"""Core initial schema: users table

Revision ID: 0001_core_initial
Revises:
Create Date: 2026-03-16
"""
from typing import Sequence, Union
from alembic import op
import sqlalchemy as sa

revision: str = "0001_core_initial"
down_revision: Union[str, None] = None
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "users",
        sa.Column("id", sa.String(36), primary_key=True),
        sa.Column("username", sa.String(64), nullable=False, unique=True),
        sa.Column("email", sa.String(255), nullable=False, unique=True),
        sa.Column("password_hash", sa.String(255), nullable=False),
        sa.Column(
            "role",
            sa.Enum("admin", "operator", "viewer", name="userrole"),
            nullable=False,
        ),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("is_active", sa.Boolean, nullable=False, default=True),
    )


def downgrade() -> None:
    op.drop_table("users")
    op.execute("DROP TYPE IF EXISTS userrole")