musadaq-saas/app/Services/JoFotara/UBLGeneratorService.php

<?php
declare(strict_types=1);
namespace App\Services\JoFotara;

use DOMDocument;
use DOMElement;

final class UBLGeneratorService
{
    public function generate(array $invoice, array $lines, array $company): string
    {
        $dom = new DOMDocument('1.0', 'UTF-8');
        $dom->formatOutput = true;

        $root = $dom->createElementNS('urn:oasis:names:specification:ubl:schema:xsd:Invoice-2', 'Invoice');
        $root->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:cac', 'urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2');
        $root->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:cbc', 'urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2');
        $dom->appendChild($root);

        // 1. Basic Information
        $root->appendChild($dom->createElement('cbc:UBLVersionID', '2.1'));
        $root->appendChild($dom->createElement('cbc:CustomizationID', 'TRADACO-2.1'));
        $root->appendChild($dom->createElement('cbc:ProfileID', 'reporting:1.0'));
        $root->appendChild($dom->createElement('cbc:ID', $invoice['invoice_number']));
        $root->appendChild($dom->createElement('cbc:IssueDate', $invoice['invoice_date']));
        
        $typeCode = $dom->createElement('cbc:InvoiceTypeCode', $invoice['ubl_type_code'] ?? '388');
        $typeCode->setAttribute('name', $invoice['invoice_category'] ?? '01');
        $root->appendChild($typeCode);
        
        $root->appendChild($dom->createElement('cbc:DocumentCurrencyCode', 'JOD'));
        $root->appendChild($dom->createElement('cbc:TaxCurrencyCode', 'JOD'));

        // 2. AccountingSupplierParty
        $supplierParty = $dom->createElement('cac:AccountingSupplierParty');
        $party = $dom->createElement('cac:Party');
        
        $partyId = $dom->createElement('cac:PartyIdentification');
        $id = $dom->createElement('cbc:ID', $company['tax_identification_number']);
        $id->setAttribute('schemeID', 'TN');
        $partyId->appendChild($id);
        $party->appendChild($partyId);

        $partyName = $dom->createElement('cac:PartyName');
        $partyName->appendChild($dom->createElement('cbc:Name', $company['name']));
        $party->appendChild($partyName);

        $postalAddr = $dom->createElement('cac:PostalAddress');
        $postalAddr->appendChild($dom->createElement('cbc:CityName', $company['city'] ?? 'Amman'));
        $country = $dom->createElement('cac:Country');
        $country->appendChild($dom->createElement('cbc:IdentificationCode', 'JO'));
        $postalAddr->appendChild($country);
        $party->appendChild($postalAddr);

        $taxScheme = $dom->createElement('cac:PartyTaxScheme');
        $taxScheme->appendChild($dom->createElement('cbc:RegistrationName', $company['name']));
        $taxScheme->appendChild($dom->createElement('cbc:CompanyID', $company['tax_identification_number']));
        $ts = $dom->createElement('cac:TaxScheme');
        $ts->appendChild($dom->createElement('cbc:ID', 'VAT'));
        $taxScheme->appendChild($ts);
        $party->appendChild($taxScheme);

        $legalEntity = $dom->createElement('cac:PartyLegalEntity');
        $legalEntity->appendChild($dom->createElement('cbc:RegistrationName', $company['name']));
        $legalEntity->appendChild($dom->createElement('cbc:CompanyID', $company['tax_identification_number']));
        $party->appendChild($legalEntity);

        $supplierParty->appendChild($party);
        $root->appendChild($supplierParty);

        // 3. AccountingCustomerParty
        $customerParty = $dom->createElement('cac:AccountingCustomerParty');
        $cparty = $dom->createElement('cac:Party');
        
        if (!empty($invoice['buyer_tin']) || !empty($invoice['buyer_national_id'])) {
            $cpartyId = $dom->createElement('cac:PartyIdentification');
            $cid = $dom->createElement('cbc:ID', $invoice['buyer_tin'] ?: $invoice['buyer_national_id']);
            $cid->setAttribute('schemeID', $invoice['buyer_tin'] ? 'TN' : 'NID');
            $cpartyId->appendChild($cid);
            $cparty->appendChild($cpartyId);
        }

        $cpartyName = $dom->createElement('cac:PartyName');
        $cpartyName->appendChild($dom->createElement('cbc:Name', $invoice['buyer_name'] ?? 'General Customer'));
        $cparty->appendChild($cpartyName);

        $ctaxScheme = $dom->createElement('cac:PartyTaxScheme');
        $cts = $dom->createElement('cac:TaxScheme');
        $cts->appendChild($dom->createElement('cbc:ID', 'VAT'));
        $ctaxScheme->appendChild($cts);
        $cparty->appendChild($ctaxScheme);

        $customerParty->appendChild($cparty);
        $root->appendChild($customerParty);

        // 4. PaymentMeans
        $paymentMeans = $dom->createElement('cac:PaymentMeans');
        $paymentMeans->appendChild($dom->createElement('cbc:PaymentMeansCode', $invoice['payment_method_code'] ?? '013'));
        $root->appendChild($paymentMeans);

        // 5. TaxTotal
        $taxTotal = $dom->createElement('cac:TaxTotal');
        $taxAmt = $dom->createElement('cbc:TaxAmount', number_format((float)$invoice['tax_amount'], 3, '.', ''));
        $taxAmt->setAttribute('currencyID', 'JOD');
        $taxTotal->appendChild($taxAmt);
        
        // Group lines by tax rate
        $taxGroups = [];
        foreach ($lines as $line) {
            $rate = number_format((float)$line['tax_rate'], 2, '.', '');
            if (!isset($taxGroups[$rate])) {
                $taxGroups[$rate] = ['taxable' => 0, 'tax' => 0];
            }
            $taxGroups[$rate]['taxable'] += ($line['quantity'] * $line['unit_price']) - $line['discount'];
            $taxGroups[$rate]['tax'] += $line['tax_amount'];
        }

        foreach ($taxGroups as $rate => $data) {
            $taxSubtotal = $dom->createElement('cac:TaxSubtotal');
            
            $subtaxable = $dom->createElement('cbc:TaxableAmount', number_format($data['taxable'], 3, '.', ''));
            $subtaxable->setAttribute('currencyID', 'JOD');
            $taxSubtotal->appendChild($subtaxable);
            
            $subtaxamt = $dom->createElement('cbc:TaxAmount', number_format($data['tax'], 3, '.', ''));
            $subtaxamt->setAttribute('currencyID', 'JOD');
            $taxSubtotal->appendChild($subtaxamt);
            
            $taxCategory = $dom->createElement('cac:TaxCategory');
            $taxCategory->appendChild($dom->createElement('cbc:ID', 'S'));
            $taxCategory->appendChild($dom->createElement('cbc:Percent', number_format((float)$rate * 100, 2, '.', '')));
            $tcs = $dom->createElement('cac:TaxScheme');
            $tcs->appendChild($dom->createElement('cbc:ID', 'VAT'));
            $taxCategory->appendChild($tcs);
            $taxSubtotal->appendChild($taxCategory);
            
            $taxTotal->appendChild($taxSubtotal);
        }
        $root->appendChild($taxTotal);

        // 6. LegalMonetaryTotal
        $lmt = $dom->createElement('cac:LegalMonetaryTotal');
        
        $fields = [
            'LineExtensionAmount' => $invoice['subtotal'] - $invoice['discount_total'],
            'TaxExclusiveAmount' => $invoice['subtotal'] - $invoice['discount_total'],
            'TaxInclusiveAmount' => $invoice['grand_total'],
            'AllowanceTotalAmount' => $invoice['discount_total'],
            'PayableAmount' => $invoice['grand_total']
        ];

        foreach ($fields as $field => $value) {
            $f = $dom->createElement('cbc:' . $field, number_format((float)$value, 3, '.', ''));
            $f->setAttribute('currencyID', 'JOD');
            $lmt->appendChild($f);
        }
        $root->appendChild($lmt);

        // 7. InvoiceLine
        foreach ($lines as $line) {
            $invLine = $dom->createElement('cac:InvoiceLine');
            $invLine->appendChild($dom->createElement('cbc:ID', (string)$line['line_number']));
            
            $qty = $dom->createElement('cbc:InvoicedQuantity', number_format((float)$line['quantity'], 3, '.', ''));
            $qty->setAttribute('unitCode', 'PCE');
            $invLine->appendChild($qty);
            
            $lineExt = $dom->createElement('cbc:LineExtensionAmount', number_format($line['line_total'], 3, '.', ''));
            $lineExt->setAttribute('currencyID', 'JOD');
            $invLine->appendChild($lineExt);

            // Line Tax
            $lineTax = $dom->createElement('cac:TaxTotal');
            $ltaxAmt = $dom->createElement('cbc:TaxAmount', number_format((float)$line['tax_amount'], 3, '.', ''));
            $ltaxAmt->setAttribute('currencyID', 'JOD');
            $lineTax->appendChild($ltaxAmt);
            $invLine->appendChild($lineTax);

            $item = $dom->createElement('cac:Item');
            $item->appendChild($dom->createElement('cbc:Description', $line['description']));
            $itc = $dom->createElement('cac:TaxCategory');
            $itc->appendChild($dom->createElement('cbc:ID', 'S'));
            $itc->appendChild($dom->createElement('cbc:Percent', number_format((float)$line['tax_rate'] * 100, 2, '.', '')));
            $its = $dom->createElement('cac:TaxScheme');
            $its->appendChild($dom->createElement('cbc:ID', 'VAT'));
            $itc->appendChild($its);
            $item->appendChild($itc);
            $invLine->appendChild($item);

            $price = $dom->createElement('cac:Price');
            $pamt = $dom->createElement('cbc:PriceAmount', number_format((float)$line['unit_price'], 3, '.', ''));
            $pamt->setAttribute('currencyID', 'JOD');
            $price->appendChild($pamt);
            $invLine->appendChild($price);

            $root->appendChild($invLine);
        }

        return $dom->saveXML();
    }
}