Fix api transport mult-line parsing (#13469)

* API transport fix parsing
parse templates after parsing user options, not before

* API transport tests

* fix style and lint

* remove accidental item

* fix more type issues

database/factories/AlertTransportFactory.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\AlertTransport;
+use Illuminate\Database\Eloquent\Factories\Factory;
+use LibreNMS\Alert\Transport;
+
+class AlertTransportFactory extends Factory
+{
+    protected $model = AlertTransport::class;
+
+    public function definition(): array
+    {
+        return [
+            'transport_name' => $this->faker->text(30),
+            'transport_type' => $this->faker->randomElement(Transport::list()),
+            'is_default' => 0,
+            'transport_config' => '',
+        ];
+    }
+
+    public function api(
+        string $options = '',
+        string $method = 'get',
+        string $body = '',
+        string $url = 'https://librenms.org',
+        string $headers = 'test=header',
+        string $username = '',
+        string $password = ''
+    ): AlertTransportFactory {
+        $config = [
+            'api-method' => $method,
+            'api-url' => $url,
+            'api-options' => $options,
+            'api-headers' => $headers,
+            'api-body' => $body,
+            'api-auth-username' => $username,
+            'api-auth-password' => $password,
+        ];
+
+        return $this->state(function () use ($config) {
+            return [
+                'transport_type' => 'api',
+                'transport_config' => $config,
+            ];
+        });
+    }
+}