Merge pull request 'garbage-collection' (#31) from garbage-collection into testing

Reviewed-on: #31

app/cleanup_events.py

@@ -0,0 +1,16 @@
+from datetime import datetime, timedelta
+
+def cleanupEvents(db, Event):
+    # calculate the date one month ago
+    one_month_ago = datetime.now() - timedelta(days=30)
+
+    # get events older than one month
+    old_events = db.session.query(Event).filter(
+        db.func.STR_TO_DATE(Event.scheduled_date, '%m-%d-%Y') < one_month_ago.date()
+    ).all()
+
+    # delete old events
+    for event in old_events:
+        db.session.delete(event)
+
+    db.session.commit()

app/worker.py

@@ -1,6 +1,7 @@
 from celery import Celery
 from celery.schedules import crontab
 from create_events import createEvents
+from cleanup_events import cleanupEvents
 import os
 from flask import Flask
 from misc import currDay, datetime, time, timedelta
@@ -32,11 +33,20 @@ def runCreateEvents():
     with app.app_context():
         createEvents(db, currDay, Period, Event)
 
+def runCleanupEvents():
+    with app.app_context():
+        cleanupEvents(db, Event)
+
 # Scheduled tasks
 celerymsg.conf.beat_schedule = {
     'hourly-createevents': {
         'task': 'worker.runCreateEvents',
         # Run hourly
         'schedule': crontab(hour="*", minute="59"),
+    },
+    'monthly-cleanupevents': {
+        'task': 'worker.runCleanupEvents',
+        # Run monthly
+        'schedule': crontab(day_of_month="29")
     }
 }