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<?php
/**
 * Invoice Ninja (https://invoiceninja.com).
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2024. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://www.elastic.co/licensing/elastic-license
 */

namespace App\Helpers\Epc;

use App\Models\Company;
use App\Models\Invoice;
use App\Models\RecurringInvoice;
use App\Utils\Ninja;
use BaconQrCode\Exception\InvalidArgumentException;
use BaconQrCode\Renderer\Image\SvgImageBackEnd;
use BaconQrCode\Renderer\ImageRenderer;
use BaconQrCode\Renderer\RendererStyle\RendererStyle;
use BaconQrCode\Writer;

/**
 * EpcQrGenerator.
 */
class EpcQrGenerator
{
    // private array $sepa = [
    //     'serviceTag' => 'BCD',
    //     'version' => 2,
    //     'characterSet' => 1,
    //     'identification' => 'SCT',
    //     'bic' => '',
    //     'purpose' => '',

// ];

public function __construct(protected Company $company, protected Invoice|RecurringInvoice $invoice, protected float $amount)
    {
    }

public function getQrCode()
    {
        $qr = '';

try {
            $renderer = new ImageRenderer(
                new RendererStyle(200),
                new SvgImageBackEnd()
            );
            $writer = new Writer($renderer);

$this->validateFields();

$qr = $writer->writeString($this->encodeMessage(), 'utf-8');

return htmlspecialchars("<svg viewBox='0 0 200 200' width='200' height='200' x='0' y='0' xmlns='http://www.w3.org/2000/svg'>
          <rect x='0' y='0' width='100%'' height='100%' />{$qr}</svg>");

} catch (\Throwable $e) {
            nlog("EPC QR failure => ".$e->getMessage());
            return '';
        }

}

public function encodeMessage()
    {
        // return rtrim(implode("\n", [
        //     $this->sepa['serviceTag'],
        //     sprintf('%03d', $this->sepa['version']),
        //     $this->sepa['characterSet'],
        //     $this->sepa['identification'],
        //     isset($this->company?->custom_fields?->company2) ? $this->company->settings->custom_value2 : '',
        //     $this->company->present()->name(),
        //     isset($this->company?->custom_fields?->company1) ? $this->company->settings->custom_value1 : '',
        //     $this->formatMoney($this->amount),
        //     $this->sepa['purpose'],
        //     substr($this->invoice->number, 0, 34),
        //     '',
        //     ' '
        // ]), "\n");

$data = [
            'BCD',
            '002', // Version
            '1', // Encoding: 1 = UTF-8
            'SCT', // Service Tag: SEPA Credit Transfer
            isset($this->company?->custom_fields?->company2) ? $this->company->settings->custom_value2 : '', // BIC
            $this->company->present()->name(), // Name of the beneficiary
            isset($this->company?->custom_fields?->company1) ? $this->company->settings->custom_value1 : '', // IBAN
            $this->formatMoney($this->amount), // Amount with EUR prefix
            '', // Reference
            substr(($this->invoice->number ?? ''), 0, 34) // Unstructured remittance information
        ];

return implode("\n", $data);

}

private function validateFields()
    {
        if (Ninja::isSelfHost() && isset($this->company?->custom_fields?->company2)) {
            // nlog('The BIC field is not present and _may_ be a required fields for EPC QR codes');
        }

if (Ninja::isSelfHost() && isset($this->company?->custom_fields?->company1)) {
            // nlog('The IBAN field is required');
        }

}

private function formatMoney($value)
    {
        return sprintf('EUR%s', number_format($value, 2, '.', ''));
    }
}