PMFlow/backend/alembic/versions/20260326_add_task_breakdown...

62 lines
1.8 KiB
Python

"""add task breakdown payload fields
Revision ID: 20260326_add_task_breakdown_payload_fields
Revises: add_project_create_idempotency_indexes
Create Date: 2026-03-26
"""
from __future__ import annotations
from alembic import op
import sqlalchemy as sa
try:
from sqlalchemy.dialects.postgresql import JSONB
except Exception: # pragma: no cover
JSONB = sa.JSON
revision = "20260326_add_task_breakdown_payload_fields"
down_revision = "add_project_create_idempotency_indexes"
branch_labels = None
depends_on = None
def _json_type(bind):
return JSONB() if bind.dialect.name == "postgresql" else sa.JSON()
def _table_exists(bind, table_name: str) -> bool:
return sa.inspect(bind).has_table(table_name)
def _column_exists(bind, table_name: str, column_name: str) -> bool:
inspector = sa.inspect(bind)
if not inspector.has_table(table_name):
return False
return any(str(item.get("name") or "") == column_name for item in inspector.get_columns(table_name))
def upgrade() -> None:
bind = op.get_bind()
table_name = "tasks"
if not _table_exists(bind, table_name):
return
if not _column_exists(bind, table_name, "ai_breakdown_payload"):
op.add_column(table_name, sa.Column("ai_breakdown_payload", _json_type(bind), nullable=True))
if not _column_exists(bind, table_name, "manual_overrides"):
op.add_column(table_name, sa.Column("manual_overrides", _json_type(bind), nullable=True))
def downgrade() -> None:
bind = op.get_bind()
table_name = "tasks"
if not _table_exists(bind, table_name):
return
if _column_exists(bind, table_name, "manual_overrides"):
op.drop_column(table_name, "manual_overrides")
if _column_exists(bind, table_name, "ai_breakdown_payload"):
op.drop_column(table_name, "ai_breakdown_payload")