"""indicator_summaries — short AI-generated read per indicator group

Revision ID: 0004
Revises: 0003
Create Date: 2026-05-15
"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op


revision: str = "0004"
down_revision: Union[str, None] = "0003"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "indicator_summaries",
        sa.Column("id", sa.BigInteger, primary_key=True, autoincrement=True),
        sa.Column("group_name", sa.String(64), nullable=False),
        sa.Column("generated_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("model", sa.String(64), nullable=False),
        sa.Column("tone", sa.String(16)),
        sa.Column("analysis", sa.String(16)),
        sa.Column("prompt_version", sa.Integer, nullable=False, server_default=sa.text("1")),
        sa.Column("content", sa.Text, nullable=False),
        sa.Column("prompt_tokens", sa.Integer),
        sa.Column("completion_tokens", sa.Integer),
        sa.Column("cost_usd", sa.Float),
    )
    op.create_index(
        "ix_indsumm_group_generated",
        "indicator_summaries",
        ["group_name", "generated_at"],
    )


def downgrade() -> None:
    op.drop_index("ix_indsumm_group_generated", table_name="indicator_summaries")
    op.drop_table("indicator_summaries")