"""add drug index

Revision ID: 058739dc7aa6
Revises: c509dcf806d4
Create Date: 2025-08-07 20:30:35.962671

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = '058739dc7aa6'
down_revision: Union[str, Sequence[str], None] = 'c509dcf806d4'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    with op.batch_alter_table('drugs', schema=None) as batch_op:
        batch_op.create_index('ix_drugs_name_dosage_dosage_unit', ['name', 'dosage', 'dosage_unit'], unique=True)

    # ### end Alembic commands ###


def downgrade() -> None:
    """Downgrade schema."""
    # ### commands auto generated by Alembic - please adjust! ###
    with op.batch_alter_table('drugs', schema=None) as batch_op:
        batch_op.drop_index('ix_drugs_name_dosage_dosage_unit')

    # ### end Alembic commands ###