"""add ai agent process tracking

Revision ID: de11b016b35a
Revises: 1a2cda4df181
Create Date: 2025-09-03 00:02:24.263636

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = 'de11b016b35a'
down_revision: Union[str, Sequence[str], None] = '1a2cda4df181'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # Add AI agent process tracking columns
    op.add_column('interview_sessions', sa.Column('ai_agent_pid', sa.Integer(), nullable=True))
    op.add_column('interview_sessions', sa.Column('ai_agent_status', sa.String(), server_default='not_started', nullable=False))


def downgrade() -> None:
    """Downgrade schema."""
    # Drop AI agent process tracking columns
    op.drop_column('interview_sessions', 'ai_agent_status')
    op.drop_column('interview_sessions', 'ai_agent_pid')