"""holding_items：持仓股（手动标记进「持仓」分类）

Revision ID: 20260909_01
Revises: 20260907_02
Create Date: 2026-09-09
"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "20260909_01"
down_revision: Union[str, Sequence[str], None] = "20260907_02"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "holding_items",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("user_id", sa.BigInteger(), nullable=False),
        sa.Column("ts_code", sa.String(length=12), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("user_id", "ts_code", name="uq_holding_user_code"),
    )
    op.create_index("ix_holding_items_user_id", "holding_items", ["user_id"])
    op.create_index("ix_holding_items_ts_code", "holding_items", ["ts_code"])


def downgrade() -> None:
    op.drop_index("ix_holding_items_ts_code", table_name="holding_items")
    op.drop_index("ix_holding_items_user_id", table_name="holding_items")
    op.drop_table("holding_items")