app.py

import requests
import datetime
import json
import pandas as pd
import smtplib
from email.message import EmailMessage
import time
import os

# Rajasthan state_code = 29
# District code: 
# Jaipur I: 505
# Jaipur II: 506

DIST_IDS = {505: 'Jaipur I', 506: 'Jaipur II'}
numdays = 20
age = 23

SENDER_EMAIL = os.environ['SENDER_ID'] + '@gmail.com'
SENDER_PASSWORD = os.environ["SENDER_PWD"]
REC_EMAIL = os.environ["REC_ID"] + '@gmail.com'


if __name__ == "__main__":
	server = smtplib.SMTP_SSL("smtp.gmail.com", 465)
	server.login(SENDER_EMAIL, SENDER_PASSWORD)
	i = 0
	while True:
		print(f"Checking: {i}")
		if i % 100 == 0:
			server = smtplib.SMTP_SSL("smtp.gmail.com", 465)
			server.login(SENDER_EMAIL, SENDER_PASSWORD)
			base = datetime.datetime.today()
			date_list = [base + datetime.timedelta(days=x) for x in range(numdays)]
			date_str = [x.strftime("%d-%m-%Y") for x in date_list]
		for DIST_ID in DIST_IDS:
			for INP_DATE in date_str:
					URL = "https://cdn-api.co-vin.in/api/v2/appointment/sessions/public/calendarByDistrict?district_id={}&date={}".format(DIST_ID, INP_DATE)
					response = requests.get(URL)
					if response.ok:
						resp_json = response.json()
						if resp_json["centers"]:
							for center in resp_json["centers"]:
								for session in center["sessions"]:
									if session["min_age_limit"] <= age:
										if session["available_capacity"] > 0:   
											text =  center["name"] + "\n Price:" + center["fee_type"] + "\n Available Capacity: "  + str(session["available_capacity"]) + "\nVaccine:" + session["vaccine"]
											message = 'Subject: {}\n\n{}'.format("Availabie Vaccine!", text)
											server.sendmail(SENDER_EMAIL, 
															REC_EMAIL, 
															message
															)
											print("\t", center["name"])
											print("\t", center["block_name"])
											print("\t Price: ", center["fee_type"])
											print("\t Available Capacity: ", session["available_capacity"])
											print(type(session["available_capacity"]))
											if(session["vaccine"] != ''):
												print("\t Vaccine: ", session["vaccine"])
											print("\n\n")
			i += 1
		time.sleep(30)
		if i % 100 == 0:
			server.quit()