archy/neode-ui/src/components/ReceiveBitcoinModal.vue

<template>
  <BaseModal :show="show" :title="t('web5.receiveBitcoinTitle')" max-width="max-w-2xl" content-class="max-h-[90vh] overflow-y-auto" @close="close">
        <!-- Method tabs -->
        <div class="flex gap-1 mb-4 p-1 bg-white/5 rounded-lg">
          <button
            v-for="m in (['onchain', 'lightning', 'ecash'] as const)"
            :key="m"
            @click="receiveMethod = m"
            class="flex-1 px-2 py-1.5 rounded text-xs font-medium capitalize transition-colors"
            :class="receiveMethod === m ? 'bg-white/15 text-white' : 'text-white/50 hover:text-white/80'"
          >{{ m === 'onchain' ? t('receiveBitcoin.onChain') : m === 'lightning' ? t('receiveBitcoin.lightning') : t('receiveBitcoin.ecash') }}</button>
        </div>

        <!-- Lightning -->
        <div v-if="receiveMethod === 'lightning'">
          <div class="mb-3">
            <label class="text-white/60 text-sm block mb-1">{{ t('receiveBitcoin.amountSats') }}</label>
            <input v-model.number="invoiceAmount" type="number" min="1" placeholder="1000" class="w-full input-glass" />
          </div>
          <div class="mb-3">
            <label class="text-white/60 text-sm block mb-1">{{ t('receiveBitcoin.memoOptional') }}</label>
            <input v-model="invoiceMemo" type="text" :placeholder="t('receiveBitcoin.memoPlaceholder')" class="w-full input-glass" />
          </div>
          <div v-if="invoiceResult" class="mb-3 p-3 bg-white/5 rounded-lg text-center">
            <canvas ref="lightningQrCanvas" class="mx-auto mb-3 rounded-lg" style="image-rendering: pixelated;"></canvas>
            <p class="text-white/50 text-xs mb-1">{{ t('receiveBitcoin.invoiceShareLabel') }}</p>
            <p class="text-xs font-mono text-white/80 break-all">{{ invoiceResult }}</p>
            <button @click="copyText(invoiceResult)" class="mt-2 text-xs text-orange-400 hover:text-orange-300">{{ t('common.copy') }}</button>
          </div>
        </div>

        <!-- On-chain -->
        <div v-if="receiveMethod === 'onchain'">
          <div v-if="onchainAddress" class="mb-3 p-3 bg-white/5 rounded-lg text-center">
            <canvas ref="onchainQrCanvas" class="mx-auto mb-3 rounded-lg" style="image-rendering: pixelated;"></canvas>
            <p class="text-white/50 text-xs mb-2">{{ t('receiveBitcoin.yourBitcoinAddress') }}</p>
            <p class="text-sm font-mono text-white/90 break-all">{{ onchainAddress }}</p>
            <button @click="copyText(onchainAddress)" class="mt-2 text-xs text-orange-400 hover:text-orange-300">{{ t('common.copy') }}</button>
          </div>
          <div v-else class="mb-3 text-center">
            <p class="text-white/50 text-sm mb-2">{{ t('web5.generateFreshAddress') }}</p>
            <p v-if="processing" class="text-xs text-white/40">Checking Lightning wallet readiness...</p>
          </div>
        </div>

        <!-- Ecash -->
        <div v-if="receiveMethod === 'ecash'">
          <div class="mb-3">
            <label class="text-white/60 text-sm block mb-1">{{ t('receiveBitcoin.pasteEcashToken') }}</label>
            <textarea v-model="ecashToken" rows="3" placeholder="cashuB… (Cashu) or Fedimint notes" class="w-full input-glass font-mono"></textarea>
          </div>
          <div v-if="ecashResult" class="mb-3 text-xs text-green-400">{{ ecashResult }}</div>
        </div>

        <div v-if="error" class="mb-3 alert-error">{{ error }}</div>

        <div class="flex gap-3">
          <button @click="close" class="flex-1 glass-button px-4 py-2 rounded-lg text-sm">{{ t('common.close') }}</button>
          <button @click="receive" :disabled="processing" class="flex-1 glass-button glass-button-success px-4 py-2 rounded-lg text-sm font-medium disabled:opacity-50">
            {{ processing ? t('receiveBitcoin.processing') : receiveMethod === 'onchain' ? t('receiveBitcoin.generateAddress') : receiveMethod === 'lightning' ? t('receiveBitcoin.createInvoice') : t('receiveBitcoin.receive') }}
          </button>
        </div>
  </BaseModal>
</template>

<script setup lang="ts">
import { ref, nextTick } from 'vue'
import { useI18n } from 'vue-i18n'
import { rpcClient } from '@/api/rpc-client'
import BaseModal from '@/components/BaseModal.vue'
import { explainReceiveAddressFailure } from '@/utils/bitcoinReceive'

const { t } = useI18n()

defineProps<{ show: boolean }>()
const emit = defineEmits<{ close: []; received: [] }>()

const receiveMethod = ref<'lightning' | 'onchain' | 'ecash'>('onchain')
const invoiceAmount = ref<number>(0)
const invoiceMemo = ref('')
const invoiceResult = ref('')
const onchainAddress = ref('')
const ecashToken = ref('')
const ecashResult = ref('')
const onchainQrCanvas = ref<HTMLCanvasElement | null>(null)
const lightningQrCanvas = ref<HTMLCanvasElement | null>(null)
const processing = ref(false)
const error = ref('')

async function renderQr(data: string, canvas: HTMLCanvasElement | null, prefix = '') {
  if (!canvas || !data) return
  try {
    const QRCode = await import('qrcode')
    await QRCode.toCanvas(canvas, prefix ? `${prefix}${data}` : data, {
      width: 200,
      margin: 2,
      color: { dark: '#000000', light: '#ffffff' },
    })
  } catch { /* QR rendering failed silently */ }
}

function close() {
  invoiceResult.value = ''
  onchainAddress.value = ''
  ecashToken.value = ''
  ecashResult.value = ''
  error.value = ''
  emit('close')
}

function copyText(text: string) {
  navigator.clipboard.writeText(text).catch(() => {})
}

async function receive() {
  processing.value = true
  error.value = ''
  try {
    if (receiveMethod.value === 'lightning') {
      if (!invoiceAmount.value) { error.value = t('receiveBitcoin.enterAnAmount'); return }
      const res = await rpcClient.call<{ payment_request: string }>({
        method: 'lnd.createinvoice',
        params: { amount_sats: invoiceAmount.value, memo: invoiceMemo.value || undefined },
      })
      invoiceResult.value = res.payment_request
      nextTick(() => renderQr(res.payment_request, lightningQrCanvas.value, 'lightning:'))
    } else if (receiveMethod.value === 'onchain') {
      const res = await rpcClient.call<{ address: string }>({ method: 'lnd.newaddress' })
      if (!res.address) {
        throw new Error('LND did not return a Bitcoin address')
      }
      onchainAddress.value = res.address
      nextTick(() => renderQr(res.address, onchainQrCanvas.value, 'bitcoin:'))
    } else {
      if (!ecashToken.value.trim()) { error.value = t('receiveBitcoin.pasteAnEcashToken'); return }
      // The backend auto-detects the token type: a Cashu token (cashuA/B…) is
      // redeemed at its mint, anything else is reissued as Fedimint notes.
      const res = await rpcClient.call<{ received_sats?: number; kind?: string }>({
        method: 'wallet.ecash-receive',
        params: { token: ecashToken.value.trim() },
      })
      const kind = res.kind === 'fedimint' ? 'Fedimint' : 'Cashu'
      ecashResult.value = res.received_sats != null
        ? `Received ${res.received_sats.toLocaleString()} sats (${kind})!`
        : t('receiveBitcoin.tokenReceivedSuccess')
      emit('received')
    }
  } catch (err: unknown) {
    error.value = receiveMethod.value === 'onchain'
      ? explainReceiveAddressFailure(err)
      : err instanceof Error ? err.message : 'Failed'
  } finally {
    processing.value = false
  }
}
</script>