#!/usr/bin/env python3

from tracking import Tracking
from status import Status
from services import get_status

def run():
    for tracking in Tracking.all():
        try:
            timestamp = Status.from_database(tracking.trackingnumber).timestamp
        except ValueError:
            timestamp = None

        status = get_status(tracking.trackingnumber, tracking.service)

        if (not timestamp) or timestamp < status.timestamp:
            status.to_database()
            status.notify()