"""add shared unit-of-measure catalog

Revision ID: 20260928_units
Revises: f6a7b8c9d0e1
Create Date: 2026-09-28 00:00:00.000000

"""

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op
from sqlalchemy.dialects import postgresql

revision: str = "20260928_units"
down_revision: str | None = "f6a7b8c9d0e1"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "unit_of_measure",
        sa.Column(
            "id", postgresql.UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")
        ),
        sa.Column("name", sa.String(50), nullable=False, unique=True, index=True),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("is_system", sa.Boolean(), nullable=False, server_default=sa.text("false")),
        sa.Column("is_active", sa.Boolean(), nullable=False, server_default=sa.text("true")),
        sa.Column(
            "created_at", postgresql.TIMESTAMP(timezone=True), nullable=False, server_default=sa.text("now()")
        ),
        sa.Column(
            "updated_at", postgresql.TIMESTAMP(timezone=True), nullable=False, server_default=sa.text("now()")
        ),
    )


def downgrade() -> None:
    op.drop_table("unit_of_measure")