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Add StateStoreViewModel and publisher extensions for convenienec.

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This commit is contained in:
David Langley
2021-09-14 22:28:25 +01:00
parent 3d65fbd48f
commit da5fcd5d4f
8 changed files with 159 additions and 31 deletions
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49
RiotSwiftUI/Modules/Template/SimpleUserProfileExample/ViewModel/TemplateUserProfileViewModel.swift
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@@ -16,33 +16,36 @@
import SwiftUI
import Combine
@available(iOS 14.0, *)
class TemplateUserProfileViewModel: ObservableObject, TemplateUserProfileViewModelProtocol {
@available(iOS 14, *)
typealias TemplateUserProfileViewModelType = StateStoreViewModel<TemplateUserProfileViewState,
TemplateUserProfileStateAction,
TemplateUserProfileViewAction>
@available(iOS 14, *)
class TemplateUserProfileViewModel: TemplateUserProfileViewModelType, TemplateUserProfileViewModelProtocol {
// MARK: - Properties
// MARK: Private
private let templateUserProfileService: TemplateUserProfileServiceProtocol
private var cancellables = Set<AnyCancellable>()
// MARK: Public
@Published private(set) var viewState: TemplateUserProfileViewState
var completion: ((TemplateUserProfileViewModelResult) -> Void)?
// MARK: - Setup
init(templateUserProfileService: TemplateUserProfileServiceProtocol, initialState: TemplateUserProfileViewState? = nil) {
static func makeTemplateUserProfileViewModel(templateUserProfileService: TemplateUserProfileServiceProtocol) -> TemplateUserProfileViewModelProtocol {
return TemplateUserProfileViewModel(templateUserProfileService: templateUserProfileService)
}
fileprivate init(templateUserProfileService: TemplateUserProfileServiceProtocol) {
self.templateUserProfileService = templateUserProfileService
self.viewState = initialState ?? Self.defaultState(templateUserProfileService: templateUserProfileService)
templateUserProfileService.presenceSubject
.map(TemplateUserProfileStateAction.updatePresence)
.receive(on: DispatchQueue.main)
.sink(receiveValue: { [weak self] action in
self?.dispatch(action:action)
})
.store(in: &cancellables)
super.init(initialViewState: Self.defaultState(templateUserProfileService: templateUserProfileService))
setupPresenceObserving()
}
private static func defaultState(templateUserProfileService: TemplateUserProfileServiceProtocol) -> TemplateUserProfileViewState {
@@ -53,8 +56,15 @@ class TemplateUserProfileViewModel: ObservableObject, TemplateUserProfileViewMod
)
}
private func setupPresenceObserving() {
templateUserProfileService.presenceSubject
.map(TemplateUserProfileStateAction.updatePresence)
.sinkDispatchTo(self)
}
// MARK: - Public
func process(viewAction: TemplateUserProfileViewAction) {
override func process(viewAction: TemplateUserProfileViewAction) {
switch viewAction {
case .cancel:
cancel()
@@ -62,13 +72,6 @@ class TemplateUserProfileViewModel: ObservableObject, TemplateUserProfileViewMod
done()
}
}
// MARK: - Private
/// Send state actions to mutate the state.
/// - Parameter action: The `TemplateUserProfileStateAction` to trigger the state change.
private func dispatch(action: TemplateUserProfileStateAction) {
Self.reducer(state: &self.viewState, action: action)
}
/// A redux style reducer
///