RTL/backend/controllers/lnd/switch.js

import request from 'request-promise';
import { Logger } from '../../utils/logger.js';
import { Common } from '../../utils/common.js';
let options = null;
const logger = Logger;
const common = Common;
const responseData = { switch: { forwarding_events: [], last_offset_index: 0 }, fees: { forwarding_events: [], last_offset_index: 0 } };
const num_max_events = 100;
export const forwardingHistory = (req, res, next) => {
    getAllForwardingEvents(req, req.body.start_time, req.body.end_time, 0, 'switch', (eventsResponse) => {
        if (eventsResponse.error) {
            res.status(eventsResponse.error.statusCode).json(eventsResponse);
        }
        else {
            res.status(201).json(eventsResponse);
        }
    });
};
export const getAllForwardingEvents = (req, start, end, offset, caller, callback) => {
    logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Switch', msg: 'Getting Forwarding Events..' });
    if (offset === 0) {
        responseData[caller] = { forwarding_events: [], last_offset_index: 0 };
    }
    if (!req.session.selectedNode) {
        const err = common.handleError({ message: 'Session Expired after a day\'s inactivity.', statusCode: 401 }, 'Balance', 'Get Balance Error', req.session.selectedNode);
        return callback({ message: err.message, error: err.error, statusCode: err.statusCode });
    }
    options = common.getOptions(req);
    options.url = req.session.selectedNode.ln_server_url + '/v1/switch';
    options.form = {};
    if (start) {
        options.form.start_time = start;
    }
    if (end) {
        options.form.end_time = end;
    }
    options.form.num_max_events = num_max_events;
    options.form.index_offset = offset;
    options.form = JSON.stringify(options.form);
    logger.log({ selectedNode: req.session.selectedNode, level: 'DEBUG', fileName: 'Switch', msg: 'Forwarding Events Params', data: options.form });
    return request.post(options).then((body) => {
        logger.log({ selectedNode: req.session.selectedNode, level: 'INFO', fileName: 'Switch', msg: 'Forwarding Events Received', data: body });
        if (body.forwarding_events) {
            responseData[caller].forwarding_events.push(...body.forwarding_events);
            responseData[caller].last_offset_index = body.last_offset_index ? body.last_offset_index : 0;
        }
        if (!body.last_offset_index || body.last_offset_index < offset + num_max_events) {
            responseData[caller].last_offset_index = body.last_offset_index ? body.last_offset_index : 0;
            return callback(responseData[caller]);
        }
        else {
            return getAllForwardingEvents(req, start, end, offset + num_max_events, caller, callback);
        }
    }).catch((errRes) => {
        const err = common.handleError(errRes, 'Switch', 'Get All Forwarding Events Error', req.session.selectedNode);
        return callback({ message: err.message, error: err.error, statusCode: err.statusCode });
    });
};