Add Electric SQL replication for messages and comments

surfsense_backend/alembic/versions/74_add_messages_comments_electric_replication.py

@@ -0,0 +1,94 @@
+"""Add new_chat_messages and chat_comments to Electric SQL publication
+
+Revision ID: 74
+Revises: 73
+
+Enables real-time sync for chat messages and comments via Electric SQL.
+"""
+
+from collections.abc import Sequence
+
+from alembic import op
+
+revision: str = "74"
+down_revision: str | None = "73"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    """Add new_chat_messages and chat_comments to Electric SQL replication."""
+    # Set REPLICA IDENTITY FULL for Electric SQL sync
+    op.execute("ALTER TABLE new_chat_messages REPLICA IDENTITY FULL;")
+    op.execute("ALTER TABLE chat_comments REPLICA IDENTITY FULL;")
+
+    # Add new_chat_messages to Electric publication
+    op.execute(
+        """
+        DO $$
+        BEGIN
+            IF NOT EXISTS (
+                SELECT 1 FROM pg_publication_tables 
+                WHERE pubname = 'electric_publication_default' 
+                AND tablename = 'new_chat_messages'
+            ) THEN
+                ALTER PUBLICATION electric_publication_default ADD TABLE new_chat_messages;
+            END IF;
+        END
+        $$;
+        """
+    )
+
+    # Add chat_comments to Electric publication
+    op.execute(
+        """
+        DO $$
+        BEGIN
+            IF NOT EXISTS (
+                SELECT 1 FROM pg_publication_tables 
+                WHERE pubname = 'electric_publication_default' 
+                AND tablename = 'chat_comments'
+            ) THEN
+                ALTER PUBLICATION electric_publication_default ADD TABLE chat_comments;
+            END IF;
+        END
+        $$;
+        """
+    )
+
+
+def downgrade() -> None:
+    """Remove new_chat_messages and chat_comments from Electric SQL replication."""
+    op.execute(
+        """
+        DO $$
+        BEGIN
+            IF EXISTS (
+                SELECT 1 FROM pg_publication_tables 
+                WHERE pubname = 'electric_publication_default' 
+                AND tablename = 'new_chat_messages'
+            ) THEN
+                ALTER PUBLICATION electric_publication_default DROP TABLE new_chat_messages;
+            END IF;
+        END
+        $$;
+        """
+    )
+
+    op.execute(
+        """
+        DO $$
+        BEGIN
+            IF EXISTS (
+                SELECT 1 FROM pg_publication_tables 
+                WHERE pubname = 'electric_publication_default' 
+                AND tablename = 'chat_comments'
+            ) THEN
+                ALTER PUBLICATION electric_publication_default DROP TABLE chat_comments;
+            END IF;
+        END
+        $$;
+        """
+    )
+
+    # Note: Not reverting REPLICA IDENTITY as it doesn't harm normal operations