Create invoices in XML Format.

app/Http/Controllers/EController.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Http\Option;
+use App\Models\Invoice;
+use Symfony\Component\HttpFoundation\StreamedResponse;
+
+class EController extends Controller
+{
+    public function downloadInvoice(int $id): StreamedResponse
+    {
+        $invoice = Invoice::find($id);
+
+        $taxes = [];
+        foreach ($invoice->items as $item) {
+            if (!isset($taxes[$item->tax])) {
+                $taxes[$item->tax] = ['tax' => 0, 'taxable' => 0];
+            }
+            $taxes[$item->tax]['tax'] += round($item->price * $item->amount * $item->tax / 100, 2, PHP_ROUND_HALF_UP);
+            $taxes[$item->tax]['taxable'] += $item->price * $item->amount;
+         }
+
+        return response()->streamDownload(function () use ($invoice, $taxes) {
+            echo view('xml.invoice', ['invoice' => $invoice, 'options' => Option::optionsAsObject(), 'taxes' => $taxes]);
+        }, 'test.xml', ['Content-Type' => 'application/xml']);
+
+    }
+}