Larger refactoring and added avoidlist

client/handlers/addUserToAvoidList.ts

@@ -0,0 +1,20 @@
+import * as fileSystem from 'fs';
+import express from 'express';
+import { loadAvoidList } from '../../helpers/load-avoid-list';
+
+/**
+ * Adds a user to the avoid list.
+ * @param user - The user to add to the avoid list.
+ * @returns void
+ */
+export function AddUserToAvoidList(response: express.Response, request: express.Request) {
+    const avoidList = loadAvoidList();
+
+    if (avoidList.avoidUsers.includes(request.body.user)) {
+        response.send('User already in avoid list.');
+    } else {
+        avoidList.avoidUsers.push(request.body.user);
+        fileSystem.writeFileSync('avoid-list.json', JSON.stringify(avoidList, null, "\t"));
+        response.send('User added to avoid list.');
+    }
+}