import { vi } from 'vitest'

// The canonical fetch stub for store specs.
//
// `handler(url, init)` returns `{ status, body }`; body is JSON-encoded, and
// `ok` is derived from the status so a store's error path can be exercised by
// returning 4xx/5xx. Returns the vi.fn so a caller can assert on calls.
//
// Extracted 2026-09-21 from six specs carrying byte-identical copies
// (adminStore, credentials, dbMaintenance, gallery, suggestions,
// galleryRelatedStrip). Those still hold their own; migrate each the next
// time it is touched rather than in one sweep.
export function stubFetch (handler) {
  globalThis.fetch = vi.fn(async (url, init) => {
    const { status, body } = handler(url, init)
    return {
      ok: status >= 200 && status < 300,
      status,
      statusText: String(status),
      text: async () => (body == null ? '' : JSON.stringify(body)),
    }
  })
  return globalThis.fetch
}