"""add optical_power_history table

Revision ID: l1m2n3o4p5q6
Revises: k0l1m2n3o4p5
Create Date: 2026-06-03 11:00:00.000000

"""
from typing import Sequence, Union
from alembic import op
import sqlalchemy as sa

revision: str = 'l1m2n3o4p5q6'
down_revision: Union[str, None] = 'k0l1m2n3o4p5'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table('optical_power_history',
        sa.Column('id', sa.BigInteger(), nullable=False),
        sa.Column('onu_device_id', sa.BigInteger(), sa.ForeignKey('onu_devices.id'), nullable=False),
        sa.Column('power_in', sa.String(20), nullable=True),
        sa.Column('power_out', sa.String(20), nullable=True),
        sa.Column('recorded_at', sa.TIMESTAMP(), server_default=sa.text('now()'), nullable=False),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index('ix_optical_power_history_id', 'optical_power_history', ['id'])
    op.create_index('ix_optical_power_history_onu_device_id', 'optical_power_history', ['onu_device_id'])


def downgrade() -> None:
    op.drop_index('ix_optical_power_history_onu_device_id', table_name='optical_power_history')
    op.drop_index('ix_optical_power_history_id', table_name='optical_power_history')
    op.drop_table('optical_power_history')