change username

goodchain/src/helpers/DatabaseHelper.py

@@ -53,7 +53,7 @@ class DatabaseHelper:
 
     def createUser(self, private_key, public_key, username, password):
         if not self.conn:
-            return False
+            return None
         try:
             self.cursor.execute("INSERT INTO `users` (private_key, public_key, username, password) VALUES (?, ?, ?, ?)", (private_key, public_key, username, password,))
             self.commit()
@@ -76,6 +76,37 @@ class DatabaseHelper:
             print(error)
             return None
         
+    def changeUsername(self, user_privatekey, username):
+        if not self.conn:
+            return None
+
+        # Execute the query
+        try:
+            self.cursor.execute("UPDATE `users` SET username = ? WHERE `private_key` = ?", (username, user_privatekey,))
+            self.commit()
+
+            return True
+
+        except sqlite3.Error as error:
+            print(error)
+            return None
+
+    def deleteUser(self, user_privatekey):
+        # Check if the database is open
+        if not self.conn:
+            return None
+
+        # Execute the query
+        try:
+            self.cursor.execute("DELETE FROM `users` WHERE `private_key` = ?", (user_privatekey, ))
+            self.commit()
+
+            return True
+
+        except sqlite3.Error as error:
+            print(error)
+            return None
+        
     def fetchUserByUsername(self, username):
         if not self.conn:
             return None

goodchain/src/helpers/MenuHelper.py

@@ -164,7 +164,7 @@ class MenuHelper:
                     print(user.private_key)
                 
                 case "Change username":
-                    print("TODO")
+                    user.updateAccount()
 
                 case "Change password":
                     user.updatePassword()