Fixed last seen issue

alembic/versions/20251208_0007_0b944542ccd8_make_node_last_seen_nullable.py

@@ -0,0 +1,39 @@
+"""Make Node.last_seen nullable
+
+Revision ID: 0b944542ccd8
+Revises: 005
+Create Date: 2025-12-08 00:07:49.891245+00:00
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "0b944542ccd8"
+down_revision: Union[str, None] = "005"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    # Make Node.last_seen nullable since nodes from contact sync
+    # haven't actually been "seen" on the mesh yet
+    with op.batch_alter_table("nodes", schema=None) as batch_op:
+        batch_op.alter_column("last_seen", existing_type=sa.DATETIME(), nullable=True)
+
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    # Revert Node.last_seen to non-nullable
+    # Note: This will fail if there are NULL values in last_seen
+    with op.batch_alter_table("nodes", schema=None) as batch_op:
+        batch_op.alter_column("last_seen", existing_type=sa.DATETIME(), nullable=False)
+
+    # ### end Alembic commands ###