Initial PHP project structure

src/Controllers/Controller.php

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+<?php
+
+namespace BitGoblin\Overseer\Controllers;
+
+use Psr\Container\ContainerInterface;
+
+class Controller {
+
+  protected $container;
+
+  public function __construct(ContainerInterface $container) {
+    $this->container = $container;
+  }
+
+  public function get(string $name) {
+    return $this->container->get($name);
+  }
+
+}

src/Controllers/HomeController.php

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+<?php
+
+namespace BitGoblin\Overseer\Controllers;
+
+use Psr\Http\Message\ResponseInterface as Response;
+use Psr\Http\Message\ServerRequestInterface as Request;
+use Slim\Views\Twig;
+
+class HomeController extends Controller {
+
+  public function getIndex(Request $request, Response $response): Response {
+    $view = Twig::fromRequest($request);
+    return $view->render($response, 'index.twig');
+  }
+
+}

src/app.php

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+<?php
+
+use DI\Container;
+use Slim\Factory\AppFactory;
+use Slim\Views\Twig;
+use Slim\Views\TwigMiddleware;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+// Create new container object and add our config object to it
+$container = new Container();
+
+// Set container to create App with on AppFactory
+AppFactory::setContainer($container);
+$app = AppFactory::create();
+
+// create Twig instance
+$twig = Twig::create('views', ['cache' => false]);
+// add Twig-View Middleware
+$app->add(TwigMiddleware::create($app, $twig));
+
+// load routes
+require_once __DIR__ . '/routes.php';
+
+// app starts in public/index.php

src/routes.php

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+<?php
+
+use Psr\Http\Message\ResponseInterface as Response;
+use Psr\Http\Message\ServerRequestInterface as Request;
+
+// index GET route - this page should welcome the user and direct them to the available actions
+$app->get('/', '\\BitGoblin\\Overseer\\Controllers\\HomeController:getIndex')->setName('index');