Added config in .env file and added subpath

.gitignore

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

package.json

@@ -1,5 +1,6 @@
 {
   "dependencies": {
+    "dotenv": "^8.2.0",
     "express": "^4.17.1",
     "node-fetch": "^2.6.0"
   }

server.js

@@ -1,15 +1,20 @@
 #!/usr/bin/env node
 // vim: set ts=2 sw=2 et tw=80:
 
+require('dotenv').config()
+
 const http = require('http');
 const url	= require('url');
 const fetch = require('node-fetch');
 const express = require('express')
 const app = express()
-const port = 7000;
 
-app.get('/contacts', (req, res) => {
-  fetch('http://192.168.1.1/jrd/webapi?api=GetSMSContactList', {
+const { HOST, PORT, PREFIX, API } = process.env;
+
+app.get(PREFIX, (req, res) => res.redirect(PREFIX + '/contacts'));
+
+app.get(PREFIX + '/contacts', (req, res) => {
+  fetch(API + '?api=GetSMSContactList', {
     method: 'POST',
     body: JSON.stringify({
       jsonrpc: "2.0",
@@ -26,7 +31,8 @@ app.get('/contacts', (req, res) => {
           <h1>Contatti dei messaggi</h1>`;
 
       for (const m of e.result.SMSContactList) {
-        html += `<h4><a href="/messages/${m.ContactId}">${m.PhoneNumber[0]}</a></h4>
+        html += `<h4><a href="${PREFIX}/messages/${m.ContactId}">
+                 ${m.PhoneNumber[0]}</a></h4>
                  <p>${m.SMSContent}...</p>`;
       }
       html += `</body></html>`;
@@ -36,7 +42,7 @@ app.get('/contacts', (req, res) => {
     .catch(e => e.status(400).json({ error: e.toString() }));
 });
 
-app.get('/messages/:id', (req, res) => {
+app.get(PREFIX + '/messages/:id', (req, res) => {
   let id;
   if (!req.params.id || isNaN(id = parseInt(req.params.id))) {
     res.status(400).json({ error: `"${req.params.id}" is not a valid id` });
@@ -45,7 +51,7 @@ app.get('/messages/:id', (req, res) => {
 
   const page = parseInt(req.query.page) || 0;
 
-  fetch('http://192.168.1.1/jrd/webapi?api=GetSMSContentList', {
+  fetch(API + '?api=GetSMSContentList', {
     method: 'POST',
     body: JSON.stringify({
       jsonrpc: "2.0",
@@ -84,4 +90,5 @@ app.get('/messages/:id', (req, res) => {
     .catch(e => res.status(500).json({ error: e.toString() }));
 });
 
-app.listen(port, () => console.log(`Example app listening on port ${port}!`));
+app.listen(PORT, HOST,
+  () => console.log(`SMSReader listening on port ${HOST}:${PORT}!`));

yarn.lock

@@ -75,6 +75,11 @@ destroy@~1.0.4:
   resolved "https://registry.yarnpkg.com/destroy/-/destroy-1.0.4.tgz#978857442c44749e4206613e37946205826abd80"
   integrity sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA=
 
+dotenv@^8.2.0:
+  version "8.2.0"
+  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-8.2.0.tgz#97e619259ada750eea3e4ea3e26bceea5424b16a"
+  integrity sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw==
+
 ee-first@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"