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

if (!isset($_GET['id']) || !is_numeric($_GET['id'])) {
    http_response_code(400);
    echo 'ID non valido.';
    exit;
}

$id = (int)$_GET['id'];
$db = DBHandlerSelect::getInstance();
$pdo = $db->getConnection();

$stmt = $pdo->prepare("SELECT * FROM scad_deadline_attachments WHERE id = ?");
$stmt->execute([$id]);
$att = $stmt->fetch(PDO::FETCH_ASSOC);

if (!$att) {
    http_response_code(404);
    echo 'Allegato non trovato.';
    exit;
}

$filePath = __DIR__ . '/../attachments/' . $att['stored_name'];
if (!file_exists($filePath)) {
    http_response_code(404);
    echo 'File non trovato sul server.';
    exit;
}

header('Content-Type: ' . ($att['mime_type'] ?: 'application/octet-stream'));
header('Content-Disposition: attachment; filename="' . addslashes($att['original_name']) . '"');
header('Content-Length: ' . filesize($filePath));
readfile($filePath);
exit;