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Support rebalance and validate purchase splits

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Add ParticipantShare type and client-side rebalance/validation helpers for purchase splits (rebalancePurchaseSplit, recalculatePercentages, calculateRemainingToAllocate, validatePurchaseDraft). Integrate rebalancing and validation into the miniapp ledger UI (auto-adjust shares, percentage<>amount syncing, remaining/error display, prefill participants on new purchase, disable save when invalid). On the backend, tighten input validation in finance-command-service for custom_amounts (require explicit shares and sum match) and make settlement-engine more lenient when reading legacy/malformed custom splits (ignore missing shares, accept explicit subset). Also add a test ensuring dashboard generation doesn't 500 on legacy malformed purchases.
This commit is contained in:
whekin
2026-03-13 07:41:31 +04:00
parent ba99460a34
commit 588174fa52
5 changed files with 354 additions and 40 deletions
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83
apps/miniapp/src/routes/ledger.tsx
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@@ -18,9 +18,13 @@ import {
purchaseDraftForEntry,
paymentDraftForEntry,
computePaymentPrefill,
rebalancePurchaseSplit,
validatePurchaseDraft,
calculateRemainingToAllocate,
type PurchaseDraft,
type PaymentDraft
} from '../lib/ledger-helpers'
import { minorToMajorString } from '../lib/money'
import {
addMiniAppPurchase,
updateMiniAppPurchase,
@@ -361,6 +365,9 @@ export default function LedgerRoute() {
draft: PurchaseDraft,
updateDraft: (fn: (d: PurchaseDraft) => PurchaseDraft) => void
) {
const remaining = () => calculateRemainingToAllocate(draft)
const validation = () => validatePurchaseDraft(draft)
return (
<div
class="split-configuration"
@@ -380,7 +387,8 @@ export default function LedgerRoute() {
updateDraft((d) => {
const newParticipants = [...d.participants]
newParticipants[idx()] = { ...participant, included: checked }
return { ...d, participants: newParticipants }
const updated = { ...d, participants: newParticipants }
return rebalancePurchaseSplit(updated, null, null)
})
}}
/>
@@ -392,13 +400,15 @@ export default function LedgerRoute() {
placeholder="0.00"
value={participant.shareAmountMajor}
onInput={(e) => {
const value = e.currentTarget.value
updateDraft((d) => {
const newParticipants = [...d.participants]
newParticipants[idx()] = {
...participant,
shareAmountMajor: e.currentTarget.value
shareAmountMajor: value
}
return { ...d, participants: newParticipants }
const updated = { ...d, participants: newParticipants }
return rebalancePurchaseSplit(updated, participant.memberId, value)
})
}}
/>
@@ -410,24 +420,21 @@ export default function LedgerRoute() {
placeholder="%"
value={participant.sharePercentage}
onInput={(e) => {
const value = e.currentTarget.value
const percentage = parseFloat(value) || 0
const totalMajor = parseFloat(draft.amountMajor) || 0
const exactAmount = (totalMajor * percentage) / 100
const newAmountMajor = exactAmount > 0 ? exactAmount.toFixed(2) : ''
updateDraft((d) => {
const newParticipants = [...d.participants]
newParticipants[idx()] = {
...participant,
sharePercentage: e.currentTarget.value
sharePercentage: value,
shareAmountMajor: newAmountMajor
}
// Calculate exact amount based on percentage
const percentage = parseFloat(e.currentTarget.value) || 0
const totalMajor = parseFloat(d.amountMajor) || 0
const exactAmount = (totalMajor * percentage) / 100
const nextParticipant = newParticipants[idx()]
if (nextParticipant) {
nextParticipant.shareAmountMajor =
exactAmount > 0 ? exactAmount.toFixed(2) : ''
}
return { ...d, participants: newParticipants }
const updated = { ...d, participants: newParticipants }
return rebalancePurchaseSplit(updated, participant.memberId, newAmountMajor)
})
}}
/>
@@ -436,6 +443,19 @@ export default function LedgerRoute() {
)
}}
</For>
<Show when={draft.splitInputMode !== 'equal' && draft.participants.some((p) => p.included)}>
<div
style={{
'font-size': '12px',
'margin-top': '4px',
color: validation().valid ? '#22c55e' : '#ef4444'
}}
>
{validation().error
? validation().error
: `Remaining: ${minorToMajorString(remaining() > 0n ? remaining() : -remaining())} ${draft.currency}`}
</div>
</Show>
</div>
)
}
@@ -456,7 +476,28 @@ export default function LedgerRoute() {
<Collapsible title={copy().purchasesTitle} body={copy().purchaseReviewBody} defaultOpen>
<Show when={effectiveIsAdmin()}>
<div class="ledger-actions">
<Button variant="primary" size="sm" onClick={() => setAddPurchaseOpen(true)}>
<Button
variant="primary"
size="sm"
onClick={() => {
const members = dashboard()?.members ?? []
const currency = (dashboard()?.currency as 'USD' | 'GEL') ?? 'GEL'
setNewPurchase({
description: '',
amountMajor: '',
currency,
splitMode: 'equal',
splitInputMode: 'equal',
participants: members.map((m) => ({
memberId: m.memberId,
included: true,
shareAmountMajor: '',
sharePercentage: ''
}))
})
setAddPurchaseOpen(true)
}}
>
<Plus size={14} />
{copy().purchaseSaveAction}
</Button>
@@ -592,7 +633,12 @@ export default function LedgerRoute() {
<Button
variant="primary"
loading={addingPurchase()}
disabled={!newPurchase().description.trim() || !newPurchase().amountMajor.trim()}
disabled={
!newPurchase().description.trim() ||
!newPurchase().amountMajor.trim() ||
(newPurchase().splitInputMode !== 'equal' &&
!validatePurchaseDraft(newPurchase()).valid)
}
onClick={() => void handleAddPurchase()}
>
{copy().purchaseSaveAction}
@@ -665,6 +711,7 @@ export default function LedgerRoute() {
<Button
variant="primary"
loading={savingPurchase()}
disabled={purchaseDraft() ? !validatePurchaseDraft(purchaseDraft()!).valid : false}
onClick={() => void handleSavePurchase()}
>
{savingPurchase() ? copy().savingPurchase : copy().purchaseSaveAction}