lambda_function.py

import datetime
from privat_service import PrivatService
from mono_service import MonoService
from telegram_service import TelegramService
from db_service import DbService

GOOD_PERSENTAGE = 0.8
DAY_FROM_SEND = 7

def lambda_handler(event, context):
    now = datetime.datetime.now()
    banks = []
    banks.append(PrivatService('USD'))
    banks.append(PrivatService('EUR'))
    banks.append(MonoService('EUR'))

    for bank in banks:
        if should_send(now.day, bank):
            response = TelegramService().send_message(bank.human_response())
            if(response['ok']):
                print('Message sent. ' + now.date().strftime('%d.%m.%Y') + ' Curs: ' + bank.human_response())
        DbService().set_data(bank)
        print(now.date().strftime('%d.%m.%Y') + ' Curs: ' + bank.human_response())

def should_send(day_of_month, bank_service):
    if bank_service.koeficient <= GOOD_PERSENTAGE:
        return True
    items = DbService().get_data(bank_service.bank_name, bank_service.currency)
    if not items:
        return False
    min_item = min(items, key=lambda x: x["koeficient"])
    if day_of_month >= DAY_FROM_SEND and bank_service.koeficient < min_item['koeficient']:
        return True

if __name__ == '__main__':
    lambda_handler(None, None)