"""key/value store for runtime-editable settings (LLM prompt, etc.)

Revision ID: 0006
Revises: 0005
Create Date: 2026-05-06

"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op
from sqlalchemy.dialects import postgresql

revision: str = "0006"
down_revision: Union[str, None] = "0005"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "app_settings",
        sa.Column("key", sa.String(length=64), primary_key=True),
        sa.Column("value", postgresql.JSONB(), nullable=False),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.func.now(),
        ),
    )


def downgrade() -> None:
    op.drop_table("app_settings")