export const UNIVERSAL_ROW_VERSION = 1

export interface UniversalRow {
  sourceType: string
  sourceId: string
  status: string
  locale: string
  sourceUrl?: string
  slug?: string
  title?: string
  excerpt?: string
  bodyHtml?: string
  publishedAt?: string
  modifiedAt?: string
  taxonomyRefs: Array<{ taxonomy: string; sourceTermId: string }>
  attachmentRefs: Array<{ role: string; sourceId?: string; sourceUrl?: string }>
  seo: Record<string, unknown>
  knownFields: Record<string, unknown>
  extras: Record<string, unknown>
  rawLocation: string
}

const REQUIRED: (keyof UniversalRow)[] = [
  'sourceType', 'sourceId', 'status', 'locale',
  'taxonomyRefs', 'attachmentRefs', 'seo', 'knownFields', 'extras', 'rawLocation',
]

export function isUniversalRow(v: unknown): v is UniversalRow {
  if (typeof v !== 'object' || v === null) return false
  const row = v as Record<string, unknown>
  return REQUIRED.every((k) => k in row)
    && Array.isArray(row.taxonomyRefs) && Array.isArray(row.attachmentRefs)
    && row.seo !== null && typeof row.seo === 'object'
    && row.knownFields !== null && typeof row.knownFields === 'object'
    && row.extras !== null && typeof row.extras === 'object'
}