import logging
import uuid

from aiogram import Router, types
from aiogram.fsm.context import FSMContext
from aiogram.fsm.state import State, StatesGroup
from aiogram.types import InlineKeyboardButton, InlineKeyboardMarkup
from aiohttp import web
from yookassa import Configuration, Payment 

from bot import bot
from config import YOOKASSA_SECRET_KEY, YOOKASSA_SHOP_ID
from database import (add_connection, check_connection_exists, get_key_count,
                      update_balance)
from handlers.profile import process_callback_view_profile

router = Router()

logging.basicConfig(level=logging.DEBUG)

Configuration.account_id = YOOKASSA_SHOP_ID
Configuration.secret_key = YOOKASSA_SECRET_KEY

logging.debug(f"Account ID: {YOOKASSA_SHOP_ID}")
logging.debug(f"Secret Key: {YOOKASSA_SECRET_KEY}")

class ReplenishBalanceState(StatesGroup):
    choosing_amount = State()
    waiting_for_payment_confirmation = State()

async def send_message_with_deletion(chat_id, text, reply_markup=None, state=None, message_key='last_message_id'):
    if state:
        try:
            state_data = await state.get_data()
            previous_message_id = state_data.get(message_key)

            if previous_message_id:
                await bot.delete_message(chat_id=chat_id, message_id=previous_message_id)
    
            sent_message = await bot.send_message(chat_id=chat_id, text=text, reply_markup=reply_markup)
            await state.update_data({message_key: sent_message.message_id})
    
        except Exception as e:
            print(f"Ошибка при удалении/отправке сообщения: {e}")
            return None

    return sent_message

@router.callback_query(lambda c: c.data == 'replenish_balance')
async def process_callback_replenish_balance(callback_query: types.CallbackQuery, state: FSMContext):
    tg_id = callback_query.from_user.id

    key_count = await get_key_count(tg_id)
    
    if key_count == 0:
        exists = await check_connection_exists(tg_id)
        if not exists:
            await add_connection(tg_id, balance=0.0, trial=0)

    amount_keyboard = InlineKeyboardMarkup(inline_keyboard=[
        [InlineKeyboardButton(text='100 RUB', callback_data='amount_100'), InlineKeyboardButton(text='300 RUB', callback_data='amount_300')],
        [InlineKeyboardButton(text='600 RUB', callback_data='amount_600'), InlineKeyboardButton(text='1000 RUB', callback_data='amount_1000')],
        [InlineKeyboardButton(text='⬅️ Назад', callback_data='back_to_profile')]
    ])
    
    await callback_query.message.edit_text(
        text="Выберите сумму пополнения:",
        reply_markup=amount_keyboard
    )
    await state.set_state(ReplenishBalanceState.choosing_amount)
    await callback_query.answer()

@router.callback_query(lambda c: c.data == 'back_to_profile')
async def back_to_profile_handler(callback_query: types.CallbackQuery, state: FSMContext):
    await process_callback_view_profile(callback_query, state)

@router.callback_query(lambda c: c.data.startswith('amount_'))
async def process_amount_selection(callback_query: types.CallbackQuery, state: FSMContext):
    data = callback_query.data.split('_', 1)

    if len(data) != 2:
        await send_message_with_deletion(callback_query.from_user.id, "Неверные данные для выбора суммы.", state=state, message_key='amount_error_message_id')
        return

    amount_str = data[1]
    try:
        amount = int(amount_str)
    except ValueError:
        await send_message_with_deletion(callback_query.from_user.id, "Некорректная сумма.", state=state, message_key='amount_error_message_id')
        return

    await state.update_data(amount=amount)
    await state.set_state(ReplenishBalanceState.waiting_for_payment_confirmation)

    state_data = await state.get_data()
    customer_name = callback_query.from_user.full_name
    customer_id = callback_query.from_user.id

    payment = Payment.create({
        "amount": {
            "value": str(amount),
            "currency": "RUB"
        },
        "confirmation": {
            "type": "redirect",
            "return_url": "https://pocomacho.ru/" 
        },
        "capture": True,
        "description": "Пополнение баланса",
        "receipt": {
            "customer": {
                "full_name": customer_name,
                "email": "client@example.com",
                "phone": "79000000000"
            },
            "items": [
                {
                    "description": "Пополнение баланса",
                    "quantity": "1.00",
                    "amount": {
                        "value": str(amount),
                        "currency": "RUB"
                    },
                    "vat_code": 6
                }
            ]
        },
        "metadata": {
            "user_id": customer_id
        }
    }, uuid.uuid4())

    if payment['status'] == 'pending':
        payment_url = payment['confirmation']['confirmation_url']

        confirm_keyboard = InlineKeyboardMarkup(inline_keyboard=[
            [InlineKeyboardButton(text='Пополнить', url=payment_url)],
            [InlineKeyboardButton(text='⬅️ Назад', callback_data='back_to_profile')]
        ])

        await callback_query.message.edit_text(
            text=f"Вы выбрали пополнение на {amount} рублей.",
            reply_markup=confirm_keyboard
        )
    else:
        await send_message_with_deletion(callback_query.from_user.id, "Ошибка при создании платежа.", state=state)

    await callback_query.answer()

async def send_payment_success_notification(user_id: int, amount: float):
    try:
        profile_keyboard = InlineKeyboardMarkup(inline_keyboard=[
            [InlineKeyboardButton(text='Перейти в профиль', callback_data='view_profile')]
        ])
        
        await bot.send_message(
            chat_id=user_id,
            text=f"Ваш баланс успешно пополнен на {amount} рублей. Спасибо за оплату!",
            reply_markup=profile_keyboard
        )
    except Exception as e:
        logging.error(f"Ошибка при отправке уведомления пользователю {user_id}: {e}")

async def payment_webhook(request):
    event = await request.json()

    logging.debug(f"Webhook event received: {event}")

    if event['event'] == 'payment.succeeded':
        user_id_str = event['object']['metadata']['user_id']
        amount_str = event['object']['amount']['value']
        
        try:
            user_id = int(user_id_str)
            amount = float(amount_str)
            
            logging.debug(f"Payment succeeded for user_id: {user_id}, amount: {amount}")
            await update_balance(user_id, amount)

            await send_payment_success_notification(user_id, amount)

        except ValueError as e:
            logging.error(f"Ошибка конвертации user_id или amount: {e}")
            return web.Response(status=400)

    return web.Response(status=200)