Use Event Horizon for application lifecycle

[MiSikora]

Description

Relates to PCDROID-419
Closes PCDROID-420

Testing Instructions

1. Install the app.
2. Verify in logs that the application_installed event is triggered.
3. Minimize the app.
4. Verify in logs that the application_closed event is triggered.
5. Maximize the app.
6. Verify in logs that the application_opened event is triggered.
7. Apply this patch.

curl -L https://github.com/user-attachments/files/25043607/version.patch | git apply

8. Open the app.
9. Verify in logs that the application_updated event is triggered.

Checklist

• If this is a user-facing change, I have added an entry in CHANGELOG.md
• Ensure the linter passes (./gradlew spotlessApply to automatically apply formatting/linting)
• I have considered whether it makes sense to add tests for my changes
• All strings that need to be localized are in modules/services/localization/src/main/res/values/strings.xml
• Any jetpack compose components I added or changed are covered by compose previews
• I have updated (or requested that someone edit) the spreadsheet to reflect any new or changed analytics.

I have tested any UI changes...

• with different themes
• with a landscape orientation
• with the device set to have a large display and font size
• for accessibility with TalkBack

[dangermattic]

	1 Warning
⚠️	Class EventSink is missing tests, but unit-tests-exemption label was set to ignore this.

Generated by 🚫 Danger

[wpmobilebot]

Project dependencies changes

list

+ New Dependencies
com.automattic:eventhorizon:pocket-casts-068631373314a38e6adb54cd000fc1d1a74f86bd

tree

+\--- project :modules:features:account
+     \--- project :modules:features:search
+          \--- project :modules:services:analytics
+               \--- com.automattic:eventhorizon:pocket-casts-068631373314a38e6adb54cd000fc1d1a74f86bd
+                    \--- org.jetbrains.kotlin:kotlin-stdlib:2.0.21 -> 2.3.10 (*)

[geekygecko]

Is this the right patch file thread-crash.patch?

[MiSikora]

Is this the right patch file thread-crash.patch?

Whoops! Fixed.

[wpmobilebot]

Version 8.6 has now entered code-freeze, so the milestone of this PR has been updated to 8.7.

[Copilot]

Pull request overview

This PR migrates Pocket Casts’ application lifecycle analytics to Automattic’s Event Horizon by introducing an EventSink bridge and updating lifecycle tracking to use monotonic time.

Changes:

• Added Event Horizon dependency and DI wiring (EventSink + singleton EventHorizon) in the analytics service.
• Updated AppLifecycleAnalytics to emit Event Horizon lifecycle events and compute timeInApp via TimeSource.
• Added a small analytics testing module (modules:services:analytics:testing) and moved/updated lifecycle unit tests accordingly.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
settings.gradle.kts	Includes new :modules:services:analytics:testing module.
modules/services/utils/.../UtilsModule.kt	Provides TimeSource.Monotonic via Hilt for timing calculations.
modules/services/analytics/testing/.../TestEventSink.kt	Test-only sink capturing Event Horizon Trackable events.
modules/services/analytics/testing/build.gradle.kts	Declares the new testing module and its Event Horizon dependency.
modules/services/analytics/src/test/.../AppLifecycleAnalyticsTest.kt	New unit test validating lifecycle events via Event Horizon + TestTimeSource.
modules/services/analytics/.../di/AnalyticsModule.kt	Provides EventSink and a singleton EventHorizon.
modules/services/analytics/.../EventSink.kt	Implements the bridge from Event Horizon Trackable to existing Tracker + listeners.
modules/services/analytics/.../AppLifecycleAnalytics.kt	Emits Event Horizon lifecycle events and computes elapsed time using TimeSource.
modules/services/analytics/.../AnalyticsLoggingListener.kt	Filters out NoOpTracker entries from debug logging output.
modules/services/analytics/build.gradle.kts	Adds Event Horizon + the new testing module as test dependency.
gradle/libs.versions.toml	Adds the eventhorizon library coordinate.
app/src/test/.../AppLifecycleAnalyticsTest.kt	Removes old app-module lifecycle analytics unit test.