import { prisma } from '../lib/prisma';
import { AppError } from '../types/index';

export async function listVlans() {
  return prisma.vlan.findMany({ orderBy: { vlanId: 'asc' } });
}

export async function createVlan(data: {
  vlanId: number;
  name: string;
  description?: string;
  color?: string;
}) {
  const existing = await prisma.vlan.findUnique({ where: { vlanId: data.vlanId } });
  if (existing) throw new AppError(`VLAN ID ${data.vlanId} already exists`, 409, 'DUPLICATE');

  if (data.vlanId < 1 || data.vlanId > 4094) {
    throw new AppError('VLAN ID must be between 1 and 4094', 400, 'INVALID_VLAN_ID');
  }

  return prisma.vlan.create({ data });
}

export async function updateVlan(
  id: string,
  data: Partial<{ name: string; description: string; color: string }>
) {
  const existing = await prisma.vlan.findUnique({ where: { id } });
  if (!existing) throw new AppError('VLAN not found', 404, 'NOT_FOUND');
  return prisma.vlan.update({ where: { id }, data });
}

export async function deleteVlan(id: string) {
  const existing = await prisma.vlan.findUnique({ where: { id } });
  if (!existing) throw new AppError('VLAN not found', 404, 'NOT_FOUND');
  return prisma.vlan.delete({ where: { id } });
}