Pending Ecash Sweeper

Reclaim unclaimed sent ecash tokens back to your wallet

Overview

When you send ecash tokens, they remain in a “pending” state until the recipient claims them. The Pending Ecash Sweeper allows you to rollback (reclaim) these unclaimed tokens back to your wallet.

Pending Transaction States

Send States

app/pendingEcash.tsx

const pendingSends = useMemo(() => {
  return history.filter(
    (entry): entry is SendHistoryEntry =>
      entry.type === 'send' && (entry.state === 'pending' || entry.state === 'prepared')
  );
}, [history]);

Prepared: Token created but not yet shared or delivered

Pending: Token shared, waiting for recipient to claim

Pending Ecash Screen

Grouped by Mint

Pending transactions are organized by mint:

app/pendingEcash.tsx

const pendingByMint = useMemo(() => {
  return _.groupBy(pendingSends, 'mintUrl');
}, [pendingSends]);

const mintsWithPending = useMemo(
  () => mints.filter((mint) => (pendingByMint[mint.mintUrl]?.length || 0) > 0),
  [mints, pendingByMint]
);

Mint Tabs

Tabs show pending count and total amount per mint:

app/pendingEcash.tsx

function AnimatedMintTab({
  mint,
  isSelected,
  pendingCount,
  totalAmount,
  unit,
  onPress,
}: AnimatedMintTabProps) {
  const displayName = mint.mintInfo?.name || extractDomain(mint.mintUrl) || 'Unknown';

  return (
    <TouchableOpacity onPress={onPress} activeOpacity={0.7}>
      <View
        style={[
          styles.tabContainer,
          {
            backgroundColor: isSelected ? primaryColor700 : primaryColor900,
            paddingHorizontal: LARGE_PADDING_H,
            paddingVertical: LARGE_PADDING_V,
          },
        ]}>
        <View style={[styles.tabContent, { gap: LARGE_GAP }]}>
          <View style={styles.iconContainer}>
            <Avatar
              picture={mint.mintInfo?.icon_url || undefined}
              size={LARGE_ICON_SIZE}
              variant="mint"
              name={displayName}
              alt={`${displayName} icon`}
            />
          </View>
          <VStack>
            <Animated.Text
              style={[styles.tabText, { color: primaryColor0, fontSize: LARGE_FONT_SIZE }]}
              numberOfLines={1}>
              {displayName}
            </Animated.Text>
            <HStack align="center" gap={2}>
              <AmountFormatter
                amount={totalAmount}
                unit={unit}
                size={10}
                weight="heavy"
                color={primaryColor300}
              />
              <Text size={10} style={{ color: primaryColor300 }}>
                • {pendingCount} pending
              </Text>
            </HStack>
          </VStack>
        </View>
      </View>
    </TouchableOpacity>
  );
}

Rollback Operation

Individual Rollback

Rollback a single pending transaction:

try {
  await manager.send.rollback(tx.operationId);
  successCount++;
} catch (error) {
  console.error(`Failed to rollback ${tx.operationId}:`, error);
  failCount++;
}

Bulk Rollback (Sweep)

Rollback all pending transactions for a mint:

app/pendingEcash.tsx

const handleSweep = useCallback(async () => {
  if (isSweeping || displayedTransactions.length === 0) return;

  setIsSweeping(true);
  let successCount = 0;
  let failCount = 0;

  for (const tx of displayedTransactions) {
    // Add to rolling back set to show spinner
    setRollingBackIds((prev) => new Set(prev).add(tx.operationId));

    try {
      await manager.send.rollback(tx.operationId);
      successCount++;
    } catch (error) {
      console.error(`Failed to rollback ${tx.operationId}:`, error);
      failCount++;
    } finally {
      // Remove from rolling back set
      setRollingBackIds((prev) => {
        const newSet = new Set(prev);
        newSet.delete(tx.operationId);
        return newSet;
      });
    }
  }

  setIsSweeping(false);

  if (failCount === 0) {
    rollbackSuccessPopup(
      { count: successCount },
      {
        onClose: () => {
          router.back();
        },
      }
    );
  } else {
    rollbackPartialPopup({
      success: successCount,
      failed: failCount,
      total: displayedTransactions.length,
    });
  }
}, [isSweeping, displayedTransactions, manager]);

Loading States

Individual transactions show loading state during rollback:

app/pendingEcash.tsx

const [rollingBackIds, setRollingBackIds] = useState<Set<string>>(new Set());

{transactions.map((tx) => (
  <Transaction
    key={tx.id}
    historyEntry={tx as HistoryEntry}
    isLoading={rollingBackIds.has(tx.operationId)}
  />
))}

Hero Card

The pending ecash screen features a hero card showing total pending count:

app/pendingEcash.tsx

<PendingEcashCardFrame
  accentColor={accentColor}
  backgroundColor={background}
  highlightColor={surfaceForeground}>
  <VStack style={{ padding: 18, paddingTop: 52 + topOffset, zIndex: 1 }}>
    <HStack align="center" gap={10}>
      <View
        style={[styles.heroIcon, { backgroundColor: opacity(accentColor, 0.16) }]}>
        <Icon name="mdi:clock-alert-outline" size={22} color={accentColor} />
      </View>
      <VStack>
        <Text size={18} heavy style={{ color: opacity(foreground, 0.9) }}>
          Pending Ecash
        </Text>
        <Text size={12} style={{ color: opacity(accentColor, 0.7) }}>
          {pendingSends.length} unclaimed{' '}
          {pendingSends.length === 1 ? 'token' : 'tokens'}
        </Text>
      </VStack>
    </HStack>
  </VStack>
</PendingEcashCardFrame>

Card Frame

Custom gradient card frame for pending ecash:

components/blocks/pending/PendingEcashCardFrame.tsx

const LEFT_ICON = {
  name: 'mdi:clock-outline',
  size: 90,
  style: { top: -18, left: -18, transform: [{ rotate: '-12deg' as const }] },
} as const;

const RIGHT_ICON = {
  name: 'mdi:cash-multiple',
  size: 140,
  style: { bottom: -34, right: -34, transform: [{ rotate: '14deg' as const }] },
} as const;

export function PendingEcashCardFrame({
  accentColor,
  backgroundColor,
  highlightColor,
  children,
}: {
  accentColor: string;
  backgroundColor: string;
  highlightColor: string;
  children?: React.ReactNode;
}) {
  return (
    <GradientCardFrame
      accentColor={accentColor}
      backgroundColor={backgroundColor}
      highlightColor={highlightColor}
      leftIcon={LEFT_ICON}
      rightIcon={RIGHT_ICON}>
      {children}
    </GradientCardFrame>
  );
}

Sweep Button

Bottom button shows total amount being reclaimed:

app/pendingEcash.tsx

const sweepButton = useMemo(() => {
  if (!effectiveSelectedMint || displayedTransactions.length === 0) {
    return undefined;
  }
  return (
    <BottomButtons>
      <ButtonHandler
        buttons={[
          {
            text: isSweeping
              ? 'Rolling back...'
              : `Rollback ${displayedTransactions.length} Pending (${totalPendingAmount} ${totalUnit.toUpperCase()})`,
            variant: 'primary',
            icon: 'mdi:broom',
            loading: isSweeping,
            disabled: isSweeping || displayedTransactions.length === 0,
            onPress: async () => {
              await handleSweep();
            },
          },
        ]}
      />
    </BottomButtons>
  );
}, [
  effectiveSelectedMint,
  displayedTransactions,
  totalPendingAmount,
  totalUnit,
  isSweeping,
  handleSweep,
]);

Empty State

Shown when no pending ecash exists:

app/pendingEcash.tsx

{mintsWithPending.length === 0 && (
  <Animated.View
    style={[
      contentAnimStyle,
      {
        paddingHorizontal: 16,
        marginTop: -HEADER_OVERLAP,
        paddingTop: HEADER_OVERLAP,
      },
    ]}>
    <View style={styles.emptyState}>
      <Icon name="mdi:check-circle-outline" size={48} color={opacity(foreground, 0.33)} />
      <Spacer size={12} />
      <Text size={18} heavy style={{ color: opacity(foreground, 0.8) }}>
        No Pending Ecash
      </Text>
      <Text
        size={14}
        style={{
          color: opacity(foreground, 0.4),
          textAlign: 'center',
          marginTop: 4,
        }}>
        All your sent ecash has been claimed
      </Text>
    </View>
  </Animated.View>
)}

Hero Transition

The pending ecash screen uses hero transitions for smooth navigation:

app/pendingEcash.tsx

const heroRef = useRef<RNView>(null);

const handleHeroLayout = useCallback(() => {
  hero.registerRef('pendingEcash', 'destination', heroRef.current);
}, [hero]);

const handleClose = useCallback(() => {
  hero.closePendingEcash();
}, [hero]);

<RNView
  ref={heroRef}
  onLayout={handleHeroLayout}
  collapsable={false}
  shouldRasterizeIOS
  renderToHardwareTextureAndroid
  style={[
    styles.heroCard,
    {
      borderColor: opacity(accentColor, 0.25),
      opacity: hero.isHidden('pendingEcash', 'destination') ? 0 : 1,
      marginTop: -topOffset,
      paddingTop: topOffset,
    },
  ]}>
  <PendingEcashCardFrame />
</RNView>

Use Cases

Accidental Sends

Reclaim tokens sent by mistake before recipient claims

Expired Offers

Rollback promotional or time-limited token offers

Failed Deliveries

Reclaim tokens that couldn’t be delivered to recipient

Wallet Cleanup

Periodically sweep old pending tokens back to active balance

Best Practices

• Check pending ecash regularly to reclaim unclaimed tokens
• Wait reasonable time before reclaiming (recipient may be slow to claim)
• Consider notifying recipient before reclaiming if via Nostr
• Use sweep feature to reclaim multiple tokens efficiently