"""球队别名表 team_aliases

Revision ID: 0020_team_aliases
Revises: 0019_ingest_jobs
Create Date: 2026-09-22
"""

from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa

revision: str = '0020_team_aliases'
down_revision: Union[str, None] = '0019_ingest_jobs'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        'team_aliases',
        sa.Column('alias_normalized', sa.String(120), primary_key=True),
        sa.Column('team_id', sa.Integer, sa.ForeignKey('teams.id', ondelete='CASCADE'), nullable=False),
        sa.Column('original_alias', sa.String(120), nullable=False),
        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.func.now()),
    )
    op.create_index('ix_team_aliases_team_id', 'team_aliases', ['team_id'])


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