"""add iso_threads and unc_threads tables

Revision ID: 627d4460a94f
Revises: 0001_initial
Create Date: 2026-06-24 21:50:05.340235
"""

from collections.abc import Sequence

import sqlalchemy as sa

from alembic import op

revision: str = "627d4460a94f"
down_revision: str | None = "0001_initial"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "iso_threads",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column("diameter_mm", sa.Float(), nullable=False),
        sa.Column("pitch_mm", sa.Float(), nullable=False),
        sa.Column("depth_mm", sa.Float(), nullable=True),
    )

    op.create_table(
        "unc_threads",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column("diameter_fraction", sa.String(length=16), nullable=False),
        sa.Column("tpi", sa.Integer(), nullable=False),
        sa.Column("series", sa.String(length=8), nullable=False),
        sa.Column("depth_in", sa.Float(), nullable=True),
    )


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