<?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();

$template_id = $_GET['template_id'] ?? 0;

try {
    $stmt = $pdo->prepare("SELECT id, field_id, excel_column, is_manual, manual_default, field_label FROM template_mapping WHERE template_id = ?");
    $stmt->execute([$template_id]);
    $mappings = $stmt->fetchAll(PDO::FETCH_ASSOC);

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