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AutofillLoginDetailsViewModel.swift
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AutofillLoginDetailsViewModel.swift
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//
// AutofillLoginDetailsViewModel.swift
// DuckDuckGo
//
// Copyright © 2022 DuckDuckGo. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// swiftlint:disable file_length
import Foundation
import BrowserServicesKit
import Common
import SwiftUI
import Core
import DesignResourcesKit
import SecureStorage
protocol AutofillLoginDetailsViewModelDelegate: AnyObject {
func autofillLoginDetailsViewModelDidSave()
func autofillLoginDetailsViewModelDidAttemptToSaveDuplicateLogin()
func autofillLoginDetailsViewModelDelete(account: SecureVaultModels.WebsiteAccount, title: String)
func autofillLoginDetailsViewModelDismiss()
}
struct ConfirmationAlert {
var title: String
var message: String
var button: String
}
// swiftlint:disable type_body_length
final class AutofillLoginDetailsViewModel: ObservableObject {
enum ViewMode {
case edit
case view
case new
}
enum PasteboardCopyAction {
case username
case password
case address
case notes
}
enum Constants {
static let privateEmailURL = URL(string: "https://duckduckgo.com/email")!
}
weak var delegate: AutofillLoginDetailsViewModelDelegate?
var account: SecureVaultModels.WebsiteAccount?
var emailManager: EmailManager
private let tld: TLD
private let autofillDomainNameUrlMatcher = AutofillDomainNameUrlMatcher()
private let autofillDomainNameUrlSort = AutofillDomainNameUrlSort()
@ObservedObject var headerViewModel: AutofillLoginDetailsHeaderViewModel
@Published var isPasswordHidden = true
@Published var username = ""
@Published var password = ""
@Published var address = ""
@Published var notes = ""
@Published var title = ""
@Published var selectedCell: UUID?
@Published var viewMode: ViewMode = .view {
didSet {
selectedCell = nil
if viewMode == .edit && password.isEmpty {
isPasswordHidden = false
} else {
isPasswordHidden = true
}
}
}
// MARK: Private Emaill Address Variables
@Published var privateEmailRequestInProgress: Bool = false
@Published var usernameIsPrivateEmail: Bool = false
@Published var hasValidPrivateEmail: Bool = false
@Published var privateEmailStatus: EmailAliasStatus = .unknown
@Published var privateEmailStatusBool: Bool = false {
didSet {
let status = privateEmailStatus == .active ? true : false
if status != privateEmailStatusBool {
isShowingAddressUpdateConfirmAlert = true
}
}
}
@Published var isShowingAddressUpdateConfirmAlert: Bool = false
@Published var isSignedIn: Bool = false
var userDuckAddress: String {
return emailManager.userEmail ?? ""
}
var privateEmailMessage: String {
var message: String
if isSignedIn {
switch privateEmailStatus {
case .error:
message = UserText.autofillPrivateEmailMessageError
case .active:
message = UserText.autofillPrivateEmailMessageActive
case .inactive:
message = UserText.autofillPrivateEmailMessageDeactivated
case .notFound:
message = ""
default:
message = UserText.autofillPrivateEmailMessageDeactivated
}
} else {
message = UserText.autofillSignInToManageEmail
}
return message
}
var toggleConfirmationAlert: ConfirmationAlert {
if privateEmailStatus == .active {
return ConfirmationAlert(title: UserText.autofillEmailDeactivateConfirmTitle,
message: String(format: UserText.autofillEmailDeactivateConfirmContent, username),
button: UserText.autofillDeactivate)
}
return ConfirmationAlert(title: UserText.autofillEmailActivateConfirmTitle,
message: String(format: UserText.autofillEmailActivateConfirmContent, username),
button: UserText.autofillActivate)
}
var shouldAllowManagePrivateAddress: Bool {
return hasValidPrivateEmail && isSignedIn && (privateEmailStatus != .notFound)
}
private var previousUsername: String = ""
private var passwordData: Data {
password.data(using: .utf8)!
}
var navigationTitle: String {
switch viewMode {
case .edit:
return UserText.autofillLoginDetailsEditTitle
case .view:
return title.isEmpty ? address : title
case .new:
return UserText.autofillLoginDetailsNewTitle
}
}
var canSave: Bool {
return !username.isEmpty || !password.isEmpty || !address.isEmpty || !title.isEmpty || !notes.isEmpty
}
var websiteIsValidUrl: Bool {
account?.domain?.toTrimmedURL != nil
}
var userVisiblePassword: String {
let passwordHider = PasswordHider(password: password)
return isPasswordHidden ? passwordHider.hiddenPassword : passwordHider.password
}
var usernameDisplayString: String {
AutofillInterfaceEmailTruncator.truncateEmail(username, maxLength: 36)
}
internal init(account: SecureVaultModels.WebsiteAccount? = nil,
tld: TLD,
emailManager: EmailManager = EmailManager()) {
self.account = account
self.tld = tld
self.headerViewModel = AutofillLoginDetailsHeaderViewModel()
self.emailManager = emailManager
self.emailManager.requestDelegate = self
if let account = account {
self.updateData(with: account)
AppDependencyProvider.shared.autofillLoginSession.lastAccessedAccount = account
} else {
viewMode = .new
}
}
func updateData(with account: SecureVaultModels.WebsiteAccount) {
self.account = account
username = account.username ?? ""
address = account.domain ?? ""
title = account.title ?? ""
notes = account.notes ?? ""
headerViewModel.updateData(with: account,
tld: tld,
autofillDomainNameUrlMatcher: autofillDomainNameUrlMatcher,
autofillDomainNameUrlSort: autofillDomainNameUrlSort)
setupPassword(with: account)
// Determine Private Email Status when required
usernameIsPrivateEmail = emailManager.isPrivateEmail(email: username)
if emailManager.isSignedIn {
isSignedIn = true
if usernameIsPrivateEmail {
Task { try? await getPrivateEmailStatus() }
}
}
}
func toggleEditMode() {
withAnimation {
if viewMode == .edit {
viewMode = .view
if let account = account {
updateData(with: account)
}
} else {
previousUsername = username
viewMode = .edit
}
}
}
func copyToPasteboard(_ action: PasteboardCopyAction) {
var message = ""
switch action {
case .username:
message = UserText.autofillCopyToastUsernameCopied
UIPasteboard.general.string = username
case .password:
message = UserText.autofillCopyToastPasswordCopied
UIPasteboard.general.string = password
case .address:
message = UserText.autofillCopyToastAddressCopied
UIPasteboard.general.string = address
case .notes:
message = UserText.autofillCopyToastNotesCopied
UIPasteboard.general.string = notes
}
presentCopyConfirmation(message: message)
}
private func presentCopyConfirmation(message: String) {
DispatchQueue.main.async {
ActionMessageView.present(message: message,
actionTitle: "",
onAction: {})
}
}
private func setupPassword(with account: SecureVaultModels.WebsiteAccount) {
do {
if let accountID = account.id, let accountIdInt = Int64(accountID) {
let vault = try AutofillSecureVaultFactory.makeVault(errorReporter: SecureVaultErrorReporter.shared)
if let credential = try
vault.websiteCredentialsFor(accountId: accountIdInt) {
self.password = credential.password.flatMap { String(data: $0, encoding: .utf8) } ?? ""
}
}
} catch {
Pixel.fire(pixel: .secureVaultError, error: error)
}
}
// swiftlint:disable:next cyclomatic_complexity
func save() {
guard let vault = try? AutofillSecureVaultFactory.makeVault(errorReporter: SecureVaultErrorReporter.shared) else {
return
}
switch viewMode {
case .edit:
guard let accountID = account?.id else {
assertionFailure("Trying to save edited account, but the account doesn't exist")
return
}
do {
if let accountIdInt = Int64(accountID),
var credential = try vault.websiteCredentialsFor(accountId: accountIdInt) {
credential.account.username = username
credential.account.title = title
credential.account.domain = autofillDomainNameUrlMatcher.normalizeUrlForWeb(address)
credential.account.notes = notes
credential.password = passwordData
_ = try vault.storeWebsiteCredentials(credential)
delegate?.autofillLoginDetailsViewModelDidSave()
// Refetch after save to get updated properties like "lastUpdated"
if let newCredential = try vault.websiteCredentialsFor(accountId: accountIdInt) {
self.updateData(with: newCredential.account)
}
viewMode = .view
}
} catch let error {
handleSecureVaultError(error)
}
case .view:
break
case .new:
let cleanAddress = autofillDomainNameUrlMatcher.normalizeUrlForWeb(address)
let account = SecureVaultModels.WebsiteAccount(title: title, username: username, domain: cleanAddress, notes: notes)
let credentials = SecureVaultModels.WebsiteCredentials(account: account, password: passwordData)
do {
guard try !vault.hasAccountFor(username: account.username, domain: account.domain) else {
delegate?.autofillLoginDetailsViewModelDidAttemptToSaveDuplicateLogin()
return
}
let id = try vault.storeWebsiteCredentials(credentials)
delegate?.autofillLoginDetailsViewModelDidSave()
// Refetch after save to get updated properties like "lastUpdated"
if let newCredential = try vault.websiteCredentialsFor(accountId: id) {
self.updateData(with: newCredential.account)
}
} catch let error {
handleSecureVaultError(error)
}
}
}
private func handleSecureVaultError(_ error: Error) {
if case SecureStorageError.duplicateRecord = error {
delegate?.autofillLoginDetailsViewModelDidAttemptToSaveDuplicateLogin()
} else {
Pixel.fire(pixel: .secureVaultError, error: error)
}
}
func delete() {
guard let account = account else {
assertionFailure("Trying to delete account, but the account doesn't exist")
return
}
delegate?.autofillLoginDetailsViewModelDelete(account: account, title: headerViewModel.title)
}
func openUrl() {
guard let url = account?.domain?.toTrimmedURL else { return }
LaunchTabNotification.postLaunchTabNotification(urlString: url.absoluteString)
delegate?.autofillLoginDetailsViewModelDismiss()
}
func openPrivateEmailURL() {
LaunchTabNotification.postLaunchTabNotification(urlString: Constants.privateEmailURL.absoluteString)
delegate?.autofillLoginDetailsViewModelDismiss()
}
func togglePrivateEmailStatus() {
Task { try await togglePrivateEmailStatus() }
}
private func getPrivateEmailStatus() async throws {
guard emailManager.isSignedIn else {
throw AliasRequestError.signedOut
}
guard username != "",
emailManager.isPrivateEmail(email: username) else {
throw AliasRequestError.notFound
}
do {
setLoadingStatus(true)
let result = try await emailManager.getStatusFor(email: username)
setLoadingStatus(false)
setPrivateEmailStatus(result)
} catch {
setLoadingStatus(false)
setPrivateEmailStatus(.error)
}
}
private func togglePrivateEmailStatus() async throws {
guard emailManager.isSignedIn else {
throw AliasRequestError.signedOut
}
guard username != "",
emailManager.isPrivateEmail(email: username) else {
throw AliasRequestError.notFound
}
do {
setLoadingStatus(true)
var result: EmailAliasStatus
if privateEmailStatus == .active {
result = try await emailManager.setStatusFor(email: username, active: false)
} else {
result = try await emailManager.setStatusFor(email: username, active: true)
}
setPrivateEmailStatus(result)
setLoadingStatus(false)
} catch {
setLoadingStatus(false)
setPrivateEmailStatus(.error)
}
}
func refreshprivateEmailStatusBool() {
privateEmailStatusBool = privateEmailStatus == .active ? true : false
}
@MainActor
private func setPrivateEmailStatus(_ status: EmailAliasStatus) {
hasValidPrivateEmail = true
privateEmailStatus = status
privateEmailStatusBool = status == .active ? true : false
}
@MainActor
private func setLoadingStatus(_ status: Bool) {
if status == true {
privateEmailRequestInProgress = true
} else {
privateEmailRequestInProgress = false
}
}
@objc func showLoader() {
privateEmailRequestInProgress = true
}
}
// swiftlint:enable type_body_length
final class AutofillLoginDetailsHeaderViewModel: ObservableObject {
private var dateFormatter: DateFormatter = {
let dateFormatter = DateFormatter()
dateFormatter.dateStyle = .medium
dateFormatter.timeStyle = .short
return dateFormatter
}()
@Published var title: String = ""
@Published var subtitle: String = ""
@Published var domain: String = ""
@Published var preferredFakeFaviconLetters: String?
func updateData(with account: SecureVaultModels.WebsiteAccount, tld: TLD, autofillDomainNameUrlMatcher: AutofillDomainNameUrlMatcher, autofillDomainNameUrlSort: AutofillDomainNameUrlSort) {
self.title = account.name(tld: tld, autofillDomainNameUrlMatcher: autofillDomainNameUrlMatcher)
self.subtitle = UserText.autofillLoginDetailsLastUpdated(for: (dateFormatter.string(from: account.lastUpdated)))
self.domain = account.domain ?? ""
// Update favicon
let accountName = account.name(tld: tld, autofillDomainNameUrlMatcher: autofillDomainNameUrlMatcher)
let accountTitle = (account.title?.isEmpty == false) ? account.title! : "#"
self.preferredFakeFaviconLetters = tld.eTLDplus1(accountName) ?? accountTitle
}
}
extension AutofillLoginDetailsViewModel: EmailManagerRequestDelegate {}