import type { Asset } from '../model/Asset';
import { type AssetType, isPlaceableType } from '../model/AssetTypes';
import { findAsset, type Project } from '../model/Project';

export const NO_ASSET_LABEL = 'None';

/**
 * The asset's name, "None" for the empty id, `<id>?` when it no longer resolves – a dangling
 * reference shows its id rather than passing for an empty field.
 */
export function assetRefLabel(project: Project | null, id: string): string {
  if (id === '') return NO_ASSET_LABEL;
  return (project ? findAsset(project, id) : undefined)?.name ?? `${id}?`;
}

/**
 * The assets an `asset` property offers, in menu order; without `assetTypes` every placeable one.
 * Sorted by name so the order does not depend on creation time.
 */
export function assetRefChoices(project: Project, assetTypes?: readonly AssetType[]): Asset[] {
  const allowed = (asset: Asset): boolean =>
    assetTypes ? assetTypes.includes(asset.type) : isPlaceableType(asset.type);
  return project.assets
    .filter(allowed)
    .sort((a, b) => a.name.localeCompare(b.name) || a.type.localeCompare(b.type));
}

export function assetChoiceLabel(asset: Asset): string {
  return `${asset.name} (${asset.type})`;
}