178fcf4ce2
- Updated database module so that other modules can use it directly by require() - use path module where-ever needed - Fixed: public directory not viewed in browser when opening the link
259 lines
12 KiB
JavaScript
259 lines
12 KiB
JavaScript
'use strict';
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const DB = require("../database");
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const eCode = require('../../docs/scripts/floExchangeAPI').errorCode;
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const pCode = require('../../docs/scripts/floExchangeAPI').processCode;
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const getRate = require('./conversion').getRate;
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const blockchainBond = (function () {
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const productStr = "Product: RanchiMall Bitcoin Bond";
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const magnitude = m => {
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switch (m) {
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case "thousand": return 1000;
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case "lakh": case "lakhs": return 100000;
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case "million": return 1000000;
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case "crore": case "crores": return 10000000;
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default: return null;
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}
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}
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const parseNumber = (str) => {
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let n = 0,
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g = 0;
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str.toLowerCase().replace(/,/g, '').split(" ").forEach(s => {
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if (!isNaN(s))
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g = parseFloat(s);
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else {
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let m = magnitude(s);
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if (m !== null) {
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n += m * g;
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g = 0;
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}
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}
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});
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return n + g;
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}
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const parsePeriod = (str) => {
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let P = '', n = 0;
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str.toLowerCase().replace(/,/g, '').split(" ").forEach(s => {
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if (!isNaN(s))
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n = parseFloat(s);
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else switch (s) {
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case "year(s)": case "year": case "years": P += (n + 'Y'); n = 0; break;
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case "month(s)": case "month": case "months": P += (n + 'M'); n = 0; break;
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case "day(s)": case "day": case "days": P += (n + 'D'); n = 0; break;
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}
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});
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return P;
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}
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const dateFormat = (date = null) => {
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let d = (date ? new Date(date) : new Date()).toDateString();
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return [d.substring(8, 10), d.substring(4, 7), d.substring(11, 15)].join(" ");
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}
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const yearDiff = (d1 = null, d2 = null) => {
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d1 = d1 ? new Date(d1) : new Date();
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d2 = d2 ? new Date(d2) : new Date();
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let y = d1.getYear() - d2.getYear(),
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m = d1.getMonth() - d2.getMonth(),
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d = d1.getDate() - d2.getDate()
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return y + m / 12 + d / 365;
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}
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const dateAdder = function (start_date, duration) {
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let date = new Date(start_date);
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let y = parseInt(duration.match(/\d+Y/)),
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m = parseInt(duration.match(/\d+M/)),
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d = parseInt(duration.match(/\d+D/));
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if (!isNaN(y))
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date.setFullYear(date.getFullYear() + y);
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if (!isNaN(m))
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date.setMonth(date.getMonth() + m);
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if (!isNaN(d))
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date.setDate(date.getDate() + d);
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return date;
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}
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function calcNetValue(BTC_base, BTC_net, startDate, minIpa, maxPeriod, cut, amount, USD_base, USD_net) {
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let gain, duration, interest, net;
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gain = (BTC_net - BTC_base) / BTC_base;
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duration = yearDiff(Math.min(Date.now(), dateAdder(startDate, maxPeriod).getTime()), startDate);
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interest = Math.max(cut * gain, minIpa * duration);
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net = amount / USD_base;
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net += net * interest;
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return net * USD_net;
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}
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function stringify_main(BTC_base, start_date, guaranteed_interest, guarantee_period, gain_cut, amount, USD_base, lockin_period, floID) {
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return [
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`${productStr}`,
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`Base value: ${BTC_base} USD`,
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`Date of bond start: ${dateFormat(start_date)}`,
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`Guaranteed interest: ${guaranteed_interest}% per annum simple for ${guarantee_period}`,
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`Bond value: guaranteed interest or ${gain_cut}% of the gains whichever is higher`,
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`Amount invested: Rs ${amount}`,
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`USD INR rate at start: ${USD_base}`,
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`Lockin period: ${lockin_period}`,
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`FLO ID of Bond Holder: ${floID}`
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].join("|");
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}
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function parse_main(data) {
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//Data (add bond) sent by admin
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let details = {};
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data.split("|").forEach(d => {
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d = d.split(': ');
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switch (d[0].toLowerCase()) {
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case "base value":
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details["BTC_base"] = parseNumber(d[1].slice(0, -4)); break;
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case "date of bond start":
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details["startDate"] = new Date(d[1]); break;
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case "guaranteed interest":
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details["minIpa"] = parseFloat(d[1].match(/\d+%/)) / 100;
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details["maxPeriod"] = parsePeriod(d[1].match(/for .+/).toString()); break;
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case "bond value":
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details["cut"] = parseFloat(d[1].match(/\d+%/)) / 100; break;
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case "amount invested":
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details["amount"] = parseNumber(d[1].substring(3)); break;
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case "usd inr rate at start":
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details["USD_base"] = parseFloat(d[1]); break;
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case "lockin period":
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details["lockinPeriod"] = parsePeriod(d[1]); break;
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case "flo id of bond holder":
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details["floID"] = d[1]; break;
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}
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});
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return details;
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}
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function stringify_end(bond_id, end_date, BTC_net, USD_net, amount, ref_sign, payment_ref) {
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return [
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`${productStr}`,
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`Bond: ${bond_id}`,
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`End value: ${BTC_net} USD`,
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`Date of bond end: ${dateFormat(end_date)}`,
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`USD INR rate at end: ${USD_net}`,
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`Amount withdrawn: Rs ${amount} via ${payment_ref}`,
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`Reference: ${ref_sign}`
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].join("|");
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}
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function parse_end(data) {
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//Data (end bond) send by market nodes
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let details = {};
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data.split("|").forEach(d => {
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d = d.split(': ');
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switch (d[0].toLowerCase()) {
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case "bond":
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details["bondID"] = d[1]; break;
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case "end value":
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details["BTC_net"] = parseNumber(d[1].slice(0, -4)); break;
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case "date of bond end":
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details["endDate"] = new Date(d[1]); break;
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case "amount withdrawn":
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details["amountFinal"] = parseNumber(d[1].match(/\d.+ via/).toString());
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details["payment_refRef"] = d[1].match(/via .+/).toString().substring(4); break;
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case "usd inr rate at end":
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details["USD_net"] = parseFloat(d[1]); break;
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case "reference":
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details["refSign"] = d[1]; break;
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}
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});
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return details;
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}
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return {
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productStr,
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dateAdder,
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dateFormat,
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calcNetValue,
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parse: {
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main: parse_main,
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end: parse_end
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},
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stringify: {
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main: stringify_main,
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end: stringify_end
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}
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}
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})();
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blockchainBond.config = {
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adminID: "FBBstZ2GretgQqDP55yt8iVd4KNZkdvEzH",
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application: "BlockchainBonds"
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}
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function refreshBlockchainData(nodeList = []) {
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return new Promise((resolve, reject) => {
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DB.query("SELECT num FROM LastTx WHERE floID=?", [blockchainBond.config.adminID]).then(result => {
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let lastTx = result.length ? result[0].num : 0;
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floBlockchainAPI.readData(blockchainBond.config.adminID, {
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ignoreOld: lastTx,
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senders: nodeList.concat(blockchainBond.config.adminID), //sentOnly: true,
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tx: true,
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filter: d => d.startsWith(blockchainBond.productStr)
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}).then(result => {
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let promises = [];
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result.data.reverse().forEach(d => {
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let bond = d.senders.has(blockchainBond.config.adminID) ? blockchainBond.parse.main(d.data) : null;
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if (bond && bond.amount)
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promises.push(DB.query("INSERT INTO BlockchainBonds(bond_id, floID, amount_in, begin_date, btc_base, usd_base, gain_cut, min_ipa, max_period, lockin_period) VALUES ? ON DUPLICATE KEY UPDATE bond_id=bond_id",
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[[[d.txid, bond.floID, bond.amount, bond.startDate, bond.BTC_base, bond.USD_base, bond.cut, bond.minIpa, bond.maxPeriod, bond.lockinPeriod]]]));
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else {
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let details = blockchainBond.parse.end(d.data);
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if (details.bondID && details.amountFinal)
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promises.push(DB.query("UPDATE BlockchainBonds SET close_id=?, amount_out=? WHERE bond_id=?", [d.txid, details.amountFinal, details.bondID]));
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}
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});
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Promise.allSettled(promises).then(results => {
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//console.debug(results.filter(r => r.status === "rejected"));
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if (results.reduce((a, r) => r.status === "rejected" ? ++a : a, 0))
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reject("Some bond data might not have been saved in database correctly");
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else
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DB.query("INSERT INTO LastTx (floID, num) VALUE (?) ON DUPLICATE KEY UPDATE num=?", [[blockchainBond.config.adminID, result.totalTxs], result.totalTxs])
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.then(_ => resolve(result.totalTxs))
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.catch(error => reject(error));
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})
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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})
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}
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function closeBond(bond_id, floID, ref) {
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return new Promise((resolve, reject) => {
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DB.query("SELECT r_status, close_id FROM CloseBondTransact WHERE bond_id=?", [bond_id]).then(result => {
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if (result.length)
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return reject(INVALID(eCode.DUPLICATE_ENTRY, result[0].r_status == pCode.STATUS_SUCCESS ? `Bond already closed (${result[0].close_id})` : `Bond closing already in process`));
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DB.query("SELECT * FROM BlockchainBonds WHERE bond_id=?", [bond_id]).then(result => {
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if (!result.length)
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return reject(INVALID(eCode.NOT_FOUND, 'Bond not found'));
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let bond = result[0];
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if (bond.floID !== floID)
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return reject(INVALID(eCode.NOT_OWNER, 'Bond doesnot belong to the user'));
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if (bond.close_id)
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return reject(INVALID(eCode.DUPLICATE_ENTRY, `Bond already closed (${bond.close_id})`));
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if (Date.now() < blockchainBond.dateAdder(bond.begin_date, bond.lockin_period).getTime())
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return reject(INVALID(eCode.INSUFFICIENT_PERIOD, 'Bond still in lock-in period'));
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getRate.BTC_USD().then(btc_rate => {
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getRate.USD_INR().then(usd_rate => {
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let end_date = new Date(),
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net_value = blockchainBond.calcNetValue(bond.btc_base, btc_rate, bond.begin_date, bond.min_ipa, bond.max_period, bond.gain_cut, bond.amount_in, bond.usd_base, usd_rate);
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DB.query("INSERT INTO CloseBondTransact(bond_id, floID, amount, end_date, btc_net, usd_net, ref_sign, r_status) VALUE (?)", [[bond_id, floID, net_value, end_date, btc_rate, usd_rate, ref, pCode.STATUS_PENDING]])
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.then(result => resolve({ "USD_net": usd_rate, "BTC_net": btc_rate, "amount_out": net_value, "end_date": end_date }))
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.catch(error => reject(error))
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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}).catch(error => reject(error))
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})
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}
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module.exports = {
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refresh(nodeList) {
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refreshBlockchainData(nodeList)
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.then(result => console.debug("Refreshed Blockchain-bonds data"))
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.catch(error => console.error(error));
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},
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util: blockchainBond,
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closeBond
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} |