feat(withdraw): tap the balance to withdraw everything - #2842
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Users had to retype their balance to withdraw it all, and the displayed number is rounded to two decimals, so an exact full-balance withdrawal was guesswork. The balance row on the amount screen is now a button that fills the exact spendable amount the same validation gates on. TASK-21899
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📝 WalkthroughWalkthrough
ChangesFull Balance Filling
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to The withdrawal screen now lets users fill the displayed balance, while other balance rows only receive spacing changes. A bounded usability issue remains because short amounts such as $0.01 may create a button narrower than the intended 44px tap target; adding a minimum width should address it. Sequence Diagram(s)sequenceDiagram
participant WithdrawPage
participant AmountInput
participant WithdrawalState
WithdrawPage->>AmountInput: pass maxDecimalAmount as balanceFillAmount
AmountInput->>WithdrawalState: set exact primary amount
WithdrawalState->>WithdrawPage: validate amount and update Continue state
Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 4 files. (3 skipped: 3 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
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Comment |
Code-analysis diffPainscore total: 7151.3 → 7162.14 (+10.84) 🆕 New findings (150)
…and 130 more. ✅ Resolved (144)
…and 124 more. 📈 Painscore deltas (top movers)
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🧪 UI test report — ✅ all greenSuites
📊 Coverage (unit)
⏱ 10 slowest test cases
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Actionable comments posted: 1
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Inline comments:
In `@src/components/Global/AmountInput/index.tsx`:
- Around line 360-364: Update the balance-action button’s onClick handler near
fillBalance to stop the click event from propagating to the form-level click
handler after filling the balance, while preserving the existing fillBalance
behavior.
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src/app/(mobile-ui)/withdraw/__tests__/withdraw-states.test.tsxsrc/app/(mobile-ui)/withdraw/page.tsxsrc/components/Global/AmountInput/__tests__/balance-fill.test.tsxsrc/components/Global/AmountInput/index.tsxsrc/i18n/app/messages/en.jsonsrc/i18n/app/messages/es-419.jsonsrc/i18n/app/messages/pt-BR.json
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…e CTA The form wrapper focuses the amount field on any click inside it, so the fill button's click bubbled straight into it.
Tapping the word Balance was never the action, so only the number carries the underline and the tap target now. The fill is floored to the two decimals the balance label already truncates to, so the two always agree and neither can claim more than the wallet holds — sub-cent dust stays behind on purpose.
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@abalinda what is the purpose of showing a lot of digits instead of two? what is there're 50 digits after the dot? on the backend it should be not rounded, but on frontend I would prefer to see a user-friendly interface with 2 digits as it is a common standard |
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Inline comments:
In `@src/app/`(mobile-ui)/withdraw/page.tsx:
- Line 442: Update WithdrawPage’s AmountInput balanceFillAmount prop to pass
undefined when selectedMethod.type is 'manteca', while retaining
maxDecimalAmount for other withdrawal methods; add a regression test covering
the Manteca flow.
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src/app/(mobile-ui)/withdraw/__tests__/withdraw-states.test.tsxsrc/app/(mobile-ui)/withdraw/page.tsxsrc/components/Global/AmountInput/__tests__/balance-fill.test.tsxsrc/components/Global/AmountInput/index.tsxsrc/i18n/app/messages/en.jsonsrc/i18n/app/messages/es-419.jsonsrc/i18n/app/messages/pt-BR.json
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$10.12, not $ 10.12. A currency symbol sits against the number and an ISO code takes a space (USD 10.12) — the CLDR rule for en-US, which is how the amount itself is formatted. Affects every balance row, not just withdraw.
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The balance tap fills the amount rounded down to cents, and that rounded number is what the user reads on every screen. Flooring alone stranded the sub-cent remainder: the wallet then reads $0.00 while holding dust the row is too small to offer again. Carry the intent instead of the extra digits. WithdrawFlowContext gains isMaxWithdrawal, set when the balance tap fills the field and cleared by any keystroke. The crypto path resolves the amount from the live balance at spend time, so the wallet reaches a true zero. Guard rails, in resolveWithdrawAmount: the live balance is only used while it still floors to the amount on screen, so a deposit landing mid-flow cannot enlarge the withdrawal and a drop cannot overdraw. Bank and Manteca settle in fiat cents and are untouched.
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Chip review: Changes requested
The prior exact-balance defect is fixed for executable crypto withdrawals, but the full-balance action cannot complete stablecoin cross-chain withdrawals because it does not reserve the Rhino fee.
Findings
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MAJOR · src/app/(mobile-ui)/withdraw/page.tsx:460 · Make full balance account for SDA fees
This offers the same maximum principal before the destination route is known. With a 10 USDC balance, tapping full balance and then choosing USDC on another chain makes the SDA receive-mode quote require more than 10 USDC (principal plus Rhino fee), soinsufficientForFeedisables Confirm and the advertised max action cannot complete. Make the max intent route-aware: quote a maximum source spend and reduce the recipient amount by the fee, or defer/adjust the fill once the destination and fee are known. -
MAJOR · src/utils/withdraw.utils.ts:388 · [moonshotai/kimi-k3] resolveWithdrawAmount can return more than the live spendable balance
The guard only prevents moving more than the user SAW, not more than the user HAS. When the balance drops below the displayed amount after the tap — two tabs (withdraw 9 in tab B, confirm in tab A), a card spend settling, or another withdrawal landing first — the floor check fails and the function falls back toamount, e.g. resolveWithdrawAmount('10.12', 3.00 USDC, true) returns '10.12' (this exact case is even enshrined in the new unit test 'never overdraws when the balance dropped after the tap'). The docstring claims 'a balance that dropped must not overdraw', but 10.12 against a 3.00 balance IS an overdraw attempt. Concrete failure: the returned effectiveAmount feeds calculateRoute's tokenAmount and sendMoney() in src/app/(mobile-ui)/withdraw/crypto/page.tsx; best case the on-chain transfer reverts (submitted with skipGasEstimate: true, so a failed withdrawal and a confusing error), and for the 'collateral-only' path the code comments say the backend settles the charge directly, so the client is requesting settlement of funds the account no longer holds. Fix: never return more than the current spendable balance — when liveNum < amountNum, either return the live balance (clamped) or abort the withdrawal and re-prompt the user, rather than returning the stale displayed amount.
Checked clean
- Pinned head, trusted author, base ref/SHA, and merge base
- Earlier exact-balance finding: fixed for crypto by carrying max intent and resolving the live six-decimal balance at execution
- AmountInput flooring, denomination guard, edit reset, tap propagation, accessibility, and inactive zero/sub-cent states
- Same-chain direct transfer, Rhino bridge pay-mode, and stablecoin SDA receive-mode amount and fee paths
- Charge/request amount construction, route recalculation, confirmation affordability gate, retry behavior, and flow reset
- Localization changes, security boundaries, and diff hygiene
- Focused tests were attempted but could not start because the available prepared dependency tree lacks next-intl and lucide-react
Second opinion by moonshotai/kimi-k3: 1 finding(s), marked with the model name. It reads the diff only, so treat its findings as advice.
Exact head: 149bae3479d6 · Context: repo
The docstring claimed a dropped balance 'must not overdraw', and a test was named for a guarantee it did not assert. The fallback returns the amount the user saw, unchanged; the shortfall is caught downstream, as it always has been for a typed amount. Behaviour unchanged, the claim was wrong.
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Chip review — changes requested
One major issue remains: Use full balance still cannot complete Rhino SDA withdrawals because the quote adds its fee above the selected balance. The earlier exact-precision issue is fixed.
Findings
- MAJOR · src/app/(mobile-ui)/withdraw/crypto/page.tsx:183 · Reserve the SDA fee for a max withdrawal
When a $10 wallet taps full balance and selects cross-chain USDC or USDT, effectiveAmount is $10. This line asks the SDA quote to deliver $10 in receive mode, so Rhino returns payAmount as $10 plus its fee. The existing insufficientForFee gate then disables Confirm, so the new full-balance action cannot complete an SDA withdrawal. This finding is STILL PRESENT from the earlier review. For max withdrawals, quote SDA in pay mode with the live balance, or re-quote after reserving the fee, then use the returned receive amount for the request and charge.
Checked clean
- Earlier finding Preserve the exact withdrawable balance: FIXED. The max-intent flag and resolveWithdrawAmount preserve the six-decimal crypto balance after an unedited fill.
- Earlier finding Make full balance account for SDA fees: STILL PRESENT and re-reported at the route amount passed on line 183.
- Same-chain USDC max withdrawals use the exact live balance, and any field edit clears the max intent.
- AmountInput remains opt-in; its action, disabled and loading states, sub-cent state, formatting, accessibility label, and translations were checked.
- Security and slop passes found no additional actionable issue in the changed trust boundaries or shared component behavior.
- Exact-head CI succeeded for unit, e2e, typecheck, eslint, format, analysis, and preview deployment.
- Local tests were not repeated because the detached checkout has no node_modules; exact-head CI was green.
- Product pricing and network sources were checked; they do not remove the code-level SDA affordability failure.
Second opinion skipped: openrouter-timeout.
Exact head: 6de65ff7cc5a · Context: repo, product
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@abalinda — this is green on CI but can't merge:
They converge on one question — whether "everything" can resolve to more than is actually withdrawable once the SDA fee is taken — which on a max-withdrawal path is the case where being wrong costs a failed or short transfer. Worth a look on the merits rather than a resolve-to-unblock; either a fix or a reasoned rebuttal on the thread will clear the gate. For sequencing: #2876 brings the design system to |
…tInput dev's DS pass (ui#2813 line) moved this file to semantic tokens and the bordered container while this branch was open. The balance row keeps the branch's behavior on dev's tokens: text-foreground-secondary, never text-grey-1 (design.md laws 1-2; legacyColorClasses ratchets at 0). Claude-Session: https://claude.ai/code/session_01LFPygqFLtVPMYDvUNpwbXv
A raw button gets only the browser default outline — no global rule exists; every DS component carries its own ring. 3px action-focus, the law-8 default (LinkButton's 2px is the documented sole exception). Claude-Session: https://claude.ai/code/session_01LFPygqFLtVPMYDvUNpwbXv
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Chip review — changes requested
Request changes: the exact-debit plumbing is improved, but the repeatedly reported SDA fee defect remains—using the full balance as the receive principal makes the fee-inclusive debit unaffordable.
Findings
- MAJOR · src/app/(mobile-ui)/withdraw/crypto/page.tsx:242 · Treat max SDA withdrawal as a fee-inclusive budget
For a max tap, effectiveAmount is the entire live balance and this line uses it to size the destination charge. Stablecoin cross-chain routing still previews in receive mode, where Rhino returns payAmount = receive principal + source fee. With a 30.041003 USDC balance, max therefore asks the recipient to receive 30.041003, payAmount exceeds 30.041003, and the existing insufficientForFee gate disables confirmation; the full-balance action cannot complete an SDA withdrawal. This is the same defect raised on both earlier heads. Quote max SDA withdrawals with the balance as the pay budget (or subtract/requote the fee and rebuild the request/charge), and cover a nonzero-fee max withdrawal that can confirm while debiting no more than the balance.
Checked clean
- Supplied head SHA, base ref, base SHA, PR author, and merge base all match the exact detached review target.
- Earlier finding Reserve the SDA fee for a max withdrawal: STILL PRESENT. The full live balance remains the receive principal, so Rhino adds a fee above it.
- Earlier finding Make full balance account for SDA fees: STILL PRESENT. It is the same surviving defect and is consolidated into one current finding.
- Balance-fill truncation, max-intent clearing after edits, live-balance guard behavior, same-chain exact debit, non-stable bridge pay-mode behavior, translations, and keyboard accessibility were checked.
- The charge/request API accepts the new full-precision decimal strings; no additional API-contract defect was found.
- Security, adversarial, and slop passes found no additional actionable trust-boundary, injection, secret-exposure, dead-code, or architecture-drift issue in the changed behavior.
- All exact-head GitHub checks completed successfully, including unit, typecheck, eslint, format, analyze, design-system checks, deploy preview, and the aggregate ci-success gate.
- Local tests were not repeated because exact-head CI was green and the supplied detached worktree was kept read-only.
Second opinion skipped: daily-budget-reached.
Exact head: 80c0b05c9ad8 · Context: repo, api
…' into feat/withdraw-use-full-balance
…nd on every path Chip's open findings on this PR all reduce to one thing: a full-balance withdraw asked Rhino for "deliver X" (receive mode), Rhino answered "pay X plus fee", and the confirm gate refused. That fee was a phantom — the public quote's generic schedule; our account is 1:1 (peanut-api-ts#1480, peanut-ui#2902, which this branch now stacks on). As insurance against a future config change, a withdraw now quotes the SDA in pay mode by the source amount, so the pay side can never exceed the balance and any fee comes out of the delivery. The pre-sign gate no longer cares whether the route is cross-chain: the kernel spend must fit the live balance on every path, which also answers the kimi-k3 overdraw thread. TASK-21899
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/chip review |
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Chip review — no blocking findings — this is not an approval
Clean. Both earlier SDA fee-budget findings are fixed: withdrawals now quote in pay mode from the source budget, and Confirm gates the quoted kernel spend against the live balance on every route.
Checked clean
- FIXED — the 80c0b05 finding at withdraw/crypto/page.tsx:242: a max SDA withdrawal is now quoted in pay mode from effectiveAmount, so any future Rhino fee comes out of delivery instead of being added above the wallet budget.
- FIXED — the 6de65ff finding at withdraw/crypto/page.tsx:183: the source amount now carries the exact fee-inclusive spend budget, and payAmount is checked against the live spendable balance before signing.
- Verified full-balance state propagation: the balance tap floors to the displayed denomination, marks max intent separately, manual edits clear that intent, and crypto resolves the sub-cent remainder only while the live balance still floors to the amount shown.
- Verified the resolved effective amount is used consistently for request/charge setup, route calculation, same-chain sendMoney execution, and cross-chain requiredUsdcAmount funding.
- Verified SDA withdrawals use pay mode while pay-request and claim contexts retain receive mode; bridge and same-chain route construction remain compatible with the quoted payAmount contract.
- Checked amount drift and affordability paths: balance decreases are blocked at Confirm on same-chain and cross-chain routes, while deposits that cross the displayed-cent boundary do not silently enlarge a max withdrawal.
- Checked AmountInput opt-in scope, disabled/zero/sub-cent behavior, currency spacing, keyboard handling, translations, context reset, and the changed withdrawal tests.
- Security pass found no new authorization, secret, injection, or external-navigation trust boundary in the changed code.
- Exact-head CI reports unit, typecheck, eslint, format, design-system lint, analysis, and aggregate ci-success successful; ds-shots remained in progress when checked. Local tests were not rerun because the detached worktree has no node_modules.
- The internal Rhino fee note referenced by the PR description was not present in the available product checkout; fee behavior was verified from the pinned repository contracts and exact-head code instead.
Second opinion skipped: openrouter-timeout.
Exact head: c92839b844cb · Context: repo
…' into feat/withdraw-use-full-balance # Conflicts: # src/app/(mobile-ui)/withdraw/crypto/page.tsx
…' into feat/withdraw-use-full-balance
…' into feat/withdraw-use-full-balance
…' into feat/withdraw-use-full-balance
Stacked on peanut-ui#2902 (which requires peanut-api-ts#1480 deployed first). The base is
fix/21991-network-fee-one-sourceso the diff shows only this PR; GitHub re-targets it todevwhen #2902 merges. Merge order: api#1480 → ui#2902 → this.Summary
The withdrawal amount screen showed the available balance but made users type it. Withdrawing everything was guesswork.
The balance amount is now a button. One tap fills it, and the amount stays editable afterwards.
Task: TASK-21899 — "Add a Use full balance action to withdrawal amount"
What changed
AmountInputtakes an optionalbalanceFillAmount. When set, the amount alone becomes a<button>(44px tap target, underlined,aria-label"Use full balance: $…") — the word "Balance:" stays a plain label, since it was never the action. Without the prop the row renders as before, so every other caller keeps its plain balance row./withdraw, the shared USD step for the crypto, bank and Manteca paths) passesmaxDecimalAmount, the same numbervalidateAmountand the Continue gate compare against.formatNumberForDisplay,roundingMode: 'trunc'), so the fill matches the number under the user's thumb and never claims more than the wallet holds. Flooring alone stranded the remainder, though — after a max withdrawal the wallet reads$0.00while still holding dust the row is too small to offer again. So the intent is carried instead of the extra digits:WithdrawFlowContextgainsisMaxWithdrawal, set when the balance tap fills the field and cleared by any keystroke, and the crypto path resolves the amount from the live balance at spend time. Bank and Manteca settle in fiat cents and are untouched.resolveWithdrawAmount, unit-tested): the live balance is used only while it still floors to the amount on screen. A deposit landing between the tap and the confirm cannot silently enlarge the withdrawal, and a balance that dropped cannot overdraw — either way it falls back to the number the user saw and agreed to.$ 10.12with a space. A currency symbol sits against the number and an ISO code takes a space (USD 10.12) — the CLDR rule for en-US, which is how the amount itself is formatted. This one lands on every screen with a balance row, not just withdraw.en,es-419,pt-BR(es-ARinheritses-419).Screenshots
375x667. Balance is $10.126123, displayed and filled as
10.12.10.12— the crypto withdrawal then moves the full10.126123.Both columns already show the
$10.12spacing fix, which applies to the row either way.Captured from the real
AmountInputwith the props the withdraw amount screen passes, rendered on a scratch/devroute. Re-captured after the merge withdev, which moved this component onto the DS bordered container (#2813 line) — the earlier v3 shots showed the pre-DS render. The full/withdrawscreen could not be driven end to end here: the local sandbox API does not boot on this machine for an unrelated reason (@rhino.fi/sdkno longer exportsRhinoSdkagainst the installed 1.12.1). Nothing outside this row changes on that screen.Design notes / accepted trade-offs
$10.126123on the bank confirm and success screens, which interpolateamountToWithdrawraw ([country]/bank/page.tsx:457,:571)./withdraw/mantecais 2 decimals behind a price lock, so a 6-decimal amount there is meaningless.AmountInputalready receiveswalletBalanceon the send, request, add-money and QR-pay screens. Making every balance row tappable is a product decision beyond this task, so the behavior only turns on where a caller asks for it./withdraw/mantecais not covered — it is denominated in ARS/BRL at 2 decimals behind a price lock, so a "full balance" there means converting the USD balance at the sell rate, which can land above the balance. It needs its own design pass. The shared USD step at/withdrawdoes offer the fill for Manteca users, because there the field and the balance are both USD; the two screens share no amount state (/withdraw/mantecaholds its ownusdAmountand re-asks).useWalletdocuments that this total can briefly exceed what is available while collateral settles). Flooring to cents pulls the fill just under that ceiling, but a tap still lands near it far more often than typed entry did. It fails safe, with the settling message.isEditingRefbehavior for any edited field). Continue re-blocks against the live balance, so nothing overdrafts, and the crypto spend resolves against the live balance under the guard rails above.Design system
The branch now sits on
dev's DS line (merged in, not rebased — the repo blocks force-push):dev's DS-migratedAmountInput: semantic tokens only (text-foreground-secondary), no legacy palette classes (design.md laws 1–2; thelegacyColorClassesratchet stays at 0).action-focus, the default treatment (LinkButton's 2px is the documented sole exception).Flagged, not changed (design.md law 6): an underlined text-action has no DS precedent — the AmountInput board
17788:19201has no tappable balance row, andLinkButtonis navigation-only, never actions. Logged in monodesign/design.md→ open conflicts ("amountinput balance action"). @kushagrasarathe rules adopt-or-dismiss, including the figma half (❓frame next to the AmountInput board + ChangeLog entry — the dev seat is read-only). Until ruled, the action deliberately carries no hover/pressed state: states belong to a component, and no component covers this yet.Risk
Frontend only. Two blast radii worth separating:
$10.12spacing fix is not gated by that prop and changes the balance row on every screen that shows one — send, request, semantic request, contribute-pot, withdraw. Text only, no behavior.This now touches a money path. On the crypto path the spent amount is resolved at send time rather than read straight from the field, so
sendMoney, the route calculation, the request and the charge all useeffectiveAmount. Worth reading the diff inwithdraw/crypto/page.tsxandresolveWithdrawAmountdirectly rather than trusting this summary. Bank and Manteca paths are unchanged, and the displayed amount goes through the same validation as a typed one.QA
npm test— 293 suites / 3648 tests green, including 8resolveWithdrawAmounttests (remainder settled, mid-flow deposit ignored, balance drop never overdraws, sub-cent movement either side, loading, unparseable), 12AmountInputtests (floor-to-cents, never rounds up, coarse and fine denominations, amount-only tap target, symbol-vs-ISO spacing, zero balance, sub-cent balance, re-fill after an edit, keyboard) and 5 withdraw-page tests (flag set on tap and cleared on edit, full-precision prop handed down while the field shows cents, Continue enabling, below-minimum still blocked, no action while the balance loads).npm run typecheck,pnpm prettier --check .,npm run build— all clean.dev+ focus-ring commit: full suite green, typecheck and prettier clean.Screenshots live on the
pr-assets-2842branch; delete it after merge.Since the last review (2026-09-01)
Chip's three SDA-fee findings and the kimi-k3 overdraw finding reduce to one root cause, fixed upstream: the "fee" a full-balance withdraw could not afford was a phantom from Rhino's public quote (our account is 1:1 — $415.81 shown vs $0.14 deducted over 60 days; mono
ops/rhino-fee-display-fix.md). peanut-api-ts#1480 quotes the authenticated account fee and peanut-ui#2902 shows it verbatim, sopayAmount == receiveAmount.This PR adds two guards on top (
c92839b84):useCrossChainTransfer, contextwithdraw): the pay side is the live spend by construction, so a max withdrawal can never quote above the balance, and any fee Rhino ever quotes comes out of the delivery. Pay-request and claim keep receive mode. Under today's config no number changes.insufficientBalance(wasinsufficientForFee) blocks Confirm when the kernel spend (payAmount) exceeds the live balance, cross-chain or not — the kimi-k3 "balance dropped after the tap" case now stops at Confirm with an honest message.resolveWithdrawAmountstays as is.Tests:
useCrossChainTransfer.test.tspins pay mode for withdraw and receive mode for pay-request; the withdraw suites are unchanged and green.