"""add users table (dashboard login accounts)

Revision ID: 0008
Revises: 0007
Create Date: 2026-09-20
"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = "0008"
down_revision = "0007"
branch_labels = None
depends_on = None


def upgrade() -> None:
    conn = op.get_bind()
    exists = conn.execute(sa.text(
        "SELECT 1 FROM information_schema.tables WHERE table_name='users'"
    )).fetchone()
    if exists:
        return  # create_all 로 이미 생성됨
    op.create_table(
        "users",
        sa.Column("id", sa.Integer(), primary_key=True),
        sa.Column("username", sa.String(32), nullable=False),
        sa.Column("password_hash", sa.String(128), nullable=False),
        sa.Column("is_active", sa.Boolean(), nullable=False, server_default=sa.false()),
        sa.Column("is_admin", sa.Boolean(), nullable=False, server_default=sa.false()),
        sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.func.now()),
        sa.Column("last_login_at", sa.DateTime(), nullable=True),
    )
    op.create_index("ix_users_username", "users", ["username"], unique=True)


def downgrade() -> None:
    op.drop_index("ix_users_username", table_name="users")
    op.drop_table("users")