import type { Game } from './engine';
import { basicPendingMovement, type MovementPending } from './basic-pending-movement';

/**
 * Revealing Richese's existing marker during a different player's ordinary
 * movement cannot add an occupying faction to the declared destination. The
 * caller retains its common profile and Truthtrance/commitment guards.
 */
export function richeseRevealForeignMovementPending(g: Game): MovementPending | null {
  if (!Array.isArray(g.players)) return null;
  const richese = g.players.find(player => player.faction === 'richese');
  const deployed = richese?.noField?.deployed;
  if (!richese || !deployed || deployed.controller !== richese.id ||
      !deployed.location || !('territory' in deployed.location)) return null;
  const movement = basicPendingMovement(g);
  return movement && movement.player !== richese.id ? movement.key : null;
}