85 lines
2.8 KiB
Kotlin
85 lines
2.8 KiB
Kotlin
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix.browser
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import androidx.annotation.VisibleForTesting
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import mozilla.components.browser.session.Session
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import org.mozilla.fenix.components.metrics.Event
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import org.mozilla.fenix.components.metrics.MetricController
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import org.mozilla.fenix.search.telemetry.ads.AdsTelemetry
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class TelemetrySessionObserver(
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private val metrics: MetricController,
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private val ads: AdsTelemetry
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) : Session.Observer {
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private var urlLoading: String? = null
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@VisibleForTesting
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var redirectChain = mutableListOf<String>()
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@VisibleForTesting
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var originSessionUrl: String? = null
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private val temporaryFix = TemporaryFix()
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override fun onLoadingStateChanged(session: Session, loading: Boolean) {
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if (loading) {
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urlLoading = session.url
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} else if (urlLoading != null && !session.private && temporaryFix.shouldSendEvent(session.url)) {
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temporaryFix.eventSentFor = session.url
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metrics.track(Event.UriOpened)
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}
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}
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/**
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* When a link is clicked, record its redirect chain as well as origin url
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*/
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override fun onLoadRequest(
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session: Session,
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url: String,
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triggeredByRedirect: Boolean,
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triggeredByWebContent: Boolean
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) {
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if (isFirstLinkInRedirectChain(url, session.url)) {
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originSessionUrl = session.url
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}
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if (canStartChain()) {
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redirectChain.add(url)
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}
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}
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private fun canStartChain(): Boolean {
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return originSessionUrl != null
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}
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private fun isFirstLinkInRedirectChain(url: String, sessionUrl: String): Boolean {
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return originSessionUrl == null && url != sessionUrl
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}
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/**
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* After the redirect chain has finished, check if we encountered an ad on the way and clear
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* the stored info for that chain
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*/
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override fun onUrlChanged(session: Session, url: String) {
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ads.trackAdClickedMetric(originSessionUrl, redirectChain)
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originSessionUrl = null
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redirectChain.clear()
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}
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/**
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* Currently, [Session.Observer.onLoadingStateChanged] is called multiple times the first
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* time a new session loads a page. This is inflating our telemetry numbers, so we need to
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* handle it, but we will be able to remove this code when [onLoadingStateChanged] has
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* been fixed.
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*
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* See Fenix #3676
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* See AC https://github.com/mozilla-mobile/android-components/issues/4795
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* TODO remove this class after AC #4795 has been fixed
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*/
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private class TemporaryFix {
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var eventSentFor: String? = null
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fun shouldSendEvent(newUrl: String): Boolean = eventSentFor != newUrl
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}
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}
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