<?php

if (session_status() !== PHP_SESSION_ACTIVE) session_start();

if (empty($_SESSION['access_granted_trainer']) || $_SESSION['access_granted_trainer'] !== true || empty($_SESSION['user_id_trainer']) || $_SESSION['user_id_trainer'] < 1) {
    http_response_code(403);
    exit;
}

if (!isset($_POST['preis']) || !isset($_POST['name']) || !isset($_POST['vorname']) || !isset($_POST['strasse']) || !isset($_POST['plz']) || !isset($_POST['ort']) || !isset($_POST['hausnummer'])) {
    echo json_encode(['success' => false, 'message' => 'Invalid input']);
    exit;
}

if (!isset($baseDir)) $baseDir = $_SERVER['DOCUMENT_ROOT'];

require $baseDir . '/../composer/vendor/autoload.php';

use Sprain\SwissQrBill as QrBill;


// This is an example how to create a typical qr bill:
// - with reference number
// - with known debtor
// - with specified amount
// - with human-readable additional information
// - using your QR-IBAN
//
// Likely the most common use-case in the business world.

// Create a new instance of QrBill, containing default headers with fixed values
$qrBill = QrBill\QrBill::create();

$name   = trim((string)($rechnungenVorname ?? '') . ' ' . (string)($rechnungenName ?? ''));
$strasse = (string)($rechnungenStrasse ?? '');
$hausnr  = (string)($rechnungenHausnummer ?? '');
$plz     = (string)($rechnungenPostleitzahl ?? '');
$ort     = (string)($rechnungenOrt ?? '');

$qrBill->setCreditor(
    QrBill\DataGroup\Element\StructuredAddress::createWithStreet(
        $name,
        $strasse,
        $hausnr,
        $plz,
        $ort,
        'CH'
    )
);

$iban = strtoupper(str_replace(' ', '', (string)($rechnungenIBAN ?? '')));

$qrBill->setCreditorInformation(
    QrBill\DataGroup\Element\CreditorInformation::create($iban)
);

// Add debtor information
// Who has to pay the invoice? This part is optional.
$qrBill->setUltimateDebtor(
    QrBill\DataGroup\Element\StructuredAddress::createWithStreet(
        $_POST['vorname'] . ' ' . $_POST['name'],
        $_POST['strasse'],
        $_POST['hausnummer'],
        $_POST['plz'],
        $_POST['ort'],
        'CH'
    )
);

// Add payment amount information
// What amount is to be paid?
$qrBill->setPaymentAmountInformation(
    QrBill\DataGroup\Element\PaymentAmountInformation::create(
        'CHF',
        $totalPreis
    )
);

// Add payment reference
// This is what you will need to identify incoming payments.
$qrBill->setPaymentReference(
    QrBill\DataGroup\Element\PaymentReference::create(
        QrBill\DataGroup\Element\PaymentReference::TYPE_SCOR,
        QrBill\Reference\RfCreditorReferenceGenerator::generate($dbresult['order_id'])
    )
);

$month = date('m');

if ($month < 6){
    $jahr = date('Y');
} else {
    $jahr = date('Y') + 1;
}

$referenz = "Startgebühren ". $wkName. " ".$jahr;

// Optionally, add some human-readable information about what the bill is for.
$qrBill->setAdditionalInformation(
    QrBill\DataGroup\Element\AdditionalInformation::create(
        $referenz
    )
);

// Now get the QR code image and save it as a file.
/*try {
    $qrBill->getQrCode()->writeFile(__DIR__ . '/qrneu.png');
    $qrBill->getQrCode()->writeFile(__DIR__ . '/qrneu.svg');
} catch (\Throwable $e) {
    foreach ($qrBill->getViolations() as $violation) {
        print $violation->getMessage()."\n";
    }
    // Also print exception message when available
    error_log('QR bill error: ' . $e->getMessage());
    exit;
}*/

// Next: Output full payment parts, depending on the format you want to use:
//
// - FpdfOutput/fpdf-example.php
// - HtmlOutput/html-example.php
// - TcPdfOutput/tcpdf-example.php