# -*- coding: utf-8 -*-
from aiogram import Bot, Dispatcher, executor, types
from aiogram.contrib.fsm_storage.memory import MemoryStorage
import random
import asyncio
import time

bot = Bot('5570384358:AAGHA-m8emyJ4oHrru4jeyw-G0xnj3xlVHg', parse_mode='HTML', disable_web_page_preview=True)
dp = Dispatcher(bot,storage=MemoryStorage())

mainkb = types.ReplyKeyboardMarkup(
    resize_keyboard=True,
    keyboard = [
        [
            types.KeyboardButton(text='/timer')
        ]
    ]
)

timerkb = types.ReplyKeyboardMarkup(
    resize_keyboard=True,
    keyboard = [
        [
            types.KeyboardButton(text='30 секунд')
        ],
        [
            types.KeyboardButton(text='1 минута')
        ],
        [
            types.KeyboardButton(text='5 минут')
        ],
        [
            types.KeyboardButton(text='вернуться назад')
        ]
    ]
)

closekb = types.ReplyKeyboardMarkup(
    resize_keyboard=True,
    keyboard = [
        [
            types.KeyboardButton(text='/close')
        ]
    ]
)

@dp.message_handler(text='вернуться назад')
@dp.message_handler(commands='start')
async def cmd_start(message: types.Message):
    await message.answer('Добро пожаловать, это бот-помощник.', reply_markup=mainkb)

@dp.message_handler(commands='timer')
async def cmd_start(message: types.Message):
    await message.answer('Вы открыли режим Timer.', reply_markup=timerkb)

@dp.message_handler(text='30 секунд')
async def cmd_start(message: types.Message):
    await message.answer(f'засек <b>30 секунд</b>', reply_markup=closekb)
    await asyncio.sleep(30)
    await message.answer(f'<b>30 секунд</b> истекло!')

@dp.message_handler(text='1 минута')
async def cmd_start(message: types.Message):
    await message.answer(f'засек <b>1 минуту</b>', reply_markup=closekb)
    await asyncio.sleep(60)
    await message.answer(f'<b>1 минута</b> истекло!')

@dp.message_handler(text='5 минут')
async def cmd_start(message: types.Message):
    await message.answer(f'засек <b>5 минут</b>', reply_markup=closekb)
    await asyncio.sleep(300)
    await message.answer(f'<b>5 минут</b> истекло!')

@dp.message_handler(commands='close')
async def cmd_start(message: types.Message):
    await message.answer('Добро пожаловать, это бот-помощник.', reply_markup=mainkb)

executor.start_polling(dp)