nexus_appointments.py

import time
from twilio.rest import Client
import requests
from dateutil import parser

# Create client
account_sid = 'xxx'  # Grab from Twilio
auth_token = 'xxx'  # Grab from Twilio
client = Client(account_sid, auth_token)

def notify(message):
    print(message)
    message = client.messages.create(
        body=message,
        from_='+1xxxxxxxxx',  # Grab from Twilio (e.g. +12061231231)
        to='+1xxxxxxxxx'  # Insert your own phone number (e.g. +12067897897)
    )


# The last appointment that we've notified about, to prevent duplicate notifications
prev_start = None

def check():
    global prev_start

    # Check if any appointments are available, and if so, notify

    # use Blaine
    resp = requests.get('https://ttp.cbp.dhs.gov/schedulerapi/slots?orderBy=soonest&limit=1&locationId=5020&minimum=1')
    if not resp.ok:
        notify(f'Failed with status code {resp.status_code}')
        return True
    appts = resp.json()
    if len(appts) > 0:
        appt = appts[0]
        # start in the future, look backwards
        start = appt.get('startTimestamp', '2099-01-01T00:00')
        # Prevent duplicates
        if start != prev_start:
            print(f'Found appt on {start}')
            prev_start = start
            date = parser.parse(start)
            if date.year == 2024:
                notify(f'Found appointment on {start}')
        return False

while True:
    if check():
        # Wait for 15 mins after error
        time.sleep(60*15)
    else:
        # Wait 1 min otherwise, better to keep this fast b/c all the other scraping services do too
        time.sleep(60)