Bot for checking earliest available slots at met.overseasregistrations.uk

watch.py

# pip3 install requests
import requests
from datetime import datetime, timedelta
import re
import sys
import webbrowser
import time
import urllib3.exceptions
import requests.exceptions

# Get one from @botfather
TELEGRAM_BOT_TOKEN = ''
# You could get your chat id from @userinfobot
TELEGRAM_CHAT_ID = 0

# Browser cookies after authorization at met.overseasregistrations.uk
cookies = {
    'cookieAccepted': 'true',
    '__RequestVerificationToken': '',
    'ASP.NET_SessionId': '',
    'FNFEAuth': '',
}

default_headers = {
    'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.106 Safari/537.36',
}

def exit(e):
    requests.post(
        f"https://api.telegram.org/bot{TELEGRAM_BOT_TOKEN}/sendMessage",
        json={"chat_id": TELEGRAM_CHAT_ID, "text": "OVRO bot failed, sorry..."}
    )
    raise e


s = requests.Session()
min_dt = None
today = datetime.now().replace(microsecond=0, second=0, minute=0)
selected_date = today.strftime("%Y-%m-%dT%H:%M:%S.000Z")

while True:
    print("Start cycle...")
    try:
        r = s.get(
            "https://met.overseasregistrations.uk/Appointment/Book",
            cookies=cookies, headers=default_headers,
            timeout=10
        )
        venues = re.findall(r'option value="(.*?)" data-location="(.*?)"', r.text)

        for venue in venues:
            venue_id = venue[0]
            venue_name = venue[1]
            
            r = s.post(
                'https://met.overseasregistrations.uk/Appointment/GetNextAppointments',
                cookies=cookies, headers=default_headers,
                timeout=10,
                json={'schedulerView': 'Week', 'selectedDate': selected_date, 'venueId': venue_id}
            )
            data = r.json()
            appointments = data['sData']['SchedulerItems']
            for appointment in appointments:
                ts = int(re.sub(r'\D', '', appointment['Start'])) // 1000
                dt = datetime.utcfromtimestamp(ts)
                if min_dt is None or dt < min_dt:

                    notification_text = f"Found earlier OVRO appointment: {dt:%Y-%m-%d}, venue: {venue_name}\n"

                    requests.post(
                        f"https://api.telegram.org/bot{TELEGRAM_BOT_TOKEN}/sendMessage",
                        json={"chat_id": TELEGRAM_CHAT_ID, "text": notification_text}
                    )

                    print(notification_text)
                    min_dt = dt
    except (urllib3.exceptions.TimeoutError, requests.exceptions.Timeout):
        print("Timeout...")
        time.sleep(60)
    except Exception as e:
        exit(e)

    time.sleep(10)