"""add holidays table

Revision ID: h1h2h3h4h5h6
Revises: g1h2i3j4k5l6
Create Date: 2026-08-28 12:00:00.000000

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


revision: str = 'h1h2h3h4h5h6'
down_revision: Union[str, Sequence[str], None] = 'g1h2i3j4k5l6'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        'holidays',
        sa.Column('id', sa.Integer(), autoincrement=True, primary_key=True),
        sa.Column('day', sa.Date(), nullable=False, comment='放假日期'),
        sa.Column('name', sa.String(length=100), nullable=True, comment='放假说明（如国庆节）'),
    )
    op.create_index('ix_holidays_day', 'holidays', ['day'], unique=True)


def downgrade() -> None:
    op.drop_index('ix_holidays_day', table_name='holidays')
    op.drop_table('holidays')