feat(sales): fresh sales implementation

app/Domains/Sales/Http/Requests/DeleteInvoiceRequest.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Domains\Sales\Http\Requests;
+
+use App\Domains\Sales\Models\Invoice;
+use App\Rules\CreditNoteDeletedTogether;
+use App\Rules\RelationNotExist;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+/**
+ * Payload of the bulk invoice removal endpoint: a list of ids, each of which
+ * has to name a real invoice that nothing is still hanging off. Company scoping
+ * is applied by the controller when it resolves the ids, not here.
+ */
+class DeleteInvoiceRequest extends FormRequest
+{
+    /**
+     * The ability is checked in the controller.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * An id survives validation when the invoice exists, carries no payment,
+     * and takes any credit note written against it along in the same batch.
+     *
+     * @return array<string, mixed>
+     */
+    public function rules(): array
+    {
+        $batch = (array) $this->input('ids', []);
+
+        return [
+            'ids' => 'required',
+            'ids.*' => [
+                'required',
+                Rule::exists('invoices', 'id'),
+                new RelationNotExist(Invoice::class, 'payments'),
+                new CreditNoteDeletedTogether($batch),
+            ],
+        ];
+    }
+}