Javier Cicchelli 1de87263ba [Improvement] Small, tiny things (#14)
This PR contains the work on implementing some public interfaces that were forgotten during the development of this app and, of course, improves the text of the README file a bit more.

To give further details about the work done:
- [x] implemented the `Service` protocol in the `Persistence` library and conformed the `PersistenceService` service to it;
- [x] implemented the `Service` protocol in the `Remote` library and conformed the `RemoteService` service to it;
- [x] implemented the `Application` protocol in the `Core` library and conformed the `UIApplication` class to it;
- [x] improved the dependency keys used by the `DependencyService` service to use these protocols instead;
- [x] tweaked the text of the README file.

Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Reviewed-on: rock-n-code/deep-linking-assignment#14
2023-04-13 13:34:06 +00:00

97 lines
2.3 KiB
Swift

//
// LocationsListViewModel.swift
// Locations
//
// Created by Javier Cicchelli on 11/04/2023.
// Copyright © 2023 Röck+Cöde. All rights reserved.
//
import Combine
import Dependency
import Foundation
import Persistence
class LocationsListViewModel: ObservableObject {
// MARK: Dependencies
@Dependency(\.persistence) private var persistence
// MARK: Properties
weak var coordinator: LocationsListCoordination?
private lazy var locationProvider = LocationProvider(managedContext: persistence.viewContext)
@Published private var viewStatus: LocationsListViewStatus = .initialised
private let loadRemoteLocations = LoadRemoteLocationsUseCase()
// MARK: Initialisers
init(coordinator: LocationsListCoordination) {
self.coordinator = coordinator
}
}
// MARK: - LocationsListViewModeling
extension LocationsListViewModel: LocationsListViewModeling {
// MARK: Properties
var locationsDidChangePublisher: PassthroughSubject<[Persistence.Change], Never> { locationProvider.didChangePublisher }
var numberOfLocationSections: Int { locationProvider.numberOfSections }
var viewStatusPublisher: Published<LocationsListViewStatus>.Publisher { $viewStatus }
// MARK: Functions
func loadLocations() {
Task {
do {
viewStatus = .loading
try await loadRemoteLocations()
try locationProvider.fetch()
viewStatus = .loaded
} catch {
viewStatus = .error
}
}
}
func location(at indexPath: IndexPath) -> Location {
locationProvider.location(at: indexPath)
}
func numberOfLocations(in section: Int) -> Int {
locationProvider.numberOfLocationsInSection(section)
}
func openLocationsAdd() {
coordinator?.openLocationsAddScreen()
}
func openWikipedia(at indexPath: IndexPath) {
guard let url = locationProvider.location(at: indexPath).wikipediaPlacesURL else {
return
}
coordinator?.openWikipediaApp(with: url)
}
}
// MARK: - Enumerations
enum LocationsListViewStatus {
case initialised
case loading
case loaded
case error
}