Javier Cicchelli 8ae955008e [Feature] Location add (#11)
This PR contains the work done to add a location at a time and updates the locations in the list of locations screen right after.

To give further details about the work done:
- [x] implemented the `LocationProvider` provider in the **Persistence** library;
- [x] implemented the `SaveLocalLocationUseCase` use case;
- [x] defined the properties and functions of the `LocationsAddViewModeling` protocol to support the clean, updating and saving of locations;
- [x] implemented the `LocationsAddViewModel` view model;
- [x] implemented the `LocationsAddViewController` view controller;
- [x] implemented the dismissal of the `LocationsAddCoordinator` coordinator.

Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Reviewed-on: rock-n-code/deep-linking-assignment#11
2023-04-12 21:25:08 +00:00

88 lines
2.0 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.container.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 numberOfSectionsInData: Int { locationProvider.numberOfSections }
var viewStatusPublisher: Published<LocationsListViewStatus>.Publisher { $viewStatus }
// MARK: Functions
func openAddLocation() {
coordinator?.openAddLocation()
}
func loadLocations() {
Task {
do {
viewStatus = .loading
try await loadRemoteLocations()
try locationProvider.fetch()
viewStatus = .loaded
} catch {
viewStatus = .error
}
}
}
func numberOfDataItems(in section: Int) -> Int {
locationProvider.numberOfLocationsInSection(section)
}
func dataItem(at indexPath: IndexPath) -> Location {
locationProvider.location(at: indexPath)
}
}
// MARK: - Enumerations
enum LocationsListViewStatus {
case initialised
case loading
case loaded
case error
}