Keep generated Hashable conformance only for public models

[laevandus]

🔗 Issue Links

Related: CHA-3742

🎯 Goal

The OpenAPI generator now emits a Hashable conformance for every model; keep it only for the publicly exposed models (AppSettings, UploadConfig) and strip it from the rest to avoid shipping unused API surface.

📝 Summary

• Publicize the generated Hashable conformance for AppSettings/UploadConfig and add an allowed_hashable_models allow-list in openapi_generate.sh that strips the Hashable extension from all other generated models.

☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• This change should be manually QAed
• Changelog is updated with client-facing changes
• Changelog is updated with new localization keys
• New code is covered by unit tests
• Documentation has been updated in the docs-content repo

Summary by CodeRabbit

• Bug Fixes
  • Improved generated model support so only approved models keep hashability, avoiding inconsistent behavior across model types.
  • Ensured generated equality and hashing behavior remains accessible where needed, improving compatibility with code that stores these models in sets or dictionaries.

[coderabbitai]

📝 Walkthrough

Walkthrough

Modifies the OpenAPI generation script to introduce an allowlist controlling which generated model types retain Hashable conformance, publicize the generated == operator and hash(into:) method, and strip Hashable extensions from non-allowlisted models via sed.

Changes

OpenAPI Generator Script Updates

Layer / File(s)	Summary
Hashable allowlist and conformance stripping Scripts/openapi_generate.sh	Adds allowed_hashable_models array and a new strip_hashable_conformance step that uses sed to remove the generated Hashable extension from models not in the allowlist.
Publicize generated equality and hash methods Scripts/openapi_generate.sh	Updates publicize_model to also mark the generated static func == and func hash(into:) as public, applied to AppSettings and UploadConfig.

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

Possibly related PRs

• GetStream/stream-chat-swift#4148: Both PRs modify the same post-processing/access-level handling of generated Swift models in the generator script.
• GetStream/stream-chat-swift#4159: Both PRs modify the publicize_model helper in the generator script.

Suggested reviewers: martinmitrevski, nuno-vieira

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
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.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: retaining generated Hashable conformance only for public models.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch open-api-hashable-models

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[github-actions]

	1 Message
📖	There seems to be app changes but CHANGELOG wasn't modified. Please include an entry if the PR includes user-facing changes. You can find it at CHANGELOG.md.

Generated by 🚫 Danger

[github-actions]

Public Interface

+ extension AppSettings: Hashable  
+ 
+   public static func ==(lhs: AppSettings,rhs: AppSettings)-> Bool
+   public func hash(into hasher: inout Hasher)

+ extension UploadConfig: Hashable  
+ 
+   public static func ==(lhs: UploadConfig,rhs: UploadConfig)-> Bool
+   public func hash(into hasher: inout Hasher)

[Stream-SDK-Bot]

SDK Size

title	develop	branch	diff	status
StreamChat	7.53 MB	7.53 MB	+1 KB	🟢
StreamChatUI	4.27 MB	4.27 MB	0 KB	🟢
StreamChatCommonUI	0.84 MB	0.84 MB	0 KB	🟢

[Stream-SDK-Bot]

SDK Performance

target	metric	benchmark	branch	performance	status
MessageList	Hitches total duration	10 ms	5.01 ms	49.9% 🔼	🟢
	Duration	2.6 s	2.37 s	8.85% 🔼	🟢
	Hitch time ratio	4 ms per s	1.97 ms per s	50.75% 🔼	🟢
	Frame rate	75 fps	80.7 fps	7.6% 🔼	🟢
	Number of hitches	1	0.6	40.0% 🔼	🟢

[Stream-SDK-Bot]

StreamChat XCSize

Object	Diff (bytes)
UploadConfig.o	+11061
ChatMessageGiphyAttachment.o	-10372
AppSettings.o	+976
ChatMessageAttachment.o	-48

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud