F.data.in_([
            "happ_download_ios",
            "happ_download_android",
            "happ_download_pc",
            "happ_download_macos",
            "happ_download_windows",
        ])
    )

    dp.callback_query.register(
        handle_happ_download_close,
        F.data == "happ_download_close"
    )

    dp.callback_query.register(
        handle_happ_download_back,
        F.data == "happ_download_back"
    )

    dp.callback_query.register(
        handle_connect_subscription,
        F.data == "subscription_connect"
    )

    dp.callback_query.register(
        handle_device_guide,
        F.data.startswith("device_guide_")
    )

    dp.callback_query.register(
        handle_app_selection,
        F.data.startswith("app_list_")
    )

    dp.callback_query.register(
        handle_specific_app_guide,
        F.data.startswith("app_")
    )

    dp.callback_query.register(
        handle_open_subscription_link,
        F.data == "open_subscription_link"
    )

    dp.callback_query.register(
        handle_subscription_settings,
        F.data == "subscription_settings"
    )

    dp.callback_query.register(
        handle_no_traffic_packages,
        F.data == "no_traffic_packages"
    )

    dp.callback_query.register(
        handle_device_management,
        F.data == "subscription_manage_devices"
    )

    dp.callback_query.register(
        handle_devices_page,
        F.data.startswith("devices_page_")
    )

    dp.callback_query.register(
        handle_single_device_reset,
        F.data.regexp(r"^reset_device_\d+_\d+$")
    )

    dp.callback_query.register(
        handle_all_devices_reset_from_management,
        F.data == "reset_all_devices"
    )

    dp.callback_query.register(
        show_device_connection_help,
        F.data == "device_connection_help"
    )