fix(playback): preserve New Episodes order and resume progress - #1093
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WalkthroughNew Episodes playback now snapshots the displayed episode list and starts it as a context queue. Playback carries context through media items, applies episode-specific resume positions, and coordinates completion and Smart Queue refill when the context queue ends. ChangesNew Episodes queue playback
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Bug fix · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant Controller as PlaybackIntroOutroController
participant Continuation as ContextQueueContinuationCoordinator
participant Service as BoxLorePlaybackService
participant Refill as SmartQueueRefillCoordinator
participant Player
Controller->>Continuation: Handle exhausted context queue
Continuation->>Service: Await completion and request refill
Service->>Refill: Refill exhausted context queue
Refill-->>Service: Return refill result
Service-->>Continuation: Return current-session result
Continuation->>Player: Advance, prepare, and play next item
Merge Risk: 🟡 Moderate · up to Returning to an episode can restart it at an old position instead of its saved progress, which undermines the resume behavior this change is meant to fix. Smart Queue refills can also be skipped silently when the queue is trimmed during playback. Address both before merging. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to Playback now coordinates saved queues with automatic and remote playback. Checks limit stale automatic actions, but recovery after interrupted updates and the trust placed in remote queue metadata remain partly unresolved. Retained concerns Security review detailsSecurity Blast Radius
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
Important Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional. ❌ Failed checks (1 error, 2 warnings)
✅ Passed checks (6 passed)
Full details: Linked Issues checkExplanation [ Full details: Docstring CoverageExplanation Docstring coverage is 2.03% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 148 functions across 29 files. (3 skipped: 3 unsupported.) Full details: Unresolved Review ThreadsExplanation Four newly generated findings are listed as outstanding and are not marked resolved or dismissed: one Major finding on stale activation requests, one Trivial finding on Play All recomposition work, and two Minor findings on continuation telemetry and refill queue validation. No posted CodeRabbit review threads were returned, but the custom check also requires all findings to be fixed and marked resolved or explicitly dismissed. ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
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Actionable comments posted: 4
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Inline comments:
Review comments at
@core/playback/src/main/java/cx/aswin/boxlore/core/playback/PlaybackActivationRequest.kt:
- Around line 21-27: Update PlaybackActivationRequest.consume to atomically
discard a pending request when a different episode activates, retrying if the
request changes concurrently. In PlaybackTransportHelper.restorePositionAndSeek,
only call PlaybackActivationRequest.set when mediaIndex differs from the
controller’s current media item index, so a seek on the current item does not
leave a stale request.
Review comments at
@core/playback/src/main/java/cx/aswin/boxlore/core/playback/service/ContextQueueContinuationCoordinator.kt:
- Around line 52-55: In the continuation advance before
player.seekToNextMediaItem(), set
PlaybackLifecycleSignals.serviceOwnedNaturalAdvanceEpisodeId to the current
media item’s episode ID after stripping queue prefixes, so the transition is
recognized as service-owned. Clear the signal after the transition using the
same delayed-clear behavior as
PlaybackIntroOutroController.finishAtEffectiveEnd.
Review comments at
@core/playback/src/main/java/cx/aswin/boxlore/core/playback/service/SmartQueueRefillCoordinator.kt:
- Line 56: Update SmartQueueRefillCoordinator and
QueueRepository.addRefillEntriesIfUnchanged so refill persistence accepts either
the unchanged queue IDs or the suffix remaining after the triggering episode’s
consumed prefix was trimmed. Keep the player snapshot check and reject all other
queue changes.
Review comments at
@feature/library/src/main/java/cx/aswin/boxlore/feature/library/subscriptions/SubscriptionTabContents.kt:
- Around line 667-668: In `LatestPlayAllFab`, memoize the result of
`latestPlaybackEpisodes(displayPodcasts)` with `remember` keyed on
`displayPodcasts` so unrelated recompositions do not repeat the episode-copying
and deduplication work. Keep the snapshot available during composition for the
existing first-podcast lookup and FAB visibility check.
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ℹ️ Review info
⚙️ Run configuration
- Configuration used: Repository: boxcreate/boxlore/.coderabbit.yaml
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📒 Files selected for processing (32)
app/README.mdapp/src/main/java/cx/aswin/boxlore/navigation/NavGraphLibraryDestinations.ktcore/playback/README.mdcore/playback/src/main/java/cx/aswin/boxlore/core/playback/CastMediaItemConverter.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/PlaybackActivationRequest.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/PlaybackIntroOutroController.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/PlaybackQueueContext.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/PlaybackQueueCoordinator.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/PlaybackTransportHelper.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/QueueManager.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/QueueRepository.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/SmartQueueRefillPolicy.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/service/BoxLorePlaybackService.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/service/ContextQueueContinuationCoordinator.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/service/PlaybackServiceHistory.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/service/PlaybackServiceQueue.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/service/SmartQueueRefillCoordinator.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/service/auto/AutoMediaItemFactory.ktcore/playback/src/main/java/cx/aswin/boxlore/core/playback/service/auto/AutoPlaybackResumptionHandler.ktcore/playback/src/test/java/cx/aswin/boxlore/core/playback/CastMediaItemConverterTest.ktcore/playback/src/test/java/cx/aswin/boxlore/core/playback/PlaybackIntroOutroControllerTest.ktcore/playback/src/test/java/cx/aswin/boxlore/core/playback/PlaybackQueueCoordinatorTest.ktcore/playback/src/test/java/cx/aswin/boxlore/core/playback/QueueManagerPlaybackTest.ktcore/playback/src/test/java/cx/aswin/boxlore/core/playback/QueueRepositoryTest.ktcore/playback/src/test/java/cx/aswin/boxlore/core/playback/SmartQueueRefillPolicyTest.ktcore/playback/src/test/java/cx/aswin/boxlore/core/playback/service/ContextQueueContinuationCoordinatorTest.ktcore/playback/src/test/java/cx/aswin/boxlore/core/playback/service/SmartQueueRefillCoordinatorTest.ktcore/playback/src/test/java/cx/aswin/boxlore/core/playback/service/auto/AutoQueueContextTest.ktfeature/library/README.mdfeature/library/src/main/java/cx/aswin/boxlore/feature/library/subscriptions/LatestPlaybackQueueLogic.ktfeature/library/src/main/java/cx/aswin/boxlore/feature/library/subscriptions/SubscriptionTabContents.ktfeature/library/src/test/java/cx/aswin/boxlore/feature/library/subscriptions/LatestPlaybackQueueLogicTest.kt
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Summary
Fix New Episodes playback jumping into an older show queue or resuming an unfinished episode at the wrong position. Tapping a row now plays that row and the remaining visible unfinished rows in their displayed order.
Fixes #1073.
Motivation
New Episodes rows used the single-episode playback path, which could reuse a previous show queue. Automatic transitions also treated a slightly advanced player clock as an explicit start position, bypassing saved progress. Updating the history timestamp before resolving resume policy could hide stale progress.
What changed
Behavior & compatibility
Impact
User impact — pick exactly one
user-impact-criticaluser-impact-highuser-impact-mediumuser-impact-lowno-user-impactListener impact
What changes in the user’s life:
Backend
backend-changeRelease copy
CHANGELOG.md (developer copy)
Fixed
README What's New / Upcoming (listener copy)
Fixes
Test plan
testDebugUnitTest --continue).:koverVerifyMerged,:app:dependencyGuard,:core:catalog:dependencyGuard, and:core:playback:dependencyGuard.lintDebugtasks completed. Existing playback lint findings remain under its current non-aborting configuration; new helpers/converter have no lint errors.Notes
The report has no reliable reproduction details beyond using the current app version. Tests cover the identified queue and resume failure paths; live Cast playback still needs manual verification.