--- /dev/null
+import Foundation
+
+/// The Matomo Tracker is a Swift framework to send analytics to the Matomo server.
+///
+/// ## Basic Usage
+/// * Use the track methods to track your views, events and more.
+final public class MatomoTracker: NSObject {
+
+ /// Defines if the user opted out of tracking. When set to true, every event
+ /// will be discarded immediately. This property is persisted between app launches.
+ @objc public var isOptedOut: Bool {
+ get {
+ return matomoUserDefaults.optOut
+ }
+ set {
+ matomoUserDefaults.optOut = newValue
+ }
+ }
+
+ /// Will be used to associate all future events with a given userID. This property
+ /// is persisted between app launches.
+ @objc public var visitorId: String? {
+ get {
+ return matomoUserDefaults.visitorUserId
+ }
+ set {
+ matomoUserDefaults.visitorUserId = newValue
+ visitor = Visitor.current(in: matomoUserDefaults)
+ }
+ }
+
+ internal var matomoUserDefaults: MatomoUserDefaults
+ private let dispatcher: Dispatcher
+ private var queue: Queue
+ internal let siteId: String
+
+ internal var dimensions: [CustomDimension] = []
+
+ internal var customVariables: [CustomVariable] = []
+
+ /// This logger is used to perform logging of all sorts of Matomo related information.
+ /// Per default it is a `DefaultLogger` with a `minLevel` of `LogLevel.warning`. You can
+ /// set your own Logger with a custom `minLevel` or a complete custom logging mechanism.
+ @objc public var logger: Logger = DefaultLogger(minLevel: .warning)
+
+ /// The `contentBase` is used to build the url of an Event, if the Event hasn't got a url set.
+ /// This autogenerated url will then have the format <contentBase>/<actions>.
+ /// Per default the `contentBase` is http://<Application Bundle Name>.
+ /// Set the `contentBase` to nil, if you don't want to auto generate a url.
+ @objc public var contentBase: URL?
+
+ internal static var _sharedInstance: MatomoTracker?
+
+ /// Create and Configure a new Tracker
+ ///
+ /// - Parameters:
+ /// - siteId: The unique site id generated by the server when a new site was created.
+ /// - queue: The queue to use to store all analytics until it is dispatched to the server.
+ /// - dispatcher: The dispatcher to use to transmit all analytics to the server.
+ required public init(siteId: String, queue: Queue, dispatcher: Dispatcher) {
+ self.siteId = siteId
+ self.queue = queue
+ self.dispatcher = dispatcher
+ self.contentBase = URL(string: "http://\(Application.makeCurrentApplication().bundleIdentifier ?? "unknown")")
+ self.matomoUserDefaults = MatomoUserDefaults(suiteName: "\(siteId)\(dispatcher.baseURL.absoluteString)")
+ self.visitor = Visitor.current(in: matomoUserDefaults)
+ self.session = Session.current(in: matomoUserDefaults)
+ super.init()
+ startNewSession()
+ startDispatchTimer()
+ }
+
+ /// Create and Configure a new Tracker
+ ///
+ /// A volatile memory queue will be used to store the analytics data. All not transmitted data will be lost when the application gets terminated.
+ /// The URLSessionDispatcher will be used to transmit the data to the server.
+ ///
+ /// - Parameters:
+ /// - siteId: The unique site id generated by the server when a new site was created.
+ /// - baseURL: The url of the Matomo server. This url has to end in `piwik.php`.
+ /// - userAgent: An optional parameter for custom user agent.
+ @objc convenience public init(siteId: String, baseURL: URL, userAgent: String? = nil) {
+ assert(baseURL.absoluteString.hasSuffix("piwik.php"), "The baseURL is expected to end in piwik.php")
+
+ let queue = MemoryQueue()
+ let dispatcher = URLSessionDispatcher(baseURL: baseURL, userAgent: userAgent)
+ self.init(siteId: siteId, queue: queue, dispatcher: dispatcher)
+ }
+
+ internal func queue(event: Event) {
+ guard Thread.isMainThread else {
+ DispatchQueue.main.sync {
+ self.queue(event: event)
+ }
+ return
+ }
+ guard !isOptedOut else { return }
+ logger.verbose("Queued event: \(event)")
+ queue.enqueue(event: event)
+ nextEventStartsANewSession = false
+ }
+
+ // MARK: dispatching
+
+ private let numberOfEventsDispatchedAtOnce = 20
+ private(set) var isDispatching = false
+
+
+ /// Manually start the dispatching process. You might want to call this method in AppDelegates `applicationDidEnterBackground` to transmit all data
+ /// whenever the user leaves the application.
+ @objc public func dispatch() {
+ guard !isDispatching else {
+ logger.verbose("MatomoTracker is already dispatching.")
+ return
+ }
+ guard queue.eventCount > 0 else {
+ logger.info("No need to dispatch. Dispatch queue is empty.")
+ startDispatchTimer()
+ return
+ }
+ logger.info("Start dispatching events")
+ isDispatching = true
+ dispatchBatch()
+ }
+
+ private func dispatchBatch() {
+ guard Thread.isMainThread else {
+ DispatchQueue.main.sync {
+ self.dispatchBatch()
+ }
+ return
+ }
+ queue.first(limit: numberOfEventsDispatchedAtOnce) { events in
+ guard events.count > 0 else {
+ // there are no more events queued, finish dispatching
+ self.isDispatching = false
+ self.startDispatchTimer()
+ self.logger.info("Finished dispatching events")
+ return
+ }
+ self.dispatcher.send(events: events, success: {
+ DispatchQueue.main.async {
+ self.queue.remove(events: events, completion: {
+ self.logger.info("Dispatched batch of \(events.count) events.")
+ DispatchQueue.main.async {
+ self.dispatchBatch()
+ }
+ })
+ }
+ }, failure: { error in
+ self.isDispatching = false
+ self.startDispatchTimer()
+ self.logger.warning("Failed dispatching events with error \(error)")
+ })
+ }
+ }
+
+ // MARK: dispatch timer
+
+ @objc public var dispatchInterval: TimeInterval = 30.0 {
+ didSet {
+ startDispatchTimer()
+ }
+ }
+ private var dispatchTimer: Timer?
+
+ private func startDispatchTimer() {
+ guard Thread.isMainThread else {
+ DispatchQueue.main.sync {
+ self.startDispatchTimer()
+ }
+ return
+ }
+ guard dispatchInterval > 0 else { return } // Discussion: Do we want the possibility to dispatch synchronous? That than would be dispatchInterval = 0
+ if let dispatchTimer = dispatchTimer {
+ dispatchTimer.invalidate()
+ self.dispatchTimer = nil
+ }
+ self.dispatchTimer = Timer.scheduledTimer(timeInterval: dispatchInterval, target: self, selector: #selector(dispatch), userInfo: nil, repeats: false)
+ }
+
+ internal var visitor: Visitor
+ internal var session: Session
+ internal var nextEventStartsANewSession = true
+
+ internal var campaignName: String? = nil
+ internal var campaignKeyword: String? = nil
+
+ /// Adds the name and keyword for the current campaign.
+ /// This is usually very helpfull if you use deeplinks into your app.
+ ///
+ /// More information on campaigns: [https://matomo.org/docs/tracking-campaigns/](https://matomo.org/docs/tracking-campaigns/)
+ ///
+ /// - Parameters:
+ /// - name: The name of the campaign.
+ /// - keyword: The keyword of the campaign.
+ @objc public func trackCampaign(name: String?, keyword: String?) {
+ campaignName = name
+ campaignKeyword = keyword
+ }
+
+ /// There are several ways to track content impressions and interactions manually, semi-automatically and automatically. Please be aware that content impressions will be tracked using bulk tracking which will always send a POST request, even if GET is configured which is the default. For more details have a look at the in-depth guide to Content Tracking.
+ /// More information on content: [https://matomo.org/docs/content-tracking/](https://matomo.org/docs/content-tracking/)
+ ///
+ /// - Parameters:
+ /// - name: The name of the content. For instance 'Ad Foo Bar'
+ /// - piece: The actual content piece. For instance the path to an image, video, audio, any text
+ /// - target: The target of the content. For instance the URL of a landing page
+ /// - interaction: The name of the interaction with the content. For instance a 'click'
+ @objc public func trackContentImpression(name: String, piece: String?, target: String?) {
+ track(Event(tracker: self, action: [], contentName: name, contentPiece: piece, contentTarget: target))
+ }
+ @objc public func trackContentInteraction(name: String, interaction: String, piece: String?, target: String?) {
+ track(Event(tracker: self, action: [], contentName: name, contentInteraction: interaction, contentPiece: piece, contentTarget: target))
+ }
+}
+
+extension MatomoTracker {
+ /// Starts a new Session
+ ///
+ /// Use this function to manually start a new Session. A new Session will be automatically created only on app start.
+ /// You can use the AppDelegates `applicationWillEnterForeground` to start a new visit whenever the app enters foreground.
+ public func startNewSession() {
+ matomoUserDefaults.previousVisit = matomoUserDefaults.currentVisit
+ matomoUserDefaults.currentVisit = Date()
+ matomoUserDefaults.totalNumberOfVisits += 1
+ self.session = Session.current(in: matomoUserDefaults)
+ }
+}
+
+extension MatomoTracker {
+
+ /// Tracks a custom Event
+ ///
+ /// - Parameter event: The event that should be tracked.
+ public func track(_ event: Event) {
+ queue(event: event)
+
+ if (event.campaignName == campaignName && event.campaignKeyword == campaignKeyword) {
+ campaignName = nil
+ campaignKeyword = nil
+ }
+ }
+
+ /// Tracks a screenview.
+ ///
+ /// This method can be used to track hierarchical screen names, e.g. screen/settings/register. Use this to create a hierarchical and logical grouping of screen views in the Matomo web interface.
+ ///
+ /// - Parameter view: An array of hierarchical screen names.
+ /// - Parameter url: The optional url of the page that was viewed.
+ /// - Parameter dimensions: An optional array of dimensions, that will be set only in the scope of this view.
+ public func track(view: [String], url: URL? = nil, dimensions: [CustomDimension] = []) {
+ let event = Event(tracker: self, action: view, url: url, dimensions: dimensions)
+ queue(event: event)
+ }
+
+ /// Tracks an event as described here: https://matomo.org/docs/event-tracking/
+ ///
+ /// - Parameters:
+ /// - category: The Category of the Event
+ /// - action: The Action of the Event
+ /// - name: The optional name of the Event
+ /// - value: The optional value of the Event
+ /// - dimensions: An optional array of dimensions, that will be set only in the scope of this event.
+ /// - url: The optional url of the page that was viewed.
+ public func track(eventWithCategory category: String, action: String, name: String? = nil, value: Float? = nil, dimensions: [CustomDimension] = [], url: URL? = nil) {
+ let event = Event(tracker: self, action: [], url: url, eventCategory: category, eventAction: action, eventName: name, eventValue: value, dimensions: dimensions)
+ queue(event: event)
+ }
+}
+
+extension MatomoTracker {
+
+ /// Tracks a search result page as described here: https://matomo.org/docs/site-search/
+ ///
+ /// - Parameters:
+ /// - query: The string the user was searching for
+ /// - category: An optional category which the user was searching in
+ /// - resultCount: The number of results that were displayed for that search
+ /// - dimensions: An optional array of dimensions, that will be set only in the scope of this event.
+ /// - url: The optional url of the page that was viewed.
+ public func trackSearch(query: String, category: String?, resultCount: Int?, dimensions: [CustomDimension] = [], url: URL? = nil) {
+ let event = Event(tracker: self, action: [], url: url, searchQuery: query, searchCategory: category, searchResultsCount: resultCount, dimensions: dimensions)
+ queue(event: event)
+ }
+}
+
+extension MatomoTracker {
+ /// Set a permanent custom dimension.
+ ///
+ /// Use this method to set a dimension that will be send with every event. This is best for Custom Dimensions in scope "Visit". A typical example could be any device information or the version of the app the visitor is using.
+ ///
+ /// For more information on custom dimensions visit https://matomo.org/docs/custom-dimensions/
+ ///
+ /// - Parameter value: The value you want to set for this dimension.
+ /// - Parameter index: The index of the dimension. A dimension with this index must be setup in the Matomo backend.
+ @available(*, deprecated, message: "use setDimension: instead")
+ public func set(value: String, forIndex index: Int) {
+ let dimension = CustomDimension(index: index, value: value)
+ remove(dimensionAtIndex: dimension.index)
+ dimensions.append(dimension)
+ }
+
+ /// Set a permanent custom dimension.
+ ///
+ /// Use this method to set a dimension that will be send with every event. This is best for Custom Dimensions in scope "Visit". A typical example could be any device information or the version of the app the visitor is using.
+ ///
+ /// For more information on custom dimensions visit https://matomo.org/docs/custom-dimensions/
+ ///
+ /// - Parameter dimension: The Dimension to set
+ public func set(dimension: CustomDimension) {
+ remove(dimensionAtIndex: dimension.index)
+ dimensions.append(dimension)
+ }
+
+ /// Set a permanent custom dimension by value and index.
+ ///
+ /// This is a convenience alternative to set(dimension:) and calls the exact same functionality. Also, it is accessible from Objective-C.
+ ///
+ /// - Parameter value: The value for the new Custom Dimension
+ /// - Parameter forIndex: The index of the new Custom Dimension
+ @objc public func setDimension(_ value: String, forIndex index: Int) {
+ set(dimension: CustomDimension( index: index, value: value ));
+ }
+
+ /// Removes a previously set custom dimension.
+ ///
+ /// Use this method to remove a dimension that was set using the `set(value: String, forDimension index: Int)` method.
+ ///
+ /// - Parameter index: The index of the dimension.
+ @objc public func remove(dimensionAtIndex index: Int) {
+ dimensions = dimensions.filter({ dimension in
+ dimension.index != index
+ })
+ }
+}
+
+
+extension MatomoTracker {
+
+ /// Set a permanent new Custom Variable.
+ ///
+ /// - Parameter dimension: The Custom Variable to set
+ public func set(customVariable: CustomVariable) {
+ removeCustomVariable(withIndex: customVariable.index)
+ customVariables.append(customVariable)
+ }
+
+ /// Set a permanent new Custom Variable.
+ ///
+ /// - Parameter name: The index of the new Custom Variable
+ /// - Parameter name: The name of the new Custom Variable
+ /// - Parameter value: The value of the new Custom Variable
+ @objc public func setCustomVariable(withIndex index: UInt, name: String, value: String) {
+ set(customVariable: CustomVariable(index: index, name: name, value: value))
+ }
+
+ /// Remove a previously set Custom Variable.
+ ///
+ /// - Parameter index: The index of the Custom Variable.
+ @objc public func removeCustomVariable(withIndex index: UInt) {
+ customVariables = customVariables.filter { $0.index != index }
+ }
+}
+
+// Objective-c compatibility extension
+extension MatomoTracker {
+ @objc public func track(view: [String], url: URL? = nil) {
+ track(view: view, url: url, dimensions: [])
+ }
+
+ @objc public func track(eventWithCategory category: String, action: String, name: String? = nil, number: NSNumber? = nil, url: URL? = nil) {
+ let value = number == nil ? nil : number!.floatValue
+ track(eventWithCategory: category, action: action, name: name, value: value, url: url)
+ }
+
+ @available(*, deprecated, message: "use trackEventWithCategory:action:name:number:url instead")
+ @objc public func track(eventWithCategory category: String, action: String, name: String? = nil, number: NSNumber? = nil) {
+ track(eventWithCategory: category, action: action, name: name, number: number, url: nil)
+ }
+
+ @objc public func trackSearch(query: String, category: String?, resultCount: Int, url: URL? = nil) {
+ trackSearch(query: query, category: category, resultCount: resultCount, url: url)
+ }}
+
+extension MatomoTracker {
+ public func copyFromOldSharedInstance() {
+ matomoUserDefaults.copy(from: UserDefaults.standard)
+ }
+}