Add "about" paths.

app/Api/V1/Controllers/System/AboutController.php

@@ -0,0 +1,84 @@
+<?php
+
+/*
+ * AboutController.php
+ * Copyright (c) 2021 james@firefly-iii.org
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+namespace FireflyIII\Api\V1\Controllers\System;
+
+use DB;
+use FireflyIII\Api\V1\Controllers\Controller;
+use FireflyIII\Transformers\UserTransformer;
+use Illuminate\Http\JsonResponse;
+use League\Fractal\Resource\Item;
+
+/**
+ * Returns basic information about this installation.
+ *
+ * @codeCoverageIgnore
+ * Class AboutController.
+ */
+class AboutController extends Controller
+{
+    /**
+     * Returns system information.
+     *
+     * @return JsonResponse
+     */
+    public function about(): JsonResponse
+    {
+        $search        = ['~', '#'];
+        $replace       = ['\~', '# '];
+        $phpVersion    = str_replace($search, $replace, PHP_VERSION);
+        $phpOs         = str_replace($search, $replace, PHP_OS);
+        $currentDriver = DB::getDriverName();
+
+
+        $data
+            = [
+            'version'     => config('firefly.version'),
+            'api_version' => config('firefly.api_version'),
+            'php_version' => $phpVersion,
+            'os'          => $phpOs,
+            'driver'      => $currentDriver,
+        ];
+
+        return response()->json(['data' => $data])->header('Content-Type', self::CONTENT_TYPE);
+    }
+
+    /**
+     * Returns information about the user.
+     *
+     * @return JsonResponse
+     */
+    public function user(): JsonResponse
+    {
+        $manager = $this->getManager();
+
+        /** @var UserTransformer $transformer */
+        $transformer = app(UserTransformer::class);
+        $transformer->setParameters($this->parameters);
+
+        $resource = new Item(auth()->user(), $transformer, 'users');
+
+        return response()->json($manager->createData($resource)->toArray())->header('Content-Type', self::CONTENT_TYPE);
+    }
+}