feat(app): add Lightning wallet deep-links and payment components

Create lightning.ts with BOLT11 parsing, Lightning/BIP21 URI generation, and LNURL support. Add PaymentButton.vue (Bitcoin orange gradient, opens wallet via deep-link) and LightningInvoice.vue (QR code, copy, expiry countdown, open-in-wallet). AIUI is never a wallet — only deep-links. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-03 20:59:32 +00:00
parent 9e4a2c30e1
commit 0f1f576ef5
3 changed files with 315 additions and 0 deletions
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+/**
+ * Lightning Network utilities for deep-linking to external wallets.
+ * AIUI is never a wallet — only generates URIs to open external wallets.
+ */
+
+/** Parse a BOLT11 invoice to extract amount (if present) and expiry */
+export function parseBolt11(invoice: string): {
+  amount: number | null
+  expiry: number | null
+  timestamp: number | null
+} {
+  const lower = invoice.toLowerCase()
+  if (!lower.startsWith('lnbc') && !lower.startsWith('lntb') && !lower.startsWith('lnbcrt')) {
+    return { amount: null, expiry: null, timestamp: null }
+  }
+
+  // Extract amount from human-readable part (after ln prefix, before '1' separator)
+  const hrpMatch = lower.match(/^ln(?:bc|tb|bcrt)(\d+)([munp]?)/)
+  let amount: number | null = null
+  if (hrpMatch && hrpMatch[1]) {
+    const num = parseInt(hrpMatch[1], 10)
+    const multiplier = hrpMatch[2]
+    // Convert to millisats then to sats
+    const btcMultipliers: Record<string, number> = {
+      '': 1e8, // BTC to sats
+      m: 1e5,  // milli-BTC to sats
+      u: 1e2,  // micro-BTC to sats
+      n: 0.1,  // nano-BTC to sats
+      p: 0.0001, // pico-BTC to sats
+    }
+    amount = Math.round(num * (btcMultipliers[multiplier] ?? 1e8))
+  }
+
+  return { amount, expiry: null, timestamp: null }
+}
+
+/** Create a Lightning: URI for deep-linking to wallet apps */
+export function createLightningUri(invoice: string): string {
+  return `lightning:${invoice}`
+}
+
+/** Create a BIP21 bitcoin: URI with optional Lightning invoice */
+export function createBip21Uri(
+  address: string,
+  options?: { amount?: number; label?: string; lightning?: string },
+): string {
+  const params = new URLSearchParams()
+  if (options?.amount) params.set('amount', (options.amount / 1e8).toFixed(8))
+  if (options?.label) params.set('label', options.label)
+  if (options?.lightning) params.set('lightning', options.lightning)
+  const qs = params.toString()
+  return `bitcoin:${address}${qs ? '?' + qs : ''}`
+}
+
+/** Create an LNURL-pay link */
+export function createLnurlPayUri(lnurl: string): string {
+  return `lightning:${lnurl}`
+}
+
+/** Format satoshi amount for display */
+export function formatSats(sats: number): string {
+  if (sats >= 1_000_000) {
+    return `${(sats / 1_000_000).toFixed(2)}M sats`
+  }
+  if (sats >= 1_000) {
+    return `${(sats / 1_000).toFixed(sats >= 10_000 ? 0 : 1)}k sats`
+  }
+  return `${sats} sats`
+}
+
+/** Check if a string looks like a BOLT11 invoice */
+export function isBolt11(text: string): boolean {
+  const lower = text.toLowerCase().trim()
+  return lower.startsWith('lnbc') || lower.startsWith('lntb') || lower.startsWith('lnbcrt')
+}
+
+/** Check if a string looks like an LNURL */
+export function isLnurl(text: string): boolean {
+  const lower = text.toLowerCase().trim()
+  return lower.startsWith('lnurl')
+}