Check if username exists

app/classes/controllers/users_controller.py

@@ -100,6 +100,10 @@ class UsersController:
     def get_all_user_ids() -> t.List[int]:
         return HelperUsers.get_all_user_ids()
 
+    @staticmethod
+    def get_all_usernames():
+        return HelperUsers.get_all_usernames()
+
     @staticmethod
     def get_id_by_name(username):
         return HelperUsers.get_user_id_by_name(username)

app/classes/models/users.py

@@ -99,6 +99,14 @@ class HelperUsers:
         query = Users.select().where(Users.username != "system")
         return query
 
+    @staticmethod
+    def get_all_usernames():
+        usernames = []
+        query = Users.select().where(Users.username != "system")
+        for user in query:
+            usernames.append(user.username)
+        return usernames
+
     @staticmethod
     def get_all_user_ids() -> t.List[int]:
         return [

app/classes/web/panel_handler.py

@@ -1860,6 +1860,13 @@ class PanelHandler(BaseHandler):
                 )
             user_id = bleach.clean(self.get_argument("id", None))
             username = bleach.clean(self.get_argument("username", None).lower())
+            if (
+                username != self.controller.users.get_user_by_id(user_id)["username"]
+                and username in self.controller.users.get_all_usernames()
+            ):
+                self.redirect(
+                    "/panel/error?error=Duplicate User: Useranme already exists."
+                )
             password0 = bleach.clean(self.get_argument("password0", None))
             password1 = bleach.clean(self.get_argument("password1", None))
             email = bleach.clean(self.get_argument("email", "default@example.com"))

app/frontend/templates/panel/panel_edit_user.html

@@ -76,28 +76,28 @@
                           }}<small class="text-muted ml-1"> - {{ translate('userConfig', 'userNameDesc', data['lang'])
                             }}</small> </label>
                         <input type="text" class="form-control" name="username" id="username" autocomplete="off"
-                          value="{{ data['user']['username']  }}" placeholder="User Name">
+                          data-lpignore="true" value="{{ data['user']['username']  }}" placeholder="User Name">
                       </div>
                       <div class="form-group">
                         <label class="form-label" for="password0">{{ translate('userConfig', 'password', data['lang'])
                           }}<small class="text-muted ml-1"> - {{ translate('userConfig', 'leaveBlank', data['lang']) }}
                           </small> </label>
                         <input type="password" class="form-control" name="password0" id="password0" value=""
-                          autocomplete="off" placeholder="Password">
+                          autocomplete="new-password" data-lpignore="true" placeholder="Password">
                       </div>
                       <div class="form-group">
                         <label class="form-label" for="password1">{{ translate('userConfig', 'repeat', data['lang']) }}
                           <small class="text-muted ml-1"> - {{ translate('userConfig', 'leaveBlank', data['lang'])
                             }}</small> </label>
                         <input type="password" class="form-control" name="password1" id="password1" value=""
-                          autocomplete="off" placeholder="Repeat Password">
+                          autocomplete="new-password" data-lpignore="true" placeholder="Repeat Password">
                       </div>
                       <div class="form-group">
                         <label class="form-label" for="email">{{ translate('userConfig', 'gravEmail', data['lang'])
                           }}<small class="text-muted ml-1"> - {{ translate('userConfig', 'gravDesc', data['lang'])
                             }}</small> </label>
                         <input type="email" class="form-control" name="email" id="email" autocomplete="off"
-                          value="{{ data['user']['email'] }}" placeholder="Gravatar Email">
+                          data-lpignore="true" value="{{ data['user']['email'] }}" placeholder="Gravatar Email">
                       </div>
                       <div class="form-group">
                         <label class="form-label" for="language">{{ translate('userConfig', 'userLang', data['lang'])