410 lines
17 KiB
Swift
410 lines
17 KiB
Swift
// File created from ScreenTemplate
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// $ createScreen.sh Test SettingsIdentityServer
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/*
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Copyright 2019 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import Foundation
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enum SettingsIdentityServerViewModelError: Error {
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case missingIdentityServer
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case unknown
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}
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enum IdentityServerTermsStatus {
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case noTerms
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case terms(agreed: Bool)
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}
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enum IdentityServerValidity {
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case invalid
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case valid(status: IdentityServerTermsStatus)
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}
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final class SettingsIdentityServerViewModel: SettingsIdentityServerViewModelType {
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// MARK: - Properties
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// MARK: Private
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private let session: MXSession
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private var identityService: MXIdentityService?
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private var serviceTerms: MXServiceTerms?
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// MARK: Public
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weak var viewDelegate: SettingsIdentityServerViewModelViewDelegate?
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var identityServer: String?
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// MARK: - Setup
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init(session: MXSession) {
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self.session = session
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}
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// MARK: - Public
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func process(viewAction: SettingsIdentityServerViewAction) {
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switch viewAction {
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case .load:
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self.load()
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case .add(identityServer: let identityServer):
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self.addIdentityServer(identityServer)
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case .change(identityServer: let identityServer):
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self.changeIdentityServer(identityServer)
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case .disconnect:
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self.disconnect()
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}
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}
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// MARK: - Private -
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// MARK: - Actions
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private func load() {
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self.refreshIdentityServerViewState()
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}
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// MARK: Add IS
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private func addIdentityServer(_ newIdentityServer: String) {
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self.checkCanAddIdentityServer(newIdentityServer: newIdentityServer,
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viewStateUpdate: { (viewState) in
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self.update(viewState: viewState)
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},
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canAddcompletion: {
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self.updateIdentityServerAndRefreshViewState(with: newIdentityServer)
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})
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}
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private func checkCanAddIdentityServer(newIdentityServer: String,
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viewStateUpdate: @escaping (SettingsIdentityServerViewState) -> Void,
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canAddcompletion: @escaping(() -> Void)) {
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viewStateUpdate(.loading)
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self.checkIdentityServerValidity(identityServer: newIdentityServer) { (identityServerValidityResponse) in
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MXLog.debug("[SettingsIdentityServerViewModel] checkCanAddIdentityServer: \(newIdentityServer). Validity: \(identityServerValidityResponse)")
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switch identityServerValidityResponse {
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case .success(let identityServerValidity):
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switch identityServerValidity {
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case .invalid:
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// Present invalid IS alert
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viewStateUpdate(.alert(alert: SettingsIdentityServerAlert.addActionAlert(.invalidIdentityServer(newHost: newIdentityServer)), onContinue: {}))
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case .valid(status: let termsStatus):
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switch termsStatus {
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case .noTerms:
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viewStateUpdate(.alert(alert: SettingsIdentityServerAlert.addActionAlert(.noTerms(newHost: newIdentityServer)), onContinue: {
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viewStateUpdate(.loading)
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canAddcompletion()
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}))
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case .terms(agreed: let termsAgreed):
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if termsAgreed {
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canAddcompletion()
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} else {
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self.accessToken(identityServer: newIdentityServer) { (response) in
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switch response {
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case .success(let accessToken):
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guard let accessToken = accessToken else {
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MXLog.debug("[SettingsIdentityServerViewModel] accessToken: Error: No access token")
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viewStateUpdate(.error(SettingsIdentityServerViewModelError.unknown))
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return
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}
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// Present terms
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viewStateUpdate(.presentTerms(session: self.session, accessToken: accessToken, baseUrl: newIdentityServer, onComplete: { (areTermsAccepted) in
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if areTermsAccepted {
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canAddcompletion()
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} else {
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viewStateUpdate(.alert(alert: SettingsIdentityServerAlert.addActionAlert(.termsNotAccepted(newHost: newIdentityServer)), onContinue: {}))
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}
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}))
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case .failure(let error):
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self.update(viewState: .error(error))
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}
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}
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}
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}
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}
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case .failure(let error):
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viewStateUpdate(.error(error))
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}
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}
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}
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// MARK: Change IS
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private func changeIdentityServer(_ newIdentityServer: String) {
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guard let identityServer = self.identityServer else {
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return
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}
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let viewStateUpdate: (SettingsIdentityServerViewState) -> Void = { (viewState) in
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// Convert states for .addActionAlert and .disconnectActionAlert to .changeActionAlert
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var changeViewState = viewState
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switch viewState {
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case .alert(let alert, let onContinue):
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switch alert {
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case .addActionAlert(.invalidIdentityServer(let newHost)):
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changeViewState = .alert(
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alert: SettingsIdentityServerAlert.changeActionAlert(.invalidIdentityServer(newHost: newHost)),
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onContinue: onContinue)
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case .addActionAlert(.noTerms(let newHost)):
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changeViewState = .alert(
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alert: SettingsIdentityServerAlert.changeActionAlert(.noTerms(newHost: newHost)),
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onContinue: onContinue)
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case .addActionAlert(.termsNotAccepted(let newHost)):
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changeViewState = .alert(
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alert: SettingsIdentityServerAlert.changeActionAlert(.termsNotAccepted(newHost: newHost)),
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onContinue: onContinue)
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case .disconnectActionAlert(.stillSharing3Pids(let oldHost)):
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changeViewState = .alert(
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alert: SettingsIdentityServerAlert.changeActionAlert(.stillSharing3Pids(oldHost: oldHost, newHost: newIdentityServer)),
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onContinue: onContinue)
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case .disconnectActionAlert(.doubleConfirmation(let oldHost)):
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changeViewState = .alert(
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alert: SettingsIdentityServerAlert.changeActionAlert(.doubleConfirmation(oldHost: oldHost, newHost: newIdentityServer)),
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onContinue: onContinue)
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default:
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break
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}
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default:
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break
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}
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self.update(viewState: changeViewState)
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}
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self.checkCanAddIdentityServer(newIdentityServer: newIdentityServer, viewStateUpdate: viewStateUpdate) {
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self.checkCanDisconnectIdentityServer(identityServer: identityServer, viewStateUpdate: viewStateUpdate, canDisconnectCompletion: {
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self.update(viewState: .loading)
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self.disconnectIdentityServer(refreshViewState: false)
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self.updateIdentityServerAndRefreshViewState(with: newIdentityServer)
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})
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}
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}
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// MARK: Disconnect IS
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private func disconnect() {
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guard let identityServer = self.identityServer else {
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return
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}
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self.checkCanDisconnectIdentityServer(identityServer: identityServer,
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viewStateUpdate: { (viewState) in
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self.update(viewState: viewState)
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},
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canDisconnectCompletion: {
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self.update(viewState: .loading)
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self.disconnectIdentityServer()
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})
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}
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private func disconnectIdentityServer(refreshViewState: Bool = true) {
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// TODO: Make a /account/logout request
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if refreshViewState {
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self.updateIdentityServerAndRefreshViewState(with: nil)
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}
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}
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private func checkCanDisconnectIdentityServer(identityServer: String,
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viewStateUpdate: @escaping (SettingsIdentityServerViewState) -> Void,
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canDisconnectCompletion: @escaping(() -> Void)) {
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self.update(viewState: .loading)
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self.checkExistingDataOnIdentityServer { (response) in
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switch response {
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case .success(let existingData):
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if existingData {
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viewStateUpdate(.alert(alert: SettingsIdentityServerAlert.disconnectActionAlert(.stillSharing3Pids(oldHost: identityServer)),
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onContinue: canDisconnectCompletion))
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} else {
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viewStateUpdate(.alert(alert: SettingsIdentityServerAlert.disconnectActionAlert(.doubleConfirmation(oldHost: identityServer)),
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onContinue: canDisconnectCompletion))
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}
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case .failure(let error):
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viewStateUpdate( .error(error))
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}
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}
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}
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// MARK: - Model update
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private func update(viewState: SettingsIdentityServerViewState) {
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self.viewDelegate?.settingsIdentityServerViewModel(self, didUpdateViewState: viewState)
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}
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private func updateIdentityServerAndRefreshViewState(with identityServer: String?) {
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self.accessToken(identityServer: identityServer) { (response) in
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switch response {
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case .success(let accessToken):
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self.session.setIdentityServer(identityServer, andAccessToken: accessToken)
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self.session.setAccountDataIdentityServer(identityServer, success: {
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self.refreshIdentityServerViewState()
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}, failure: { error in
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self.update(viewState: .error(error ?? SettingsIdentityServerViewModelError.unknown))
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})
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case .failure(let error):
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self.update(viewState: .error(error))
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}
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}
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}
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private func refreshIdentityServerViewState() {
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if let identityService = self.session.identityService {
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let host = identityService.identityServer
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self.identityServer = host
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self.update(viewState: .loaded(displayMode: .identityServer(host: host)))
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} else {
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self.update(viewState: .loaded(displayMode: .noIdentityServer))
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}
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}
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// MARK: - Helpers
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private func checkExistingDataOnIdentityServer(completion: @escaping (_ response: MXResponse<Bool>) -> Void) {
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self.session.matrixRestClient.thirdPartyIdentifiers { (thirdPartyIDresponse) in
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switch thirdPartyIDresponse {
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case .success(let thirdPartyIdentifiers):
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guard let thirdPartyIdentifiers = thirdPartyIdentifiers else {
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completion(.success(false))
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return
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}
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if thirdPartyIdentifiers.isEmpty {
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completion(.success(false))
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} else {
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let mx3Pids = SettingsIdentityServerViewModel.threePids(from: thirdPartyIdentifiers)
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self.areThereThreePidsDiscoverable(mx3Pids, completion: { discoverable3pidsResponse in
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switch discoverable3pidsResponse {
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case .success(let isThereDiscoverable3pids):
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completion(.success(isThereDiscoverable3pids))
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case .failure(let error):
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completion(.failure(error))
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}
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})
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}
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case .failure(let error):
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completion(.failure(error))
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}
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}
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}
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private func accessToken(identityServer: String?, completion: @escaping (_ response: MXResponse<String?>) -> Void) {
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guard let identityServer = identityServer, let identityServerURL = URL(string: identityServer) else {
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completion(.success(nil))
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return
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}
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let restClient: MXRestClient = self.session.matrixRestClient
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let identityService = MXIdentityService(identityServer: identityServerURL, accessToken: nil, homeserverRestClient: restClient)
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identityService.accessToken { (response) in
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self.identityService = nil
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completion(response)
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}
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self.identityService = identityService
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}
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@discardableResult
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private func areThereThreePidsDiscoverable(_ threePids: [MX3PID], completion: @escaping (_ response: MXResponse<Bool>) -> Void) -> MXHTTPOperation? {
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guard let identityService = self.session.identityService else {
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completion(.failure(SettingsIdentityServerViewModelError.missingIdentityServer))
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return nil
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}
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return identityService.lookup3PIDs(threePids) { lookupResponse in
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switch lookupResponse {
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case .success(let threePids):
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completion(.success(threePids.isEmpty == false))
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case .failure(let error):
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completion(.failure(error))
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}
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}
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}
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private func checkIdentityServerValidity(identityServer: String, completion: @escaping (_ response: MXResponse<IdentityServerValidity>) -> Void) {
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guard let identityServerURL = URL(string: identityServer) else {
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completion(.success(.invalid))
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return
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}
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let restClient: MXRestClient = self.session.matrixRestClient
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let identityService = MXIdentityService(identityServer: identityServerURL, accessToken: nil, homeserverRestClient: restClient)
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// First, check the server
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identityService.pingIdentityServer { response in
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self.identityService = nil
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switch response {
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case .success:
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// Them, check if there are terms to accept
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let serviceTerms = MXServiceTerms(baseUrl: identityService.identityServer, serviceType: MXServiceTypeIdentityService, matrixSession: self.session, accessToken: nil)
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serviceTerms.areAllTermsAgreed({ (agreedTermsProgress) in
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self.serviceTerms = nil
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if agreedTermsProgress.totalUnitCount == 0 {
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completion(.success(IdentityServerValidity.valid(status: .noTerms)))
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} else {
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completion(.success(IdentityServerValidity.valid(status: .terms(agreed: agreedTermsProgress.isFinished))))
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}
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}, failure: { (error) in
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self.serviceTerms = nil
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completion(.failure(error))
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})
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self.serviceTerms = serviceTerms
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case .failure(let error):
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guard let nsError = error as NSError? else {
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completion(.failure(error))
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return
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}
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if nsError.domain == MXIdentityServerRestClientErrorDomain
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|| (nsError.domain == NSURLErrorDomain
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&& (nsError.code == NSURLErrorCannotFindHost
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|| nsError.code == NSURLErrorCancelled)) {
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completion(.success(.invalid))
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} else {
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completion(.failure(error))
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}
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}
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}
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self.identityService = identityService
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}
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private class func threePids(from thirdPartyIdentifiers: [MXThirdPartyIdentifier]) -> [MX3PID] {
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return thirdPartyIdentifiers.map({ (thirdPartyIdentifier) -> MX3PID in
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return MX3PID(medium: MX3PID.Medium(identifier: thirdPartyIdentifier.medium), address: thirdPartyIdentifier.address)
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})
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}
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}
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