fix(state): _resolveStateAtEvent not validate array of events correctly

[rodrigok]

Summary by CodeRabbit

• New Features
  • None
• Bug Fixes
  • Corrected a mislabeled log field for authentication event reporting.
  • Improved pre-check comparison to reduce false mismatch alerts between expected and observed authentication events.
• Refactor
  • Streamlined validation by comparing against a computed list of seen authentication events.
  • Simplified and clarified logs to report concise authentication event summaries.

[coderabbitai]

Walkthrough

Introduces a computed list authEventsWeHaveSeen from current authState, updates pre-check validation to compare counts and sets against this list, adjusts logging to use these variables and fixes a log field name, while leaving the call to checkEventAuthWithState unchanged.

Changes

Cohort / File(s)	Summary
Auth state pre-check and logging packages/federation-sdk/src/services/state.service.ts	Adds computed authEventsWeHaveSeen; updates validation to compare counts/sets against it; updates logs to reference authEventsWeHaveSeen and authEventsInEvent; fixes typo in log field; retains checkEventAuthWithState usage with original authState.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  participant E as EventValidator
  participant S as StateService
  participant A as AuthChecker

  E->>S: validate(event)
  activate S
  note over S: Compute authEventsWeHaveSeen from authState
  S->>S: Compare counts and sets<br/>authEventsInEvent vs authEventsWeHaveSeen
  S-->>S: Log comparison details
  alt Differences found or counts mismatch
    S-->>E: Flag pre-check difference (continue to auth check)
  else No differences
    S-->>E: Proceed
  end
  S->>A: checkEventAuthWithState(event, authState)
  deactivate S
  A-->>E: auth result

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Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested reviewers

• debdutdeb

Poem

I counted keys in clover green,
Auth tales told, and what we’ve seen.
A tidy log, a typo mended,
Sets compared, confusion ended.
Thump-thump! says rabbit, code aligned—
Onward to auth, with calm in mind. 🐇✨

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 summarizes the main change by indicating a fix to the _resolveStateAtEvent function’s validation of event arrays, which aligns with the updated logic in the diff that adjusts how auth event arrays are compared and logged. It is concise, specific, and directly reflects the primary purpose of the changeset.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/resolveStateAtEvent-not-cheking-ids-correctly

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📜 Recent review details

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📥 Commits

Reviewing files that changed from the base of the PR and between d85073e and 0e64aa2.

📒 Files selected for processing (1)

• packages/federation-sdk/src/services/state.service.ts (1 hunks)

🔇 Additional comments (3)

packages/federation-sdk/src/services/state.service.ts (3)

781-783: LGTM! Good refactor for clarity.

Extracting authEventsWeHaveSeen improves readability by giving a clear name to "the event IDs we found in our current state" and avoids recomputing this value in multiple places.

---

785-788: LGTM! Clearer validation logic.

The changes make the validation more explicit by comparing event ID collections directly rather than mixing Map size with event ID comparisons. Functionally equivalent but conceptually cleaner.

---

789-795: LGTM! Logging improvements.

The logging now uses the pre-computed variable (consistent with the validation logic) and fixes the typo in the field name from auithEventsInEvent to authEventsInEvent.

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.31%. Comparing base (d85073e) to head (0e64aa2).

Files with missing lines	Patch %	Lines
...kages/federation-sdk/src/services/state.service.ts	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #268      +/-   ##
==========================================
- Coverage   62.33%   62.31%   -0.02%     
==========================================
  Files          67       67              
  Lines        6385     6387       +2     
==========================================
  Hits         3980     3980              
- Misses       2405     2407       +2     

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