"""add input_duration_ms to measurements

Revision ID: 004_input_duration
Revises: 003_measurement_interval
Create Date: 2026-07-28

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa

revision: str = '004_input_duration'
down_revision: Union[str, None] = '003_measurement_interval'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.add_column(
        'measurements',
        sa.Column('input_duration_ms', sa.Integer, nullable=True),
    )


def downgrade() -> None:
    op.drop_column('measurements', 'input_duration_ms')