218 lines
8.4 KiB
JavaScript
218 lines
8.4 KiB
JavaScript
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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function refreshBlockchainData() {
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return new Promise((resolve, reject) => {
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compactIDB.readData("appendix", "lastTx" + floGlobals.adminID).then(lastTx => {
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var query_options = { tx: true, filter: d => d.startsWith(blockchainBond.productStr) };
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query_options.senders = floExchangeAPI.nodeList.concat(floGlobals.adminID); //sentOnly: true,
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if (typeof lastTx == 'number') //lastTx is tx count (*backward support)
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query_options.ignoreOld = lastTx;
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else if (typeof lastTx == 'string') //lastTx is txid of last tx
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query_options.after = lastTx;
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floBlockchainAPI.readData(floGlobals.adminID, query_options).then(result => {
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result.items.reverse().forEach(d => {
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if (d.senders.has(floGlobals.adminID) && /bond start/i.test(d.data))
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compactIDB.addData('bonds', d.data, d.txid);
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else
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compactIDB.addData('closings', d.data, d.txid);
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});
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compactIDB.writeData('appendix', result.lastItem, "lastTx" + floGlobals.adminID);
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resolve(true);
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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 getCurrentRates() {
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let fetchData = api => new Promise((resolve, reject) => {
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fetch(api).then(response => {
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if (response.ok)
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response.json().then(data => resolve(data))
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else
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reject(response)
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}).catch(error => reject(error))
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})
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return new Promise((resolve, reject) => {
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fetchData(`https://bitpay.com/api/rates`).then(result => {
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let BTC_USD, BTC_INR, USD_INR
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for (let i of result)
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i.code == "USD" ? BTC_USD = i.rate : i.code == "INR" ? BTC_INR = i.rate : null;
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USD_INR = BTC_INR / BTC_USD;
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resolve({
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BTC_USD,
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BTC_INR,
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USD_INR
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})
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}).catch(error => reject(error))
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})
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} |