"""per-section message classifications

Revision ID: 0012
Revises: 0011
Create Date: 2026-06-11

"""
from typing import Sequence, Union

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

revision: str = "0012"
down_revision: Union[str, None] = "0011"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "message_classifications",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column("message_id", sa.Integer(), sa.ForeignKey("messages.id", ondelete="CASCADE"), nullable=False),
        sa.Column("section_id", sa.Integer(), sa.ForeignKey("sections.id", ondelete="CASCADE"), nullable=False),
        sa.Column("vertical", sa.String(length=32), nullable=False),
        sa.Column("verdict", postgresql.JSONB(astext_type=sa.Text()), nullable=False),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
        sa.UniqueConstraint("message_id", "section_id", name="uq_message_classification_section"),
    )
    op.create_index("ix_message_classifications_message", "message_classifications", ["message_id"])
    op.create_index("ix_message_classifications_section", "message_classifications", ["section_id"])


def downgrade() -> None:
    op.drop_index("ix_message_classifications_section", table_name="message_classifications")
    op.drop_index("ix_message_classifications_message", table_name="message_classifications")
    op.drop_table("message_classifications")