Remove data for old links

app/func/remove_old_data.py

@@ -0,0 +1,23 @@
+import sqlalchemy
+import datetime
+
+from db import engine
+
+"""
+Remove all links and associated records when the expire date has passed
+"""
+def remove_old_data():
+    with engine.begin() as conn:
+        today = datetime.datetime.date(datetime.datetime.now())
+        old_links = conn.execute(sqlalchemy.text('SELECT link FROM links WHERE expire_date < :today'), [{'today': today}])
+
+    delete_links = []
+
+    for row in old_links:
+        link = row.link
+        delete_links.append({'link': link})
+
+    with engine.begin() as conn:
+        conn.execute(sqlalchemy.text('DELETE FROM links WHERE link = :link'), delete_links)
+        conn.execute(sqlalchemy.text('DELETE FROM records WHERE link = :link'), delete_links)
+        conn.commit()