Fix codice a barre + fix fornitore + fix codice alternativo

utils/connection.py

@@ -0,0 +1,23 @@
+import mysql.connector
+from mysql.connector import Error
+
+def create_connection(host_name, user_name, user_password, db_name,port):
+    connection = None
+    try:
+        connection = mysql.connector.connect(
+            host=host_name,
+            user=user_name,
+            password=user_password,
+            database=db_name,
+            port=port,
+            ssl_disabled=True
+        )
+        print("Connessione al database riuscita!")
+    except Error as e:
+        print(f"Errore: {e}")
+    return connection
+
+def close_connection(connection):
+    if connection is not None and connection.is_connected():
+        connection.close()
+        print("Connessione al database chiusa.")