Class LNbitsPaymentsProcessor

src/payments-processors/lnbits-payment-processor.ts:43–146

}

export class LNbitsPaymentsProcessor implements IPaymentsProcessor {
  public constructor(
    private httpClient: AxiosInstance,
    private settings: Factory<Settings>,
  ) {}

  public async getInvoice(invoiceId: string): Promise<GetInvoiceResponse> {
    logger('get invoice: %s', invoiceId)
    try {
      const response = await this.httpClient.get(`/api/v1/payments/${invoiceId}`, {
        maxRedirects: 1,
      })
      const invoice = new LNbitsInvoice()
      const data = response.data
      invoice.id = data.details.payment_hash
      invoice.pubkey = data.details.extra.internalId
      invoice.bolt11 = data.details.bolt11
      invoice.amountRequested = BigInt(Math.floor(data.details.amount / 1000))
      if (data.paid) {
        invoice.amountPaid = BigInt(Math.floor(data.details.amount / 1000))
      }
      invoice.unit = InvoiceUnit.SATS
      invoice.expiresAt = new Date(data.details.expiry * 1000)
      if (data.paid) {
        invoice.status = InvoiceStatus.COMPLETED
      } else if (isExpiredInvoice(invoice)) {
        invoice.status = InvoiceStatus.EXPIRED
      } else {
        invoice.status = InvoiceStatus.PENDING
      }
      invoice.description = data.details.memo
      invoice.confirmedAt = data.paid ? new Date(data.details.time * 1000) : null
      invoice.createdAt = new Date(data.details.time * 1000)
      invoice.updatedAt = new Date()
      return invoice
    } catch (error) {
      logger.error(`Unable to get invoice ${invoiceId}. Reason:`, error)

      throw error
    }
  }

  public async createInvoice(request: CreateInvoiceRequest): Promise<CreateInvoiceResponse> {
    logger('create invoice: %o', request)
    const { amount: amountMsats, description, requestId: internalId } = request

    const callbackURL = new URL(this.settings().paymentsProcessors?.lnbits?.callbackBaseURL)
    const hmacExpiry = (Date.now() + 1 * 24 * 60 * 60 * 1000).toString()
    callbackURL.searchParams.set(
      'hmac',
      hmacExpiry + ':' + hmacSha256(deriveFromSecret('lnbits-callback-hmac-key'), hmacExpiry).toString('hex'),
    )

    const body = {
      amount: Number(amountMsats / 1000n),
      memo: description,
      extra: {
        internalId,