Added a forex exchange calculator

README.md

@@ -47,6 +47,8 @@
 <img src="https://avatars.githubusercontent.com/u/45143018?v=4" width="9%"></img>
 <img src="https://avatars.githubusercontent.com/u/16155802?v=4" width="9%"></img>
 <img src="https://avatars.githubusercontent.com/u/67181608?v=4" width="9%"></img>
+<img src="https://avatars.githubusercontent.com/u/185689688?v=4" width="9%"></img>
+
 
 
 

forex exchange calculator/.gitignore

@@ -0,0 +1,2 @@
+node_modules/
+.env

forex exchange calculator/index.js

@@ -0,0 +1,36 @@
+require('dotenv').config();
+const { default: axios } = require('axios');
+const express = require('express');
+const app = express();
+const httpServer = require('http').createServer(app);
+const circularJSON = require('circular-json');
+const PORT = process.env.PORT || 80;
+const IP_ADDRESS = process.env.IP_ADDRESS || "127.0.0.1";
+const API_KEY = process.env.API_KEY; // you only need to get api key from https://app.exchangerate-api.com
+const path = require('path');
+
+app.use(express.json());
+app.use(express.urlencoded({extended:true}));
+app.use(express.static('public'));
+app.use('/static',express.static('public'));
+app.get('/',(req,res)=>{
+    console.log("OK")
+    res.sendFile(path.join(__dirname,'public','calculator.html'))
+})
+
+app.post('/run',async (req,res)=>{
+    const from = req.body.from;
+    const to = req.body.to;
+    const amount = req.body.amount;
+    try{
+        var resp = await axios.get(`https://v6.exchangerate-api.com/v6/${API_KEY}/latest/${from}`);
+        resp = JSON.parse(circularJSON.stringify(resp));
+        num = resp?.data?.conversion_rates[to];
+        realValue = Number(num)*Number(amount);
+        res.status(200).json({'value':realValue});
+    }catch(error){console.log(error);res.status(404).json({"message":"error occur"})}
+})
+
+httpServer.listen(PORT,IP_ADDRESS,()=>{
+    console.log('server is running')
+})