<?php
header('Content-Type: application/json');
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

require_once(__DIR__ . '/class/db-functions.php');

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

$data = json_decode(file_get_contents("php://input"), true);

if (!$data || !isset($data['template_id'], $data['xls_headers'])) {
    echo json_encode(["success" => false, "message" => "Invalid or missing data"]);
    exit;
}

$templateId = $data['template_id'];
$xlsHeaders = $data['xls_headers'];

try {
    $stmt = $pdo->prepare("UPDATE excel_templates SET xls_headers = ? WHERE id = ?");
    $result = $stmt->execute([$xlsHeaders, $templateId]);

    if (!$result) {
        echo json_encode(["success" => false, "message" => "Database update failed"]);
        exit;
    }

    echo json_encode(["success" => true, "message" => "XLS headers saved successfully"]);
} catch (Exception $e) {
    echo json_encode(["success" => false, "message" => "Error: " . $e->getMessage()]);
}
exit;