import telebot

import telezab
from app import app
from backend_locks import bot
from bot_database import is_whitelisted, format_regions_list, get_sorted_regions, log_user_event, \
    get_user_subscribed_regions
from app.models import Regions, Subscriptions
from app.extensions.db import db
from utilities.telegram_utilities import show_main_menu, show_settings_menu
from handlers import handle_my_subscriptions_button, handle_active_regions_button, handle_notification_mode_button


def handle_main_menu(message, chat_id, text):
    """Обработка команд в главном меню."""
    if text == 'Регистрация':
        telezab.state.set_state(chat_id, "REGISTRATION")
        telezab.handle_register(message)
    elif text == 'Настройки':
        telezab.state.set_state(chat_id, "SETTINGS_MENU")
        telezab.show_settings_menu(chat_id)
    elif text == 'Помощь':
        telezab.handle_help(message)
    elif text == 'Активные события':
        telezab.handle_active_triggers(message)
    else:
        bot.send_message(chat_id, "Команда не распознана.")
        show_main_menu(chat_id)


def handle_settings_menu(message, chat_id, text):
    """Обработка команд в меню настроек."""
    if text.lower() == 'подписаться':
        telezab.state.set_state(chat_id, "SUBSCRIBE")
        handle_subscribe_button(message)
    elif text.lower() == 'отписаться':
        telezab.state.set_state(chat_id, "UNSUBSCRIBE")
        handle_unsubscribe_button(message)
    elif text.lower() == 'мои подписки':
        handle_my_subscriptions_button(message)
    elif text.lower() == 'активные регионы':
        handle_active_regions_button(message)
    elif text.lower() == "режим уведомлений":
        handle_notification_mode_button(message)
    elif text.lower() == 'назад':
        telezab.state.set_state(chat_id, "MAIN_MENU")
        show_main_menu(chat_id)
    else:
        bot.send_message(chat_id, "Команда не распознана.")
        show_settings_menu(chat_id)


def handle_subscribe_button(message):
    chat_id = message.chat.id
    if not is_whitelisted(chat_id):
        bot.send_message(chat_id, "Вы не авторизованы для использования этого бота.")
        return
    username = message.from_user.username
    if username:
        username = f"@{username}"
    else:
        username = "N/A"
    regions_list = format_regions_list(get_sorted_regions())

    markup = telebot.types.InlineKeyboardMarkup()
    markup.add(telebot.types.InlineKeyboardButton(text="Отмена",
                                                  callback_data=f"cancel_action"))
    bot.send_message(chat_id, f"Отправьте номера регионов через запятую:\n{regions_list}\n", reply_markup=markup)
    bot.register_next_step_handler_by_chat_id(chat_id, process_subscription_button, chat_id, username)


def process_subscription_button(message, chat_id, username):
    subbed_regions = []
    invalid_regions = []
    if message.text.lower() == 'отмена':
        bot.send_message(chat_id, "Действие отменено.")
        telezab.state.set_state(chat_id, "SETTINGS_MENU")
        return show_settings_menu(chat_id)
    if not all(part.strip().isdigit() for part in message.text.split(',')):
        markup = telebot.types.InlineKeyboardMarkup()
        markup.add(telebot.types.InlineKeyboardButton(text="Отмена",
                                                      callback_data=f"cancel_action"))
        bot.send_message(chat_id, "Неверный формат данных. Введите номер или номера регионов через запятую.",
                         reply_markup=markup)
        bot.register_next_step_handler_by_chat_id(chat_id, process_subscription_button, chat_id, username)
        return
    region_ids = [int(part.strip()) for part in message.text.split(',')]

    with app.app_context():
        # Получаем список валидных ID регионов из базы
        valid_region_ids = [r.region_id for r in Regions.query.filter(Regions.active == True).all()]

        for region_id in region_ids:
            if region_id not in valid_region_ids:
                invalid_regions.append(str(region_id))
                continue

            subscription = Subscriptions.query.filter_by(chat_id=chat_id, region_id=region_id).first()
            if subscription:
                if not subscription.active:
                    subscription.active = True
                    db.session.add(subscription)
                    subbed_regions.append(str(region_id))
                else:
                    # Уже подписан, можно тоже добавить для отчета
                    subbed_regions.append(str(region_id))
            else:
                new_sub = Subscriptions(chat_id=chat_id, region_id=region_id, active=True)
                db.session.add(new_sub)
                subbed_regions.append(str(region_id))

        db.session.commit()

    if invalid_regions:
        bot.send_message(chat_id, f"Регион с ID {', '.join(invalid_regions)} не существует. Введите корректные номера или 'отмена'.")

    if subbed_regions:
        bot.send_message(chat_id, f"Подписка на регионы: {', '.join(subbed_regions)} оформлена.")
        log_user_event(chat_id, username, f"Subscribed to regions: {', '.join(subbed_regions)}")

    telezab.state.set_state(chat_id, "SETTINGS_MENU")
    show_settings_menu(chat_id)


def handle_unsubscribe_button(message):
    chat_id = message.chat.id
    if not is_whitelisted(chat_id):
        bot.send_message(chat_id, "Вы не авторизованы для использования этого бота.")
        telebot.logger.info(f"Unauthorized access attempt by {chat_id}")
        telezab.state.set_state(chat_id, "REGISTRATION")
        return show_main_menu(chat_id)
    username = message.from_user.username
    if username:
        username = f"@{username}"
    else:
        username = "N/A"
    # Получаем список подписок пользователя
    user_regions = get_user_subscribed_regions(chat_id)

    if not user_regions:
        bot.send_message(chat_id, "Вы не подписаны ни на один регион.")
        telezab.state.set_state(chat_id, "SETTINGS_MENU")
        return show_settings_menu(chat_id)
    regions_list = format_regions_list(user_regions)
    markup = telebot.types.InlineKeyboardMarkup()
    markup.add(telebot.types.InlineKeyboardButton(text="Отмена", callback_data=f"cancel_action"))
    bot.send_message(chat_id,
                     f"Отправьте номер или номера регионов, от которых хотите отписаться (через запятую):\n{regions_list}\n",
                     reply_markup=markup)
    bot.register_next_step_handler_by_chat_id(chat_id, process_unsubscription_button, chat_id, username)


def process_unsubscription_button(message, chat_id, username):
    unsubbed_regions = []
    invalid_regions = []

    markup = telebot.types.InlineKeyboardMarkup()
    markup.add(telebot.types.InlineKeyboardButton(text="Отмена", callback_data="cancel_action"))

    if message.text.lower() == 'отмена':
        bot.send_message(chat_id, "Действие отменено.")
        telezab.state.set_state(chat_id, "SETTINGS_MENU")
        return show_settings_menu(chat_id)

    # Проверка корректности формата ввода
    if not all(part.strip().isdigit() for part in message.text.split(',')):
        bot.send_message(chat_id, "Некорректный формат. Введите номера регионов через запятую.", reply_markup=markup)
        bot.register_next_step_handler_by_chat_id(chat_id, process_unsubscription_button, chat_id, username)
        return

    region_ids = [region_id.strip() for region_id in message.text.split(',')]

    with app.app_context():
        valid_region_ids = [str(region[0]) for region in get_user_subscribed_regions(chat_id)]  # get_user_subscribed_regions уже внутри app_context

        for region_id in region_ids:
            if region_id not in valid_region_ids:
                invalid_regions.append(region_id)
                continue

            subscription = db.session.query(Subscriptions).filter_by(
                chat_id=chat_id,
                region_id=int(region_id)
            ).first()

            if subscription:
                subscription.active = False
                unsubbed_regions.append(region_id)

        db.session.commit()

    if invalid_regions:
        bot.send_message(chat_id, f"Регион(ы) с ID {', '.join(invalid_regions)} не найдены в ваших подписках.")

    bot.send_message(chat_id, f"Отписка от регионов: {', '.join(unsubbed_regions)} выполнена.")
    log_user_event(chat_id, username, f"Unsubscribed from regions: {', '.join(unsubbed_regions)}")
    telezab.state.set_state(chat_id, "SETTINGS_MENU")
    show_settings_menu(chat_id)