"""Пользователь: настройки витрины истории партий в профиле.

Идемпотентна: на свежей БД столбцы создаёт 0001 (create_all из актуальных моделей) -> no-op;
на существующей БД добавляет столбцы. render_as_batch включён в env.py (для SQLite).

Revision ID: 0011_user_history_prefs
Revises: 0010_user_favorite_faction
Create Date: 2026-09-07
"""
from typing import Sequence, Union

import sqlalchemy as sa
from sqlalchemy import inspect

from alembic import op

revision: str = "0011_user_history_prefs"
down_revision: Union[str, None] = "0010_user_favorite_faction"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    bind = op.get_bind()
    insp = inspect(bind)
    cols = {c["name"] for c in insp.get_columns("users")}
    with op.batch_alter_table("users") as b:
        if "history_mode" not in cols:
            b.add_column(
                sa.Column(
                    "history_mode", sa.String(8), nullable=False, server_default="all"
                )
            )
        if "history_detail" not in cols:
            b.add_column(
                sa.Column(
                    "history_detail", sa.String(8), nullable=False, server_default="compact"
                )
            )


def downgrade() -> None:
    bind = op.get_bind()
    insp = inspect(bind)
    cols = {c["name"] for c in insp.get_columns("users")}
    with op.batch_alter_table("users") as b:
        if "history_detail" in cols:
            b.drop_column("history_detail")
        if "history_mode" in cols:
            b.drop_column("history_mode")