Scope monthly invoice split endpoint

services/nginx/app/routes/orderInvoicesRoute.php

@@ -612,6 +612,31 @@ class orderInvoicesRoute
                     $preview ? 'User previewed splitting collected order invoices by month' : 'User split collected order invoices by order month'
                 );
 
+                $invoice_collection_ids = [];
+                if (self::isParametersSet(['invoice_collection_ids'])) {
+                    $invoice_collection_ids_raw = self::getParameter('invoice_collection_ids');
+                    if (!is_array($invoice_collection_ids_raw)) {
+                        $response->error('invoice_collection_ids must be an array', 400);
+                    }
+
+                    foreach ($invoice_collection_ids_raw as $invoice_collection_id_raw) {
+                        if (is_array($invoice_collection_id_raw) || is_object($invoice_collection_id_raw) || !is_numeric($invoice_collection_id_raw)) {
+                            $response->error('invoice_collection_ids must contain only positive integer ids', 400);
+                        }
+
+                        $invoice_collection_id = (int)$invoice_collection_id_raw;
+                        if ($invoice_collection_id < 1 || $invoice_collection_id > 999999999) {
+                            $response->error('invoice_collection_ids must contain only positive integer ids', 400);
+                        }
+
+                        $invoice_collection_ids[] = $invoice_collection_id;
+                    }
+
+                    $invoice_collection_ids = array_values(array_unique($invoice_collection_ids));
+                    if (empty($invoice_collection_ids)) {
+                        $response->error('invoice_collection_ids must contain at least one id', 400);
+                    }
+                } else {
                     $date_from = $db->escape_string($date_range['dateFrom']);
                     $date_to = $db->escape_string($date_range['dateTo']);
                     $sql = "SELECT DISTINCT invoice_collection_id
@@ -621,13 +646,13 @@ class orderInvoicesRoute
                             AND invoice_collection_id > 0
                             AND deleted_at IS NULL";
                     $query_result = $db->query($sql);
-                $invoice_collection_ids = [];
                     while ($row = $query_result->fetch_assoc()) {
                         $invoice_collection_id = (int)($row['invoice_collection_id'] ?? 0);
                         if ($invoice_collection_id > 0) {
                             $invoice_collection_ids[] = $invoice_collection_id;
                         }
                     }
+                }
 
                 $items = [];
                 $changed = [];

services/nginx/app/tests/Api/CollectedInvoiceMonthlySplitApiTest.php

@@ -85,6 +85,65 @@ it('previews monthly split changes without moving orders or creating collections
         ->and(monthly_split_order_collection_id((int)$aprilOrder['id']))->toBe((int)$invoiceCollection['id']);
 });
 
+it('previews only explicit monthly split invoice collection ids', function (): void {
+    api_test_covers('POST /collected-invoices/split-by-month', 'preview-scope');
+
+    $customer = api_fixtures()->createUser(['display_name' => 'Scoped Preview Monthly Split Customer']);
+    $department = api_fixtures()->createDepartment();
+    $targetCollection = api_fixtures()->createInvoiceCollection([
+        'customer_number' => $customer['customer_number'],
+    ]);
+    $ignoredCollection = api_fixtures()->createInvoiceCollection([
+        'customer_number' => $customer['customer_number'],
+    ]);
+    $targetMarchOrder = api_fixtures()->createOrder([
+        'customer_id' => $customer['customer_number'],
+        'department_id' => $department['id'],
+        'invoice_collection_id' => $targetCollection['id'],
+        'created_at' => '2096-03-15 10:00:00',
+    ]);
+    $targetAprilOrder = api_fixtures()->createOrder([
+        'customer_id' => $customer['customer_number'],
+        'department_id' => $department['id'],
+        'invoice_collection_id' => $targetCollection['id'],
+        'created_at' => '2096-04-02 10:00:00',
+    ]);
+    $ignoredMarchOrder = api_fixtures()->createOrder([
+        'customer_id' => $customer['customer_number'],
+        'department_id' => $department['id'],
+        'invoice_collection_id' => $ignoredCollection['id'],
+        'created_at' => '2096-03-16 10:00:00',
+    ]);
+    $ignoredAprilOrder = api_fixtures()->createOrder([
+        'customer_id' => $customer['customer_number'],
+        'department_id' => $department['id'],
+        'invoice_collection_id' => $ignoredCollection['id'],
+        'created_at' => '2096-04-03 10:00:00',
+    ]);
+    $session = api_fixtures()->createUserSession(['split_collected_invoice']);
+
+    $response = api_client()->post('/collected-invoices/split-by-month', [
+        'dateFrom' => '2096-03-01',
+        'dateTo' => '2096-04-30',
+        'invoice_collection_ids' => [$targetCollection['id']],
+        'preview' => true,
+    ], $session['headers']);
+
+    $response
+        ->assertStatus(200)
+        ->assertEnvelope()
+        ->assertSuccess();
+
+    $payload = $response->data();
+    expect($payload['processed_count'] ?? null)->toBe(1)
+        ->and($payload['changed_count'] ?? null)->toBe(1)
+        ->and($payload['changed'][0]['invoice_collection_id'] ?? null)->toBe((int)$targetCollection['id'])
+        ->and(monthly_split_order_collection_id((int)$targetMarchOrder['id']))->toBe((int)$targetCollection['id'])
+        ->and(monthly_split_order_collection_id((int)$targetAprilOrder['id']))->toBe((int)$targetCollection['id'])
+        ->and(monthly_split_order_collection_id((int)$ignoredMarchOrder['id']))->toBe((int)$ignoredCollection['id'])
+        ->and(monthly_split_order_collection_id((int)$ignoredAprilOrder['id']))->toBe((int)$ignoredCollection['id']);
+});
+
 it('splits a selected March and April collected invoice into monthly collections', function (): void {
     api_test_covers('POST /collected-invoices/split-by-month', 'happy');
 
@@ -139,6 +198,74 @@ it('splits a selected March and April collected invoice into monthly collections
     }
 });
 
+it('splits only explicit monthly split invoice collection ids', function (): void {
+    api_test_covers('POST /collected-invoices/split-by-month', 'scope');
+
+    $customer = api_fixtures()->createUser(['display_name' => 'Scoped Monthly Split Customer']);
+    $department = api_fixtures()->createDepartment();
+    $targetCollection = api_fixtures()->createInvoiceCollection([
+        'customer_number' => $customer['customer_number'],
+        'created_at' => '2096-03-01 00:00:01',
+    ]);
+    $ignoredCollection = api_fixtures()->createInvoiceCollection([
+        'customer_number' => $customer['customer_number'],
+        'created_at' => '2096-03-01 00:00:01',
+    ]);
+    $targetMarchOrder = api_fixtures()->createOrder([
+        'customer_id' => $customer['customer_number'],
+        'department_id' => $department['id'],
+        'invoice_collection_id' => $targetCollection['id'],
+        'created_at' => '2096-03-15 10:00:00',
+    ]);
+    $targetAprilOrder = api_fixtures()->createOrder([
+        'customer_id' => $customer['customer_number'],
+        'department_id' => $department['id'],
+        'invoice_collection_id' => $targetCollection['id'],
+        'created_at' => '2096-04-02 10:00:00',
+    ]);
+    $ignoredMarchOrder = api_fixtures()->createOrder([
+        'customer_id' => $customer['customer_number'],
+        'department_id' => $department['id'],
+        'invoice_collection_id' => $ignoredCollection['id'],
+        'created_at' => '2096-03-16 10:00:00',
+    ]);
+    $ignoredAprilOrder = api_fixtures()->createOrder([
+        'customer_id' => $customer['customer_number'],
+        'department_id' => $department['id'],
+        'invoice_collection_id' => $ignoredCollection['id'],
+        'created_at' => '2096-04-03 10:00:00',
+    ]);
+    $session = api_fixtures()->createUserSession(['split_collected_invoice']);
+    $createdCollectionIds = [];
+
+    try {
+        $response = api_client()->post('/collected-invoices/split-by-month', [
+            'dateFrom' => '2096-03-01',
+            'dateTo' => '2096-04-30',
+            'invoice_collection_ids' => [$targetCollection['id']],
+        ], $session['headers']);
+
+        $response
+            ->assertStatus(200)
+            ->assertEnvelope()
+            ->assertSuccess();
+
+        $payload = $response->data();
+        $createdCollectionIds = (array)($payload['changed'][0]['created_invoice_collection_ids'] ?? []);
+        $aprilCollectionId = (int)($createdCollectionIds[0] ?? 0);
+
+        expect($payload['processed_count'] ?? null)->toBe(1)
+            ->and($payload['changed_count'] ?? null)->toBe(1)
+            ->and($aprilCollectionId)->toBeGreaterThan(0)
+            ->and(monthly_split_order_collection_id((int)$targetMarchOrder['id']))->toBe((int)$targetCollection['id'])
+            ->and(monthly_split_order_collection_id((int)$targetAprilOrder['id']))->toBe($aprilCollectionId)
+            ->and(monthly_split_order_collection_id((int)$ignoredMarchOrder['id']))->toBe((int)$ignoredCollection['id'])
+            ->and(monthly_split_order_collection_id((int)$ignoredAprilOrder['id']))->toBe((int)$ignoredCollection['id']);
+    } finally {
+        monthly_split_cleanup_collections($createdCollectionIds);
+    }
+});
+
 it('sets closed_at to month end when split month has ended', function (): void {
     api_test_covers('POST /collected-invoices/split-by-month', 'closed-at');
 
@@ -345,3 +472,27 @@ it('rejects invalid monthly split date ranges', function (): void {
         ->assertEnvelope()
         ->assertSuccess(false);
 });
+
+it('rejects invalid explicit monthly split invoice collection ids', function (): void {
+    api_test_covers('POST /collected-invoices/split-by-month', 'invalid-scope');
+
+    $session = api_fixtures()->createUserSession(['split_collected_invoice']);
+
+    api_client()->post('/collected-invoices/split-by-month', [
+        'dateFrom' => '2096-03-01',
+        'dateTo' => '2096-04-30',
+        'invoice_collection_ids' => ['not-a-number'],
+    ], $session['headers'])
+        ->assertStatus(400)
+        ->assertEnvelope()
+        ->assertSuccess(false);
+
+    api_client()->post('/collected-invoices/split-by-month', [
+        'dateFrom' => '2096-03-01',
+        'dateTo' => '2096-04-30',
+        'invoice_collection_ids' => [],
+    ], $session['headers'])
+        ->assertStatus(400)
+        ->assertEnvelope()
+        ->assertSuccess(false);
+});