export interface ProjectDevicePlacementSource {
  category?: string | null;
  phaseType: "single_phase" | "three_phase";
}

export interface ProjectDevicePlacementSection {
  key: string;
}

export type DefaultCircuitSectionKey = "lighting" | "single_phase" | "three_phase";

// Lighting classification takes precedence over the electrical phase because
// lighting devices use their dedicated numbering section by default.
export function inferProjectDeviceSectionKey(
  device: ProjectDevicePlacementSource
): DefaultCircuitSectionKey {
  const category = (device.category ?? "").trim().toLowerCase();
  if (category.includes("light") || category.includes("beleuchtung")) {
    return "lighting";
  }
  return device.phaseType;
}

export function isProjectDevicePlacementValid(
  device: ProjectDevicePlacementSource,
  section: ProjectDevicePlacementSection
): boolean {
  return section.key === inferProjectDeviceSectionKey(device);
}