Event-CRUD-Flask-python3-API/services/EventNotifyerService.py

# this Class is for the scheduler
#this class will have a function that locates the upcomming events Using the Event service.
from services.EventService import EventService
from services.UserService import UserService
from models import UserEventAssociation, db

class EventNotifyerService:
  def __init__(self):
    pass
  
  def notifyUpcommingEvents():
    # this method will get the upcoming events from the event service
    # foreach event, locate the users with the same location as the event but not the users that already been notifyed about the event
    # foreach user, append to UserEventAssociation table that the user is been notified about the event
    events = EventService.get_upcoming_events()
    for event in events:
      # locate users with the same location as the event but not the users that already been notifyed about the event (users with UserEventAssociation)
      users = UserService.get_users_with_same_location_but_not_been_notifyed(event['location'])
      if not users:
        print("No user to notify")
        continue
      for user in users:
        print("Found user to notify:", user)
        if notify_user(user['email'], event):
          user_event_association = UserEventAssociation(
              user_id=user['id'],
              event_id=event['id']
          )
          db.session.add(user_event_association)
          db.session.commit()

  
def notify_user(userEmail, event):
  # send email to user is the email been sent, return true; otherwise, return false
  return True