<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

include('include/headscript.php'); // Assumi che questo includa la connessione DB

// Recupera il payload JSON
$data = json_decode(file_get_contents('php://input'), true);

$template_id = intval($data['template_id']);
$mapping_id = intval($data['mapping_id']);
$value = intval($data['value']);

if ($template_id <= 0 || $mapping_id <= 0) {
    echo json_encode(['success' => false, 'message' => 'Invalid IDs']);
    exit;
}

$db = DBHandlerSelect::getInstance();
$pdo = $db->getConnection();

try {
    $pdo->beginTransaction();

    if ($value === 1) {
        // Setta tutti main_field a 0 per questo template
        $stmt = $pdo->prepare("UPDATE template_mapping SET main_field = 0 WHERE template_id = ?");
        $stmt->execute([$template_id]);
    }

    // Setta il valore per questo mapping
    $stmt = $pdo->prepare("UPDATE template_mapping SET main_field = ? WHERE id = ? AND template_id = ?");
    $stmt->execute([$value, $mapping_id, $template_id]);

    $pdo->commit();
    echo json_encode(['success' => true]);
} catch (Exception $e) {
    $pdo->rollBack();
    echo json_encode(['success' => false, 'message' => $e->getMessage()]);
}