implement connection between servers

utility.ts

@@ -1,5 +1,11 @@
 import Colors from "colors";
+import Fs from "fs/promises";
+import { WebSocketMessage } from "./websocket-handler";
 
+// CONFIG
+const indent = 25;
+
+// METHODS
 export function guardStringNotEmpty(
   data: any,
   cb: (data: string) => void
@@ -8,10 +14,36 @@ export function guardStringNotEmpty(
   cb(data);
 }
 
-export function writeInfo(label: string, value: string) {
-  console.log(label.padEnd(20, " "), Colors.bold.green(value));
+// writing
+async function writeToLogFile(message: string): Promise<void> {
+  await Fs.appendFile("logs", `${message}\n`);
 }
 
-export function writeStat(label: string, value: number) {
-  console.log(label.padEnd(20, " "), Colors.bold.blue(value.toString()));
+export function writeInfo(label: string, value: string): void {
+  console.log(`${label.padEnd(indent, " ")} ${Colors.bold.green(value)}`);
+}
+
+export function writeStat(label: string, value: number): void {
+  console.log(
+    `${label.padEnd(indent, " ")} ${Colors.bold.blue(value.toString())}`
+  );
+}
+
+export function writeError(message: string): void {
+  console.log(Colors.bold.red(message));
+  writeToLogFile(message);
+}
+
+export function writeSuccess(message: string): void {
+  console.log(Colors.bold.green(message));
+  writeToLogFile(message);
+}
+
+// messages
+export function stringifyMessage(messageObject: WebSocketMessage): string {
+  return JSON.stringify(messageObject);
+}
+
+export function parseMessage(messageString: string): Object {
+  return JSON.parse(messageString);
 }