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Add shared state sample #19

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Add shared state sample #19

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7d0c399
Add sharing state sample
dchohfi Nov 5, 2019
29aaedc
Removing unecessary passrhough object
dchohfi Nov 5, 2019
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56 changes: 56 additions & 0 deletions CombineFeedback.xcodeproj/project.pbxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,12 @@
58C6E5E022A9F027005A9685 /* Movies.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58C6E5DF22A9F027005A9685 /* Movies.swift */; };
58C6E5E722AB14DB005A9685 /* AsyncImage.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58C6E5E622AB14DB005A9685 /* AsyncImage.swift */; };
7415E15122E1B4F000117DA3 /* TestScheduler.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74A3948222E0B7E20061CE51 /* TestScheduler.swift */; };
C3B78C7D2371170D00D91F95 /* RegistrationView.swift in Sources */ = {isa = PBXBuildFile; fileRef = C3B78C752371170D00D91F95 /* RegistrationView.swift */; };
C3B78C7E2371170D00D91F95 /* RegistrationViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = C3B78C762371170D00D91F95 /* RegistrationViewModel.swift */; };
C3B78C7F2371170D00D91F95 /* LoginView.swift in Sources */ = {isa = PBXBuildFile; fileRef = C3B78C782371170D00D91F95 /* LoginView.swift */; };
C3B78C802371170D00D91F95 /* LoginViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = C3B78C792371170D00D91F95 /* LoginViewModel.swift */; };
C3B78C812371170D00D91F95 /* UserAccountViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = C3B78C7B2371170D00D91F95 /* UserAccountViewModel.swift */; };
C3B78C822371170D00D91F95 /* UserAccountView.swift in Sources */ = {isa = PBXBuildFile; fileRef = C3B78C7C2371170D00D91F95 /* UserAccountView.swift */; };
/* End PBXBuildFile section */

/* Begin PBXContainerItemProxy section */
Expand Down Expand Up @@ -159,6 +165,12 @@
58C6E5E622AB14DB005A9685 /* AsyncImage.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AsyncImage.swift; sourceTree = "<group>"; };
742D7D6522B02A7100A97AF3 /* Package.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Package.swift; sourceTree = "<group>"; };
74A3948222E0B7E20061CE51 /* TestScheduler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TestScheduler.swift; sourceTree = "<group>"; };
C3B78C752371170D00D91F95 /* RegistrationView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RegistrationView.swift; sourceTree = "<group>"; };
C3B78C762371170D00D91F95 /* RegistrationViewModel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RegistrationViewModel.swift; sourceTree = "<group>"; };
C3B78C782371170D00D91F95 /* LoginView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = LoginView.swift; sourceTree = "<group>"; };
C3B78C792371170D00D91F95 /* LoginViewModel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = LoginViewModel.swift; sourceTree = "<group>"; };
C3B78C7B2371170D00D91F95 /* UserAccountViewModel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = UserAccountViewModel.swift; sourceTree = "<group>"; };
C3B78C7C2371170D00D91F95 /* UserAccountView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = UserAccountView.swift; sourceTree = "<group>"; };
/* End PBXFileReference section */

/* Begin PBXFrameworksBuildPhase section */
Expand Down Expand Up @@ -281,6 +293,7 @@
5800FFB722A8CDA5005A860B /* Example */ = {
isa = PBXGroup;
children = (
C3B78C732371170D00D91F95 /* Account */,
583971BD22ADB9DF00139CC0 /* Helpers */,
58C6E5E522AB149D005A9685 /* Views */,
58C6E5DE22A9EFDF005A9685 /* CounterExample */,
Expand Down Expand Up @@ -393,6 +406,43 @@
path = Tests;
sourceTree = "<group>";
};
C3B78C732371170D00D91F95 /* Account */ = {
isa = PBXGroup;
children = (
C3B78C742371170D00D91F95 /* RegistrationView */,
C3B78C772371170D00D91F95 /* LoginView */,
C3B78C7A2371170D00D91F95 /* UserAccountView */,
);
path = Account;
sourceTree = "<group>";
};
C3B78C742371170D00D91F95 /* RegistrationView */ = {
isa = PBXGroup;
children = (
C3B78C752371170D00D91F95 /* RegistrationView.swift */,
C3B78C762371170D00D91F95 /* RegistrationViewModel.swift */,
);
path = RegistrationView;
sourceTree = "<group>";
};
C3B78C772371170D00D91F95 /* LoginView */ = {
isa = PBXGroup;
children = (
C3B78C782371170D00D91F95 /* LoginView.swift */,
C3B78C792371170D00D91F95 /* LoginViewModel.swift */,
);
path = LoginView;
sourceTree = "<group>";
};
C3B78C7A2371170D00D91F95 /* UserAccountView */ = {
isa = PBXGroup;
children = (
C3B78C7B2371170D00D91F95 /* UserAccountViewModel.swift */,
C3B78C7C2371170D00D91F95 /* UserAccountView.swift */,
);
path = UserAccountView;
sourceTree = "<group>";
};
/* End PBXGroup section */

/* Begin PBXHeadersBuildPhase section */
Expand Down Expand Up @@ -658,14 +708,20 @@
buildActionMask = 2147483647;
files = (
25C57B2C22BC2C33007CB4D6 /* Activity.swift in Sources */,
C3B78C7E2371170D00D91F95 /* RegistrationViewModel.swift in Sources */,
58C6E5E022A9F027005A9685 /* Movies.swift in Sources */,
C3B78C822371170D00D91F95 /* UserAccountView.swift in Sources */,
252BF08422BAE05700BC4265 /* SignIn.swift in Sources */,
C3B78C802371170D00D91F95 /* LoginViewModel.swift in Sources */,
5800FFB922A8CDA5005A860B /* AppDelegate.swift in Sources */,
5800FFBB22A8CDA5005A860B /* SceneDelegate.swift in Sources */,
C3B78C812371170D00D91F95 /* UserAccountViewModel.swift in Sources */,
C3B78C7F2371170D00D91F95 /* LoginView.swift in Sources */,
583971C322ADBA9900139CC0 /* PublisherExtensions.swift in Sources */,
58C6E5E722AB14DB005A9685 /* AsyncImage.swift in Sources */,
5800FFBD22A8CDA5005A860B /* Counter.swift in Sources */,
25F23C2922CA984E00894863 /* TrafficLight.swift in Sources */,
C3B78C7D2371170D00D91F95 /* RegistrationView.swift in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
};
Expand Down
53 changes: 53 additions & 0 deletions Example/Account/LoginView/LoginView.swift
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@@ -0,0 +1,53 @@
import Foundation
import SwiftUI
import Combine
import CombineFeedback
import CombineFeedbackUI

public struct LoginView: View {
public typealias State = LoginViewModel.State
public typealias Event = LoginViewModel.Event

private let context: Context<State, Event>

public init(context: Context<State, Event>) {
self.context = context
}

private var submitButton: some View {
Button("Login") { self.context.send(event: .login) }
}

private var emailSection: some View {
Section(header: Text("Email"), footer: Text(self.context.invalidEmailMessage)) {
TextField("Email", text: self.context.binding(for: \.email))
.keyboardType(.emailAddress)
.textContentType(.emailAddress)
.autocapitalization(.none)
}
}

private var passwordSection: some View {
Section(header: Text("Password"), footer: Text(self.context.invalidPasswordMessage)) {
SecureField("Password", text: self.context.binding(for: \.password))
.textContentType(.newPassword)
}
}

private func welcomeAlert(alert: Alert) -> SwiftUI.Alert {
SwiftUI.Alert(title: Text(alert.title), message: Text(alert.message), dismissButton: .default(Text("OK")) {
self.context.send(event: .dismiss)
})
}

public var body: some View {
Form {
self.emailSection
self.passwordSection
self.submitButton
}
.alert(item: .constant(self.context.alertMessage), content: self.welcomeAlert(alert:))
.navigationBarItems(trailing: Activity(isAnimating: .constant(self.context.status.isLoading), style: .medium))
.navigationBarTitle(Text("Account"))
}
}
111 changes: 111 additions & 0 deletions Example/Account/LoginView/LoginViewModel.swift
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Original file line number Diff line number Diff line change
@@ -0,0 +1,111 @@
import Foundation
import Combine
import CombineFeedback
import CombineFeedbackUI

extension LoginViewModel {
public struct State {
var email = ""
var password = ""
var triedToSubmitOnce = false
var status = Status.idle
var loggedAccount: LoggedAccount?
var dismissed: Bool = false

public init() {
}

var alertMessage: Alert? {
guard let loggedAccount = loggedAccount else {
return nil
}
return Alert(title: "Welcome back", message: "\(loggedAccount.firstName)")
}

var invalidEmailMessage: String {
invalidEmail ? "Invalid E-mail" : ""
}

var invalidPasswordMessage: String {
invalidPassword ? "Invalid Password" : ""
}

var valid: Bool {
invalidEmail == false && invalidPassword == false
}

private var invalidEmail: Bool {
triedToSubmitOnce && !email.validEmail
}

private var invalidPassword: Bool {
triedToSubmitOnce && password.count <= 5
}
}

public enum Status {
case idle
case loading

var isLoading: Bool {
if case .loading = self {
return true
}
return false
}
}

public enum Event {
case login
case didSignin(LoggedAccount)
case dismiss
}
}

public final class LoginViewModel: ViewModel<LoginViewModel.State, LoginViewModel.Event> {

init(state: State = State()) {
super.init(
initial: state,
feedbacks: [LoginViewModel.whenSigning()],
scheduler: RunLoop.main,
reducer: LoginViewModel.reducer(state:event:)
)
}

private static func whenSigning() -> Feedback<State, Event> {
Feedback(predicate: { $0.status.isLoading }, effects: { (state: State) in
Just(())
.delay(for: 2, scheduler: RunLoop.main)
.map { _ in
LoggedAccount(email: state.email,
password: state.password,
firstName: "Diego",
lastName: "Chohfi")
}
.map(Event.didSignin)
.eraseToAnyPublisher()
})
}

private static func reducer(state: State, event: Event) -> State {
switch event {
case .login:
var state = state
state.triedToSubmitOnce = true
if state.valid {
state.status = .loading
}
return state
case let .didSignin(account):
var state = state
state.status = .idle
state.loggedAccount = account
return state
case .dismiss:
var state = state
state.dismissed = true
return state
}
}
}
79 changes: 79 additions & 0 deletions Example/Account/RegistrationView/RegistrationView.swift
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import Foundation
import SwiftUI
import Combine
import CombineFeedback
import CombineFeedbackUI

public struct RegistrationView: View {
public typealias State = RegistrationViewModel.State
public typealias Event = RegistrationViewModel.Event

private let context: Context<State, Event>
private let loginViewModel: LoginViewModel

public init(context: Context<State, Event>, loginViewModel: LoginViewModel) {
self.context = context
self.loginViewModel = loginViewModel
}

private var submitButton: some View {
Button("Create Account", action: { self.context.send(event: .register) })
}

private var nameSection: some View {
Section(header: Text("You")) {
HStack {
TextField("First name", text: self.context.binding(for: \.firstName))
TextField("Last name", text: self.context.binding(for: \.lastName))
}
}
}

private var emailSection: some View {
Section(header: Text("Email"), footer: Text(self.context.invalidEmailMessage)) {
TextField("Email", text: self.context.binding(for: \.email))
.keyboardType(.emailAddress)
.textContentType(.emailAddress)
.autocapitalization(.none)
}
}

private var passwordSection: some View {
Section(header: Text("Password"), footer: Text(self.context.invalidPasswordMessage)) {
SecureField("Password", text: self.context.binding(for: \.password))
.textContentType(.newPassword)
}
}

private var navigateToSignin: some View {
HStack {
Activity(isAnimating: .constant(self.context.status.isLoading), style: .medium)
NavigationLink("Sign In", destination: Widget(viewModel: self.loginViewModel, render: LoginView.init))
}
}

private var dismissButton: some View {
Button("Dismiss") { self.context.send(event: .dismiss) }
}

private func welcomeAlert(alert: Alert) -> SwiftUI.Alert {
SwiftUI.Alert(title: Text(alert.title), message: Text(alert.message), dismissButton: .default(Text("OK")) {
self.context.send(event: .dismiss)
})
}

public var body: some View {
NavigationView {
Form {
self.nameSection
self.emailSection
self.passwordSection
self.submitButton
}
.disabled(self.context.status.isLoading)
.alert(item: .constant(self.context.alertMessage), content: self.welcomeAlert(alert:))
.navigationBarTitle(Text("Account"))
.navigationBarItems(leading: self.dismissButton, trailing: self.navigateToSignin)
}
}
}
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