import 'dart:collection';

import 'package:fast_network_navigation/structs/linked_landmarks.dart';
import 'package:fast_network_navigation/structs/trip.dart';
import 'package:fast_network_navigation/structs/landmark.dart';
import 'package:shared_preferences/shared_preferences.dart';

Future<List<Trip>> loadTrips() async {
  SharedPreferences prefs = await SharedPreferences.getInstance();

  List<Trip> trips = [];
  Set<String> keys = prefs.getKeys();
  for (String key in keys) {
    if (key.startsWith('trip_')) {
      String uuid = key.replaceFirst('trip_', '');
      trips.add(Trip.fromPrefs(prefs, uuid));
    }
  }

  if (trips.isEmpty) {
    String now = DateTime.now().toString();
    trips.add(
      Trip(uuid: '1', cityName: 'Paris (generated $now)', landmarks: LinkedList<Landmark>())
    );
    //   Trip(uuid: "1", cityName: "Paris", landmarks: [
    //     Landmark(name: "Landmark 1", location: [48.85, 2.35], type: LandmarkType(name: "Type 1")),
    //     Landmark(name: "Landmark 2", location: [48.86, 2.36], type: LandmarkType(name: "Type 2")),
    //     Landmark(name: "Landmark 3", location: [48.75, 2.3], type: LandmarkType(name: "Type 3")),
    //     Landmark(name: "Landmark 4", location: [48.9, 2.4], type: LandmarkType(name: "Type 4")),
    //     Landmark(name: "Landmark 5", location: [48.91, 2.45], type: LandmarkType(name: "Type 5")),
    //   ]));
    // trips.add(Trip(uuid: "2", cityName: "Vienna", landmarks: []));
    // trips.add(Trip(uuid: "3", cityName: "London", landmarks: []));
    // trips.add(Trip(uuid: "4", cityName: "Madrid", landmarks: []));
    // trips.add(Trip(uuid: "5", cityName: "Tokyo", landmarks: []));
    // trips.add(Trip(uuid: "6", cityName: "New York", landmarks: []));
    // trips.add(Trip(uuid: "7", cityName: "Los Angeles", landmarks: []));
    // trips.add(Trip(uuid: "8", cityName: "Zurich", landmarks: []));
    // trips.add(Trip(uuid: "9", cityName: "Orschwiller", landmarks: []));

  }

  return trips;
}