from datetime import datetime, timedelta
import sys
import os

from flask import Flask
from apscheduler.schedulers.background import BackgroundScheduler
app = Flask(__name__)


scheduler = BackgroundScheduler()

def alarm():
    print('Alarm! This alarm was scheduled')

def hello_el():
    print("Hey, El! Get shit done!")

@app.route('/')
def hello_world():
    scheduler.add_job(hello_el, 'interval', seconds=2)
    return 'Hello World!'

if __name__ == '__main__':
    url = 'sqlite:///hello.sqlite3'
    scheduler.add_jobstore('sqlalchemy', url=url)
    alarm_time = datetime.now() + timedelta(seconds=10)
    scheduler.add_job(alarm, 'interval', seconds=3)
    print('To clear the alarms, delete the example.sqlite file.')
    print('Press Ctrl+{0} to exit'.format('Break' if os.name == 'nt' else 'C'))

    try:
        scheduler.start()
        app.run(host='localhost')
    except (KeyboardInterrupt, SystemExit):
        print("You want to stop the progrm.")