remove content from communities according to retention setting #254

app/cli.py

@@ -23,7 +23,7 @@ from app.constants import NOTIF_COMMUNITY, NOTIF_POST, NOTIF_REPLY
 from app.email import send_verification_email, send_email
 from app.models import Settings, BannedInstances, Interest, Role, User, RolePermission, Domain, ActivityPubLog, \
     utcnow, Site, Instance, File, Notification, Post, CommunityMember, NotificationSubscription, PostReply, Language, \
-    Tag, InstanceRole
+    Tag, InstanceRole, Community
 from app.utils import file_get_contents, retrieve_block_list, blocked_domains, retrieve_peertube_block_list, \
     shorten_string, get_request, html_to_text, blocked_communities
 
@@ -171,6 +171,15 @@ def register(app):
     @app.cli.command('daily-maintenance')
     def daily_maintenance():
         with app.app_context():
+            # Remove old content from communities
+            communities = Community.query.filter(Community.content_retention > 0).all()
+            for community in communities:
+                cut_off = utcnow() - timedelta(days=community.content_retention)
+                db.session.execute(text('UPDATE "post" SET deleted = true WHERE posted_at < :cut_off AND community_id = :community_id'), {
+                    'cut_off': cut_off,
+                    'community_id': community.id
+                })
+
             # Remove activity older than 3 days
             db.session.query(ActivityPubLog).filter(ActivityPubLog.created_at < utcnow() - timedelta(days=3)).delete()
             db.session.commit()
@@ -280,6 +289,7 @@ def register(app):
                 db.session.delete(post_reply)
 
             for post in Post.query.filter(Post.deleted == True, Post.posted_at < utcnow() - timedelta(days=7)).all():
+                post.delete_dependencies()
                 db.session.delete(post)
 
             db.session.commit()

app/models.py

@@ -343,8 +343,6 @@ class Topic(db.Model):
         return existing_notification is not None
 
 
-
-
 class Community(db.Model):
     query_class = FullTextSearchQuery
     id = db.Column(db.Integer, primary_key=True)
@@ -573,7 +571,6 @@ class Community(db.Model):
         db.session.query(Report).filter(Report.suspect_community_id == self.id).delete()
 
 
-
 user_role = db.Table('user_role',
     db.Column('user_id', db.Integer, db.ForeignKey('user.id')),
     db.Column('role_id', db.Integer, db.ForeignKey('role.id')),