<?php

declare(strict_types=1);

use App\Admin\Auth;
use App\App\Bootstrap;
use App\Form\FormSchema;
use App\Mail\PdfGenerator;
use App\Mail\SubmissionFormatter;
use App\Storage\JsonStore;

require dirname(__DIR__) . '/src/autoload.php';
Bootstrap::init();

$auth = new Auth();
$auth->requireLogin();

$id = trim((string) ($_GET['id'] ?? ''));
$store = new JsonStore();
$submission = $store->getSubmissionByKey($id);
if ($submission === null) {
    http_response_code(404);
    echo 'Antrag nicht gefunden.';
    exit;
}

$schema = new FormSchema();
$formatter = new SubmissionFormatter($schema);
$pdfGenerator = new PdfGenerator($formatter, $schema);
$pdfPath = $pdfGenerator->generateFormDataPdf($submission);

if ($pdfPath === null || !is_file($pdfPath)) {
    http_response_code(500);
    echo 'PDF konnte nicht erstellt werden.';
    exit;
}

$formData = (array) ($submission['form_data'] ?? []);
$firstName = trim((string) ($formData['vorname'] ?? ''));
$lastName = trim((string) ($formData['nachname'] ?? ''));
$namePart = trim($firstName . '_' . $lastName, '_');

$downloadName = $namePart !== '' ? 'Antragsdaten_' . $namePart . '.pdf' : 'Antragsdaten.pdf';
$downloadName = str_replace(["\r", "\n"], '', $downloadName);
$fallbackName = preg_replace('/[^A-Za-z0-9._-]/', '_', $downloadName) ?: 'Antragsdaten.pdf';
$encodedName = rawurlencode($downloadName);

header('Content-Type: application/pdf');
header('Content-Length: ' . (string) filesize($pdfPath));
header('Content-Disposition: attachment; filename="' . $fallbackName . '"; filename*=UTF-8\'\'' . $encodedName);
readfile($pdfPath);
unlink($pdfPath);
exit;