export type WorkReviewDecision = 'approved' | 'revision_required'
export type WorkReviewReviewerRole = 'manager' | 'final_reviewer'

export function deriveWorkReviewDecision(
  decisions: ReadonlyArray<{ decision: WorkReviewDecision }>,
): WorkReviewDecision {
  return decisions.some((item) => item.decision === 'revision_required')
    ? 'revision_required'
    : 'approved'
}

export function deriveCompletedWorkReviewStatus(
  reviews: ReadonlyArray<{
    reviewerRole: string
    decision: WorkReviewDecision
  }>,
): WorkReviewDecision | null {
  const manager = reviews.find((review) => review.reviewerRole === 'manager')
  const finalReviewer = reviews.find((review) => review.reviewerRole === 'final_reviewer')
  if (!manager || !finalReviewer) return null
  return deriveWorkReviewDecision([manager, finalReviewer])
}