import request from 'request-promise'; import { Logger, LoggerService } from '../../utils/logger.js'; import { Common, CommonService } from '../../utils/common.js'; import { CommonSelectedNode } from '../../models/config.model.js'; let options = null; const logger: LoggerService = Logger; const common: CommonService = Common; export const getAliasForChannel = (selNode: CommonSelectedNode, channel) => { const pubkey = (channel.remote_pubkey) ? channel.remote_pubkey : (channel.remote_node_pub) ? channel.remote_node_pub : ''; options.url = selNode.ln_server_url + '/v1/graph/node/' + pubkey; return request(options).then((aliasBody) => { logger.log({ selectedNode: selNode, level: 'DEBUG', fileName: 'Channels', msg: 'Alias Received', data: aliasBody.node.alias }); channel.remote_alias = aliasBody.node.alias; return aliasBody.node.alias; }).catch((err) => { channel.remote_alias = pubkey.slice(0, 10) + '...' + pubkey.slice(-10); return pubkey; }); }; export const getAllChannels = (req, res, next) => { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Getting Channels..' }); options = common.getOptions(req); if (options.error) { return res.status(options.statusCode).json({ message: options.message, error: options.error }); } options.url = req.session.selectedNode.ln_server_url + '/v1/channels'; options.qs = req.query; let local = 0; let remote = 0; let total = 0; request(options).then((body) => { logger.log({ selectedNode: req.session.selectedNode, level: 'DEBUG', fileName: 'Channels', msg: 'Channels List Received', data: body }); if (body.channels) { return Promise.all( body.channels?.map((channel) => { local = (channel.local_balance) ? +channel.local_balance : 0; remote = (channel.remote_balance) ? +channel.remote_balance : 0; total = local + remote; channel.balancedness = (total === 0) ? 1 : (1 - Math.abs((local - remote) / total)).toFixed(3); return getAliasForChannel(req.session.selectedNode, channel); }) ).then((values) => { body.channels = common.sortDescByKey(body.channels, 'balancedness'); logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Sorted Channels List Received', data: body }); return res.status(200).json(body); }).catch((errRes) => { const err = common.handleError(errRes, 'Channels', 'Get All Channel Aliases Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); }); } else { body.channels = []; logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Empty Channels List Received' }); return res.status(200).json(body); } }).catch((errRes) => { const err = common.handleError(errRes, 'Channels', 'List Channels Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); }); }; export const getPendingChannels = (req, res, next) => { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Getting Pending Channels..' }); options = common.getOptions(req); if (options.error) { return res.status(options.statusCode).json({ message: options.message, error: options.error }); } options.url = req.session.selectedNode.ln_server_url + '/v1/channels/pending'; options.qs = req.query; request(options).then((body) => { if (!body.total_limbo_balance) { body.total_limbo_balance = 0; } const promises = []; if (body.pending_open_channels && body.pending_open_channels.length > 0) { body.pending_open_channels?.map((channel) => promises.push(getAliasForChannel(req.session.selectedNode, channel.channel))); } if (body.pending_closing_channels && body.pending_closing_channels.length > 0) { body.pending_closing_channels?.map((channel) => promises.push(getAliasForChannel(req.session.selectedNode, channel.channel))); } if (body.pending_force_closing_channels && body.pending_force_closing_channels.length > 0) { body.pending_force_closing_channels?.map((channel) => promises.push(getAliasForChannel(req.session.selectedNode, channel.channel))); } if (body.waiting_close_channels && body.waiting_close_channels.length > 0) { body.waiting_close_channels?.map((channel) => promises.push(getAliasForChannel(req.session.selectedNode, channel.channel))); } return Promise.all(promises).then((values) => { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Pending Channels List Received', data: body }); return res.status(200).json(body); }). catch((errRes) => { const err = common.handleError(errRes, 'Channels', 'Get Pending Channel Aliases Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); }); }).catch((errRes) => { const err = common.handleError(errRes, 'Channels', 'List Pending Channels Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); }); }; export const getClosedChannels = (req, res, next) => { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Getting Closed Channels..' }); options = common.getOptions(req); if (options.error) { return res.status(options.statusCode).json({ message: options.message, error: options.error }); } options.url = req.session.selectedNode.ln_server_url + '/v1/channels/closed'; options.qs = req.query; request(options).then((body) => { if (body.channels && body.channels.length > 0) { return Promise.all( body.channels?.map((channel) => { channel.close_type = (!channel.close_type) ? 'COOPERATIVE_CLOSE' : channel.close_type; return getAliasForChannel(req.session.selectedNode, channel); }) ).then((values) => { body.channels = common.sortDescByKey(body.channels, 'close_height'); logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Closed Channels List Received', data: body }); return res.status(200).json(body); }).catch((errRes) => { const err = common.handleError(errRes, 'Channels', 'Get Closed Channel Aliases Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); }); } else { body.channels = []; return res.status(200).json(body); } }).catch((errRes) => { const err = common.handleError(errRes, 'Channels', 'List Closed Channels Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); }); }; export const postChannel = (req, res, next) => { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Opening Channel..' }); options = common.getOptions(req); if (options.error) { return res.status(options.statusCode).json({ message: options.message, error: options.error }); } options.url = req.session.selectedNode.ln_server_url + '/v1/channels'; options.form = { node_pubkey_string: req.body.node_pubkey, local_funding_amount: req.body.local_funding_amount, private: req.body.private, spend_unconfirmed: req.body.spend_unconfirmed }; if (req.body.trans_type === '1') { options.form.target_conf = req.body.trans_type_value; } else if (req.body.trans_type === '2') { options.form.sat_per_byte = req.body.trans_type_value; } options.form = JSON.stringify(options.form); request.post(options).then((body) => { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Channel Opened', data: body }); res.status(201).json(body); }).catch((errRes) => { const err = common.handleError(errRes, 'Channels', 'Open Channel Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); }); }; export const postTransactions = (req, res, next) => { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Sending Payment..' }); options = common.getOptions(req); if (options.error) { return res.status(options.statusCode).json({ message: options.message, error: options.error }); } options.url = req.session.selectedNode.ln_server_url + '/v1/channels/transactions'; options.form = { payment_request: req.body.paymentReq }; if (req.body.paymentAmount) { options.form.amt = req.body.paymentAmount; } if (req.body.feeLimit) { options.form.fee_limit = req.body.feeLimit; } if (req.body.outgoingChannel) { options.form.outgoing_chan_id = req.body.outgoingChannel; } if (req.body.allowSelfPayment) { options.form.allow_self_payment = req.body.allowSelfPayment; } if (req.body.lastHopPubkey) { options.form.last_hop_pubkey = Buffer.from(req.body.lastHopPubkey, 'hex').toString('base64'); } options.form = JSON.stringify(options.form); logger.log({ selectedNode: req.session.selectedNode, level: 'DEBUG', fileName: 'Channels', msg: 'Send Payment Options', data: options.form }); request.post(options).then((body) => { if (body.payment_error) { const err = common.handleError(body.payment_error, 'Channels', 'Send Payment Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); } else { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Payment Sent', data: body }); res.status(201).json(body); } }).catch((errRes) => { const err = common.handleError(errRes, 'Channels', 'Send Payment Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); }); }; export const closeChannel = (req, res, next) => { try { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Closing Channel..' }); if (!req.session.selectedNode) { const err = common.handleError({ message: 'Session Expired after a day\'s inactivity.', statusCode: 401 }, 'Session Expired', 'Session Expiry Error', null); return res.status(err.statusCode).json({ message: err.message, error: err.error }); } options = common.getOptions(req); if (options.error) { return res.status(options.statusCode).json({ message: options.message, error: options.error }); } const channelpoint = req.params.channelPoint?.replace(':', '/'); options.url = req.session.selectedNode.ln_server_url + '/v1/channels/' + channelpoint + '?force=' + req.query.force; if (req.query.target_conf) { options.url = options.url + '&target_conf=' + req.query.target_conf; } if (req.query.sat_per_byte) { options.url = options.url + '&sat_per_byte=' + req.query.sat_per_byte; } logger.log({ selectedNode: req.session.selectedNode, level: 'DEBUG', fileName: 'Channels', msg: 'Closing Channel Options URL', data: options.url }); request.delete(options); logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Channel Close Requested' }); res.status(202).json({ message: 'Close channel request has been submitted.' }); } catch (error) { logger.log({ selectedNode: req.session.selectedNode, level: 'ERROR', fileName: 'Channels', msg: 'Close Channel Error', error: error.message }); return res.status(500).json({ message: 'Close Channel Error', error: error.message }); } }; export const postChanPolicy = (req, res, next) => { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Updating Channel Policy..' }); options = common.getOptions(req); if (options.error) { return res.status(options.statusCode).json({ message: options.message, error: options.error }); } options.url = req.session.selectedNode.ln_server_url + '/v1/chanpolicy'; if (req.body.chanPoint === 'all') { options.form = JSON.stringify({ global: true, base_fee_msat: req.body.baseFeeMsat, fee_rate: parseFloat((req.body.feeRate / 1000000).toString()), time_lock_delta: parseInt(req.body.timeLockDelta) }); } else { const breakPoint = req.body.chanPoint.indexOf(':'); const txid_str = req.body.chanPoint.substring(0, breakPoint); const output_idx = req.body.chanPoint.substring(breakPoint + 1, req.body.chanPoint.length); const optionsBody = { base_fee_msat: req.body.baseFeeMsat, fee_rate: parseFloat((req.body.feeRate / 1000000).toString()), time_lock_delta: parseInt(req.body.timeLockDelta), chan_point: { funding_txid_str: txid_str, output_index: parseInt(output_idx) } }; if (req.body.max_htlc_msat) { optionsBody['max_htlc_msat'] = req.body.max_htlc_msat; } if (req.body.min_htlc_msat) { optionsBody['min_htlc_msat'] = req.body.min_htlc_msat; optionsBody['min_htlc_msat_specified'] = true; } options.form = JSON.stringify(optionsBody); } logger.log({ selectedNode: req.session.selectedNode, level: 'DEBUG', fileName: 'Channels', msg: 'Update Channel Policy Options', data: options.form }); request.post(options).then((body) => { logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Channels', msg: 'Channel Policy Updated', data: body }); if (body.failed_updates && body.failed_updates.length && body.failed_updates[0].update_error) { const err = common.handleError({ error: body.failed_updates[0].update_error }, 'Channels', 'Update Channel Policy Error', req.session.selectedNode); return res.status(500).json({ message: err.message, error: err.error }); } res.status(201).json(body); }).catch((errRes) => { const err = common.handleError(errRes, 'Channels', 'Update Channel Policy Error', req.session.selectedNode); return res.status(err.statusCode).json({ message: err.message, error: err.error }); }); };