import { Itinerary, TravelMode } from '@wemap/routers';
import { Coords } from '../types';
import { fetchItineraries } from '../api/itinerary-service';
import { useSettingsStore } from '../storages/settings';

/**
 * Manages itinerary requests and operations.
 */
export class ItineraryManager {
    /** @hidden */
    constructor() {}

    /**
     * Fetches itineraries between two points using the specified travel mode.
     * 
     * @param {Coords} origin - The starting coordinates
     * @param {Coords} destination - The ending coordinates 
     * @param {TravelMode} [mode='WALK'] - The mode of transportation to use (defaults to 'WALK')
     * @returns {Promise<{ itineraries: Itinerary[] }>} Promise that resolves to an object containing an array of Itinerary objects
     */
    getItineraries(origin: Coords, destination: Coords, mode: TravelMode = 'WALK') {
        const emmid = useSettingsStore.getState().emmid;

        const routerRequest = {
            origin,
            destination,
            travelMode: mode,
            mapId: emmid ?? undefined
        };

        return fetchItineraries(routerRequest).then((results) => ({
                itineraries: results.itineraries.map((itinerary) => Itinerary.fromJson(itinerary))
            })
        );
    }
}

/** @hidden */
export default new ItineraryManager();