"""selection_snapshot / selection_result 表（M6.3 选股落库）

Revision ID: a6c91d4e7f20
Revises: d3f6c9a21b04
Create Date: 2026-09-08

"""

from __future__ import annotations

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op

revision: str = "a6c91d4e7f20"
down_revision: str | None = "d3f6c9a21b04"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "selection_snapshot",
        sa.Column("id", sa.String(length=32), nullable=False),
        sa.Column("as_of", sa.Date(), nullable=False),
        sa.Column("method", sa.String(length=16), nullable=False),
        sa.Column("query_json", sa.Text(), nullable=False),
        sa.Column("statistics_json", sa.Text(), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index("ix_selection_snapshot_as_of", "selection_snapshot", ["as_of"])
    op.create_index("ix_selection_snapshot_created_at", "selection_snapshot", ["created_at"])

    op.create_table(
        "selection_result",
        sa.Column(
            "id",
            sa.BigInteger().with_variant(sa.Integer(), "sqlite"),
            autoincrement=True,
            nullable=False,
        ),
        sa.Column("selection_id", sa.String(length=32), nullable=False),
        sa.Column("symbol", sa.String(length=12), nullable=False),
        sa.Column("rank", sa.Integer(), nullable=False),
        sa.Column("score", sa.Numeric(precision=14, scale=6), nullable=False),
        sa.Column("factor_values_json", sa.Text(), nullable=True),
        sa.Column("filter_status_json", sa.Text(), nullable=True),
        sa.Column("reason_json", sa.Text(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index("ix_selection_result_selection_id", "selection_result", ["selection_id"])


def downgrade() -> None:
    op.drop_index("ix_selection_result_selection_id", table_name="selection_result")
    op.drop_table("selection_result")
    op.drop_index("ix_selection_snapshot_created_at", table_name="selection_snapshot")
    op.drop_index("ix_selection_snapshot_as_of", table_name="selection_snapshot")
    op.drop_table("selection_snapshot")