generateInvoice.ts•5.79 kB
import { Tool, ToolResult } from '../types/tool.js';
import { LightningService } from '../services/lightningService.js';
const lightningService = new LightningService();
export const generateInvoiceTool: Tool = {
name: 'ldk_generate_invoice',
description: 'Generate a Lightning invoice with real payment hash for testing',
inputSchema: {
type: 'object',
properties: {
amountSats: {
type: 'number',
description: 'Amount in satoshis',
minimum: 1
},
description: {
type: 'string',
description: 'Invoice description'
},
expirySeconds: {
type: 'number',
description: 'Invoice expiry time in seconds (default: 3600)',
default: 3600
}
},
required: ['amountSats']
},
execute: async (args: any): Promise<ToolResult> => {
try {
const amountMsat = args.amountSats * 1000;
const invoice = await lightningService.generateInvoice(
amountMsat,
args.description,
args.expirySeconds || 3600
);
return {
content: [{
type: 'text',
text: JSON.stringify({
success: true,
invoice: invoice.bolt11,
paymentHash: invoice.paymentHash,
amountSats: args.amountSats,
expiryTime: invoice.expiryTime,
description: invoice.description,
swiftExample: `
// Swift code to generate and display Lightning invoice using LDK
import SwiftUI
import LightningDevKit
import CoreImage.CIFilterBuiltins
class InvoiceGenerator {
let channelManager: Bindings.ChannelManager
let logger: Bindings.Logger
let keys: Bindings.KeysManager
init(channelManager: Bindings.ChannelManager, logger: Bindings.Logger, keys: Bindings.KeysManager) {
self.channelManager = channelManager
self.logger = logger
self.keys = keys
}
func createInvoice(amountMsat: UInt64?, description: String, expirySecs: UInt32 = 3600) -> Result<Bindings.Bolt11Invoice, Error> {
let invoiceParams = Bindings.InvoiceBuilder.newInvoiceBuilder()
if let amount = amountMsat {
invoiceParams.amountMsat(amount)
}
invoiceParams.description(description.asLdkStr())
invoiceParams.expiryTime(expirySecs)
do {
let invoice = try invoiceParams.build()
return .success(invoice)
} catch {
return .failure(error)
}
}
}
struct InvoiceView: View {
let invoice = "${invoice.bolt11}"
let amountSats = ${args.amountSats}
@State private var isCopied = false
var body: some View {
VStack(spacing: 20) {
Text("Lightning Invoice")
.font(.title)
// QR Code
Image(uiImage: generateQRCode(from: invoice))
.interpolation(.none)
.resizable()
.scaledToFit()
.frame(width: 250, height: 250)
.overlay(
RoundedRectangle(cornerRadius: 16)
.stroke(Color.secondary.opacity(0.3), lineWidth: 1)
)
// Amount
VStack(spacing: 4) {
Text("\\(amountSats)")
.font(.system(size: 36, weight: .bold, design: .rounded))
Text("sats")
.font(.subheadline)
.foregroundColor(.secondary)
}
// Invoice details
Text("${args.description || 'Lightning Payment'}")
.font(.subheadline)
.foregroundColor(.secondary)
.multilineTextAlignment(.center)
// Copy button with feedback
Button(action: {
UIPasteboard.general.string = invoice
withAnimation(.easeInOut(duration: 0.2)) {
isCopied = true
}
DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
withAnimation(.easeInOut(duration: 0.2)) {
isCopied = false
}
}
}) {
Label(
isCopied ? "Copied!" : "Copy Invoice",
systemImage: isCopied ? "checkmark.circle.fill" : "doc.on.doc"
)
.frame(minWidth: 150)
}
.buttonStyle(.borderedProminent)
.tint(isCopied ? .green : .accentColor)
// Share button
ShareLink(item: invoice) {
Label("Share", systemImage: "square.and.arrow.up")
}
.buttonStyle(.bordered)
}
.padding()
}
func generateQRCode(from string: String) -> UIImage {
let context = CIContext()
let filter = CIFilter.qrCodeGenerator()
filter.message = Data(string.utf8)
if let outputImage = filter.outputImage {
let transform = CGAffineTransform(scaleX: 10, y: 10)
let scaledImage = outputImage.transformed(by: transform)
if let cgImage = context.createCGImage(scaledImage, from: scaledImage.extent) {
return UIImage(cgImage: cgImage)
}
}
return UIImage(systemName: "xmark.circle") ?? UIImage()
}
}`.trim()
}, null, 2)
}]
};
} catch (error) {
return {
content: [{
type: 'text',
text: JSON.stringify({
success: false,
error: error instanceof Error ? error.message : 'Unknown error'
}, null, 2)
}],
isError: true
};
}
}
};