Analytics: track metadata_filter_changed for chip toggles and range slider commits

[LeonardoRosaa]

What has changed and why?

Instruments the metadata_filter_changed PostHog event for metadata chip toggles and range slider commits in the grid filter panel.

How has it been tested?

Unit tests.

Did you update CHANGELOG.md?

• Yes
• Not needed (internal change)

Summary by CodeRabbit

• New Features
  • Added analytics tracking for metadata filter interactions (enabled/disabled) and for range adjustments, including the affected field and selected min/max values.
  • Enhanced numeric/video filter components to notify consumers when users commit updated ranges.
• Bug Fixes
  • Improved end-to-end propagation of committed filter changes from video dimensions and frame bounds, as well as combined metadata dimension sliders.
• Tests
  • Extended coverage to verify analytics events fire (and don’t fire when missing a collection id), with updated mocks.

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Review details

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: d565dcb5-1eef-473e-8482-6beaf0ef001a

📥 Commits

Reviewing files that changed from the base of the PR and between 3257f1d and 0bfee08.

📒 Files selected for processing (2)

• lightly_studio_view/src/lib/components/MetadataFilterChips/useMetadataFilterChips.test.ts
• lightly_studio_view/src/routes/datasets/[dataset_id]/[collection_type]/[collection_id]/+layout.svelte

📝 Walkthrough

Walkthrough

Filter components now report committed range changes through callbacks. Metadata filter chips and dataset filter ranges emit metadata_filter_changed PostHog events, with tests covering chip toggle, clear, and missing-collection behavior.

Changes

Metadata filter analytics

Layer / File(s)	Summary
Filter change callback propagation lightly_studio_view/src/lib/components/CombinedMetadataDimensionsFilters/..., lightly_studio_view/src/lib/components/VideoFieldBoundsFilters/..., lightly_studio_view/src/lib/components/VideoFrameBoundsFilter/...	Filter components expose callbacks and report committed width, height, FPS, duration, frame-number, and numeric metadata ranges.
Metadata chip event tracking lightly_studio_view/src/lib/components/MetadataFilterChips/...	Chip toggles and clearing emit enabled or disabled metadata_filter_changed events when collectionId is available, with corresponding tests.
Dataset route analytics wiring lightly_studio_view/src/lib/hooks/index.ts, lightly_studio_view/src/routes/datasets/.../+layout.svelte	The dataset layout tracks range changes with collection, field, action, and min/max values, and the hooks barrel exports usePostHog.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Sequence Diagram(s)

sequenceDiagram
  participant User
  participant FilterComponents
  participant DatasetLayout
  participant MetadataFilterChips
  participant PostHog
  User->>FilterComponents: Commit a filter range
  FilterComponents->>DatasetLayout: Send field name and min/max values
  DatasetLayout->>PostHog: Track metadata_filter_changed with range_changed
  User->>MetadataFilterChips: Toggle or clear a filter
  MetadataFilterChips->>PostHog: Track metadata_filter_changed with enabled or disabled

Loading

Possibly related PRs

• lightly-ai/lightly-studio#1676: Introduced the metadata filter chip UI and its toggle and clear handlers.
• lightly-ai/lightly-studio#1751: Also re-exports usePostHog through the hooks barrel.
• lightly-ai/lightly-studio#1766: Also re-exports usePostHog while instrumenting different grid filter interactions.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly matches the main change: tracking metadata_filter_changed events for chip toggles and slider commits.
Description check	✅ Passed	The description follows the template and includes the change summary, testing notes, and changelog status.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch leonardo-lig-10227-analytics-track-workflows-filter-metadata-filter

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[lightly-fast-track-bot]

❌  Fast Track: checks did not pass

Guardrail	Result	Message
dummy	✅	Always passes.
frontend/complexity	❌	lightly_studio_view/src/routes/datasets/[dataset_id]/[collection_type]/[collection_id]/+layout.svelte:150 — Function 'handleSelectAllKeydown' has a complexity of 11. Maximum allowed is 10. lightly_studio_view/src/routes/datasets/[dataset_id]/[collection_type]/[collection_id]/+layout.svelte:374 — Arrow function has a complexity of 11. Maximum allowed is 10.
backend/complexity	✅	0 file(s) checked.
backend/coverage	✅	0 file(s) checked.
diff-size	✅	PR adds 139 line(s) (limit: 215).
frontend/coverage	❌	[FAIL] lightly_studio_view/src/lib/components/CombinedMetadataDimensionsFilters/CombinedMetadataDimensionsFilters.svelte: no test file found [FAIL] lightly_studio_view/src/lib/components/VideoFieldBoundsFilters/VideoFieldBoundsFilters.svelte: no test file found [FAIL] lightly_studio_view/src/lib/components/VideoFrameBoundsFilter/VideoFrameBoundsFilter.svelte: no test file found [FAIL] lightly_studio_view/src/lib/hooks/index.ts: no test file found [FAIL] lightly_studio_view/src/lib/components/MetadataFilterChips/useMetadataFilterChips.svelte.ts: coverage data not found [FAIL] lightly_studio_view/src/routes/datasets/[dataset_id]/[collection_type]/[collection_id]/+layout.svelte: coverage data not found

View the guardrail run

To run the guardrails locally, from fast_track/ run make install once, then make run-guardrails (or GUARDRAILS=<name1>,<name2> make run-guardrails for some guardrails).

_{Reflects 0bfee08.}

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[LeonardoRosaa]

/review