"""add adj_factor table (复权因子底座)

Revision ID: 20260815_01
Revises: 208b0c5d302a
Create Date: 2026-08-15
"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


revision: str = "20260815_01"
down_revision: Union[str, Sequence[str], None] = "208b0c5d302a"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "adj_factor",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("trade_date", sa.DateTime(), nullable=False),
        sa.Column("ts_code", sa.String(length=12), nullable=False),
        sa.Column("adj_factor", sa.Float(), nullable=False),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("ts_code", "trade_date", name="uq_adj_code_date"),
    )
    op.create_index("ix_adj_factor_trade_date", "adj_factor", ["trade_date"])
    op.create_index("ix_adj_factor_ts_code", "adj_factor", ["ts_code"])


def downgrade() -> None:
    op.drop_index("ix_adj_factor_ts_code", table_name="adj_factor")
    op.drop_index("ix_adj_factor_trade_date", table_name="adj_factor")
    op.drop_table("adj_factor")