"""add material_equipments table

Revision ID: 20260227_01
Revises: 20260213_03
Create Date: 2026-02-27 10:30:00.000000

"""
from typing import Sequence, Union

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


# revision identifiers, used by Alembic.
revision: str = "20260227_01"
down_revision: Union[str, None] = "20260213_03"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    bind = op.get_bind()
    inspector = sa.inspect(bind)

    if "material_equipments" not in inspector.get_table_names():
        op.create_table(
            "material_equipments",
            sa.Column("id", postgresql.UUID(as_uuid=True), nullable=False),
            sa.Column("study_id", postgresql.UUID(as_uuid=True), nullable=False),
            sa.Column("name", sa.String(length=255), nullable=False),
            sa.Column("spec_model", sa.String(length=255), nullable=False),
            sa.Column("unit", sa.String(length=50), nullable=True),
            sa.Column("brand", sa.String(length=100), nullable=False),
            sa.Column("origin", sa.String(length=255), nullable=True),
            sa.Column("production_permit_file_name", sa.String(length=255), nullable=True),
            sa.Column("tech_index_file_name", sa.String(length=255), nullable=True),
            sa.Column("need_calibration", sa.Boolean(), nullable=False, server_default=sa.text("false")),
            sa.Column("calibration_cycle_days", sa.Integer(), nullable=True),
            sa.Column("created_by", postgresql.UUID(as_uuid=True), nullable=True),
            sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("now()"), nullable=False),
            sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("now()"), nullable=False),
            sa.ForeignKeyConstraint(["study_id"], ["studies.id"]),
            sa.ForeignKeyConstraint(["created_by"], ["users.id"]),
            sa.PrimaryKeyConstraint("id"),
        )

    indexes = {idx["name"] for idx in inspector.get_indexes("material_equipments")}
    index_name = op.f("ix_material_equipments_study_id")
    if index_name not in indexes:
        op.create_index(index_name, "material_equipments", ["study_id"], unique=False)


def downgrade() -> None:
    bind = op.get_bind()
    inspector = sa.inspect(bind)

    if "material_equipments" in inspector.get_table_names():
        indexes = {idx["name"] for idx in inspector.get_indexes("material_equipments")}
        index_name = op.f("ix_material_equipments_study_id")
        if index_name in indexes:
            op.drop_index(index_name, table_name="material_equipments")
        op.drop_table("material_equipments")