/**
 * Where an item's price came from, and when that changes.
 *
 * This is the protection that used to live in the schema. Items are priced on
 * arrival — the model's suggestion, or the 80.00 default — so nothing stops a
 * number nobody chose from reaching the storefront except the review queue
 * showing that it was never chosen.
 *
 * Pure and separately tested because the failure is silent. An item that sells
 * at a default price looks exactly like one that sells at a chosen price;
 * 80.00 was picked precisely because it reads as a decision rather than as an
 * obvious sentinel the way 0.00 would.
 */
export type PriceSource = 'default' | 'ai' | 'admin';

/**
 * Editing the number is the admin taking responsibility for it, and it is the
 * only thing that can. Publishing without touching the field deliberately does
 * NOT confirm it — that would turn "I did not look at this" into "I approved
 * this", which is the exact misrecording the review queue exists to prevent.
 */
export function nextPriceSource(
  current: PriceSource,
  submittedCents: number,
  storedCents: number
): PriceSource {
  if (current === 'admin') return 'admin';
  return submittedCents === storedCents ? current : 'admin';
}

/** Anything a person did not choose, which the screen marks visibly. */
export function isUnconfirmed(source: PriceSource): boolean {
  return source !== 'admin';
}