"""Add target_asset / category / expected_move_pct to posts (v5 routing)

Revision ID: 006
Revises: 005
Create Date: 2026-05-08 00:00:00.000000

The v5 AI prompt outputs not just signal direction but also which specific
perp to trade (could be BTC/ETH/SOL/TRUMP/anything on Hyperliquid). The
bot reads `target_asset` to route the trade. `price_impact_asset` stays
bound to BTC/ETH for the existing price_impact_monitor.
"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "006"
down_revision: Union[str, None] = "005"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    with op.batch_alter_table("posts") as batch_op:
        batch_op.add_column(sa.Column("target_asset", sa.String(16), nullable=True))
        batch_op.add_column(sa.Column("category", sa.String(24), nullable=True))
        batch_op.add_column(sa.Column("expected_move_pct", sa.Float(), nullable=True))


def downgrade() -> None:
    with op.batch_alter_table("posts") as batch_op:
        batch_op.drop_column("expected_move_pct")
        batch_op.drop_column("category")
        batch_op.drop_column("target_asset")