feat: invoice payment component

go.mod

@@ -3,15 +3,15 @@ module github.com/ardevd/flash
 go 1.21.1
 
 require (
-	github.com/btcsuite/btcd/btcutil v1.1.4-0.20230904040416-d4f519f5dc05
+	github.com/btcsuite/btcd/btcutil v1.1.5
 	github.com/charmbracelet/bubbles v0.17.1
 	github.com/charmbracelet/bubbletea v0.25.0
 	github.com/charmbracelet/huh v0.2.3
 	github.com/charmbracelet/lipgloss v0.9.1
 	github.com/charmbracelet/log v0.3.1
 	github.com/google/tink/go v1.7.0
 	github.com/lightninglabs/lndclient v1.0.1-0.20240116101412-67d851af8b54
-	github.com/lightningnetwork/lnd v0.17.3-beta.rc1
+	github.com/lightningnetwork/lnd v0.17.4-beta.rc1
 	github.com/muesli/termenv v0.15.2
 	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
 	github.com/stretchr/testify v1.8.4
@@ -26,12 +26,12 @@ require (
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/btcsuite/btcd v0.23.5-0.20230905170901-80f5a0ffdf36 // indirect
+	github.com/btcsuite/btcd v0.24.1-0.20240123000108-62e6af035ec5 // indirect
 	github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect
 	github.com/btcsuite/btcd/btcutil/psbt v1.1.8 // indirect
-	github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2 // indirect
+	github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0 // indirect
 	github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f // indirect
-	github.com/btcsuite/btcwallet v0.16.10-0.20231129183218-5df09dd43358 // indirect
+	github.com/btcsuite/btcwallet v0.16.10-0.20240127010340-16b422a2e8bf // indirect
 	github.com/btcsuite/btcwallet/wallet/txauthor v1.3.2 // indirect
 	github.com/btcsuite/btcwallet/wallet/txrules v1.2.0 // indirect
 	github.com/btcsuite/btcwallet/wallet/txsizes v1.2.3 // indirect
@@ -68,7 +68,7 @@ require (
 	github.com/google/btree v1.0.1 // indirect
 	github.com/google/uuid v1.3.1 // indirect
 	github.com/gorilla/css v1.0.0 // indirect
-	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/gorilla/websocket v1.5.0 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 // indirect
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect

go.sum

@@ -70,10 +70,10 @@ github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6r
 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
 github.com/btcsuite/btcd v0.22.0-beta.0.20220111032746-97732e52810c/go.mod h1:tjmYdS6MLJ5/s0Fj4DbLgSbDHbEqLJrtnHecBFkdz5M=
 github.com/btcsuite/btcd v0.22.0-beta.0.20220204213055-eaf0459ff879/go.mod h1:osu7EoKiL36UThEgzYPqdRaxeo0NU8VoXqgcnwpey0g=
-github.com/btcsuite/btcd v0.23.0/go.mod h1:0QJIIN1wwIXF/3G/m87gIwGniDMDQqjVn4SZgnFpsYY=
 github.com/btcsuite/btcd v0.23.1/go.mod h1:0QJIIN1wwIXF/3G/m87gIwGniDMDQqjVn4SZgnFpsYY=
-github.com/btcsuite/btcd v0.23.5-0.20230905170901-80f5a0ffdf36 h1:g/UbZ6iSzcUH9kEvC+rB8UBCqahmt69e8y6nCegczbg=
-github.com/btcsuite/btcd v0.23.5-0.20230905170901-80f5a0ffdf36/go.mod h1:0QJIIN1wwIXF/3G/m87gIwGniDMDQqjVn4SZgnFpsYY=
+github.com/btcsuite/btcd v0.23.5-0.20231215221805-96c9fd8078fd/go.mod h1:nm3Bko6zh6bWP60UxwoT5LzdGJsQJaPo6HjduXq9p6A=
+github.com/btcsuite/btcd v0.24.1-0.20240123000108-62e6af035ec5 h1:8BHBWvtP6kkzvmCpyWEznq4eS0gfLOSVuXLesv413Xs=
+github.com/btcsuite/btcd v0.24.1-0.20240123000108-62e6af035ec5/go.mod h1:5C8ChTkl5ejr3WHj8tkQSCmydiMEPB0ZhQhehpq7Dgg=
 github.com/btcsuite/btcd/btcec/v2 v2.1.0/go.mod h1:2VzYrv4Gm4apmbVVsSq5bqf1Ec8v56E48Vt0Y/umPgA=
 github.com/btcsuite/btcd/btcec/v2 v2.1.1/go.mod h1:ctjw4H1kknNJmRN4iP1R7bTQ+v3GJkZBd6mui8ZsAZE=
 github.com/btcsuite/btcd/btcec/v2 v2.1.3/go.mod h1:ctjw4H1kknNJmRN4iP1R7bTQ+v3GJkZBd6mui8ZsAZE=
@@ -82,19 +82,19 @@ github.com/btcsuite/btcd/btcec/v2 v2.3.2/go.mod h1:zYzJ8etWJQIv1Ogk7OzpWjowwOdXY
 github.com/btcsuite/btcd/btcutil v1.0.0/go.mod h1:Uoxwv0pqYWhD//tfTiipkxNfdhG9UrLwaeswfjfdF0A=
 github.com/btcsuite/btcd/btcutil v1.1.0/go.mod h1:5OapHB7A2hBBWLm48mmw4MOHNJCcUBTwmWH/0Jn8VHE=
 github.com/btcsuite/btcd/btcutil v1.1.1/go.mod h1:nbKlBMNm9FGsdvKvu0essceubPiAcI57pYBNnsLAa34=
-github.com/btcsuite/btcd/btcutil v1.1.4-0.20230904040416-d4f519f5dc05 h1:aemxF+69pT9sYC5E6Qj71zQVHcF72m0BNcVhCl3/thU=
-github.com/btcsuite/btcd/btcutil v1.1.4-0.20230904040416-d4f519f5dc05/go.mod h1:UR7dsSJzJUfMmFiiLlIrMq1lS9jh9EdCV7FStZSnpi0=
+github.com/btcsuite/btcd/btcutil v1.1.5 h1:+wER79R5670vs/ZusMTF1yTcRYE5GUsFbdjdisflzM8=
+github.com/btcsuite/btcd/btcutil v1.1.5/go.mod h1:PSZZ4UitpLBWzxGd5VGOrLnmOjtPP/a6HaFo12zMs00=
 github.com/btcsuite/btcd/btcutil/psbt v1.1.8 h1:4voqtT8UppT7nmKQkXV+T9K8UyQjKOn2z/ycpmJK8wg=
 github.com/btcsuite/btcd/btcutil/psbt v1.1.8/go.mod h1:kA6FLH/JfUx++j9pYU0pyu+Z8XGBQuuTmuKYUf6q7/U=
 github.com/btcsuite/btcd/chaincfg/chainhash v1.0.0/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
 github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
-github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2 h1:KdUfX2zKommPRa+PD0sWZUyXe9w277ABlgELO7H04IM=
-github.com/btcsuite/btcd/chaincfg/chainhash v1.0.2/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
+github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0 h1:59Kx4K6lzOW5w6nFlA0v5+lk/6sjybR934QNHSJZPTQ=
+github.com/btcsuite/btcd/chaincfg/chainhash v1.1.0/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
 github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f h1:bAs4lUbRJpnnkd9VhRV3jjAVU7DJVjMaK+IsvSeZvFo=
 github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
 github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=
-github.com/btcsuite/btcwallet v0.16.10-0.20231129183218-5df09dd43358 h1:lZUSo6TISHUJQxpn/AniW5gqaN1iRNS87SDWvV3AHfg=
-github.com/btcsuite/btcwallet v0.16.10-0.20231129183218-5df09dd43358/go.mod h1:WSKhOJWUmUOHKCKEzdt+jWAHFAE/t4RqVbCwL2pEdiU=
+github.com/btcsuite/btcwallet v0.16.10-0.20240127010340-16b422a2e8bf h1:eNjj5R0tKP48NQxDkuKr+C9frZsdzTAemEwu75ZDQg0=
+github.com/btcsuite/btcwallet v0.16.10-0.20240127010340-16b422a2e8bf/go.mod h1:LzcW/LYkQLgDufv6Ouw4cOIW0YsY+A60MTtc61/OZTU=
 github.com/btcsuite/btcwallet/wallet/txauthor v1.3.2 h1:etuLgGEojecsDOYTII8rYiGHjGyV5xTqsXi+ZQ715UU=
 github.com/btcsuite/btcwallet/wallet/txauthor v1.3.2/go.mod h1:Zpk/LOb2sKqwP2lmHjaZT9AdaKsHPSbNLm2Uql5IQ/0=
 github.com/btcsuite/btcwallet/wallet/txrules v1.2.0 h1:BtEN5Empw62/RVnZ0VcJaVtVlBijnLlJY+dwjAye2Bg=
@@ -307,8 +307,8 @@ github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/gorilla/css v1.0.0 h1:BQqNyPTi50JCFMTw/b67hByjMVXZRwGha6wxVGkeihY=
 github.com/gorilla/css v1.0.0/go.mod h1:Dn721qIggHpt4+EFCcTLTU/vk5ySda2ReITrtgBl60c=
-github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
-github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
+github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 h1:+9834+KizmvFV7pXQGSXQTsaWhq2GjuNUt0aUU0YBYw=
 github.com/grpc-ecosystem/go-grpc-middleware v1.3.0/go.mod h1:z0ButlSOZa5vEBq9m2m2hlwIgKw+rp3sdCBRoJY+30Y=
 github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 h1:Ovs26xHkKqVztRpIrF/92BcuyuQ/YW4NSIpoGtfXNho=
@@ -455,8 +455,8 @@ github.com/lightninglabs/protobuf-go-hex-display v1.30.0-hex-display h1:pRdza2wl
 github.com/lightninglabs/protobuf-go-hex-display v1.30.0-hex-display/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 github.com/lightningnetwork/lightning-onion v1.2.1-0.20230823005744-06182b1d7d2f h1:Pua7+5TcFEJXIIZ1I2YAUapmbcttmLj4TTi786bIi3s=
 github.com/lightningnetwork/lightning-onion v1.2.1-0.20230823005744-06182b1d7d2f/go.mod h1:c0kvRShutpj3l6B9WtTsNTBUtjSmjZXbJd9ZBRQOSKI=
-github.com/lightningnetwork/lnd v0.17.3-beta.rc1 h1:hdYy8mcdfVOtSNQ/NPOhl+YvMdYc6IPXrdT9Ey/cvMk=
-github.com/lightningnetwork/lnd v0.17.3-beta.rc1/go.mod h1:zKLs8Rb+jhXML7R9juPPNm6rjnINJ7Ry3haoM6jQeWo=
+github.com/lightningnetwork/lnd v0.17.4-beta.rc1 h1:z2rb3MlSvwLMgjRl/IEMCmWCBZeFeM6cJtMxBlrgX1E=
+github.com/lightningnetwork/lnd v0.17.4-beta.rc1/go.mod h1:S5hugoB/FWyF9Up9sjEnOsA/ohmhXzIqRHHMLlrtyFk=
 github.com/lightningnetwork/lnd/clock v1.0.1/go.mod h1:KnQudQ6w0IAMZi1SgvecLZQZ43ra2vpDNj7H/aasemg=
 github.com/lightningnetwork/lnd/clock v1.1.1 h1:OfR3/zcJd2RhH0RU+zX/77c0ZiOnIMsDIBjgjWdZgA0=
 github.com/lightningnetwork/lnd/clock v1.1.1/go.mod h1:mGnAhPyjYZQJmebS7aevElXKTFDuO+uNFFfMXK1W8xQ=

internal/lnd/util.go

@@ -1,8 +1,16 @@
 package lnd
 
-import "fmt"
+import (
+	"fmt"
+	"strings"
+)
 
 func satsToShortString(sats float64) string {
 	millionSats := (sats / 1000000.0)
 	return fmt.Sprintf("%.1fm", millionSats)
-}
+}
+
+func SantizeBoltInvoice(invoice string) string {
+	cleanedInvoice := strings.Replace(invoice, "lightning:", "", -1)
+	return cleanedInvoice
+}

internal/lnd/util_test.go

@@ -0,0 +1,16 @@
+package lnd
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSantizeBoltInvoice(t *testing.T) {
+	invoiceStr := "lightning:lnbc10u1pju83nypp5ffwgtf2hheeyxt69u5pxku8ww83nsvy5n8jenl239cx8xq2fq3nqdp8fe5kxetgv9eksgzyv4cx7umfwssyjmnkda5kxegcqzysxqr8pqsp5z6dfwhvzkjwh8tzggnh82zhjk2mx3eweysaj93eaeuxs2mevz55q9qyyssqtpv4pq5enzaqv5d7yhftzpzwtxlmtq7wacv5jz4she9lphe99fazqehzff73k7hh64stmnsk4dvhcldazxpjaz9l6fwu5al0w9nq5wspvncy4m"
+
+	cleanedInvoiceStr := SantizeBoltInvoice(invoiceStr)
+
+	assert.True(t, strings.HasPrefix(cleanedInvoiceStr, "lnbc10"))
+}

internal/tui/dashboard.go

@@ -257,17 +257,20 @@ func (m *DashboardModel) handleFormClick(component dashboardComponent) (tea.Mode
 	switch component {
 	case paymentTools:
 		if m.forms[0].GetString("payments") == OPTION_PAYMENT_RECEIVE {
-			m.forms[0] = m.generatePaymentToolsForm()
 			i = newInvoiceModel(m.ctx, &m.base, m.lndService, StateNone)
+		} else {
+			i = newPayInvoiceModel(m.lndService, &m.base)
 		}
+		m.forms[0] = m.generatePaymentToolsForm()
 	case messageTools:
 		if m.forms[2].GetString("messages") == OPTION_MESSAGE_SIGN {
-			m.forms[2] = m.generateMessageToolsForm()
+
 			i = newSignMessageModel(m.lndService, &m.base)
 		} else {
-			m.forms[2] = m.generateMessageToolsForm()
+
 			i = newVerifyMessageModel(m.lndService, &m.base)
 		}
+		m.forms[2] = m.generateMessageToolsForm()
 	}
 
 	return i.Update(windowSizeMsg)

internal/tui/pay_invoice.go

@@ -0,0 +1,214 @@
+package tui
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/ardevd/flash/internal/lnd"
+	"github.com/btcsuite/btcd/btcutil"
+	"github.com/charmbracelet/bubbles/key"
+	"github.com/charmbracelet/bubbles/spinner"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/huh"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/lightninglabs/lndclient"
+	"github.com/lightningnetwork/lnd/routing/route"
+)
+
+// Model
+type PayInvoiceModel struct {
+	styles       *Styles
+	lndService   *lndclient.GrpcLndServices
+	ctx          context.Context
+	base         *BaseModel
+	keys         keyMap
+	form         *huh.Form
+	invoiceState PaymentState
+	spinner      spinner.Model
+}
+
+// PaymentState indicates the state of a Bolt 11 invoice payment
+type PaymentState int
+
+const (
+	// PaymentStateNone is when the invoice is yet to be generated
+	PaymentStateNone PaymentState = iota
+
+	// PaymentStateDecoded is when the invoice has been and parsed.
+	PaymentStateDecoded
+
+	// PaymentStateSending is when the invoice payment is sending
+	PaymentStateSending
+
+	// PaymentStateSettled is when the invoice has settled
+	PaymentStateSettled
+)
+
+// Value container
+var invoiceString string
+
+// Instantiate model
+func newPayInvoiceModel(service *lndclient.GrpcLndServices, base *BaseModel) *PayInvoiceModel {
+	m := PayInvoiceModel{lndService: service, base: base, ctx: context.Background(), keys: Keymap}
+	m.styles = GetDefaultStyles()
+	m.base.pushView(&m)
+	m.form = getInvoicePaymentForm()
+	m.invoiceState = PaymentStateNone
+	s := spinner.New()
+	s.Spinner = spinner.Dot
+	s.Style = lipgloss.NewStyle().Foreground(lipgloss.Color("205"))
+	m.spinner = s
+
+	return &m
+}
+
+// Model update logic
+func (m *PayInvoiceModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	// Handle base model events
+	model, cmd := m.base.Update(msg)
+	if model != nil {
+		return model, cmd
+	}
+
+	var cmds []tea.Cmd
+	switch msg := msg.(type) {
+	case tea.WindowSizeMsg:
+		windowSizeMsg = msg
+
+	case tea.KeyMsg:
+		switch {
+		// Enter will pay the invoice is model is in appropriate state
+		case key.Matches(msg, Keymap.Enter):
+			if m.form.State == huh.StateCompleted && m.invoiceState == PaymentStateNone {
+				m.invoiceState = PaymentStateSending
+				return m, paymentCreatedMsg
+			}
+		}
+	// Payment has been decoded and issued.
+	case paymentCreated:
+		cmds = append(cmds, m.payInvoice)
+	// Payment failed
+	case paymentError:
+		m.invoiceState = PaymentStateNone
+	// Payment has been settled
+	case paymentSettled:
+		m.invoiceState = PaymentStateSettled
+	}
+
+	// Tick the spinner
+	m.spinner, cmd = m.spinner.Update(msg)
+	cmds = append(cmds, cmd)
+
+	// Process the invoice form
+	if m.form != nil {
+		form, cmd := m.form.Update(msg)
+		if f, ok := form.(*huh.Form); ok {
+			m.form = f
+			cmds = append(cmds, cmd)
+		}
+	}
+
+	return m, tea.Batch(cmds...)
+}
+
+// Get the invoice payment form
+func getInvoicePaymentForm() *huh.Form {
+	form := huh.NewForm(
+		huh.NewGroup(huh.NewNote().
+			Title("Pay Invoice").
+			Description("Pay the provided invoice"),
+			huh.NewInput().
+				Title("BOLT11 Invoice").
+				Prompt(">").
+				Value(&invoiceString)))
+
+	form.NextField()
+	return form
+}
+
+// Init
+func (m PayInvoiceModel) Init() tea.Cmd {
+	return m.spinner.Tick
+}
+
+// Model view logic
+func (m PayInvoiceModel) View() string {
+	s := m.styles
+	v := strings.TrimSuffix(m.form.View(), "\n")
+	form := lipgloss.DefaultRenderer().NewStyle().Margin(1, 0).Render(v)
+	if m.invoiceState == PaymentStateSending {
+		return lipgloss.JoinVertical(lipgloss.Left, s.BorderedStyle.Render(m.getPaymentPendingView()))
+	} else if m.invoiceState == PaymentStateSettled {
+		return lipgloss.JoinVertical(lipgloss.Left, s.BorderedStyle.Render(m.getPaymentSettledView()))
+	} else if m.form.State == huh.StateCompleted {
+		return lipgloss.JoinVertical(lipgloss.Left, s.BorderedStyle.Render(fmt.Sprintf("\n%s\n", s.HeaderText.Render("Pay Invoice?"))+
+			"\n"+m.decodeInvoice()))
+	}
+	return lipgloss.JoinVertical(lipgloss.Left, form)
+}
+
+// Get the Payment pending view
+func (m PayInvoiceModel) getPaymentPendingView() string {
+
+	return m.styles.HeaderText.Render("Invoice in flight") + "\n\n" +
+		fmt.Sprintf("\n\n   %s Sending payment\n\n", m.spinner.View())
+}
+
+// Get the Payment settled view
+func (m PayInvoiceModel) getPaymentSettledView() string {
+	s := m.styles
+	return s.HeaderText.Render("Invoice settled") + "\n\n" +
+		s.PositiveString("The invoice was successfully settled") + "\n" +
+		"Press Esc to return"
+}
+
+// Get node name for a given public key
+func (m PayInvoiceModel) getNodeName(pubkey route.Vertex) string {
+	nodeInfo, err := m.lndService.Client.GetNodeInfo(m.ctx, pubkey, false)
+	if err != nil {
+		return ""
+	}
+
+	return nodeInfo.Alias
+}
+
+// Decode an invoice string
+func (m PayInvoiceModel) decodeInvoice() string {
+	// Decode the invoice string
+	invoiceString = lnd.SantizeBoltInvoice(invoiceString)
+	decodedInvoice, err := m.lndService.Client.DecodePaymentRequest(m.ctx, invoiceString)
+	if err != nil {
+		return "Error decoding invoice: " + err.Error()
+	}
+
+	amountInSats := decodedInvoice.Value.ToSatoshis()
+
+	s := m.styles
+	return s.Keyword("Amount: ") + amountInSats.String() + "\n" +
+		s.Keyword("To: ") + decodedInvoice.Destination.String() + "\n" +
+		s.Keyword("Node: ") + m.getNodeName(decodedInvoice.Destination) + "\n" +
+		s.Keyword("Description: ") + decodedInvoice.Description + "\n\n" +
+		s.SubKeyword("Press Enter to accept, Esc to cancel")
+}
+
+// Pay the invoice
+func (m *PayInvoiceModel) payInvoice() tea.Msg {
+	result := m.lndService.Client.PayInvoice(m.ctx, invoiceString, btcutil.Amount(10), nil)
+	defer close(result)
+	completion := make(chan tea.Msg)
+
+	defer close(completion)
+	go func() {
+		for update := range result {
+			if update.Err != nil {
+				fmt.Println(update.Err.Error())
+				completion <- paymentError{}
+			} else {
+				completion <- paymentSettled{}
+			}
+		}
+	}()
+
+	return <-completion
+}

internal/tui/tui.go

@@ -19,6 +19,7 @@ type DataLoaded lnd.NodeData
 type paymentSettled struct{}
 type paymentExpired struct{}
 type paymentCreated struct{}
+type paymentError struct{}
 
 func GetData(service *lndclient.GrpcLndServices, ctx context.Context) lnd.NodeData {
 	var nodeData lnd.NodeData