Release v0.1.0

vendor/github.com/muun/libwallet/invoice.go

@@ -0,0 +1,67 @@
+package libwallet
+
+import (
+	fmt "fmt"
+	"strings"
+
+	"github.com/lightningnetwork/lnd/zpay32"
+	"github.com/pkg/errors"
+)
+
+// Invoice is muun's invoice struct
+type Invoice struct {
+	RawInvoice      string
+	FallbackAddress *MuunPaymentURI
+	Network         *Network
+	MilliSat        string
+	Destination     []byte
+	PaymentHash     [32]byte
+	Expiry          int64
+	Description     string
+}
+
+const lightningScheme = "lightning:"
+
+// ParseInvoice parses an Invoice from an invoice string and a network
+func ParseInvoice(invoice string, network *Network) (*Invoice, error) {
+
+	if strings.HasPrefix(strings.ToLower(invoice), lightningScheme) {
+		// Remove lightning scheme from rawInvoice
+		invoice = invoice[len(lightningScheme):len(invoice)]
+	}
+
+	parsedInvoice, err := zpay32.Decode(invoice, network.network)
+	if err != nil {
+		return nil, errors.Wrapf(err, "Couldnt parse invoice")
+	}
+
+	var fallbackAdd *MuunPaymentURI
+
+	if parsedInvoice.FallbackAddr != nil {
+		fallbackAdd, err = GetPaymentURI(parsedInvoice.FallbackAddr.String(), network)
+		if err != nil {
+			return nil, errors.Wrapf(err, "Couldnt get address")
+		}
+	}
+
+	var description string
+	if parsedInvoice.Description != nil {
+		description = *parsedInvoice.Description
+	}
+
+	var milliSats string
+	if parsedInvoice.MilliSat != nil {
+		milliSats = fmt.Sprintf("%v", uint64(*parsedInvoice.MilliSat))
+	}
+
+	return &Invoice{
+		RawInvoice:      invoice,
+		FallbackAddress: fallbackAdd,
+		Network:         network,
+		MilliSat:        milliSats,
+		Destination:     parsedInvoice.Destination.SerializeCompressed(),
+		PaymentHash:     *parsedInvoice.PaymentHash,
+		Expiry:          parsedInvoice.Timestamp.Unix() + int64(parsedInvoice.Expiry().Seconds()),
+		Description:     description,
+	}, nil
+}