Extract AdminUser class that enforces invariants

framework/core/src/Install/AdminUser.php

@@ -0,0 +1,58 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Install;
+
+use Carbon\Carbon;
+use Illuminate\Hashing\BcryptHasher;
+
+class AdminUser
+{
+    private $username;
+    private $password;
+    private $email;
+
+    public function __construct($username, $password, $email)
+    {
+        $this->username = $username;
+        $this->password = $password;
+        $this->email = $email;
+
+        $this->validate();
+    }
+
+    public function getUsername()
+    {
+        return $this->username;
+    }
+
+    public function getAttributes(): array
+    {
+        return [
+            'username' => $this->username,
+            'email' => $this->email,
+            'password' => (new BcryptHasher)->make($this->password),
+            'joined_at' => Carbon::now(),
+            'is_email_confirmed' => 1,
+        ];
+    }
+
+    private function validate()
+    {
+        if (! filter_var($this->email, FILTER_VALIDATE_EMAIL)) {
+            throw new ValidationFailed('You must enter a valid email.');
+        }
+
+        if (! $this->username || preg_match('/[^a-z0-9_-]/i', $this->username)) {
+            throw new ValidationFailed('Username can only contain letters, numbers, underscores, and dashes.');
+        }
+    }
+}

framework/core/src/Install/Console/DataProviderInterface.php

@@ -11,13 +11,15 @@
 
 namespace Flarum\Install\Console;
 
+use Flarum\Install\AdminUser;
+
 interface DataProviderInterface
 {
     public function getDatabaseConfiguration();
 
     public function getBaseUrl();
 
-    public function getAdminUser();
+    public function getAdminUser(): AdminUser;
 
     public function getSettings();
 

framework/core/src/Install/Console/FileDataProvider.php

@@ -12,6 +12,7 @@
 namespace Flarum\Install\Console;
 
 use Exception;
+use Flarum\Install\AdminUser;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Yaml\Yaml;
 
@@ -72,13 +73,13 @@ class FileDataProvider implements DataProviderInterface
         return $this->baseUrl ?? 'http://flarum.local';
     }
 
-    public function getAdminUser()
+    public function getAdminUser(): AdminUser
     {
-        return $this->adminUser + [
-            'username'              => 'admin',
-            'password'              => 'password',
-            'email'                 => 'admin@example.com',
-        ];
+        return new AdminUser(
+            $this->adminUser['username'] ?? 'admin',
+            $this->adminUser['password'] ?? 'password',
+            $this->adminUser['email'] ?? 'admin@example.com'
+        );
     }
 
     public function getSettings()

framework/core/src/Install/Console/InstallCommand.php

@@ -118,24 +118,13 @@ class InstallCommand extends AbstractCommand
                     $validation->getMessageBag()->toArray())));
         }
 
-        $admin = $this->dataSource->getAdminUser();
-
-        if (! filter_var($admin['email'], FILTER_VALIDATE_EMAIL)) {
-            throw new Exception('You must enter a valid email.');
-        }
-
-        if (! $admin['username'] || preg_match('/[^a-z0-9_-]/i',
-                $admin['username'])) {
-            throw new Exception('Username can only contain letters, numbers, underscores, and dashes.');
-        }
-
         $this->runPipeline(
             $this->installation
                 ->configPath($this->input->getOption('config'))
                 ->debugMode($this->dataSource->isDebugMode())
                 ->baseUrl($this->dataSource->getBaseUrl())
                 ->databaseConfig($dbConfig)
-                ->adminUser($admin)
+                ->adminUser($this->dataSource->getAdminUser())
                 ->settings($this->dataSource->getSettings())
                 ->build()
         );

framework/core/src/Install/Console/UserDataProvider.php

@@ -11,6 +11,7 @@
 
 namespace Flarum\Install\Console;
 
+use Flarum\Install\AdminUser;
 use Symfony\Component\Console\Helper\QuestionHelper;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -61,13 +62,13 @@ class UserDataProvider implements DataProviderInterface
         return $this->baseUrl = rtrim($this->ask('Base URL:'), '/');
     }
 
-    public function getAdminUser()
+    public function getAdminUser(): AdminUser
     {
-        return [
-            'username' => $this->ask('Admin username:'),
-            'password' => $this->askForAdminPassword(),
-            'email'    => $this->ask('Admin email address:'),
-        ];
+        return new AdminUser(
+            $this->ask('Admin username:'),
+            $this->askForAdminPassword(),
+            $this->ask('Admin email address:')
+        );
     }
 
     private function askForAdminPassword()

framework/core/src/Install/Controller/InstallController.php

@@ -12,6 +12,7 @@
 namespace Flarum\Install\Controller;
 
 use Flarum\Http\SessionAuthenticator;
+use Flarum\Install\AdminUser;
 use Flarum\Install\Installation;
 use Flarum\Install\StepFailed;
 use Flarum\Install\ValidationFailed;
@@ -75,11 +76,7 @@ class InstallController implements RequestHandlerInterface
                     'prefix' => array_get($input, 'tablePrefix'),
                     'strict' => false,
                 ])
-                ->adminUser([
-                    'username' => array_get($input, 'adminUsername'),
-                    'password' => $this->getConfirmedAdminPassword($input),
-                    'email' => array_get($input, 'adminEmail'),
-                ])
+                ->adminUser($this->makeAdminUser($input))
                 ->settings([
                     'forum_title' => array_get($input, 'forumTitle'),
                     'mail_from' => 'noreply@'.preg_replace('/^www\./i', '', parse_url($baseUrl, PHP_URL_HOST)),
@@ -102,7 +99,21 @@ class InstallController implements RequestHandlerInterface
         return new Response\EmptyResponse;
     }
 
-    private function getConfirmedAdminPassword(array $input)
+    /**
+     * @param array $input
+     * @return AdminUser
+     * @throws ValidationFailed
+     */
+    private function makeAdminUser(array $input): AdminUser
+    {
+        return new AdminUser(
+            array_get($input, 'adminUsername'),
+            $this->getConfirmedAdminPassword($input),
+            array_get($input, 'adminEmail')
+        );
+    }
+
+    private function getConfirmedAdminPassword(array $input): string
     {
         $password = array_get($input, 'adminPassword');
         $confirmation = array_get($input, 'adminPasswordConfirmation');

framework/core/src/Install/Installation.php

@@ -22,7 +22,9 @@ class Installation
     private $dbConfig = [];
     private $baseUrl;
     private $customSettings = [];
-    private $adminUser = [];
+
+    /** @var AdminUser */
+    private $adminUser;
 
     // A few instance variables to persist objects between steps.
     // Could also be local variables in build(), but this way
@@ -73,7 +75,7 @@ class Installation
         return $this;
     }
 
-    public function adminUser($admin)
+    public function adminUser(AdminUser $admin)
     {
         $this->adminUser = $admin;
 

framework/core/src/Install/Steps/CreateAdminUser.php

@@ -11,11 +11,10 @@
 
 namespace Flarum\Install\Steps;
 
-use Carbon\Carbon;
 use Flarum\Group\Group;
+use Flarum\Install\AdminUser;
 use Flarum\Install\Step;
 use Illuminate\Database\ConnectionInterface;
-use Illuminate\Hashing\BcryptHasher;
 
 class CreateAdminUser implements Step
 {
@@ -25,11 +24,11 @@ class CreateAdminUser implements Step
     private $database;
 
     /**
-     * @var array
+     * @var AdminUser
      */
     private $admin;
 
-    public function __construct(ConnectionInterface $database, array $admin)
+    public function __construct(ConnectionInterface $database, AdminUser $admin)
     {
         $this->database = $database;
         $this->admin = $admin;
@@ -37,18 +36,14 @@ class CreateAdminUser implements Step
 
     public function getMessage()
     {
-        return 'Creating admin user '.$this->admin['username'];
+        return 'Creating admin user '.$this->admin->getUsername();
     }
 
     public function run()
     {
-        $uid = $this->database->table('users')->insertGetId([
-            'username' => $this->admin['username'],
-            'email' => $this->admin['email'],
-            'password' => (new BcryptHasher)->make($this->admin['password']),
-            'joined_at' => Carbon::now(),
-            'is_email_confirmed' => 1,
-        ]);
+        $uid = $this->database->table('users')->insertGetId(
+            $this->admin->getAttributes()
+        );
 
         $this->database->table('group_user')->insert([
             'user_id' => $uid,