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@gregberns gregberns commented Nov 7, 2025

Summary

  • Fix POST /session/:id/message 400 error: Updated message ID generation to use required 'msg' prefix

Changes

  • Added generateMessageId() function in src/utils/apiHelpers.ts to create message IDs with 'msg_' prefix
  • Updated all message creation functions to use proper message ID formatting

Impact

Resolves server-side validation errors that were preventing session creation and message sending functionality.

Summary by CodeRabbit

Refactor

  • Optimized internal message ID generation with consistent prefixing for improved system consistency.

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coderabbitai bot commented Nov 7, 2025

Walkthrough

Internal message ID generation is refactored with a new generateMessageId() function that prefixes identifiers with "msg_", replacing generateId() calls in three message creation functions. Internal ID generation for message parts remains unchanged.

Changes

Cohort / File(s) Summary
Message ID generation refactor
src/utils/apiHelpers.ts
Introduces generateMessageId() function with "msg_" prefix; updates createTextMessageRequest(), createFileMessageRequest(), and createMixedMessageRequest() to use new generator for message IDs

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

  • Single file modification with consistent pattern
  • Straightforward function introduction and call replacements across 3 locations
  • No exported/public API changes or logic complexity

Poem

🐰 A new prefix hops along the way,
"msg_" marks each ID's display,
Message threads now wear their finest dress,
Four functions refactored, none distressed! ✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title accurately describes the main fix: addressing a 400 error caused by malformed message IDs, which aligns with the changeset's introduction of generateMessageId() to properly format IDs with the 'msg_' prefix.
Docstring Coverage ✅ Passed No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
✨ Finishing touches
  • 📝 Generate docstrings
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Post copyable unit tests in a comment

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Actionable comments posted: 0

🧹 Nitpick comments (1)
src/utils/apiHelpers.ts (1)

117-117: LGTM! Consider adding a validation helper for message IDs.

Correctly updated to use generateMessageId() for message ID generation.

For consistency with isValidSessionId (line 159), consider adding a validation helper for message IDs:

// Message ID validation
export const isValidMessageId = (messageId: string): boolean => {
  return messageId.startsWith('msg_') && messageId.length > 4
}
📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 0ab3c85 and e9e84c0.

📒 Files selected for processing (1)
  • src/utils/apiHelpers.ts (4 hunks)
🔇 Additional comments (3)
src/utils/apiHelpers.ts (3)

70-70: LGTM!

Correctly updated to use generateMessageId() for message ID generation while keeping generateId() for message part IDs (line 77).


94-94: LGTM!

Correctly updated to use generateMessageId() for message ID generation while keeping generateId() for message part IDs (line 101).


57-60: Implementation is correct and consistent across all message creation paths.

The generateMessageId() function with "msg_" prefix is correctly applied in all three message creation functions (createTextMessageRequest, createFileMessageRequest, createMixedMessageRequest) and properly propagated through type definitions and event handling. No conflicting messageID generation patterns exist in the codebase.

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