Customizable hostname/port

.gitignore

-/env.json
+/settings.json
 /node_modules/
 /login.sqlite
\ No newline at end of file

app/server.js

@@ -3,6 +3,7 @@ const {createServer} = require("http");
 const {Server} = require("socket.io");
 const sgen = require('sudoku-gen');
 const login = require("./login.js")
+const fs = require("fs");
 
 const app = express();
 app.use(express.json());
@@ -13,8 +14,13 @@ const io = new Server(httpServer);
 
 app.use(express.static("public"));
 
-const port = 3000;
-const hostname = "localhost";
+const {
+    hostname,
+    port
+} = fs.existsSync("../settings.json") ? JSON.parse(fs.readFileSync("../settings.json").toString()) : {
+    hostname: "localhost",
+    port: 3000
+};
 
 const GAMES = new Map(); // maps game id -> game
 
@@ -392,5 +398,5 @@ io.on("connection", (socket) => {
 });
 
 httpServer.listen(port, hostname,() => {
-    console.log(`http://${hostname}:${port}`);
+    console.log(`Listening on hostname ${hostname} port ${port}`);
 });