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feat: native app sign-in and push backend - #38
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Bearer-token sessions for the React Native app, email-code / Google (browser handoff with PKCE) / Apple sign-in under /api/mobile/auth, Expo push alongside Web Push with per-session device tokens, and getAppConfig for the app. Root tsconfig, lint, prettier and Docker ignore the mobile/ folder.
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Caution Review failedThe pull request is closed. No actionable comments were generated in the recent review. ℹ️ Recent review info
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Merge Risk:
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Docstring Coverage |  |
Docstring coverage is 57.14% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 14 functions across 43 files. (3 skipped:… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Title check The title clearly identifies the main native app sign-in and push notification backend changes. It is concise and directly related to the pull request. Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request.
Full details: Docstring Coverage
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Explanation
Docstring coverage is 57.14% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 14 functions across 43 files. (3 skipped: 3 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
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Actionable comments posted: 1
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Inline comments:
Review comments at @src/server/mobileAuth.ts:
- Around line 397-400: Update the jwtVerify call for Apple identity tokens to
require the exp, iat, and sub claims through its requiredClaims option. Keep the
existing issuer and audience validation unchanged, and preserve the subsequent
payload handling.
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⛔ Files ignored due to path filters: 1
pnpm-lock.yamlis excluded by!**/pnpm-lock.yaml
📒 Files selected for processing: 27
.dockerignore.eslintrc.cjs.prettierignorepackage.jsonprisma/migrations/20261021021229_add_device_push_token/migration.sqlprisma/schema.prismasrc/env.jssrc/pages/api/mobile/auth/apple.tssrc/pages/api/mobile/auth/email/index.tssrc/pages/api/mobile/auth/email/verify.tssrc/pages/api/mobile/auth/exchange.tssrc/pages/api/mobile/auth/handoff.tssrc/pages/api/mobile/auth/signout.tssrc/pages/api/mobile/auth/start.tssrc/server/api/routers/user.tssrc/server/api/services/notificationService.tssrc/server/api/trpc.tssrc/server/auth.tssrc/server/expoPush.tssrc/server/mobileAuth.tssrc/server/mobileAuthTokens.tssrc/tests/expoPush.integration.test.tssrc/tests/expoPush.test.tssrc/tests/mobileAuth.integration.test.tssrc/tests/mobileAuth.test.tssrc/utils/expoPush.tstsconfig.json
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Anonymises the user and keeps shared expenses, balances and groups intact for everyone else. Deletion needs a one-time code emailed to the account; Apple sign-in tokens are revoked via Apple's REST API when configured.
A sign-in that found the user just before the account was deleted could create its session (or link Google/Apple) after the deletion removed them, and bearer sessions never looked at deletedAt. Sessions, sign-in links and the email sign-in's update now lock the user row FOR SHARE and require deletedAt IS NULL, so they either commit before the deletion (which then removes them) or wait for it and are refused. Adapter lookups return no deleted user, and a session of a deleted account is deleted when used, by the app (bearer) and the web (cookie).
The next owner was picked from an unlocked read, so when two members deleted their accounts at once a group could pass to the other one, deleted, even with a live member left. The deletion now locks its account together with the expected next owners, in id order so two deletions needing each other's account wait instead of deadlocking, then locks its groups and picks each next owner with FOR SHARE on the member and their membership, re-checking deletedAt after any wait.
Leaving someone who deleted their account out unless they have a share also ran on edits, including the stored rows of an unchanged expense. A rename then dropped their zero-share row, so the server no longer saw a metadata-only edit and re-validated and rebalanced the expense, which old expenses can fail. Only new expenses leave them out now; an edit saves the rows it has.
GET /api/mobile/auth/start signs the browser out of the web before the Google sign-in, so a link on any site could sign a visitor out. It now only does so when the browser opened the page itself (Sec-Fetch-Site: none, as the app's ASWebAuthenticationSession or Custom Tab, a typed URL or a bookmark do) or came from one of our pages (same-origin). Links and forms from other sites (cross-site, same-site) get a page asking to sign in from the app, and the session is left alone. Browsers without Fetch Metadata (Safari before 16.4, used by the app on older iOS) are let through unless their Referer is another site, so sign-in keeps working there.
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Backend for the native SplitPro app (app PR is stacked on this one). Nothing changes for web users.
What's added
createTRPCContextacceptsAuthorization: Bearer <token>. Tokens are ordinary NextAuthSessionrows (180 days, sliding). An invalid bearer is treated as signed out, never falls back to the cookie./api/mobile/auth:email/email/verify: the same sign-in code the web sends (same generator, hashing, blocked-domain rule and attempt limits), returned as a bearer token.start→ NextAuth Google →handoff→exchange: Google via a browser handoff with PKCE. In production the only accepted redirect issplitpro://oauth-callback;exp://only in development.apple: verifies Apple identity tokens withjoseagainstAPPLE_BUNDLE_ID.host.exp.Exponentis rejected outside development.signout: deletes the session and, optionally, the device's push token.DevicePushTokentable tied to the session that registered it; tokens of expired/revoked sessions andDeviceNotRegisteredtokens are deleted.user.registerPushToken,user.unregisterPushToken,user.getAppConfig(invitesEnabled,storagePublicUrl).user.getDeleteAccountInfo,user.requestDeleteAccountCode,user.deleteAccount. Needs a one-time code emailed to the account (separate from sign-in codes, 15 min, single use, attempt-limited). The user is anonymised ("Deleted user", email and sign-in methods removed, newUser.deletedAt) so shared expenses, balances and groups stay correct for everyone else; settled groups are left, created groups pass to another member or are deleted when empty and settled. Apple sign-in tokens are revoked through Apple's REST API when the Apple key is configured (best effort, never blocks deletion). A goodbye email goes to the old address./auth/signin?deleted=1. The web has no Apple sign-in, so web deletions of Apple-linked accounts skip token revocation..dockerignoreskipmobile/.Before merging / deploying
20261021021229_add_device_push_tokenand20261021120000_add_user_deleted_atrun on deploy.APPLE_BUNDLE_ID=app.splitpro. For Apple token revocation on account deletion:APPLE_TEAM_ID,APPLE_KEY_ID,APPLE_PRIVATE_KEY(a Sign in with Apple key from the developer portal). Optional:EXPO_ACCESS_TOKENif push security is enabled on the Expo project.expo-server-sdk,jose.Review and testing
tsc --noEmitand lint clean.pnpm test: 302 pass withTEST_DATABASE_URLset. One existing integration test (groupSettlement.integration) can hit a write conflict when test files run concurrently against one DB; it passes on rerun and with--test-concurrency=1.Summary by CodeRabbit