added schema details

public/userarea/update_schemajson.php

@@ -0,0 +1,56 @@
+<?php
+header('Content-Type: application/json');
+require_once 'class/db-functions.php';
+
+// Disabilita l'output di errori HTML
+ini_set('display_errors', '0');
+error_reporting(E_ALL);
+
+$response = ["success" => false, "message" => ""];
+
+try {
+    if ($_SERVER["REQUEST_METHOD"] !== "POST") {
+        throw new Exception("Invalid request method.");
+    }
+
+    // Recupera i dati dal body JSON (non da $_POST direttamente)
+    $input = json_decode(file_get_contents('php://input'), true);
+    $template_id = isset($input['template_id']) ? intval($input['template_id']) : null;
+    $schemajson = isset($input['schemajson']) ? trim($input['schemajson']) : '';
+
+    // Controllo sui campi obbligatori
+    if (empty($template_id) || empty($schemajson)) {
+        throw new Exception("All fields marked with * are required, including schemajson.");
+    }
+
+    // Validazione del JSON
+    $decoded_json = json_decode($schemajson, true);
+    if (json_last_error() !== JSON_ERROR_NONE) {
+        throw new Exception("Invalid JSON format for schemajson.");
+    }
+
+    // Connessione al database
+    $db = DBHandlerSelect::getInstance();
+    $pdo = $db->getConnection();
+
+    // Aggiorna il database
+    $stmt = $pdo->prepare("UPDATE excel_templates 
+                           SET schemajson = ?, updated_at = NOW() 
+                           WHERE id = ?");
+    $stmt->execute([
+        $schemajson,
+        $template_id
+    ]);
+
+    if ($stmt->rowCount() > 0) {
+        $response["message"] = "Schema JSON updated successfully!";
+    } else {
+        $response["message"] = "No changes detected, but operation completed.";
+    }
+    $response["success"] = true;
+} catch (Exception $e) {
+    $response["message"] = $e->getMessage();
+}
+
+// Restituisce un JSON per il fetch
+echo json_encode($response);