From f8699990112a633ec269a53919bfd85c6b47bb5d Mon Sep 17 00:00:00 2001
From: Franz Liedke <franz@develophp.org>
Date: Fri, 21 Aug 2020 14:41:45 +0200
Subject: [PATCH 1/3] Add a helper class for managing low-level config

---
 src/Foundation/Config.php            |  75 +++++++++++++
 tests/unit/Foundation/ConfigTest.php | 155 +++++++++++++++++++++++++++
 2 files changed, 230 insertions(+)
 create mode 100644 src/Foundation/Config.php
 create mode 100644 tests/unit/Foundation/ConfigTest.php

diff --git a/src/Foundation/Config.php b/src/Foundation/Config.php
new file mode 100644
index 000000000..e540bedfa
--- /dev/null
+++ b/src/Foundation/Config.php
@@ -0,0 +1,75 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Foundation;
+
+use ArrayAccess;
+use Illuminate\Support\Arr;
+use InvalidArgumentException;
+use Laminas\Diactoros\Uri;
+use Psr\Http\Message\UriInterface;
+use RuntimeException;
+
+class Config implements ArrayAccess
+{
+    private $data;
+
+    public function __construct(array $data)
+    {
+        $this->data = $data;
+
+        $this->requireKeys('url');
+    }
+
+    public function url(): UriInterface
+    {
+        return new Uri(rtrim($this->data['url'], '/'));
+    }
+
+    public function inDebugMode(): bool
+    {
+        return $this->data['debug'] ?? false;
+    }
+
+    public function inMaintenanceMode(): bool
+    {
+        return $this->data['offline'] ?? false;
+    }
+
+    private function requireKeys(...$keys)
+    {
+        foreach ($keys as $key) {
+            if (! array_key_exists($key, $this->data)) {
+                throw new InvalidArgumentException(
+                    "Configuration is invalid without a $key key"
+                );
+            }
+        }
+    }
+
+    public function offsetGet($offset)
+    {
+        return Arr::get($this->data, $offset);
+    }
+
+    public function offsetExists($offset)
+    {
+        return Arr::has($this->data, $offset);
+    }
+
+    public function offsetSet($offset, $value)
+    {
+        throw new RuntimeException('The Config is immutable');
+    }
+
+    public function offsetUnset($offset)
+    {
+        throw new RuntimeException('The Config is immutable');
+    }
+}
diff --git a/tests/unit/Foundation/ConfigTest.php b/tests/unit/Foundation/ConfigTest.php
new file mode 100644
index 000000000..a80acf2b7
--- /dev/null
+++ b/tests/unit/Foundation/ConfigTest.php
@@ -0,0 +1,155 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace Flarum\Tests\unit\Foundation;
+
+use Flarum\Foundation\Config;
+use Flarum\Tests\unit\TestCase;
+use InvalidArgumentException;
+use RuntimeException;
+
+class ConfigTest extends TestCase
+{
+    /** @test */
+    public function it_complains_when_base_url_is_missing()
+    {
+        $this->expectException(InvalidArgumentException::class);
+
+        new Config([]);
+    }
+
+    /** @test */
+    public function it_wraps_base_url_in_value_object()
+    {
+        $config = new Config([
+            'url' => 'https://flarum.local/myforum/',
+        ]);
+
+        $url = $config->url();
+        $this->assertEquals('https', $url->getScheme());
+        $this->assertEquals('/myforum', $url->getPath()); // Note that trailing slashes are removed
+        $this->assertEquals('https://flarum.local/myforum', (string) $url);
+    }
+
+    /** @test */
+    public function it_has_a_helper_for_debug_mode()
+    {
+        $config = new Config([
+            'url' => 'https://flarum.local',
+            'debug' => false,
+        ]);
+
+        $this->assertFalse($config->inDebugMode());
+
+        $config = new Config([
+            'url' => 'https://flarum.local',
+            'debug' => true,
+        ]);
+
+        $this->assertTrue($config->inDebugMode());
+    }
+
+    /** @test */
+    public function it_turns_off_debug_mode_by_default()
+    {
+        $config = new Config([
+            'url' => 'https://flarum.local',
+        ]);
+
+        $this->assertFalse($config->inDebugMode());
+    }
+
+    /** @test */
+    public function it_has_a_helper_for_maintenance_mode()
+    {
+        $config = new Config([
+            'url' => 'https://flarum.local',
+            'offline' => false,
+        ]);
+
+        $this->assertFalse($config->inMaintenanceMode());
+
+        $config = new Config([
+            'url' => 'https://flarum.local',
+            'offline' => true,
+        ]);
+
+        $this->assertTrue($config->inMaintenanceMode());
+    }
+
+    /** @test */
+    public function it_turns_off_maintenance_mode_by_default()
+    {
+        $config = new Config([
+            'url' => 'https://flarum.local',
+        ]);
+
+        $this->assertFalse($config->inMaintenanceMode());
+    }
+
+    /** @test */
+    public function it_exposes_additional_keys_via_array_access()
+    {
+        $config = new Config([
+            'url' => 'https://flarum.local',
+            'custom_a' => 'b',
+        ]);
+
+        $this->assertEquals('b', $config['custom_a']);
+    }
+
+    /** @test */
+    public function it_exposes_nested_keys_via_dot_syntax()
+    {
+        $config = new Config([
+            'url' => 'https://flarum.local',
+            'nested' => [
+                'first' => '1',
+                'second' => '2',
+            ],
+        ]);
+
+        $this->assertEquals('1', $config['nested.first']);
+        $this->assertEquals('2', $config['nested.second']);
+    }
+
+    /** @test */
+    public function it_does_not_allow_mutation_via_array_access()
+    {
+        $config = new Config([
+            'url' => 'https://flarum.local',
+            'custom_a' => 'b',
+        ]);
+
+        try {
+            $config['custom_a'] = 'c';
+        } catch (RuntimeException $_) {
+        }
+
+        // Ensure the value was not changed
+        $this->assertEquals('b', $config['custom_a']);
+    }
+
+    /** @test */
+    public function it_does_not_allow_removal_via_array_access()
+    {
+        $config = new Config([
+            'url' => 'https://flarum.local',
+            'custom_a' => 'b',
+        ]);
+
+        try {
+            unset($config['custom_a']);
+        } catch (RuntimeException $_) {
+        }
+
+        // Ensure the value was not changed
+        $this->assertEquals('b', $config['custom_a']);
+    }
+}

From 6639678fb22188b8a492cd960bc0e4d390efd54a Mon Sep 17 00:00:00 2001
From: Franz Liedke <franz@develophp.org>
Date: Sat, 28 Mar 2020 11:03:19 +0100
Subject: [PATCH 2/3] Inject/use new config class where applicable

---
 src/Admin/AdminServiceProvider.php         |  2 +-
 src/Api/ApiServiceProvider.php             |  2 +-
 src/Api/Serializer/ForumSerializer.php     | 13 +++++++------
 src/Console/ConsoleServiceProvider.php     |  2 ++
 src/Forum/ForumServiceProvider.php         |  2 +-
 src/Foundation/Console/InfoCommand.php     | 13 +++++++------
 src/Foundation/InstalledApp.php            | 20 ++++++--------------
 src/Frontend/Content/Assets.php            | 10 +++++-----
 src/Http/CookieFactory.php                 | 21 ++++++++++-----------
 src/Update/Controller/UpdateController.php | 14 +++++++-------
 10 files changed, 47 insertions(+), 52 deletions(-)

diff --git a/src/Admin/AdminServiceProvider.php b/src/Admin/AdminServiceProvider.php
index 103bd35df..8e8e598f7 100644
--- a/src/Admin/AdminServiceProvider.php
+++ b/src/Admin/AdminServiceProvider.php
@@ -63,7 +63,7 @@ class AdminServiceProvider extends AbstractServiceProvider
         $this->app->bind('flarum.admin.error_handler', function () {
             return new HttpMiddleware\HandleErrors(
                 $this->app->make(Registry::class),
-                $this->app['flarum']->inDebugMode() ? $this->app->make(WhoopsFormatter::class) : $this->app->make(ViewFormatter::class),
+                $this->app['flarum.config']->inDebugMode() ? $this->app->make(WhoopsFormatter::class) : $this->app->make(ViewFormatter::class),
                 $this->app->tagged(Reporter::class)
             );
         });
diff --git a/src/Api/ApiServiceProvider.php b/src/Api/ApiServiceProvider.php
index 4737d2e8c..83b74f1ce 100644
--- a/src/Api/ApiServiceProvider.php
+++ b/src/Api/ApiServiceProvider.php
@@ -59,7 +59,7 @@ class ApiServiceProvider extends AbstractServiceProvider
         $this->app->bind('flarum.api.error_handler', function () {
             return new HttpMiddleware\HandleErrors(
                 $this->app->make(Registry::class),
-                new JsonApiFormatter($this->app['flarum']->inDebugMode()),
+                new JsonApiFormatter($this->app['flarum.config']->inDebugMode()),
                 $this->app->tagged(Reporter::class)
             );
         });
diff --git a/src/Api/Serializer/ForumSerializer.php b/src/Api/Serializer/ForumSerializer.php
index 9fb0b3fa0..65d53b3fa 100644
--- a/src/Api/Serializer/ForumSerializer.php
+++ b/src/Api/Serializer/ForumSerializer.php
@@ -10,6 +10,7 @@
 namespace Flarum\Api\Serializer;
 
 use Flarum\Foundation\Application;
+use Flarum\Foundation\Config;
 use Flarum\Http\UrlGenerator;
 use Flarum\Settings\SettingsRepositoryInterface;
 
@@ -21,9 +22,9 @@ class ForumSerializer extends AbstractSerializer
     protected $type = 'forums';
 
     /**
-     * @var Application
+     * @var Config
      */
-    protected $app;
+    protected $config;
 
     /**
      * @var SettingsRepositoryInterface
@@ -36,13 +37,13 @@ class ForumSerializer extends AbstractSerializer
     protected $url;
 
     /**
-     * @param Application $app
+     * @param Config $config
      * @param SettingsRepositoryInterface $settings
      * @param UrlGenerator $url
      */
-    public function __construct(Application $app, SettingsRepositoryInterface $settings, UrlGenerator $url)
+    public function __construct(Config $config, SettingsRepositoryInterface $settings, UrlGenerator $url)
     {
-        $this->app = $app;
+        $this->config = $config;
         $this->settings = $settings;
         $this->url = $url;
     }
@@ -66,7 +67,7 @@ class ForumSerializer extends AbstractSerializer
             'showLanguageSelector' => (bool) $this->settings->get('show_language_selector', true),
             'baseUrl' => $url = $this->url->to('forum')->base(),
             'basePath' => parse_url($url, PHP_URL_PATH) ?: '',
-            'debug' => $this->app->inDebugMode(),
+            'debug' => $this->config->inDebugMode(),
             'apiUrl' => $this->url->to('api')->base(),
             'welcomeTitle' => $this->settings->get('welcome_title'),
             'welcomeMessage' => $this->settings->get('welcome_message'),
diff --git a/src/Console/ConsoleServiceProvider.php b/src/Console/ConsoleServiceProvider.php
index 674927538..0a6ccb5da 100644
--- a/src/Console/ConsoleServiceProvider.php
+++ b/src/Console/ConsoleServiceProvider.php
@@ -14,6 +14,7 @@ use Flarum\Database\Console\MigrateCommand;
 use Flarum\Database\Console\ResetCommand;
 use Flarum\Foundation\AbstractServiceProvider;
 use Flarum\Foundation\Console\CacheClearCommand;
+use Flarum\Foundation\Console\InfoCommand;
 
 class ConsoleServiceProvider extends AbstractServiceProvider
 {
@@ -26,6 +27,7 @@ class ConsoleServiceProvider extends AbstractServiceProvider
             return [
                 CacheClearCommand::class,
                 GenerateMigrationCommand::class,
+                InfoCommand::class,
                 MigrateCommand::class,
                 ResetCommand::class,
             ];
diff --git a/src/Forum/ForumServiceProvider.php b/src/Forum/ForumServiceProvider.php
index 1903783d6..bbe609fa5 100644
--- a/src/Forum/ForumServiceProvider.php
+++ b/src/Forum/ForumServiceProvider.php
@@ -73,7 +73,7 @@ class ForumServiceProvider extends AbstractServiceProvider
         $this->app->bind('flarum.forum.error_handler', function () {
             return new HttpMiddleware\HandleErrors(
                 $this->app->make(Registry::class),
-                $this->app['flarum']->inDebugMode() ? $this->app->make(WhoopsFormatter::class) : $this->app->make(ViewFormatter::class),
+                $this->app['flarum.config']->inDebugMode() ? $this->app->make(WhoopsFormatter::class) : $this->app->make(ViewFormatter::class),
                 $this->app->tagged(Reporter::class)
             );
         });
diff --git a/src/Foundation/Console/InfoCommand.php b/src/Foundation/Console/InfoCommand.php
index cfe7671f8..a0f8d4773 100644
--- a/src/Foundation/Console/InfoCommand.php
+++ b/src/Foundation/Console/InfoCommand.php
@@ -12,6 +12,7 @@ namespace Flarum\Foundation\Console;
 use Flarum\Console\AbstractCommand;
 use Flarum\Extension\ExtensionManager;
 use Flarum\Foundation\Application;
+use Flarum\Foundation\Config;
 use Symfony\Component\Console\Helper\Table;
 use Symfony\Component\Console\Helper\TableStyle;
 
@@ -23,15 +24,15 @@ class InfoCommand extends AbstractCommand
     protected $extensions;
 
     /**
-     * @var array
+     * @var Config
      */
     protected $config;
 
     /**
      * @param ExtensionManager $extensions
-     * @param array $config
+     * @param Config config
      */
-    public function __construct(ExtensionManager $extensions, array $config)
+    public function __construct(ExtensionManager $extensions, Config $config)
     {
         $this->extensions = $extensions;
         $this->config = $config;
@@ -64,11 +65,11 @@ class InfoCommand extends AbstractCommand
 
         $this->getExtensionTable()->render();
 
-        $this->output->writeln('<info>Base URL:</info> '.$this->config['url']);
+        $this->output->writeln('<info>Base URL:</info> '.$this->config->url());
         $this->output->writeln('<info>Installation path:</info> '.getcwd());
-        $this->output->writeln('<info>Debug mode:</info> '.($this->config['debug'] ? 'ON' : 'off'));
+        $this->output->writeln('<info>Debug mode:</info> '.($this->config->inDebugMode() ? 'ON' : 'off'));
 
-        if ($this->config['debug']) {
+        if ($this->config->inDebugMode()) {
             $this->error(
                 "Don't forget to turn off debug mode! It should never be turned on in a production system."
             );
diff --git a/src/Foundation/InstalledApp.php b/src/Foundation/InstalledApp.php
index bc1e18601..f2a024235 100644
--- a/src/Foundation/InstalledApp.php
+++ b/src/Foundation/InstalledApp.php
@@ -9,7 +9,6 @@
 
 namespace Flarum\Foundation;
 
-use Flarum\Foundation\Console\InfoCommand;
 use Flarum\Http\Middleware\DispatchRoute;
 use Flarum\Settings\SettingsRepositoryInterface;
 use Illuminate\Console\Command;
@@ -112,21 +111,14 @@ class InstalledApp implements AppInterface
      */
     public function getConsoleCommands()
     {
-        $commands = [];
+        return array_map(function ($command) {
+            $command = $this->container->make($command);
 
-        // The info command is a special case, as it requires a config parameter that's only available here.
-        $commands[] = $this->container->make(InfoCommand::class, ['config' => $this->config]);
-
-        foreach ($this->container->make('flarum.console.commands') as $command) {
-            $newCommand = $this->container->make($command);
-
-            if ($newCommand instanceof Command) {
-                $newCommand->setLaravel($this->container);
+            if ($command instanceof Command) {
+                $command->setLaravel($this->container);
             }
 
-            $commands[] = $newCommand;
-        }
-
-        return $commands;
+            return $command;
+        }, $this->container->make('flarum.console.commands'));
     }
 }
diff --git a/src/Frontend/Content/Assets.php b/src/Frontend/Content/Assets.php
index 50681f876..009973165 100644
--- a/src/Frontend/Content/Assets.php
+++ b/src/Frontend/Content/Assets.php
@@ -9,7 +9,7 @@
 
 namespace Flarum\Frontend\Content;
 
-use Flarum\Foundation\Application;
+use Flarum\Foundation\Config;
 use Flarum\Frontend\Compiler\CompilerInterface;
 use Flarum\Frontend\Document;
 use Illuminate\Contracts\Container\Container;
@@ -19,17 +19,17 @@ use Psr\Http\Message\ServerRequestInterface as Request;
 class Assets
 {
     protected $container;
-    protected $app;
+    protected $config;
 
     /**
      * @var \Flarum\Frontend\Assets
      */
     protected $assets;
 
-    public function __construct(Container $container, Application $app)
+    public function __construct(Container $container, Config $config)
     {
         $this->container = $container;
-        $this->app = $app;
+        $this->config = $config;
     }
 
     public function forFrontend(string $name)
@@ -48,7 +48,7 @@ class Assets
             'css' => [$this->assets->makeCss(), $this->assets->makeLocaleCss($locale)]
         ];
 
-        if ($this->app->inDebugMode()) {
+        if ($this->config->inDebugMode()) {
             $this->commit(Arr::flatten($compilers));
         }
 
diff --git a/src/Http/CookieFactory.php b/src/Http/CookieFactory.php
index 4a9eff3a3..5c36cb39b 100644
--- a/src/Http/CookieFactory.php
+++ b/src/Http/CookieFactory.php
@@ -11,8 +11,7 @@ namespace Flarum\Http;
 
 use Dflydev\FigCookies\Modifier\SameSite;
 use Dflydev\FigCookies\SetCookie;
-use Flarum\Foundation\Application;
-use Illuminate\Support\Arr;
+use Flarum\Foundation\Config;
 
 class CookieFactory
 {
@@ -52,19 +51,19 @@ class CookieFactory
     protected $samesite;
 
     /**
-     * @param Application $app
+     * @param Config $config
      */
-    public function __construct(Application $app)
+    public function __construct(Config $config)
     {
-        // Parse the forum's base URL so that we can determine the optimal cookie settings
-        $url = parse_url(rtrim($app->url(), '/'));
+        // If necessary, we will use the forum's base URL to determine smart defaults for cookie settings
+        $url = $config->url();
 
         // Get the cookie settings from the config or use the default values
-        $this->prefix = $app->config('cookie.name', 'flarum');
-        $this->path = $app->config('cookie.path', Arr::get($url, 'path') ?: '/');
-        $this->domain = $app->config('cookie.domain');
-        $this->secure = $app->config('cookie.secure', Arr::get($url, 'scheme') === 'https');
-        $this->samesite = $app->config('cookie.samesite');
+        $this->prefix = $config['cookie.name'] ?? 'flarum';
+        $this->path = $config['cookie.path'] ?? $url->getPath() ?: '/';
+        $this->domain = $config['cookie.domain'];
+        $this->secure = $config['cookie.secure'] ?? $url->getScheme() === 'https';
+        $this->samesite = $config['cookie.samesite'];
     }
 
     /**
diff --git a/src/Update/Controller/UpdateController.php b/src/Update/Controller/UpdateController.php
index 4668fcebb..5b5bf4959 100644
--- a/src/Update/Controller/UpdateController.php
+++ b/src/Update/Controller/UpdateController.php
@@ -11,7 +11,7 @@ namespace Flarum\Update\Controller;
 
 use Exception;
 use Flarum\Database\Console\MigrateCommand;
-use Flarum\Foundation\Application;
+use Flarum\Foundation\Config;
 use Illuminate\Support\Arr;
 use Laminas\Diactoros\Response;
 use Laminas\Diactoros\Response\HtmlResponse;
@@ -26,18 +26,18 @@ class UpdateController implements RequestHandlerInterface
     protected $command;
 
     /**
-     * @var Application
+     * @var Config
      */
-    protected $app;
+    protected $config;
 
     /**
      * @param MigrateCommand $command
-     * @param Application $app
+     * @param Config $config
      */
-    public function __construct(MigrateCommand $command, Application $app)
+    public function __construct(MigrateCommand $command, Config $config)
     {
         $this->command = $command;
-        $this->app = $app;
+        $this->config = $config;
     }
 
     /**
@@ -48,7 +48,7 @@ class UpdateController implements RequestHandlerInterface
     {
         $input = $request->getParsedBody();
 
-        if (Arr::get($input, 'databasePassword') !== $this->app->config('database.password')) {
+        if (Arr::get($input, 'databasePassword') !== $this->config['database.password']) {
             return new HtmlResponse('Incorrect database password.', 500);
         }
 

From 9ea57e6329da9abcd3df482e8904ac790fb9086e Mon Sep 17 00:00:00 2001
From: Franz Liedke <franz@develophp.org>
Date: Fri, 21 Aug 2020 18:21:33 +0200
Subject: [PATCH 3/3] Use Config class for data from config.php

---
 src/Foundation/Application.php     | 16 +++++-----------
 src/Foundation/InstalledApp.php    | 13 ++++---------
 src/Foundation/InstalledSite.php   |  7 ++++---
 src/Foundation/Site.php            | 16 ++++++++--------
 src/Foundation/UninstalledSite.php | 13 ++++++++++---
 tests/integration/TestCase.php     |  3 ++-
 6 files changed, 33 insertions(+), 35 deletions(-)

diff --git a/src/Foundation/Application.php b/src/Foundation/Application.php
index 7463b2f50..ffc350256 100644
--- a/src/Foundation/Application.php
+++ b/src/Foundation/Application.php
@@ -95,7 +95,9 @@ class Application
      */
     public function config($key, $default = null)
     {
-        return Arr::get($this->container->make('flarum.config'), $key, $default);
+        $config = $this->container->make('flarum.config');
+
+        return $config[$key] ?? $default;
     }
 
     /**
@@ -117,18 +119,10 @@ class Application
     public function url($path = null)
     {
         $config = $this->container->make('flarum.config');
-        $url = Arr::get($config, 'url', Arr::get($_SERVER, 'REQUEST_URI'));
-
-        if (is_array($url)) {
-            if (isset($url[$path])) {
-                return $url[$path];
-            }
-
-            $url = $url['base'];
-        }
+        $url = (string) $config->url();
 
         if ($path) {
-            $url .= '/'.Arr::get($config, "paths.$path", $path);
+            $url .= '/'.($config["paths.$path"] ?? $path);
         }
 
         return $url;
diff --git a/src/Foundation/InstalledApp.php b/src/Foundation/InstalledApp.php
index f2a024235..705156292 100644
--- a/src/Foundation/InstalledApp.php
+++ b/src/Foundation/InstalledApp.php
@@ -27,11 +27,11 @@ class InstalledApp implements AppInterface
     protected $container;
 
     /**
-     * @var array
+     * @var Config
      */
     protected $config;
 
-    public function __construct(Container $container, array $config)
+    public function __construct(Container $container, Config $config)
     {
         $this->container = $container;
         $this->config = $config;
@@ -47,7 +47,7 @@ class InstalledApp implements AppInterface
      */
     public function getRequestHandler()
     {
-        if ($this->inMaintenanceMode()) {
+        if ($this->config->inMaintenanceMode()) {
             return new MaintenanceModeHandler();
         } elseif ($this->needsUpdate()) {
             return $this->getUpdaterHandler();
@@ -69,11 +69,6 @@ class InstalledApp implements AppInterface
         return $pipe;
     }
 
-    protected function inMaintenanceMode(): bool
-    {
-        return $this->config['offline'] ?? false;
-    }
-
     protected function needsUpdate(): bool
     {
         $settings = $this->container->make(SettingsRepositoryInterface::class);
@@ -98,7 +93,7 @@ class InstalledApp implements AppInterface
 
     protected function basePath(): string
     {
-        return parse_url($this->config['url'], PHP_URL_PATH) ?: '/';
+        return $this->config->url()->getPath() ?: '/';
     }
 
     protected function subPath($pathName): string
diff --git a/src/Foundation/InstalledSite.php b/src/Foundation/InstalledSite.php
index 4f9fbb265..8e944e827 100644
--- a/src/Foundation/InstalledSite.php
+++ b/src/Foundation/InstalledSite.php
@@ -55,7 +55,7 @@ class InstalledSite implements SiteInterface
     protected $paths;
 
     /**
-     * @var array
+     * @var Config
      */
     protected $config;
 
@@ -64,7 +64,7 @@ class InstalledSite implements SiteInterface
      */
     protected $extenders = [];
 
-    public function __construct(Paths $paths, array $config)
+    public function __construct(Paths $paths, Config $config)
     {
         $this->paths = $paths;
         $this->config = $config;
@@ -101,7 +101,8 @@ class InstalledSite implements SiteInterface
 
         $container->instance('env', 'production');
         $container->instance('flarum.config', $this->config);
-        $container->instance('flarum.debug', $laravel->inDebugMode());
+        $container->alias('flarum.config', Config::class);
+        $container->instance('flarum.debug', $this->config->inDebugMode());
         $container->instance('config', $config = $this->getIlluminateConfig($laravel));
 
         $this->registerLogger($container);
diff --git a/src/Foundation/Site.php b/src/Foundation/Site.php
index 8c118196d..c77868467 100644
--- a/src/Foundation/Site.php
+++ b/src/Foundation/Site.php
@@ -24,13 +24,13 @@ class Site
 
         date_default_timezone_set('UTC');
 
-        if (static::hasConfigFile($paths->base)) {
-            return (
-                new InstalledSite($paths, static::loadConfig($paths->base))
-            )->extendWith(static::loadExtenders($paths->base));
-        } else {
-            return new UninstalledSite($paths);
+        if (! static::hasConfigFile($paths->base)) {
+            return new UninstalledSite($paths, $_SERVER['REQUEST_URI']);
         }
+
+        return (
+            new InstalledSite($paths, static::loadConfig($paths->base))
+        )->extendWith(static::loadExtenders($paths->base));
     }
 
     protected static function hasConfigFile($basePath)
@@ -38,7 +38,7 @@ class Site
         return file_exists("$basePath/config.php");
     }
 
-    protected static function loadConfig($basePath): array
+    protected static function loadConfig($basePath): Config
     {
         $config = include "$basePath/config.php";
 
@@ -46,7 +46,7 @@ class Site
             throw new RuntimeException('config.php should return an array');
         }
 
-        return $config;
+        return new Config($config);
     }
 
     protected static function loadExtenders($basePath): array
diff --git a/src/Foundation/UninstalledSite.php b/src/Foundation/UninstalledSite.php
index ac1ed279b..17ed2be1e 100644
--- a/src/Foundation/UninstalledSite.php
+++ b/src/Foundation/UninstalledSite.php
@@ -35,9 +35,15 @@ class UninstalledSite implements SiteInterface
      */
     protected $paths;
 
-    public function __construct(Paths $paths)
+    /**
+     * @var string
+     */
+    private $baseUrl;
+
+    public function __construct(Paths $paths, string $baseUrl)
     {
         $this->paths = $paths;
+        $this->baseUrl = $baseUrl;
     }
 
     /**
@@ -58,8 +64,9 @@ class UninstalledSite implements SiteInterface
         $laravel = new Application($container, $this->paths);
 
         $container->instance('env', 'production');
-        $container->instance('flarum.config', []);
-        $container->instance('flarum.debug', $laravel->inDebugMode());
+        $container->instance('flarum.config', new Config(['url' => $this->baseUrl]));
+        $container->alias('flarum.config', Config::class);
+        $container->instance('flarum.debug', true);
         $container->instance('config', $config = $this->getIlluminateConfig());
 
         $this->registerLogger($container);
diff --git a/tests/integration/TestCase.php b/tests/integration/TestCase.php
index d7253f45c..16a65f07e 100644
--- a/tests/integration/TestCase.php
+++ b/tests/integration/TestCase.php
@@ -10,6 +10,7 @@
 namespace Flarum\Tests\integration;
 
 use Flarum\Extend\ExtenderInterface;
+use Flarum\Foundation\Config;
 use Flarum\Foundation\InstalledSite;
 use Flarum\Foundation\Paths;
 use Illuminate\Database\ConnectionInterface;
@@ -40,7 +41,7 @@ abstract class TestCase extends \PHPUnit\Framework\TestCase
                     'public' => __DIR__.'/tmp/public',
                     'storage' => __DIR__.'/tmp/storage',
                 ]),
-                include __DIR__.'/tmp/config.php'
+                new Config(include __DIR__.'/tmp/config.php')
             );
 
             $site->extendWith($this->extenders);