Add web cron ability #821 (#1073)

* Use database for kvp storage

* Read kvpstore

* Add web cron ability through API #821

* Style fixes

* Fix text

app/Http/Controllers/Api/MaintenanceController.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Contracts\Controller;
+use App\Exceptions\CronInvalid;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Artisan;
+
+class MaintenanceController extends Controller
+{
+    /**
+     * Run the cron job from the web
+     *
+     * @param Request $request
+     * @param string  $id      The ID passed in for the cron
+     *
+     * @return mixed
+     */
+    public function cron(Request $request, string $id)
+    {
+        $cron_id = setting('cron.random_id');
+        if (empty($cron_id) || $id !== $cron_id) {
+            throw new CronInvalid();
+        }
+
+        $output = '';
+        Artisan::call('schedule:run');
+        $output .= trim(Artisan::output());
+
+        return response([
+            'content' => $output,
+        ]);
+    }
+}