import { GetterRepository } from "./GetterRepository";
import { IEta, IOrderedStop, IRoute } from "../entities/entities";

interface ApiBasedRepositoryCache {
  etasForShuttleId: {
    [shuttleId: string]: IEta[],
  },
  etasForStopId: {
    [stopId: string]: IEta[],
  },
  // To speed things up, implement caches for other data later
}

export class ApiBasedRepository implements GetterRepository {
  private cache: ApiBasedRepositoryCache;

  constructor(initialCache: ApiBasedRepositoryCache | undefined = undefined) {
    if (initialCache) {
      this.cache = initialCache;
    } else {
      this.cache = {
        etasForShuttleId: {},
        etasForStopId: {},
      }
    }
  }

  public async getEtaForShuttleAndStopId(shuttleId: string, stopId: string): Promise<IEta | null> {
    return null;
  }

  public async getEtasForShuttleId(shuttleId: string): Promise<[]> {
    return [];
  }

  public async getEtasForStopId(stopId: string): Promise<[]> {
    return [];
  }

  // TODO: migrate rest of logic over to this class
  public async getOrderedStopByRouteAndStopId(routeId: string, stopId: string): Promise<| null> {
    return null;
  }

  public async getOrderedStopsByRouteId(routeId: string): Promise<[]> {
    return Promise.resolve([]);
  }

  public async getOrderedStopsByStopId(stopId: string): Promise<[]> {
    return Promise.resolve([]);
  }

  public async getRouteById(routeId: string): Promise<| null> {
    return Promise.resolve(null);
  }

  public async getRoutesBySystemId(systemId: string): Promise<[]> {
    return Promise.resolve([]);
  }

  public async getShuttleById(shuttleId: string): Promise<| null> {
    return Promise.resolve(null);
  }

  public async getShuttlesByRouteId(routeId: string): Promise<[]> {
    return Promise.resolve([]);
  }

  public async getShuttlesBySystemId(systemId: string): Promise<[]> {
    return Promise.resolve([]);
  }

  public async getStopById(stopId: string): Promise<| null> {
    return null;
  }

  public async getStopsBySystemId(systemId: string): Promise<[]> {
    return [];
  }

  public async getSystemById(systemId: string): Promise<| null> {
    return null;
  }

  public async getSystems(): Promise<[]> {
    return Promise.resolve([]);
  }
}