Adds langs to path and redirect to staging if payment method is advcash or payeer

index.js

@@ -1,73 +1,105 @@
-const express = require('express');
-const path = require('path');
-const helmet = require('helmet')
+const express = require("express");
+const path = require("path");
+const helmet = require("helmet");
+const url = require("url");
 
 const app = express();
-const NEXCHANGE_ROOT = process.env.NEXCHANGE_ROOT
-const ICO_ROOT = process.env.ICO_ROOT
+const NEXCHANGE_ROOT = process.env.NEXCHANGE_ROOT;
+const ICO_ROOT = process.env.ICO_ROOT;
 
 //Helmet helps you secure your Express apps by setting various HTTP headers.
-app.use(helmet())
-app.use('/ico', express.static(path.resolve(ICO_ROOT)));
-app.use(express.static(path.resolve(NEXCHANGE_ROOT), {index: false}));
+app.use(helmet());
+app.use("/ico", express.static(path.resolve(ICO_ROOT)));
+app.use(express.static(path.resolve(NEXCHANGE_ROOT), { index: false }));
 
 function getCur(qParam) {
-    return qParam.toUpperCase().substr(-3);
+  return qParam.toUpperCase().substr(-3);
 }
 
-app.get('/ico', (req, res) => {
-  res.sendFile(path.resolve(ICO_ROOT, 'index.html'));
+app.get("/ico", (req, res) => {
+  res.sendFile(path.resolve(ICO_ROOT, "index.html"));
 });
 
 // Handling lowercase order Ids
-var orderUppercase = (req, res, next) => {
-
-  if (req.params.orderId) {
-    const orderIdUP =  req.params.orderId.toUpperCase()
-    if (req.params.orderId != orderIdUP) {
-      res.redirect('/order/' + orderIdUP)
-    }
-    else {
-      next()
-    }
+const orderUppercase = (req, res, next) => {
+  const orderIdUP = req.params.orderId.toUpperCase();
+  if (req.params.orderId !== orderIdUP) {
+    res.redirect(`/${lang}/order/${orderIdUP}`);
+  } else {
+    next();
   }
 };
 
 // General handler for the rest of the URLs
-var generalHandler = (req, res) => {
+const generalHandler = (req, res) => {
+  let host = undefined;
+  let urlPath = req.path;
+  const langInPath = urlPath.split("/")[1];
+  const langInParam = req.query.lang ? req.query.lang.toLowerCase() : undefined;
+  let lang = langInPath || langInParam || "en";
+  const fromCurr = req.query.cur_from;
+  const toCurr = req.query.cur_to;
+  const validLanguages = ["en", "de", "ru"];
 
   let redirectRequired = false;
-  let params = {};
-  if (req.query.cur_from && req.query.cur_to) {
+
+  // Dont add language path in url, if its not n.exchange
+  if (
+    !req.headers.host.includes("n.exchange") &&
+    !req.headers.host.includes("localhost")
+  )
+    lang = "";
+
+  if (validLanguages.includes(langInPath)) {
+    res.header("Set-Cookie", `i18next=${lang}`);
+
+    urlPath = urlPath.substr(lang.length + 1);
+
+    // If lang is in path then ignore lang in param
+    delete req.query["lang"];
+  }
+
+  if (fromCurr && toCurr) {
+    const fromCurrType = fromCurr.substr(0, fromCurr.length - 3);
+
+    if (["ADVC", "PR"].includes(fromCurrType)) host = "s.api.n.exchange";
+
+    console.log(fromCurrType);
+    req.query.pair = getCur(toCurr) + getCur(fromCurr);
+    delete req.query.cur_from;
+    delete req.query.cur_to;
     redirectRequired = true;
-    req.query.pair = getCur(req.query.cur_to) + getCur(req.query.cur_from);
-    delete req.query['cur_to'];
-    delete req.query['cur_from'];
   }
 
-  if (req.query.lang && req.query.lang !== req.query.lang.toLowerCase()) {
+  if (req.query.lang && validLanguages.includes(langInParam)) {
+    delete req.query["lang"];
     redirectRequired = true;
-    req.query.lang =  req.query.lang.toLowerCase()
   }
 
   if (redirectRequired) {
-    params = req.query;
-    params = Object.keys(params).map(key => key + '=' + params[key]).join('&');
-    res.redirect(req.path + '?' + params);
+    const redirectUrl = url.format({
+      pathname: urlPath === "/" ? `/${lang}` : `/${lang}${urlPath}`,
+      query: req.query,
+    });
+
+    if (host) {
+      res.redirect(`https://${host}${redirectUrl}`);
+      return;
+    }
+
+    res.redirect(redirectUrl);
     return;
   }
 
-  res.sendFile(path.resolve(process.env.NEXCHANGE_ROOT, 'index.html'));
+  res.sendFile(path.resolve(process.env.NEXCHANGE_ROOT, "index.html"));
 };
 
 // Convert order ids to uppercase
-app.get('/order/:orderId', [orderUppercase, generalHandler]
-);
+app.get("/order/:orderId", [orderUppercase, generalHandler]);
 
 // For all other cases
-app.get('*', generalHandler);
-
-
-app.listen(3000, () => console.log('Nexchange Frontend Proxy is listening on port 3000!'));
-
+app.get("*", generalHandler);
 
+app.listen(3000, () =>
+  console.log("Nexchange Frontend Proxy is listening on port 3000!")
+);