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feat(wallet): invoice-first lightning send — amount locks from the pasted invoice

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A pasted fixed-amount invoice auto-fills and locks the amount ('set by
invoice' — nothing to type, just review and send); zero-amount invoices get
an explicit 'enter how many sats' hint. Plus a clipboard Paste button on the
destination field (hidden where clipboard read can't work).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
archipelago 2026-07-23 16:15:43 -04:00
parent f72d4b92ac
commit 80875a2ed4
1 changed files with 50 additions and 5 deletions
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55
neode-ui/src/components/SendBitcoinModal.vue
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@ -67,6 +67,7 @@
<div class="mb-3">
<div class="flex items-center justify-between mb-1">
<label class="text-white/60 text-sm">{{ t('sendBitcoin.amountSats') }}</label>
<span v-if="pastedInvoiceAmount !== null" class="text-[11px] px-2 py-0.5 rounded-full bg-white/10 text-white/50">set by invoice</span>
<button
v-if="sendMethod === 'onchain'"
@click="toggleSendAll"
@ -82,19 +83,34 @@
v-model.number="amount"
type="number"
min="1"
:placeholder="sendAll ? '' : '1000'"
:disabled="sendAll"
:placeholder="sendAll ? '' : pastedInvoiceAmount !== null ? '' : '1000'"
:disabled="sendAll || pastedInvoiceAmount !== null"
class="w-full input-glass disabled:opacity-50"
/>
<p v-if="sendAll" class="text-xs text-white/50 mt-1">
Sweeps your entire on-chain balance{{ onchainBalance !== null ? ` (~${onchainBalance.toLocaleString()} sats)` : '' }} minus network fees.
</p>
<p v-else-if="pastedInvoiceAmount !== null" class="text-xs text-white/50 mt-1">
This invoice fixes the amount — nothing to type, just review and send.
</p>
<p v-else-if="effectiveMethod === 'lightning' && dest.trim()" class="text-xs text-white/50 mt-1">
Zero-amount invoice — enter how many sats to pay.
</p>
</div>
<div v-if="effectiveMethod !== 'ecash'" class="mb-3">
<label class="text-white/60 text-sm block mb-1">
{{ effectiveMethod === 'lightning' ? t('sendBitcoin.lightningInvoice') : effectiveMethod === 'ark' ? 'Ark address, invoice or lightning address' : t('sendBitcoin.bitcoinAddress') }}
</label>
<div class="flex items-center justify-between mb-1">
<label class="text-white/60 text-sm">
{{ effectiveMethod === 'lightning' ? t('sendBitcoin.lightningInvoice') : effectiveMethod === 'ark' ? 'Ark address, invoice or lightning address' : t('sendBitcoin.bitcoinAddress') }}
</label>
<button
v-if="canReadClipboard"
@click="pasteFromClipboard"
class="text-xs px-2 py-0.5 rounded border bg-white/5 border-white/15 text-white/60 hover:text-white/90 transition-colors"
>
{{ effectiveMethod === 'lightning' ? 'Paste invoice' : 'Paste' }}
</button>
</div>
<textarea v-model="dest" rows="2" :placeholder="effectiveMethod === 'lightning' ? 'lnbc...' : effectiveMethod === 'ark' ? 'tark1… / lnbc… / user@lnaddress' : 'bc1...'" class="w-full input-glass font-mono"></textarea>
</div>
@ -177,6 +193,35 @@ function toggleSendAll() {
// Leaving the on-chain tab disarms the sweep so it can never apply elsewhere
watch(sendMethod, (m) => { if (m !== 'onchain') sendAll.value = false })
// Invoice-first lightning UX: a pasted invoice that fixes its amount locks
// the amount field (auto-filled, "set by invoice"); zero-amount invoices
// leave it editable. Clearing/leaving lightning unlocks again.
const pastedInvoiceAmount = computed<number | null>(() => {
if (effectiveMethod.value !== 'lightning') return null
const d = dest.value.trim()
if (!d) return null
return parseBolt11AmountSats(d.toLowerCase().startsWith('lightning:') ? d.slice(10) : d)
})
watch(pastedInvoiceAmount, (fixed, prev) => {
if (fixed !== null) amount.value = fixed
// Swapping a fixed-amount invoice for a zero-amount one: don't silently
// keep the previous invoice's sats — make the user type the new amount.
else if (prev !== null) amount.value = 0
})
// Clipboard read needs a secure context (or the companion bridge); hide the
// button where it can't work — the textarea still accepts a manual paste.
const canReadClipboard = typeof navigator !== 'undefined' && !!navigator.clipboard?.readText
async function pasteFromClipboard() {
try {
const text = (await navigator.clipboard.readText()).trim()
if (text) dest.value = text
} catch {
// Permission denied — user can long-press/Ctrl+V into the field instead.
}
}
const effectiveMethod = computed(() => {
if (sendMethod.value !== 'auto') return sendMethod.value
const amt = amount.value || 0