zap-desktop/app/lnd/methods/index.js

import channelbalance from './channelbalance'
import channels from './channels'
import connectpeer from './connectpeer'
import createinvoice from './createinvoice'
import disconnectpeer from './disconnectpeer'
import info from './info'
import invoice from './invoice'
import invoices from './invoices'
import openchannel from './openchannel'
import payinvoice from './payinvoice'
import payments from './payments'
import peers from './peers'
import pendingchannels from './pendingchannels'
import walletbalance from './walletbalance'

export default function (lnd, event, msg, data) {
  switch (msg) {
    case 'info':
      info(lnd)
        .then(infoData => event.sender.send('receiveInfo', infoData))
        .catch(error => console.log('info error: ', error))
      break
    case 'peers':
    // Data looks like { peers: [] }
      peers(lnd)
        .then(peersData => event.sender.send('receivePeers', peersData))
        .catch(error => console.log('peers error: ', error))
      break
    case 'channels':
    // Data looks like 
    // [ { channels: [] }, { total_limbo_balance: 0, pending_open_channels: [], pending_closing_channels: [], pending_force_closing_channels: [] } ]
      Promise.all([channels, pendingchannels].map(func => func(lnd)))
        .then(channelsData =>
          event.sender.send('receiveChannels', { channels: channelsData[0].channels, pendingChannels: channelsData[1] })
        )
        .catch(error => console.log('channels error: ', error))
      break
    case 'payments':
    // Data looks like { payments: [] }
      payments(lnd)
        .then(paymentsData => event.sender.send('receivePayments', paymentsData))
        .catch(error => console.log('payments error: ', error))
      break
    case 'invoices':
    // Data looks like { invoices: [] }
      invoices(lnd)
        .then(invoicesData => event.sender.send('receiveInvoices', invoicesData))
        .catch(error => console.log('invoices error: ', error))
      break
    case 'invoice':
    // Data looks like { invoices: [] }
      invoice(data.payreq)
        .then(invoiceData => event.sender.send('receiveInvoice', invoiceData))
        .catch(error => console.log('invoice error: ', error))
      break
    case 'balance':
    // Balance looks like [ { balance: '129477456' }, { balance: '243914' } ]
      Promise.all([walletbalance, channelbalance].map(func => func(lnd)))
        .then(balance => event.sender.send('receiveBalance', { walletBalance: balance[0].balance, channelBalance: balance[1].balance }))
        .catch(error => console.log('balance error: ', error))
      break
    case 'createInvoice':
    // Invoice looks like { r_hash: Buffer, payment_request: '' }
    // { memo, value } = data
      createinvoice(lnd, data)
        .then(newinvoice =>
          event.sender.send(
            'createdInvoice',
            Object.assign(newinvoice, { memo: data.memo, value: data.value, r_hash: new Buffer(newinvoice.r_hash, 'hex').toString('hex') })
          )
        )
        .catch(error => console.log('createInvoice error: ', error))
      break
    case 'sendPayment':
    // Payment looks like { payment_preimage: Buffer, payment_route: Object }
    // { paymentRequest } = data
      payinvoice(lnd, data)
        .then(({ payment_route }) => event.sender.send('paymentSuccessful', Object.assign(data, { payment_route })))
        .catch(error => console.log('payinvoice error: ', error))
      break
    case 'openChannel':
    // Response is empty. Streaming updates on channel status and updates
    // { pubkey, localamt, pushamt } = data
      openchannel(lnd, event, data)
        .then((channel) => {
          console.log('CHANNEL: ', channel)
          event.sender.send('channelSuccessful', { channel })
        })
        .catch(error => console.log('openChannel error: ', error))
      break
    case 'connectPeer':
    // Returns a peer_id. Pass the pubkey, host and peer_id so we can add a new peer to the list
    // { pubkey, host } = data
      connectpeer(lnd, data)
        .then(({ peer_id }) => {
          console.log('peer_id: ', peer_id)
          event.sender.send('connectSuccess', { pub_key: data.pubkey, address: data.host, peer_id })
        })
        .catch(error => console.log('connectPeer error: ', error))
      break
    case 'disconnectPeer':
    // Empty response. Pass back pubkey on success to remove it from the peers list
    // { pubkey } = data
      disconnectpeer(lnd, data)
        .then(() => {
          console.log('pubkey: ', data.pubkey)
          event.sender.send('disconnectSuccess', { pubkey: data.pubkey })
        })
        .catch(error => console.log('disconnectPeer error: ', error))
      break
    default:
  }
}