// The built-in phantoms, bundled as genuine `.phantom` (HDF5) assets. They are
// generated by scripts/gen-phantoms.mjs. Vite's `?url` import copies each file
// into the build and gives a base-correct URL to fetch at runtime.
import cubeUrl from './data/cube.phantom?url'
import sphereUrl from './data/sphere.phantom?url'
import { loadPhantom } from './loadPhantom.ts'
import type { Phantom } from './phantomTypes.ts'

export interface BuiltinPhantom {
  id: string
  label: string
  description: string
  url: string
}

export const BUILTIN_PHANTOMS: BuiltinPhantom[] = [
  {
    id: 'cube',
    label: 'Cube',
    description: '10 mm cube, uniform spins',
    url: cubeUrl,
  },
  {
    id: 'sphere',
    label: 'Sphere',
    description: '10 mm sphere, uniform spins',
    url: sphereUrl,
  },
]

export async function fetchBuiltinPhantom(b: BuiltinPhantom): Promise<Phantom> {
  const resp = await fetch(b.url)
  if (!resp.ok) throw new Error(`Failed to fetch phantom "${b.id}": ${resp.status}`)
  const buf = await resp.arrayBuffer()
  return loadPhantom(buf, b.label)
}