"""202602281918

Revision ID: 4bf27c66ae63
Revises: 7672d8f0f939
Create Date: 2026-02-28 19:18:38.332468

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = '4bf27c66ae63'
down_revision: Union[str, None] = '7672d8f0f939'
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! ###
    # Add columns as nullable first
    op.add_column('ontology_class', sa.Column('is_system_default', sa.Boolean(), nullable=True, comment='是否为系统默认类型'))
    op.add_column('ontology_scene', sa.Column('is_system_default', sa.Boolean(), nullable=True, comment='是否为系统默认场景'))
    
    # Set default value for existing rows
    op.execute("UPDATE ontology_class SET is_system_default = false WHERE is_system_default IS NULL")
    op.execute("UPDATE ontology_scene SET is_system_default = false WHERE is_system_default IS NULL")
    
    # Now make columns NOT NULL
    op.alter_column('ontology_class', 'is_system_default', nullable=False)
    op.alter_column('ontology_scene', 'is_system_default', nullable=False)
    
    op.create_index(op.f('ix_ontology_scene_is_system_default'), 'ontology_scene', ['is_system_default'], unique=False)
    # ### end Alembic commands ###


def downgrade() -> None:
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_index(op.f('ix_ontology_scene_is_system_default'), table_name='ontology_scene')
    op.drop_column('ontology_scene', 'is_system_default')
    op.drop_column('ontology_class', 'is_system_default')
    # ### end Alembic commands ###