From a3282febc9b3e70e494b2319fbe7ac001808c06d Mon Sep 17 00:00:00 2001
From: Alex Tselegidis <alextselegidis@gmail.com>
Date: Sat, 18 Dec 2021 18:55:58 +0100
Subject: [PATCH] Added new callback to the account controller to validate
 usernames

---
 application/controllers/Account.php   | 23 +++++++++++++++++++++++
 assets/js/http/account_http_client.js | 21 ++++++++++++++++++++-
 2 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/application/controllers/Account.php b/application/controllers/Account.php
index 47fb9c15..da593cf2 100644
--- a/application/controllers/Account.php
+++ b/application/controllers/Account.php
@@ -102,4 +102,27 @@ class Account extends EA_Controller {
             json_exception($e);
         }
     }
+
+    /**
+     * Make sure the username is valid and unique in the database. 
+     */
+    public function validate_username()
+    {
+        try
+        {
+            $username = request('username');
+
+            $user_id = request('user_id');
+
+            $is_valid = $this->users_model->validate_username($username, $user_id);
+
+            json_response([
+                'is_valid' => $is_valid,
+            ]);
+        }
+        catch (Throwable $e)
+        {
+            json_exception($e);
+        }
+    }
 }
diff --git a/assets/js/http/account_http_client.js b/assets/js/http/account_http_client.js
index 10cee5c7..3ff9d464 100644
--- a/assets/js/http/account_http_client.js
+++ b/assets/js/http/account_http_client.js
@@ -28,7 +28,26 @@ App.Http.Account = (function () {
         return $.post(url, data);
     }
 
+    /**
+     * Validate username.
+     *
+     * @param {String} username
+     *
+     * @return {Object}
+     */
+    function validateUsername(username) {
+        const url = App.Utils.Url.siteUrl('account/validate_username');
+
+        const data = {
+            csrf_token: App.Vars.csrf_token,
+            username
+        };
+
+        return $.post(url, data);
+    }
+
     return {
-        save
+        save,
+        validateUsername
     };
 })();