refactor(auth): extract the signup service out of the auth controller - #4058
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Move the account-signup business logic (capacity gate, invite eligibility, mass-assignment scrubbing, user creation, email verification, organization provisioning, analytics, invite finalize/release) out of auth.controller.signup into a new auth.signup.service.js. The controller keeps only the response block (token/cookie/JSON) and error mapping. isMailerConfigured/sendVerificationEmail move with it (both had callers outside signup - getConfig and resendVerification - which now re-import them from the service). The capacity/eligibility gate rejection is signaled via an AppError with code SIGNUP_DISABLED so the controller reconstructs the exact original 404 response instead of the generic 422 fallback. Pure refactor - behaviour unchanged. Verified against a baseline run of the unmodified auth suites (14/82 unit, 5/122 integration, 1/4 e2e); the refactored branch reproduces the same counts. Refs #3995 Claude-Session: https://claude.ai/code/session_0185ELiCjZaBJx8PH4xoSsZb
Add auth.signup.service.unit.tests.js covering the gates that previously needed an HTTP round-trip: capacity rejection, invite release on the capacity gate (claimed and unclaimed), invite release + user rollback on organization-provisioning failure, no auto-verify for an invited account when the mailer is off (plus a control for the plain-signup case that still auto-verifies), and finalize ordering (strictly after organization provisioning). Each test verified red-before/green-after by temporarily breaking the behaviour it covers (disabling the capacity gate, skipping the org-failure rollback, dropping the invite guard on auto-verify, and reordering finalize before organization provisioning) and restoring afterward. Refs #3995 Claude-Session: https://claude.ai/code/session_0185ELiCjZaBJx8PH4xoSsZb
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. WalkthroughSignup logic now runs in ChangesSignup service extraction
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to Signup orchestration is moved into a service while the controller retains response handling. Capacity, rollback, verification, and invite lifecycle behavior are covered, with no remaining merge-blocking risk identified. Sequence Diagram(s)sequenceDiagram
participant Client
participant SignupController
participant SignupService
participant Eligibility
participant UserService
participant AuthOrganizationService
SignupController->>SignupService: signup(req)
SignupService->>Eligibility: Check capacity and signup eligibility
Eligibility-->>SignupService: Return invite and claim state
SignupService->>UserService: Create sanitized user
UserService-->>SignupService: Return user
SignupService->>AuthOrganizationService: Provision organization
AuthOrganizationService-->>SignupService: Return orgResult
SignupService->>Eligibility: Finalize honored invite
SignupService-->>SignupController: Return user and orgResult
SignupController-->>Client: Send signup response
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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🧪 Generate unit tests (beta)
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Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## master #4058 +/- ##
==========================================
+ Coverage 94.07% 94.12% +0.05%
==========================================
Files 170 172 +2
Lines 5837 5891 +54
Branches 1868 1889 +21
==========================================
+ Hits 5491 5545 +54
Misses 283 283
Partials 63 63
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…ions A reviewer ran 10 mutations against auth.signup.service.js; 6 stayed green because the tests only checked call counts or a mock's fixed return value. Strengthens the capacity-gate/org-failure release-and-rollback assertions to check the actual call target, the call order (remove before release), and that each cleanup call is genuinely awaited (a dropped await here becomes an unhandledRejection that crashes the process on Node 24). Also asserts on getBrut's call argument instead of its mocked return value, so an auto-verify lookup of the wrong user is no longer invisible. Verified each of the 6 previously-green mutations now fails the suite, and that the 4 already-red mutations still do. Claude-Session: https://claude.ai/code/session_0185ELiCjZaBJx8PH4xoSsZb
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Inline comments:
In `@modules/auth/controllers/auth.controller.js`:
- Around line 34-39: Add an `@returns` entry to the signup function’s JSDoc,
documenting that the async handler resolves to the Express response object on
successful and SIGNUP_DISABLED paths.
In `@modules/auth/tests/auth.signup.service.unit.tests.js`:
- Around line 384-386: Update the signup service test to assert that
eligibility.finalize receives the expected user identifier, covering the
user._id || user.id selection, while preserving the existing organization-result
and ordering assertions.
- Around line 106-109: Add a JSDoc header to the named baseConfig helper,
documenting its overrides parameter and returned configuration object with
`@param` and `@returns` tags, consistent with mockSignupServiceDeps and
mockEligibilityWithInvite.
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modules/auth/controllers/auth.controller.jsmodules/auth/services/auth.signup.service.jsmodules/auth/tests/auth.signup.service.unit.tests.js
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…ssing JSDoc CodeRabbit PR #4058: the finalize-ordering test proved call order but never checked which account the honored invite gets recorded against — a wrong identifier there would link the invite to the wrong account and the suite would still pass. Asserts eligibility.finalize's argument, plus the same gap found on handleSignupOrganization's argument in the same test (order-only, no identity check). Verified both mutations (wrong finalize id, wrong handleSignupOrganization user) turn the test red, and that reverting turns it green again — alongside the six rollback/auto-verify mutations hardened in the previous commit, all still red. Also adds the @returns JSDoc this repo's guideline requires on auth.signup (documents the actual three return shapes — Express res, responses.error()'s result object, or undefined on the unguarded 422 path — rather than the flattened "Express response" wording CodeRabbit proposed) and a header on the baseConfig test helper to match its two documented siblings. Claude-Session: https://claude.ai/code/session_0185ELiCjZaBJx8PH4xoSsZb
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What
signupwas one ~269-line function at cyclomatic complexity 61 insidemodules/auth/controllers/auth.controller.js— the second-heaviest function in the stack. It mixed HTTP concerns with capacity gating, invite eligibility, user creation, email verification, organization provisioning and analytics, so none of those could be tested without an HTTP round-trip.It now lives in
modules/auth/services/auth.signup.service.js. The controller keeps response shaping and error mapping.This is a refactor: behaviour is unchanged. No bug in the moved code was fixed, deliberately — a behaviour change hidden inside a move is the worst outcome on the account-creation path.
The four invariants the issue named
The 422 fallback.
responses.error(res, 422, 'Unprocessable Entity', errors.getMessage(err))(err)survives exactly, trailing(err)included. Verified by running the app through supertest on this branch and on a freshorigin/masterworktree, forcing a real duplicate-emailE11000through to the catch-all, and diffing the full response bodies — byte-for-byte identical, includingerrorCode,descriptionand the raw serializederror. The only difference was the per-process test-DB name inside Mongo's own message.isMailerConfigured/sendVerificationEmailhad other callers. Repo-wide grep found exactly two outsidesignup—getConfigandresendVerification, both in the controller. Both functions diffed byte-identical against master; both now import the named exports from the service.Invite lifecycle.
finalizeremains the last pre-response step and still runs after organization provisioning; the organization-failure path still callsrelease(). The return shape is{user, orgResult}—{user, invite}alone would have been insufficient, since the response block reads the organization result. Ordering is mutation-tested: movingfinalizebefore provisioning turns two tests red.Error exits. The pre-change function had exactly two: the early-return 404 gate and a single catch-all 422 that every other throw funnels into. Both reproduced, both verified by execution.
The one shape change
The capacity/eligibility rejection no longer takes
res. The service throwsAppError{code:'SIGNUP_DISABLED', status:404}; the controller matches that code and calls the literal originalresponses.error(res, 404, 'Signup error', 'Registration is currently deactivated')()— empty trailing call, noerr. Verified byte-identical,errorCode: "SERVER_ERROR"anderror: "{}"included.A whitespace-normalised
diff -Bbwof the whole ~220-line moved region against master shows this as the only textual difference; everything else is identical, merely re-indented one level.Tests
Baseline captured on unmodified master, run twice: auth unit 14 suites/82 tests, integration 5/122, e2e 1/4.
This branch: integration 5/122 and e2e 1/4 reproduced exactly; unit 15/89 — precisely +1 suite / +7 tests, which is the new file.
Full repo unit: 172/2387 → 173/2394. Same delta, zero regressions anywhere.
Seven new direct unit tests for the gates that previously needed an HTTP round-trip: capacity rejection · invite release on the capacity gate (with an unclaimed control) · invite release and user rollback on organization failure · no auto-verify for an invited account when the mailer is off (with a plain-signup control) · finalize-after-provisioning ordering. Each proven red by breaking the exact line it guards, then restored.
Review
Independent cold-context review: 0 critical, 0 high, 0 medium. Security pass: no findings — the reviewer verified by
diff -Bbwthat the gating, thesafeBodymass-assignment scrub, the!inviteauto-verify guard and both rollback blocks are textually unchanged.One low, deliberately not fixed here.
err?.code === 'SIGNUP_DISABLED'is a shape check rather than an identity check. If anything else ever throws that code, the controller would silently reclassify it as "Registration is currently deactivated", discarding the real message and the diagnostic field.SIGNUP_DISABLEDhas exactly one emitter today (repo-wide grep), and the same pattern is pre-existing unmodified precedent atauth.controller.js:95(ACCOUNT_LOCKED). Raising it here rather than changing it, since tightening one instance of a house pattern and not the other is its own inconsistency.One flake, not hidden. Of four branch runs of
auth.integration.tests.js, three were clean (126/126 with e2e) and one failed the entire 77-test suite in a way consistent with a bootstrap-level failure rather than a per-test regression. Not reproduced in three subsequent runs;origin/masterin the same environment was 5/5 clean. The failing run's log was overwritten before capture, so it is not root-caused — flagged rather than omitted.Closes #3995
https://claude.ai/code/session_0185ELiCjZaBJx8PH4xoSsZb
Summary by CodeRabbit
New Features
Bug Fixes