import { IEta, IOrderedStop, IRoute, IShuttle, IStop } from "../../entities/ShuttleRepositoryEntities";

/**
 * Shuttle getter repository to be linked to a system.
 */
export interface ShuttleGetterRepository {
  getStops(): Promise<IStop[]>;
  getStopById(stopId: string): Promise<IStop | null>;

  getRoutes(): Promise<IRoute[]>;
  getRouteById(routeId: string): Promise<IRoute | null>;

  getShuttles(): Promise<IShuttle[]>;
  getShuttleById(shuttleId: string): Promise<IShuttle | null>;
  getShuttlesByRouteId(routeId: string): Promise<IShuttle[]>;

  getEtasForShuttleId(shuttleId: string): Promise<IEta[]>;
  getEtasForStopId(stopId: string): Promise<IEta[]>;
  getEtaForShuttleAndStopId(shuttleId: string, stopId: string): Promise<IEta | null>;

  /**
   * Subscribe to all updates in ETA data.
   * The subscriber persists even if the ETA data does not
   * exist within the repository, and may fire again
   * if ETA data is restored.
   * @param listener
   */
  subscribeToEtaUpdates(
    listener: (eta: IEta) => void,
  ): void;

  /**
   * Unsubscribe from all ETA updates for the given callback.
   * Callback must be passed by reference.
   * @param listener
   */
  unsubscribeFromEtaUpdates(listener: (eta: IEta) => void): void;

  getOrderedStopByRouteAndStopId(routeId: string, stopId: string): Promise<IOrderedStop | null>;

  /**
   * Get ordered stops with the given stop ID.
   * Returns an empty array if no ordered stops found.
   * @param stopId
   */
  getOrderedStopsByStopId(stopId: string): Promise<IOrderedStop[]>;

  /**
   * Get ordered stops with the given route ID.
   * Returns an empty array if no ordered stops found.
   * @param routeId
   */
  getOrderedStopsByRouteId(routeId: string): Promise<IOrderedStop[]>;
}