feat(content-preview): request waveform representation when v2 is enabled

[abhishek1128]

Summary

ContentPreview sets skipServerUpdate, so the Preview SDK never sends its own hinted file GET. When audio player v2 is enabled, ContentPreview now passes [waveform] into File.getFile() via a new repHints option, and the Files API appends that to X-Rep-Hints.

Prefetch in preview-client / EndUserApp can still reuse a cache entry without this hint; those hosts need matching follow-ups.

Test plan

• v2 on: ContentPreview file GET includes [waveform].
• v2 off: header is the default X_REP_HINTS only.
• File.getFile({ repHints: '[waveform]' }) appends to the default header; omitted repHints is unchanged.

Summary by CodeRabbit

• New Features

  • Content previews now request waveform data when the updated audio player is enabled, supporting waveform-aware playback experiences.
  • File requests can include additional representation hints while preserving existing defaults.

• Tests

  • Added coverage confirming waveform hints are included only when the updated audio player is enabled and omitted otherwise.
  • Added validation that additional representation hints are correctly appended to file requests.

[coderabbitai]

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• package.json

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Walkthrough

The file API appends optional representation hints to X-Rep-Hints. Content preview supplies the waveform hint when audioPlayerV2 is enabled. Tests cover enabled, disabled, and direct API behavior.

Changes

Waveform representation hints

Layer / File(s)	Summary
Request hint contract src/common/types/api.js, src/constants.js	RequestOptions accepts optional repHints. X_REP_HINT_WAVEFORM defines the waveform hint.
Content preview integration src/elements/content-preview/ContentPreview.js, src/api/File.js, package.json	fetchFile passes the waveform hint when audioPlayerV2.enabled is true. getFile appends it to the X-Rep-Hints header. box-content-preview versions are updated.
Request behavior validation src/elements/content-preview/__tests__/ContentPreview.test.js, src/api/__tests__/File.test.js	Tests verify waveform hints for enabled audio playback, omission when disabled, and header construction. The mock formatting change does not alter behavior.

Estimated code review effort: 2 (Simple) | ~10 minutes

Sequence Diagram(s)

sequenceDiagram
  participant ContentPreview
  participant FileAPI
  participant XHR
  ContentPreview->>ContentPreview: Read audioPlayerV2.enabled
  ContentPreview->>FileAPI: Call getFile with optional repHints
  FileAPI->>XHR: Send X-Rep-Hints header

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Suggested reviewers: jpan-box, jfox-box, tjuanitas

Merge Risk: 🟡 Moderate · up to 30db6

When audio player v2 is enabled, cached ContentPreview data may bypass the new waveform-hint request, so waveform representations may not be selected for some users. Cache reuse should be handled or explicitly accepted before merging.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the main change: requesting the waveform representation when audio player v2 is enabled.
Description check	✅ Passed	The description explains the implementation, preserved behavior, known follow-up scope, and test plan. It is complete and relevant to the pull request.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 6…
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.

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_{A rabbit hops where waveform hints now flow
The preview checks the flag before requests go
The file API adds the bracketed sign
Tests guard enabled and disabled design
XHR carries the header bright
Ears find their waveform right}

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Actionable comments posted: 1

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Inline comments:
In `@src/elements/content-preview/ContentPreview.js`:
- Line 1284: Update the file retrieval flow around the repHints option so
waveform requests bypass the existing file cache, or otherwise partition cache
entries by representation hints. Ensure requests requiring waveform data send
X-Rep-Hints and do not reuse a cached file that lacks the requested waveform
representation.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Advanced

Run ID: 7b7e3221-2828-4c27-8224-546ae3ec124d

📥 Commits

Reviewing files that changed from the base of the PR and between 1d35a01 and fd79415.

📒 Files selected for processing (6)

• src/api/File.js
• src/api/__tests__/File.test.js
• src/common/types/api.js
• src/constants.js
• src/elements/content-preview/ContentPreview.js
• src/elements/content-preview/__tests__/ContentPreview.test.js

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​box-content-preview@​3.79.0 ⏵ 3.90.0	+1		+1	+1

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[mergify]

Merge Queue Status

• ✅ Entered queue — 2026-09-10 18:07 UTC · Rule: Automatic strict merge · triggered by rule Automatic merge queue
• ✅ Checks skipped · PR is already up-to-date
• ✅ Merged — 2026-09-10 18:07 UTC · at 5a118601aab05b08eeec2e6af08926fe762e4498 · squash

This pull request spent 18 seconds in the queue, including 2 seconds running CI.

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