Get notified when there are new slots availale at the IMPFZENTREN in BERLIN

run.py

import os
from datetime import datetime
from time import sleep

from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException, ElementClickInterceptedException

"""

Installation requirements:

    $ brew install terminal-notifier
    $ brew install --cask chromedriver
    $ pip3 install selenium
    
Change the latest date (open appointments after this date will be ignored)

    $ python3 run.py

"""

latest_date = '2021-05-29'

urls = [
    "https://www.doctolib.de/institut/berlin/ciz-berlin-berlin?pid=practice-158436",
    "https://www.doctolib.de/institut/berlin/ciz-berlin-berlin?pid=practice-158433",
    "https://www.doctolib.de/institut/berlin/ciz-berlin-berlin?pid=practice-158435",
    "https://www.doctolib.de/institut/berlin/ciz-berlin-berlin?pid=practice-158437",
    "https://www.doctolib.de/institut/berlin/ciz-berlin-berlin?pid=practice-158434",
    "https://www.doctolib.de/institut/berlin/ciz-berlin-berlin?pid=practice-158431"
]


waiting_secs = 1
slot = None

driver = webdriver.Chrome()
current_vaccine = 'moderna'

ref_date = datetime.strptime(latest_date, '%Y-%m-%d')


def notify(title, message):
    t = '-title {!r}'.format(title)
    m = '-message {!r}'.format(message)
    os.system('terminal-notifier {}'.format(' '.join([m, t])))


def has_warning_message():
    try:
        warning = driver.find_element_by_css_selector('.booking-message-warning span')
        if 'Aufgrund der starken Nachfrage ist dieses Zentrum nicht mehr verfügbar' in warning.text:
            return True
        if 'Sie können für diesen Arzt keine Termine online vereinbaren.' in warning.text:
            return True
        if 'Keine Verfügbarkeiten' in warning.text:
            return True
    except NoSuchElementException:
        pass

    try:
        warning = driver.find_element_by_css_selector('h1.lang-de')
        if 'Service vorübergehend außer Betrieb' in warning.text:
            return True
    except NoSuchElementException:
        pass

    try:
        elem = driver.find_element_by_css_selector('.dl-modal-body-normal')

        # doctolib was out of sync, the slot didn't really exist
        if "Bitte wählen Sie einen neuen Termin aus." in elem.text:
            return True

        if "Es ist während der Terminvereinbarung ein Fehler aufgetreten." in elem.text:
            return True
    except NoSuchElementException:
        pass

    return False


def can_progress_because_element_available(css_selector, multiple_elements=False, callback=None):
    for _ in range(10):
        if has_warning_message():
            return False
        try:
            if multiple_elements:
                elem = driver.find_elements_by_css_selector(css_selector)[0]
            else:
                elem = driver.find_element_by_css_selector(css_selector)

            if callback is None:
                elem.click()
                return True
            elif callback(elem):
                elem.click()
                return True
        except (NoSuchElementException, IndexError):
            sleep(waiting_secs)
        except ElementClickInterceptedException:
            continue
    return False


def validate_time(elem):
    txt = elem.text
    txt = txt.replace('Nächster Termin am ', '').replace(' Mai ', '05.').replace(' Juni ', '06.').replace(' Juli ', '07.').replace('August ', '08.')
    txt = txt.replace(' ', '')
    if not len(txt) == 10:
        txt = '0' + txt
    if datetime.strptime(txt, '%d.%m.%Y') <= ref_date:
        return True
    print(f'Found slot, but after requested date: {txt}.')
    return False


while slot is None:

    # we alternate between moderna and biontech selection every round to make things easier
    current_vaccine = 'biontech' if current_vaccine == 'moderna' else 'moderna'

    for url in urls:
        print(f'Checking slots for {url} ...')
        driver.get(url)
        sleep(waiting_secs)

        try:
            driver.find_element_by_id('didomi-notice-agree-button').click()
        except NoSuchElementException:
            pass

        try:
            driver.find_element_by_css_selector('.dl-select-block').click()

            options = driver.find_elements_by_css_selector('.dl-select-block option')

            is_moderna_only = False
            for option in options:
                if option.text == 'Wählen sie den Besuchsgrund':
                    continue
                if 'astra' in option.text.lower():
                    is_moderna_only = True
                elif current_vaccine in option.text.lower():
                    option.click()
                    break
                elif is_moderna_only and 'moderna' in option.text.lower():
                    option.click()

        except NoSuchElementException:
            pass

        if not can_progress_because_element_available('.availabilities-message span', callback=validate_time):
            continue

        if not can_progress_because_element_available('.availabilities-next-slot', multiple_elements=True):
            continue

        slot = url
        break

notify('New slots available!', 'Get your slot now!')
print(f'Available slots in {slot}.')