Add Purchase component to BillingPortal

app/Livewire/BillingPortal/Purchase.php

@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2022. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://www.elastic.co/licensing/elastic-license
+ */
+
+namespace App\Livewire\BillingPortal;
+
+use App\Libraries\MultiDB;
+use App\Models\Subscription;
+use Livewire\Attributes\Computed;
+use Livewire\Attributes\On;
+use Livewire\Component;
+
+class Purchase extends Component
+{
+    public Subscription $subscription;
+
+    public string $db;
+
+    public int $step = 0;
+
+    public array $steps = [
+        Setup::class,
+        Authentication::class,
+        RFF::class,
+        Example::class,
+    ];
+
+    public array $context = [];
+
+    #[On('purchase.context')]
+    public function handleContext(string $property, $value): void
+    {
+        $this->context[$property] = $value;
+    }
+
+    #[On('purchase.next')]
+    public function handleNext(): void
+    {
+        if ($this->step < count($this->steps) - 1) {
+            $this->step++;
+        }
+    }
+
+    #[On('purchase.forward')]
+    public function handleForward(string $component): void
+    {
+        $this->step = array_search($component, $this->steps);
+    }
+
+    #[Computed()]
+    public function component(): string
+    {
+        return $this->steps[$this->step];
+    }
+
+    public function mount()
+    {
+        MultiDB::setDb($this->db);
+
+        $this->context = [
+            'quantity' => 1,
+        ];
+    }
+
+    public function render()
+    {
+        return view('billing-portal.v3.purchase');
+    }
+}