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InAppManager.swift
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InAppManager.swift
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//
// Copyright © 2018 Iterable. All rights reserved.
//
import Foundation
import UIKit
protocol InAppDisplayChecker {
func isOkToShowNow(message: IterableInAppMessage) -> Bool
}
protocol IterableInternalInAppManagerProtocol: IterableInAppManagerProtocol, InAppNotifiable, InAppDisplayChecker {
func start() -> Pending<Bool, Error>
/// Use this method to handle clicks in InApp Messages
/// - parameter clickedUrl: The url that is clicked.
/// - parameter message: The message where the url was clicked.
/// - parameter location: The location `inbox` or `inApp` where the message was shown.
/// - parameter inboxSessionId: The ID of the inbox session that the message originates from.
func handleClick(clickedUrl url: URL?, forMessage message: IterableInAppMessage, location: InAppLocation, inboxSessionId: String?)
/// - parameter message: The message to remove.
/// - parameter location: The location from where this message was shown. `inbox` or `inApp`.
/// - parameter source: The source of deletion `inboxSwipe` or `deleteButton`.`
/// - parameter inboxSessionId: The ID of the inbox session that the message originates from.
func remove(message: IterableInAppMessage, location: InAppLocation, source: InAppDeleteSource, inboxSessionId: String?)
/// - parameter message: The message to remove.
/// - parameter location: The location from where this message was shown. `inbox` or `inApp`.
/// - parameter source: The source of deletion `inboxSwipe` or `deleteButton`.`
/// - parameter inboxSessionId: The ID of the inbox session that the message originates from.
/// - parameter successHandler: The callback which returns `success.
/// - parameter failureHandler: The callback which returns `failure.
func remove(message: IterableInAppMessage, location: InAppLocation, source: InAppDeleteSource, inboxSessionId: String?, successHandler: OnSuccessHandler?, failureHandler: OnFailureHandler?)
}
class InAppManager: NSObject, IterableInternalInAppManagerProtocol {
init(requestHandler: RequestHandlerProtocol,
deviceMetadata: DeviceMetadata,
fetcher: InAppFetcherProtocol,
displayer: InAppDisplayerProtocol,
persister: InAppPersistenceProtocol,
inAppDelegate: IterableInAppDelegate,
urlDelegate: IterableURLDelegate?,
customActionDelegate: IterableCustomActionDelegate?,
urlOpener: UrlOpenerProtocol,
allowedProtocols: [String],
applicationStateProvider: ApplicationStateProviderProtocol,
notificationCenter: NotificationCenterProtocol,
dateProvider: DateProviderProtocol,
moveToForegroundSyncInterval: Double) {
ITBInfo()
self.requestHandler = requestHandler
self.deviceMetadata = deviceMetadata
self.fetcher = fetcher
self.displayer = displayer
self.persister = persister
self.inAppDelegate = inAppDelegate
self.urlDelegate = urlDelegate
self.customActionDelegate = customActionDelegate
self.urlOpener = urlOpener
self.allowedProtocols = allowedProtocols
self.applicationStateProvider = applicationStateProvider
self.notificationCenter = notificationCenter
self.dateProvider = dateProvider
self.moveToForegroundSyncInterval = moveToForegroundSyncInterval
super.init()
initializeMessagesMap()
self.notificationCenter.addObserver(self,
selector: #selector(onAppEnteredForeground(notification:)),
name: UIApplication.didBecomeActiveNotification,
object: nil)
}
deinit {
ITBInfo()
notificationCenter.removeObserver(self)
}
// MARK: - IterableInAppManagerProtocol
var isAutoDisplayPaused: Bool {
get {
autoDisplayPaused
}
set {
autoDisplayPaused = newValue
if !autoDisplayPaused {
_ = scheduleSync()
}
}
}
func getMessages() -> [IterableInAppMessage] {
ITBInfo()
return Array(messagesMap.values.filter { InAppManager.isValid(message: $0, currentDate: self.dateProvider.currentDate) })
}
func getInboxMessages() -> [IterableInAppMessage] {
ITBInfo()
return Array(messagesMap.values.filter { InAppManager.isValid(message: $0, currentDate: self.dateProvider.currentDate) && $0.saveToInbox })
}
func getUnreadInboxMessagesCount() -> Int {
getInboxMessages().filter { $0.read == false }.count
}
func show(message: IterableInAppMessage) {
ITBInfo()
show(message: message, consume: true, callback: nil)
}
func show(message: IterableInAppMessage, consume: Bool = true, callback: ITBURLCallback? = nil) {
ITBInfo()
// This is public (via public protocol implementation), so make sure we call from Main Thread
DispatchQueue.main.async {[weak self] in
self?.showInternal(message: message, consume: consume, callback: callback)
}
}
func remove(message: IterableInAppMessage, location: InAppLocation) {
ITBInfo()
remove(message: message, location: location, successHandler: nil, failureHandler: nil)
}
func remove(message: IterableInAppMessage, location: InAppLocation, successHandler: OnSuccessHandler? = nil, failureHandler: OnFailureHandler? = nil) {
removePrivate(message: message, location: location, successHandler: successHandler, failureHandler: failureHandler)
}
func remove(message: IterableInAppMessage, location: InAppLocation, source: InAppDeleteSource) {
remove(message: message, location: location, source: source, successHandler: nil, failureHandler: nil)
}
func remove(message: IterableInAppMessage, location: InAppLocation, source: InAppDeleteSource, successHandler: OnSuccessHandler? = nil, failureHandler: OnFailureHandler? = nil) {
removePrivate(message: message, location: location, source: source, successHandler: successHandler, failureHandler: failureHandler)
}
func remove(message: IterableInAppMessage, location: InAppLocation, source: InAppDeleteSource, inboxSessionId: String?) {
ITBInfo()
remove(message: message, location: location, source: source, inboxSessionId: inboxSessionId, successHandler: nil, failureHandler: nil)
}
func remove(message: IterableInAppMessage, location: InAppLocation, source: InAppDeleteSource, inboxSessionId: String? = nil, successHandler: OnSuccessHandler? = nil, failureHandler: OnFailureHandler? = nil) {
removePrivate(message: message, location: location, source: source, inboxSessionId: inboxSessionId, successHandler: successHandler, failureHandler: failureHandler)
}
func set(read: Bool, forMessage message: IterableInAppMessage) {
set(read: read, forMessage: message, successHandler: nil, failureHandler: nil)
}
func set(read: Bool, forMessage message: IterableInAppMessage, successHandler: OnSuccessHandler? = nil, failureHandler: OnFailureHandler? = nil) {
updateMessage(message, read: read).onSuccess { [weak self] _ in
successHandler?([:])
self?.callbackQueue.async { [weak self] in
self?.notificationCenter.post(name: .iterableInboxChanged, object: self, userInfo: nil)
}
}.onError { [weak self] _ in
failureHandler?(self?.description, nil)
}
}
func getMessage(withId id: String) -> IterableInAppMessage? {
messagesMap[id]
}
// MARK: - IterableInternalInAppManagerProtocol
func start() -> Pending<Bool, Error> {
ITBInfo()
if messagesMap.values.filter({ $0.saveToInbox }).count > 0 {
callbackQueue.async { [weak self] in
self?.notificationCenter.post(name: .iterableInboxChanged, object: self, userInfo: nil)
}
}
return scheduleSync()
}
func handleClick(clickedUrl url: URL?, forMessage message: IterableInAppMessage, location: InAppLocation, inboxSessionId: String?) {
guard let theUrl = url, let inAppClickedUrl = InAppHelper.parse(inAppUrl: theUrl) else {
ITBError("Could not parse url: \(url?.absoluteString ?? "nil")")
return
}
switch inAppClickedUrl {
case let .iterableCustomAction(name: iterableCustomActionName):
handleIterableCustomAction(name: iterableCustomActionName, forMessage: message, location: location, inboxSessionId: inboxSessionId)
case let .customAction(name: customActionName):
handleUrlOrAction(urlOrAction: customActionName)
case let .localResource(name: localResourceName):
handleUrlOrAction(urlOrAction: localResourceName)
case .regularUrl:
handleUrlOrAction(urlOrAction: theUrl.absoluteString)
}
}
func remove(message: IterableInAppMessage) {
ITBInfo()
remove(message: message, successHandler: nil, failureHandler: nil)
}
func remove(message: IterableInAppMessage, successHandler: OnSuccessHandler?, failureHandler: OnFailureHandler?) {
removePrivate(message: message, location: .inApp, source: nil, successHandler: successHandler, failureHandler: failureHandler)
}
// MARK: - Private/Internal
@objc private func onAppEnteredForeground(notification _: Notification) {
ITBInfo()
let waitTime = InAppManager.getWaitTimeInterval(fromLastTime: lastSyncTime, currentTime: dateProvider.currentDate, gap: moveToForegroundSyncInterval)
if waitTime <= 0 {
_ = scheduleSync()
} else {
ITBInfo("can't sync now, need to wait: \(waitTime)")
}
}
private func synchronize(appIsReady: Bool) -> Pending<Bool, Error> {
ITBInfo()
return fetcher.fetch()
.map { [weak self] in
self?.mergeMessages($0) ?? MergeMessagesResult(inboxChanged: false, messagesMap: [:], deliveredMessages: [])
}
.map { [weak self] in
self?.processMergedMessages(appIsReady: appIsReady, mergeMessagesResult: $0) ?? true
}
}
/// `messages` are new messages coming from the server
private func mergeMessages(_ messages: [IterableInAppMessage]) -> MergeMessagesResult {
MessagesObtainedHandler(messagesMap: messagesMap, messages: messages).handle()
}
private func processMergedMessages(appIsReady: Bool, mergeMessagesResult: MergeMessagesResult) -> Bool {
if appIsReady {
processAndShowMessage(messagesMap: mergeMessagesResult.messagesMap)
} else {
messagesMap = mergeMessagesResult.messagesMap
}
// track in-app delivery
mergeMessagesResult.deliveredMessages.forEach {
requestHandler?.track(inAppDelivery: $0,
onSuccess: nil,
onFailure: nil)
}
finishSync(inboxChanged: mergeMessagesResult.inboxChanged)
return true
}
private func finishSync(inboxChanged: Bool) {
ITBInfo()
if inboxChanged {
callbackQueue.async { [weak self] in
self?.notificationCenter.post(name: .iterableInboxChanged, object: self, userInfo: nil)
}
}
persister.persist(messagesMap.values)
lastSyncTime = dateProvider.currentDate
}
private func getMessagesMap(fromMessagesProcessorResult messagesProcessorResult: MessagesProcessorResult) -> OrderedDictionary<String, IterableInAppMessage> {
switch messagesProcessorResult {
case let .noShow(messagesMap: messagesMap):
return messagesMap
case .show(message: _, messagesMap: let messagesMap):
return messagesMap
}
}
// Not a pure function.
private func showMessage(fromMessagesProcessorResult messagesProcessorResult: MessagesProcessorResult) {
if case let MessagesProcessorResult.show(message, _) = messagesProcessorResult {
lastDisplayTime = dateProvider.currentDate
ITBDebug("Setting last display time: \(String(describing: lastDisplayTime))")
show(message: message, consume: !message.saveToInbox)
}
}
private func processAndShowMessage(messagesMap: OrderedDictionary<String, IterableInAppMessage>) {
var processor = MessagesProcessor(inAppDelegate: inAppDelegate, inAppDisplayChecker: self, messagesMap: messagesMap)
let messagesProcessorResult = processor.processMessages()
self.messagesMap = getMessagesMap(fromMessagesProcessorResult: messagesProcessorResult)
showMessage(fromMessagesProcessorResult: messagesProcessorResult)
}
private func showInternal(message: IterableInAppMessage,
consume: Bool,
callback: ITBURLCallback? = nil) {
ITBInfo()
guard Thread.isMainThread else {
ITBError("This must be called from the main thread")
return
}
let onClickCallback: (URL) -> Void = { [weak self] url in
ITBDebug("in-app clicked")
// call the client callback, if present
_ = callback?(url)
// in addition perform action or url delegate task
self?.handleClick(clickedUrl: url, forMessage: message, location: .inApp, inboxSessionId: nil)
// set the dismiss time
self?.lastDismissedTime = self?.dateProvider.currentDate
ITBDebug("Setting last dismissed time: \(String(describing: self?.lastDismissedTime))")
// check if we need to process more in-apps
self?.scheduleNextInAppMessage()
if consume {
self?.requestHandler?.inAppConsume(message.messageId,
onSuccess: nil,
onFailure: nil)
}
}
switch displayer.showInApp(message: message, onClickCallback: onClickCallback) {
case let .notShown(reason):
ITBError("Could not show message: \(reason)")
case .shown:
ITBDebug("in-app shown")
set(read: true, forMessage: message)
updateMessage(message, didProcessTrigger: true, consumed: consume)
}
}
// This method schedules next triggered message after showing a message
private func scheduleNextInAppMessage() {
ITBDebug()
let waitTimeInterval = getInAppShowingWaitTimeInterval()
if waitTimeInterval > 0 {
ITBDebug("Need to wait for: \(waitTimeInterval)")
scheduleQueue.asyncAfter(deadline: .now() + waitTimeInterval) { [weak self] in
self?.scheduleNextInAppMessage()
}
} else {
_ = InAppManager.getAppIsReady(applicationStateProvider: applicationStateProvider, displayer: displayer).map { [weak self] appIsActive in
if appIsActive {
if let messagesMap = self?.messagesMap {
self?.processAndShowMessage(messagesMap: messagesMap)
self?.persister.persist(messagesMap.values)
}
}
}
}
}
@discardableResult
private func updateMessage(_ message: IterableInAppMessage,
read: Bool? = nil,
didProcessTrigger: Bool? = nil,
consumed: Bool? = nil) -> Pending<Bool, IterableError> {
ITBDebug()
let result = Fulfill<Bool, IterableError>()
updateQueue.async { [weak self] in
self?.updateMessageSync(message, read: read, didProcessTrigger: didProcessTrigger, consumed: consumed)
result.resolve(with: true)
}
return result
}
private func updateMessageSync(_ message: IterableInAppMessage,
read: Bool? = nil,
didProcessTrigger: Bool? = nil,
consumed: Bool? = nil) {
ITBDebug()
let toUpdate = message
if let read = read {
toUpdate.read = read
}
if let didProcessTrigger = didProcessTrigger {
toUpdate.didProcessTrigger = didProcessTrigger
}
if let consumed = consumed {
toUpdate.consumed = consumed
}
messagesMap.updateValue(toUpdate, forKey: message.messageId)
persister.persist(messagesMap.values)
}
// How long do we have to wait before showing the message
// > 0 means wait, otherwise we are good to show
private func getInAppShowingWaitTimeInterval() -> TimeInterval {
InAppManager.getWaitTimeInterval(fromLastTime: lastDismissedTime, currentTime: dateProvider.currentDate, gap: moveToForegroundSyncInterval)
}
// How long do we have to wait?
// > 0 means wait, otherwise we are good to show
private static func getWaitTimeInterval(fromLastTime lastTime: Date?, currentTime: Date, gap: TimeInterval) -> TimeInterval {
if let lastTime = lastTime {
// if it has been shown once
let nextShowingTime = Date(timeInterval: gap + 0.1, since: lastTime)
if currentTime >= nextShowingTime {
return 0.0
} else {
return nextShowingTime.timeIntervalSinceReferenceDate - currentTime.timeIntervalSinceReferenceDate
}
} else {
// we have not shown any messages
return 0.0
}
}
private func handleIterableCustomAction(name: String, forMessage message: IterableInAppMessage, location: InAppLocation, inboxSessionId: String?) {
guard let iterableCustomActionName = IterableCustomActionName(rawValue: name) else {
return
}
switch iterableCustomActionName {
case .delete:
remove(message: message, location: location, source: .deleteButton, inboxSessionId: inboxSessionId)
case .dismiss:
break
}
}
private func handleUrlOrAction(urlOrAction: String) {
guard let action = createAction(fromUrlOrAction: urlOrAction) else {
ITBError("Could not create action from: \(urlOrAction)")
return
}
let context = IterableActionContext(action: action, source: .inApp)
DispatchQueue.main.async { [weak self] in
ActionRunner.execute(action: action,
context: context,
urlHandler: IterableUtil.urlHandler(fromUrlDelegate: self?.urlDelegate, inContext: context),
customActionHandler: IterableUtil.customActionHandler(fromCustomActionDelegate: self?.customActionDelegate, inContext: context),
urlOpener: self?.urlOpener,
allowedProtocols: self?.allowedProtocols ?? [])
}
}
private func createAction(fromUrlOrAction urlOrAction: String) -> IterableAction? {
if let parsedUrl = URL(string: urlOrAction), let _ = parsedUrl.scheme {
return IterableAction.actionOpenUrl(fromUrlString: urlOrAction)
} else {
return IterableAction.action(fromDictionary: ["type": urlOrAction])
}
}
private func initializeMessagesMap() {
let messages = persister.getMessages()
for message in messages {
messagesMap[message.messageId] = message
}
}
// From client side
private func removePrivate(message: IterableInAppMessage,
location: InAppLocation = .inApp,
source: InAppDeleteSource? = nil,
inboxSessionId: String? = nil,
successHandler: OnSuccessHandler? = nil,
failureHandler: OnFailureHandler? = nil) {
ITBInfo()
updateMessage(message, didProcessTrigger: true, consumed: true)
requestHandler?.inAppConsume(message: message,
location: location,
source: source,
inboxSessionId: inboxSessionId,
onSuccess: successHandler,
onFailure: failureHandler)
callbackQueue.async { [weak self] in
self?.notificationCenter.post(name: .iterableInboxChanged, object: self, userInfo: nil)
}
}
private static func isExpired(message: IterableInAppMessage, currentDate: Date) -> Bool {
guard let expiresAt = message.expiresAt else {
return false
}
return currentDate >= expiresAt
}
fileprivate static func isValid(message: IterableInAppMessage, currentDate: Date) -> Bool {
message.consumed == false && isExpired(message: message, currentDate: currentDate) == false
}
fileprivate static func getAppIsReady(applicationStateProvider: ApplicationStateProviderProtocol,
displayer: InAppDisplayerProtocol) -> Fulfill<Bool, Error> {
if Thread.isMainThread {
let ready = (applicationStateProvider.applicationState == .active) && (displayer.isShowingInApp() == false)
return Fulfill(value: ready)
} else {
let result = Fulfill<Bool, Error>()
DispatchQueue.main.async {
let ready = (applicationStateProvider.applicationState == .active) && (displayer.isShowingInApp() == false)
result.resolve(with: ready)
}
return result
}
}
private weak var requestHandler: RequestHandlerProtocol?
private let deviceMetadata: DeviceMetadata
private let fetcher: InAppFetcherProtocol
private let displayer: InAppDisplayerProtocol
private let inAppDelegate: IterableInAppDelegate
private let urlDelegate: IterableURLDelegate?
private let customActionDelegate: IterableCustomActionDelegate?
private let urlOpener: UrlOpenerProtocol
private let allowedProtocols: [String]
private let applicationStateProvider: ApplicationStateProviderProtocol
private let notificationCenter: NotificationCenterProtocol
private let persister: InAppPersistenceProtocol
private var messagesMap = OrderedDictionary<String, IterableInAppMessage>()
private let dateProvider: DateProviderProtocol
private var lastDismissedTime: Date?
private var lastDisplayTime: Date?
private let updateQueue = DispatchQueue(label: "UpdateQueue")
private let scheduleQueue = DispatchQueue(label: "ScheduleQueue")
private let callbackQueue = DispatchQueue(label: "CallbackQueue")
private let syncQueue = DispatchQueue(label: "SyncQueue")
private var syncResult: Pending<Bool, Error>?
private var lastSyncTime: Date?
private var moveToForegroundSyncInterval: Double = 1.0 * 60.0 // don't sync within sixty seconds
private var autoDisplayPaused = false
}
extension InAppManager: InAppNotifiable {
func scheduleSync() -> Pending<Bool, Error> {
ITBInfo()
return InAppManager.getAppIsReady(applicationStateProvider: applicationStateProvider,
displayer: displayer)
.flatMap { self.scheduleSync(appIsReady: $0) }
}
private func scheduleSync(appIsReady: Bool) -> Pending<Bool, Error> {
ITBInfo()
let result = Fulfill<Bool, Error>()
syncQueue.async { [weak self] in
if let syncResult = self?.syncResult {
if syncResult.isResolved() {
self?.syncResult = self?.synchronize(appIsReady: appIsReady)
} else {
self?.syncResult = syncResult.flatMap { _ in self?.synchronize(appIsReady: appIsReady) ?? Fulfill<Bool, Error>(value: true) }
}
} else {
self?.syncResult = self?.synchronize(appIsReady: appIsReady)
}
self?.syncResult?.onSuccess { success in
result.resolve(with: success)
}.onError { error in
result.reject(with: error)
}
}
return result
}
// from server side
func onInAppRemoved(messageId: String) {
ITBInfo()
updateQueue.async { [weak self] in
if let _ = self?.messagesMap.filter({ $0.key == messageId }).first {
if let messagesMap = self?.messagesMap {
self?.messagesMap.removeValue(forKey: messageId)
self?.persister.persist(messagesMap.values)
}
}
}
callbackQueue.async { [weak self] in
self?.notificationCenter.post(name: .iterableInboxChanged, object: self, userInfo: nil)
}
}
func reset() -> Pending<Bool, Error> {
ITBInfo()
let result = Fulfill<Bool, Error>()
syncQueue.async { [weak self] in
self?.messagesMap.reset()
if let messagesMap = self?.messagesMap {
self?.persister.persist(messagesMap.values)
}
self?.callbackQueue.async {
self?.notificationCenter.post(name: .iterableInboxChanged, object: self, userInfo: nil)
result.resolve(with: true)
}
}
return result
}
}
extension InAppManager: InAppDisplayChecker {
func isOkToShowNow(message: IterableInAppMessage) -> Bool {
guard !isAutoDisplayPaused else {
ITBInfo("automatic in-app display has been paused")
return false
}
guard !message.didProcessTrigger else {
ITBInfo("message with id: \(message.messageId) is already processed")
return false
}
guard InAppManager.getWaitTimeInterval(fromLastTime: lastDismissedTime, currentTime: dateProvider.currentDate, gap: moveToForegroundSyncInterval) <= 0 else {
ITBInfo("can't display within configured In-App display interval window")
return false
}
guard InAppManager.getWaitTimeInterval(fromLastTime: lastDisplayTime, currentTime: dateProvider.currentDate, gap: moveToForegroundSyncInterval) <= 0 else {
ITBInfo("can't display within configured In-App display window")
return false
}
return true
}
}