Merge pull request #622 from MyIgel/controllers

AuthController (login, logout), use templating, replaced gettext, input validation

README.md

@@ -14,7 +14,6 @@ To report bugs use [engelsystem/issues](https://github.com/engelsystem/engelsyst
  * PHP >= 7.1
    * Required modules:
      * dom
-     * gettext
      * json
      * mbstring
      * PDO

composer.json

@@ -15,7 +15,6 @@
     ],
     "require": {
         "php": ">=7.1.0",
-        "ext-gettext": "*",
         "ext-json": "*",
         "ext-libxml": "*",
         "ext-mbstring": "*",
@@ -24,6 +23,7 @@
         "ext-xml": "*",
         "doctrine/dbal": "^2.9",
         "erusev/parsedown": "^1.7",
+        "gettext/gettext": "^4.6",
         "illuminate/container": "5.8.*",
         "illuminate/database": "5.8.*",
         "illuminate/support": "5.8.*",
@@ -32,6 +32,7 @@
         "psr/container": "^1.0",
         "psr/http-server-middleware": "^1.0",
         "psr/log": "^1.1",
+        "respect/validation": "^1.1",
         "swiftmailer/swiftmailer": "^6.2",
         "symfony/http-foundation": "^4.3",
         "symfony/psr-http-message-bridge": "^1.2",

config/app.php

@@ -17,7 +17,7 @@ return [
         \Engelsystem\Database\DatabaseServiceProvider::class,
         \Engelsystem\Http\RequestServiceProvider::class,
         \Engelsystem\Http\SessionServiceProvider::class,
-        \Engelsystem\Helpers\TranslationServiceProvider::class,
+        \Engelsystem\Helpers\Translation\TranslationServiceProvider::class,
         \Engelsystem\Http\ResponseServiceProvider::class,
         \Engelsystem\Http\Psr7ServiceProvider::class,
         \Engelsystem\Helpers\AuthenticatorServiceProvider::class,
@@ -25,6 +25,7 @@ return [
         \Engelsystem\Middleware\RouteDispatcherServiceProvider::class,
         \Engelsystem\Middleware\RequestHandlerServiceProvider::class,
         \Engelsystem\Middleware\SessionHandlerServiceProvider::class,
+        \Engelsystem\Http\Validation\ValidationServiceProvider::class,
 
         // Additional services
         \Engelsystem\Mail\MailerServiceProvider::class,

config/config.default.php

@@ -99,13 +99,10 @@ return [
     // Number of hours that an angel has to sign out own shifts
     'last_unsubscribe'        => 3,
 
-    // Define the algorithm to use for `crypt()` of passwords
+    // Define the algorithm to use for `password_verify()`
     // If the user uses an old algorithm the password will be converted to the new format
-    //  MD5         '$1'
-    //  Blowfish    '$2y$13'
-    //  SHA-256     '$5$rounds=5000'
-    //  SHA-512     '$6$rounds=5000'
-    'crypt_alg'               => '$6$rounds=5000',
+    // See https://secure.php.net/manual/en/password.constants.php for a complete list
+    'password_algorithm'      => PASSWORD_DEFAULT,
 
     // The minimum length for passwords
     'min_password_length'     => 8,
@@ -141,12 +138,12 @@ return [
 
     // Available locales in /locale/
     'locales'                 => [
-        'de_DE.UTF-8' => 'Deutsch',
-        'en_US.UTF-8' => 'English',
+        'de_DE' => 'Deutsch',
+        'en_US' => 'English',
     ],
 
     // The default locale to use
-    'default_locale'          => env('DEFAULT_LOCALE', 'en_US.UTF-8'),
+    'default_locale'          => env('DEFAULT_LOCALE', 'en_US'),
 
     // Available T-Shirt sizes, set value to null if not available
     'tshirt_sizes'            => [

config/routes.php

@@ -9,6 +9,8 @@ $route->get('/', 'HomeController@index');
 $route->get('/credits', 'CreditsController@index');
 
 // Authentication
+$route->get('/login', 'AuthController@login');
+$route->post('/login', 'AuthController@postLogin');
 $route->get('/logout', 'AuthController@logout');
 
 // Stats

contrib/Dockerfile

@@ -35,8 +35,8 @@ RUN rm -f /app/import/* /app/config/config.php
 # Build the PHP container
 FROM php:7-fpm-alpine
 WORKDIR /var/www
-RUN apk add --no-cache icu-dev gettext-dev && \
-    docker-php-ext-install intl gettext pdo_mysql
+RUN apk add --no-cache icu-dev && \
+    docker-php-ext-install intl pdo_mysql
 COPY --from=data /app/ /var/www
 RUN chown -R www-data:www-data /var/www/import/ /var/www/storage/ && \
     rm -r /var/www/html

db/migrations/2018_10_01_000000_create_users_tables.php

@@ -28,7 +28,7 @@ class CreateUsersTables extends Migration
 
             $table->string('name', 24)->unique();
             $table->string('email', 254)->unique();
-            $table->string('password', 128);
+            $table->string('password', 255);
             $table->string('api_key', 32);
 
             $table->dateTime('last_login_at')->nullable();

db/migrations/2019_06_12_000000_fix_user_languages.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Engelsystem\Migrations;
+
+use Engelsystem\Database\Migration\Migration;
+
+class FixUserLanguages extends Migration
+{
+    /**
+     * Run the migration
+     */
+    public function up()
+    {
+        $connection = $this->schema->getConnection();
+        $connection
+            ->table('users_settings')
+            ->update([
+                'language' => $connection->raw('REPLACE(language, ".UTF-8", "")')
+            ]);
+    }
+
+    /**
+     * Reverse the migration
+     */
+    public function down()
+    {
+        $connection = $this->schema->getConnection();
+        $connection
+            ->table('users_settings')
+            ->update([
+                'language' => $connection->raw('CONCAT(language, ".UTF-8")')
+            ]);
+    }
+}

includes/controller/users_controller.php

@@ -47,6 +47,7 @@ function users_controller()
 function user_delete_controller()
 {
     $user = auth()->user();
+    $auth = auth();
     $request = request();
 
     if ($request->has('user_id')) {
@@ -68,12 +69,10 @@ function user_delete_controller()
     if ($request->hasPostData('submit')) {
         $valid = true;
 
-        if (
-        !(
+        if (!(
             $request->has('password')
-            && verify_password($request->postData('password'), $user->password, $user->id)
-        )
-        ) {
+            && $auth->verifyPassword($user, $request->postData('password'))
+        )) {
             $valid = false;
             error(__('Your password is incorrect. Please try it again.'));
         }
@@ -341,7 +340,7 @@ function user_password_recovery_set_new_controller()
         }
 
         if ($valid) {
-            set_password($passwordReset->user->id, $request->postData('password'));
+            auth()->setPassword($passwordReset->user, $request->postData('password'));
             success(__('Password saved.'));
             $passwordReset->delete();
             redirect(page_link_to('login'));

includes/helper/email_helper.php

@@ -1,5 +1,6 @@
 <?php
 
+use Engelsystem\Helpers\Translation\Translator;
 use Engelsystem\Mail\EngelsystemMailer;
 use Engelsystem\Models\User\User;
 use Psr\Log\LogLevel;
@@ -17,7 +18,7 @@ function engelsystem_email_to_user($recipientUser, $title, $message, $notIfItsMe
         return true;
     }
 
-    /** @var \Engelsystem\Helpers\Translator $translator */
+    /** @var Translator $translator */
     $translator = app()->get('translator');
     $locale = $translator->getLocale();
 

includes/pages/admin_user.php

@@ -291,8 +291,8 @@ function admin_user()
                     $request->postData('new_pw') != ''
                     && $request->postData('new_pw') == $request->postData('new_pw2')
                 ) {
-                    set_password($user_id, $request->postData('new_pw'));
                     $user_source = User::find($user_id);
+                    auth()->setPassword($user_source, $request->postData('new_pw'));
                     engelsystem_log('Set new password for ' . User_Nick_render($user_source, true));
                     $html .= success('Passwort neu gesetzt.', true);
                 } else {

includes/pages/guest_login.php

@@ -8,14 +8,6 @@ use Engelsystem\Models\User\Settings;
 use Engelsystem\Models\User\State;
 use Engelsystem\Models\User\User;
 
-/**
- * @return string
- */
-function login_title()
-{
-    return __('Login');
-}
-
 /**
  * @return string
  */
@@ -226,7 +218,7 @@ function guest_register()
 
             // Assign user-group and set password
             DB::insert('INSERT INTO `UserGroups` (`uid`, `group_id`) VALUES (?, -20)', [$user->id]);
-            set_password($user->id, $request->postData('password'));
+            auth()->setPassword($user, $request->postData('password'));
 
             // Assign angel-types
             $user_angel_types_info = [];
@@ -369,112 +361,3 @@ function entry_required()
 {
     return '<span class="text-info glyphicon glyphicon-warning-sign"></span>';
 }
-
-/**
- * @return string
- */
-function guest_login()
-{
-    $nick = '';
-    $request = request();
-    $session = session();
-    $valid = true;
-
-    $session->remove('uid');
-
-    if ($request->hasPostData('submit')) {
-        if ($request->has('nick') && !empty($request->input('nick'))) {
-            $nickValidation = User_validate_Nick($request->input('nick'));
-            $nick = $nickValidation->getValue();
-            $login_user = User::whereName($nickValidation->getValue())->first();
-            if ($login_user) {
-                if ($request->has('password')) {
-                    if (!verify_password($request->postData('password'), $login_user->password, $login_user->id)) {
-                        $valid = false;
-                        error(__('Your password is incorrect.  Please try it again.'));
-                    }
-                } else {
-                    $valid = false;
-                    error(__('Please enter a password.'));
-                }
-            } else {
-                $valid = false;
-                error(__('No user was found with that Nickname. Please try again. If you are still having problems, ask a Dispatcher.'));
-            }
-        } else {
-            $valid = false;
-            error(__('Please enter a nickname.'));
-        }
-
-        if ($valid && $login_user) {
-            $session->set('uid', $login_user->id);
-            $session->set('locale', $login_user->settings->language);
-
-            redirect(page_link_to(config('home_site')));
-        }
-    }
-
-    return page([
-        div('col-md-12', [
-            div('row', [
-                EventConfig_countdown_page()
-            ]),
-            div('row', [
-                div('col-sm-6 col-sm-offset-3 col-md-4 col-md-offset-4', [
-                    div('panel panel-primary first', [
-                        div('panel-heading', [
-                            '<span class="icon-icon_angel"></span> ' . __('Login')
-                        ]),
-                        div('panel-body', [
-                            msg(),
-                            form([
-                                form_text_placeholder('nick', __('Nick'), $nick),
-                                form_password_placeholder('password', __('Password')),
-                                form_submit('submit', __('Login')),
-                                !$valid ? buttons([
-                                    button(page_link_to('user_password_recovery'), __('I forgot my password'))
-                                ]) : ''
-                            ])
-                        ]),
-                        div('panel-footer', [
-                            glyph('info-sign') . __('Please note: You have to activate cookies!')
-                        ])
-                    ])
-                ])
-            ]),
-            div('row', [
-                div('col-sm-6 text-center', [
-                    heading(register_title(), 2),
-                    get_register_hint()
-                ]),
-                div('col-sm-6 text-center', [
-                    heading(__('What can I do?'), 2),
-                    '<p>' . __('Please read about the jobs you can do to help us.') . '</p>',
-                    buttons([
-                        button(
-                            page_link_to('angeltypes', ['action' => 'about']),
-                            __('Teams/Job description') . ' &raquo;'
-                        )
-                    ])
-                ])
-            ])
-        ])
-    ]);
-}
-
-/**
- * @return string
- */
-function get_register_hint()
-{
-    if (auth()->can('register') && config('registration_enabled')) {
-        return join('', [
-            '<p>' . __('Please sign up, if you want to help us!') . '</p>',
-            buttons([
-                button(page_link_to('register'), register_title() . ' &raquo;')
-            ])
-        ]);
-    }
-
-    return error(__('Registration is disabled.'), true);
-}

includes/pages/user_settings.php

@@ -101,9 +101,10 @@ function user_settings_main($user_source, $enable_tshirt_size, $tshirt_sizes)
 function user_settings_password($user_source)
 {
     $request = request();
+    $auth = auth();
     if (
         !$request->has('password')
-        || !verify_password($request->postData('password'), $user_source->password, $user_source->id)
+        || !$auth->verifyPassword($user_source, $request->postData('password'))
     ) {
         error(__('-> not OK. Please try again.'));
     } elseif (strlen($request->postData('new_password')) < config('min_password_length')) {
@@ -111,7 +112,7 @@ function user_settings_password($user_source)
     } elseif ($request->postData('new_password') != $request->postData('new_password2')) {
         error(__('Your passwords don\'t match.'));
     } else {
-        set_password($user_source->id, $request->postData('new_password'));
+        $auth->setPassword($user_source, $request->postData('new_password'));
         success(__('Password saved.'));
     }
     redirect(page_link_to('user_settings'));

includes/sys_auth.php

@@ -1,74 +1,6 @@
 <?php
 
 use Engelsystem\Database\DB;
-use Engelsystem\Models\User\User;
-
-/**
- * generate a salt (random string) of arbitrary length suitable for the use with crypt()
- *
- * @param int $length
- * @return string
- */
-function generate_salt($length = 16)
-{
-    $alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
-    $salt = '';
-    for ($i = 0; $i < $length; $i++) {
-        $salt .= $alphabet[rand(0, strlen($alphabet) - 1)];
-    }
-    return $salt;
-}
-
-/**
- * set the password of a user
- *
- * @param int    $uid
- * @param string $password
- */
-function set_password($uid, $password)
-{
-    $user = User::find($uid);
-    $user->password = crypt($password, config('crypt_alg') . '$' . generate_salt(16) . '$');
-    $user->save();
-}
-
-/**
- * verify a password given a precomputed salt.
- * if $uid is given and $salt is an old-style salt (plain md5), we convert it automatically
- *
- * @param string $password
- * @param string $salt
- * @param int    $uid
- * @return bool
- */
-function verify_password($password, $salt, $uid = null)
-{
-    $crypt_alg = config('crypt_alg');
-    $correct = false;
-    if (substr($salt, 0, 1) == '$') {
-        // new-style crypt()
-        $correct = crypt($password, $salt) == $salt;
-    } elseif (substr($salt, 0, 7) == '{crypt}') {
-        // old-style crypt() with DES and static salt - not used anymore
-        $correct = crypt($password, '77') == $salt;
-    } elseif (strlen($salt) == 32) {
-        // old-style md5 without salt - not used anymore
-        $correct = md5($password) == $salt;
-    }
-
-    if ($correct && substr($salt, 0, strlen($crypt_alg)) != $crypt_alg && intval($uid)) {
-        // this password is stored in another format than we want it to be.
-        // let's update it!
-        // we duplicate the query from the above set_password() function to have the extra safety of checking
-        // the old hash
-        $user = User::find($uid);
-        if ($user->password == $salt) {
-            $user->password = crypt($password, $crypt_alg . '$' . generate_salt() . '$');
-            $user->save();
-        }
-    }
-    return $correct;
-}
 
 /**
  * @param int $user_id

includes/view/AngelTypes_view.php

@@ -578,7 +578,7 @@ function AngelTypes_about_view($angeltypes, $user_logged_in)
             $buttons[] = button(page_link_to('register'), register_title());
         }
 
-        $buttons[] = button(page_link_to('login'), login_title());
+        $buttons[] = button(page_link_to('login'), __('Login'));
     }
 
     $faqUrl = config('faq_url');

includes/view/User_view.php

@@ -126,7 +126,7 @@ function User_registration_success_view($event_welcome_message)
             div('col-md-4', [
                 '<h2>' . __('Login') . '</h2>',
                 form([
-                    form_text('nick', __('Nick'), ''),
+                    form_text('login', __('Nick'), ''),
                     form_password('password', __('Password')),
                     form_submit('submit', __('Login')),
                     buttons([

resources/lang/de_DE/default.po

@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Engelsystem\n"
 "POT-Creation-Date: 2019-04-28 15:23+0200\n"
-"PO-Revision-Date: 2019-06-12 16:07+0200\n"
+"PO-Revision-Date: 2019-06-13 11:54+0200\n"
 "Last-Translator: msquare <msquare@notrademark.de>\n"
 "Language-Team: \n"
 "Language: de_DE\n"
@@ -10,7 +10,7 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "X-Generator: Poedit 1.8.11\n"
-"X-Poedit-KeywordsList: __;_e;translate;translatePlural;gettext;gettext_noop\n"
+"X-Poedit-KeywordsList: __;_e;translate;translatePlural\n"
 "X-Poedit-Basepath: ../../../..\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "X-Poedit-SourceCharset: UTF-8\n"
@@ -1529,19 +1529,20 @@ msgstr "Nachname"
 msgid "Entry required!"
 msgstr "Pflichtfeld!"
 
-#: includes/pages/guest_login.php:414
-msgid "Please enter a password."
-msgstr "Gib bitte ein Passwort ein."
+#~ msgid "auth.no-password"
+#~ msgstr "Gib bitte ein Passwort ein."
 
 #: includes/pages/guest_login.php:418
-msgid ""
-"No user was found with that Nickname. Please try again. If you are still "
-"having problems, ask a Dispatcher."
+msgid "auth.not-found"
 msgstr ""
-"Es wurde kein Engel mit diesem Namen gefunden. Probiere es bitte noch "
-"einmal. Wenn das Problem weiterhin besteht, frage einen Dispatcher."
+"Es wurde kein Engel gefunden. Probiere es bitte noch einmal. Wenn das Problem "
+"weiterhin besteht, melde dich im Himmel."
 
-#: includes/pages/guest_login.php:451 includes/view/User_view.php:130
+#~ msgid "auth.no-nickname"
+#~ msgstr "Gib bitte einen Nick an."
+
+#: includes/pages/guest_login.php:481
+#: includes/view/User_view.php:122
 msgid "I forgot my password"
 msgstr "Passwort vergessen"
 
@@ -2357,7 +2358,7 @@ msgid ""
 "I have my own car with me and am willing to use it for the event (You'll get "
 "reimbursed for fuel)"
 msgstr ""
-"Ich habe mein eigenes Auto dabei und möchte würde es zum Fahren für das "
+"Ich habe mein eigenes Auto dabei und möchte es zum Fahren für das "
 "Event verwenden (Du wirst für Spritkosten entschädigt)"
 
 #: includes/view/UserDriverLicenses_view.php:30
@@ -2762,3 +2763,9 @@ msgid ""
 msgstr ""
 "Diese Seite existiert nicht oder Du hast keinen Zugriff. Melde Dich an um "
 "Zugriff zu erhalten!"
+
+msgid "validation.password.required"
+msgstr "Bitte gib ein Passwort an."
+
+msgid "validation.login.required"
+msgstr "Bitte gib einen Loginnamen an."

resources/lang/en_US/default.po

@@ -0,0 +1,32 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: Engelsystem 2.0\n"
+"POT-Creation-Date: 2017-12-29 19:01+0100\n"
+"PO-Revision-Date: 2019-06-04 23:41+0200\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 1.8.11\n"
+"X-Poedit-KeywordsList: _;gettext;gettext_noop\n"
+"X-Poedit-Basepath: .\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"X-Poedit-SourceCharset: UTF-8\n"
+"Last-Translator: \n"
+"Language: en_US\n"
+"X-Poedit-SearchPath-0: .\n"
+
+#~ msgid "auth.no-nickname"
+#~ msgstr "Please enter a nickname."
+
+#~ msgid "auth.no-password"
+#~ msgstr "Please enter a password."
+
+msgid "auth.not-found"
+msgstr "No user was found. Please try again. If you are still having problems, ask Heaven."
+
+msgid "validation.password.required"
+msgstr "The password is required."
+
+msgid "validation.login.required"
+msgstr "The login name is required."

resources/lang/pt_BR/default.po

@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Engelsystem 2.0\n"
 "POT-Creation-Date: 2017-04-25 05:23+0200\n"
-"PO-Revision-Date: 2018-10-05 15:35+0200\n"
+"PO-Revision-Date: 2018-11-27 00:29+0100\n"
 "Last-Translator: samba <samba@autistici.org>\n"
 "Language-Team: \n"
 "Language: pt_BR\n"
@@ -1420,19 +1420,17 @@ msgid "Entry required!"
 msgstr "Campo necessário!"
 
 #: includes/pages/guest_login.php:319
-msgid "Please enter a password."
+msgid "auth.no-password"
 msgstr "Por favor digite uma senha."
 
 #: includes/pages/guest_login.php:323
-msgid ""
-"No user was found with that Nickname. Please try again. If you are still "
-"having problems, ask a Dispatcher."
+msgid "auth.not-found"
 msgstr ""
-"Nenhum usuário com esse apelido foi encontrado. Por favor tente novamente. \n"
+"Nenhum usuário foi encontrado. Por favor tente novamente. \n"
 "Se você continuar com problemas, pergunte a um Dispatcher."
 
 #: includes/pages/guest_login.php:327
-msgid "Please enter a nickname."
+msgid "auth.no-nickname"
 msgstr "Por favor digite um apelido."
 
 #: includes/pages/guest_login.php:358 includes/view/User_view.php:101

resources/views/errors/405.twig

@@ -0,0 +1,5 @@
+{% extends "errors/default.twig" %}
+
+{% block title %}{{ __("405: Method not allowed") }}{% endblock %}
+
+{% block content_headline_text %}{{ __("405: Method not allowed") }}{% endblock %}

resources/views/macros/base.twig

@@ -0,0 +1,11 @@
+{% macro angel() %}
+    <span class="icon-icon_angel"></span>
+{% endmacro %}
+
+{% macro glyphicon(glyph) %}
+    <span class="glyphicon glyphicon-{{ glyph }}"></span>
+{% endmacro %}
+
+{% macro alert(message, type) %}
+    <div class="alert alert-{{ type|default('info') }}">{{ message }}</div>
+{% endmacro %}

resources/views/pages/login.twig

@@ -0,0 +1,104 @@
+{% extends "layouts/app.twig" %}
+{% import 'macros/base.twig' as m %}
+
+{% block title %}{{ __('Login') }}{% endblock %}
+
+{% block content %}
+    <div class="col-md-12">
+        <div class="row">
+            <div class="col-sm-12 text-center">
+                <h2>{{ __('Welcome to the %s!', [config('name') ~ m.angel() ~ (config('app_name')|upper) ])|raw }}</h2>
+            </div>
+        </div>
+
+        <div class="row">
+            {% for name,date in {
+                (__('Buildup starts')): config('buildup_start'),
+                (__('Event starts')): config('event_start'),
+                (__('Event ends')): config('event_end'),
+                (__('Teardown ends')): config('teardown_end')
+            } if date %}
+                {% if date > date() %}
+                    <div class="col-sm-3 text-center hidden-xs">
+                        <h4>{{ name }}</h4>
+                        <span class="moment-countdown text-big" data-timestamp="{{ date.getTimestamp }}">%c</span>
+                        <small>{{ date.format(__('Y-m-d')) }}</small>
+                    </div>
+                {% endif %}
+            {% endfor %}
+        </div>
+
+        <div class="row">
+            <div class="col-sm-6 col-sm-offset-3 col-md-4 col-md-offset-4">
+                <div class="panel panel-primary first">
+
+                    <div class="panel-heading">{{ m.angel }} {{ __('Login') }}</div>
+
+                    <div class="panel-body">
+                        {% for message in errors|default([]) %}
+                            {{ m.alert(__(message), 'danger') }}
+                        {% endfor %}
+
+                        <form action="" enctype="multipart/form-data" method="post">
+                            {{ csrf() }}
+                            <div class="form-group">
+                                <input class="form-control" id="form_nick"
+                                       type="text" name="login" value="" placeholder="{{ __('Nick') }}">
+                            </div>
+
+                            <div class="form-group">
+                                <input class="form-control" id="form_password"
+                                       type="password" name="password" value="" placeholder="{{ __('Password') }}">
+                            </div>
+
+                            <div class="form-group">
+                                <div class="btn-group">
+                                    <button class="btn btn-primary" type="submit" name="submit">
+                                        {{ __('Login') }}
+                                    </button>
+
+                                    {% if show_password_recovery|default(false) %}
+                                        <a href="{{ url('user-password-recovery') }}" class="btn btn-default ">
+                                            {{ __('I forgot my password') }}
+                                        </a>
+                                    {% endif %}
+                                </div>
+                            </div>
+
+                        </form>
+                    </div>
+
+                    <div class="panel-footer">
+                        {{ m.glyphicon('info-sign') }} {{ __('Please note: You have to activate cookies!') }}
+                    </div>
+
+                </div>
+            </div>
+        </div>
+
+        <div class="row">
+            <div class="col-sm-6 text-center">
+                <h2>{{ __('Register') }}</h2>
+                {% if has_permission_to('register') and config('registration_enabled') %}
+                    <p>{{ __('Please sign up, if you want to help us!') }}</p>
+                    <div class="form-group">
+                        <a href="{{ url('register') }}" class="btn btn-default">{{ __('Register') }} &raquo;</a>
+                    </div>
+                {% else %}
+                    {{ m.alert(__('Registration is disabled.'), 'danger') }}
+                {% endif %}
+            </div>
+
+            <div class="col-sm-6 text-center">
+                <h2>{{ __('What can I do?') }}</h2>
+                <p>{{ __('Please read about the jobs you can do to help us.') }}</p>
+                <div class="form-group">
+                    <a href="{{ url('angeltypes', {'action': 'about'}) }}" class="btn btn-default">
+                        {{ __('Teams/Job description') }} &raquo;
+                    </a>
+                </div>
+            </div>
+        </div>
+
+    </div>
+{% endblock %}

src/Controllers/AuthController.php

@@ -2,8 +2,14 @@
 
 namespace Engelsystem\Controllers;
 
+use Carbon\Carbon;
+use Engelsystem\Helpers\Authenticator;
+use Engelsystem\Http\Request;
 use Engelsystem\Http\Response;
 use Engelsystem\Http\UrlGeneratorInterface;
+use Engelsystem\Models\User\User;
+use Illuminate\Support\Arr;
+use Illuminate\Support\Collection;
 use Symfony\Component\HttpFoundation\Session\SessionInterface;
 
 class AuthController extends BaseController
@@ -17,17 +23,91 @@ class AuthController extends BaseController
     /** @var UrlGeneratorInterface */
     protected $url;
 
-    public function __construct(Response $response, SessionInterface $session, UrlGeneratorInterface $url)
-    {
+    /** @var Authenticator */
+    protected $auth;
+
+    /** @var array */
+    protected $permissions = [
+        'login'     => 'login',
+        'postLogin' => 'login',
+    ];
+
+    /**
+     * @param Response              $response
+     * @param SessionInterface      $session
+     * @param UrlGeneratorInterface $url
+     * @param Authenticator         $auth
+     */
+    public function __construct(
+        Response $response,
+        SessionInterface $session,
+        UrlGeneratorInterface $url,
+        Authenticator $auth
+    ) {
         $this->response = $response;
         $this->session = $session;
         $this->url = $url;
+        $this->auth = $auth;
     }
 
     /**
      * @return Response
      */
-    public function logout()
+    public function login(): Response
+    {
+        return $this->showLogin();
+    }
+
+    /**
+     * @param bool $showRecovery
+     * @return Response
+     */
+    protected function showLogin($showRecovery = false): Response
+    {
+        $errors = Collection::make(Arr::flatten($this->session->get('errors', [])));
+        $this->session->remove('errors');
+
+        return $this->response->withView(
+            'pages/login',
+            ['errors' => $errors, 'show_password_recovery' => $showRecovery]
+        );
+    }
+
+    /**
+     * Posted login form
+     *
+     * @param Request $request
+     * @return Response
+     */
+    public function postLogin(Request $request): Response
+    {
+        $data = $this->validate($request, [
+            'login'    => 'required',
+            'password' => 'required',
+        ]);
+
+        $user = $this->auth->authenticate($data['login'], $data['password']);
+
+        if (!$user instanceof User) {
+            $this->session->set('errors', $this->session->get('errors', []) + ['auth.not-found']);
+
+            return $this->showLogin(true);
+        }
+
+        $this->session->invalidate();
+        $this->session->set('user_id', $user->id);
+        $this->session->set('locale', $user->settings->language);
+
+        $user->last_login_at = new Carbon();
+        $user->save(['touch' => false]);
+
+        return $this->response->redirectTo('news');
+    }
+
+    /**
+     * @return Response
+     */
+    public function logout(): Response
     {
         $this->session->invalidate();
 

src/Controllers/BaseController.php

@@ -2,8 +2,12 @@
 
 namespace Engelsystem\Controllers;
 
+use Engelsystem\Http\Validation\ValidatesRequest;
+
 abstract class BaseController
 {
+    use ValidatesRequest;
+
     /** @var string[]|string[][] A list of Permissions required to access the controller or certain pages */
     protected $permissions = [];
 

src/Controllers/Metrics/MetricsEngine.php

@@ -9,13 +9,13 @@ class MetricsEngine implements EngineInterface
     /**
      * Render metrics
      *
-     * @example $data = ['foo' => [['labels' => ['foo'=>'bar'], 'value'=>42]], 'bar'=>123]
-     *
      * @param string  $path
      * @param mixed[] $data
      * @return string
+     *
+     * @example $data = ['foo' => [['labels' => ['foo'=>'bar'], 'value'=>42]], 'bar'=>123]
      */
-    public function get($path, $data = []): string
+    public function get(string $path, array $data = []): string
     {
         $return = [];
         foreach ($data as $name => $list) {
@@ -52,7 +52,7 @@ class MetricsEngine implements EngineInterface
      * @param string $path
      * @return bool
      */
-    public function canRender($path): bool
+    public function canRender(string $path): bool
     {
         return $path == '/metrics';
     }
@@ -60,8 +60,8 @@ class MetricsEngine implements EngineInterface
     /**
      * @param string      $name
      * @param array|mixed $row
-     * @see https://prometheus.io/docs/instrumenting/exposition_formats/
      * @return string
+     * @see https://prometheus.io/docs/instrumenting/exposition_formats/
      */
     protected function formatData($name, $row): string
     {
@@ -135,4 +135,12 @@ class MetricsEngine implements EngineInterface
             $value
         );
     }
+
+    /**
+     * Does nothing as shared data will onyly result in unexpected behaviour
+     *
+     * @param string|mixed[] $key
+     * @param mixed          $value
+     */
+    public function share($key, $value = null) { }
 }

src/Helpers/Authenticator.php

@@ -25,6 +25,9 @@ class Authenticator
     /** @var string[] */
     protected $permissions;
 
+    /** @var int */
+    protected $passwordAlgorithm = PASSWORD_DEFAULT;
+
     /**
      * @param ServerRequestInterface $request
      * @param Session                $session
@@ -48,7 +51,7 @@ class Authenticator
             return $this->user;
         }
 
-        $userId = $this->session->get('uid');
+        $userId = $this->session->get('user_id');
         if (!$userId) {
             return null;
         }
@@ -104,17 +107,15 @@ class Authenticator
         $abilities = (array)$abilities;
 
         if (empty($this->permissions)) {
-            $userId = $this->user ? $this->user->id : $this->session->get('uid');
+            $user = $this->user();
 
-            if ($userId) {
-                if ($user = $this->user()) {
+            if ($user) {
                 $this->permissions = $this->getPermissionsByUser($user);
 
                 $user->last_login_at = new Carbon();
                 $user->save();
-                } else {
-                    $this->session->remove('uid');
-                }
+            } elseif ($this->session->get('user_id')) {
+                $this->session->remove('user_id');
             }
 
             if (empty($this->permissions)) {
@@ -131,6 +132,78 @@ class Authenticator
         return true;
     }
 
+    /**
+     * @param string $login
+     * @param string $password
+     * @return User|null
+     */
+    public function authenticate(string $login, string $password)
+    {
+        /** @var User $user */
+        $user = $this->userRepository->whereName($login)->first();
+        if (!$user) {
+            $user = $this->userRepository->whereEmail($login)->first();
+        }
+
+        if (!$user) {
+            return null;
+        }
+
+        if (!$this->verifyPassword($user, $password)) {
+            return null;
+        }
+
+        return $user;
+    }
+
+    /**
+     * @param User   $user
+     * @param string $password
+     * @return bool
+     */
+    public function verifyPassword(User $user, string $password)
+    {
+        $algorithm = $this->passwordAlgorithm;
+
+        if (!password_verify($password, $user->password)) {
+            return false;
+        }
+
+        if (password_needs_rehash($user->password, $algorithm)) {
+            $this->setPassword($user, $password);
+        }
+
+        return true;
+    }
+
+    /**
+     * @param UserRepository $user
+     * @param string         $password
+     */
+    public function setPassword(User $user, string $password)
+    {
+        $algorithm = $this->passwordAlgorithm;
+
+        $user->password = password_hash($password, $algorithm);
+        $user->save();
+    }
+
+    /**
+     * @return int
+     */
+    public function getPasswordAlgorithm()
+    {
+        return $this->passwordAlgorithm;
+    }
+
+    /**
+     * @param int $passwordAlgorithm
+     */
+    public function setPasswordAlgorithm(int $passwordAlgorithm)
+    {
+        $this->passwordAlgorithm = $passwordAlgorithm;
+    }
+
     /**
      * @param User $user
      * @return array

src/Helpers/AuthenticatorServiceProvider.php

@@ -2,14 +2,18 @@
 
 namespace Engelsystem\Helpers;
 
+use Engelsystem\Config\Config;
 use Engelsystem\Container\ServiceProvider;
 
 class AuthenticatorServiceProvider extends ServiceProvider
 {
     public function register()
     {
+        /** @var Config $config */
+        $config = $this->app->get('config');
         /** @var Authenticator $authenticator */
         $authenticator = $this->app->make(Authenticator::class);
+        $authenticator->setPasswordAlgorithm($config->get('password_algorithm'));
 
         $this->app->instance(Authenticator::class, $authenticator);
         $this->app->instance('authenticator', $authenticator);

src/Helpers/Translation/GettextTranslator.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Engelsystem\Helpers\Translation;
+
+use Gettext\Translator;
+
+class GettextTranslator extends Translator
+{
+    /**
+     * @param string $domain
+     * @param string $context
+     * @param string $original
+     * @return string
+     * @throws TranslationNotFound
+     */
+    public function dpgettext($domain, $context, $original)
+    {
+        $this->assertHasTranslation($domain, $context, $original);
+
+        return parent::dpgettext($domain, $context, $original);
+    }
+
+    /**
+     * @param string $domain
+     * @param string $context
+     * @param string $original
+     * @param string $plural
+     * @param string $value
+     * @return string
+     * @throws TranslationNotFound
+     */
+    public function dnpgettext($domain, $context, $original, $plural, $value)
+    {
+        $this->assertHasTranslation($domain, $context, $original);
+
+        return parent::dnpgettext($domain, $context, $original, $plural, $value);
+    }
+
+    /**
+     * @param string $domain
+     * @param string $context
+     * @param string $original
+     * @throws TranslationNotFound
+     */
+    protected function assertHasTranslation($domain, $context, $original)
+    {
+        if ($this->getTranslation($domain, $context, $original)) {
+            return;
+        }
+
+        throw new TranslationNotFound(implode('/', [$domain, $context, $original]));
+    }
+}

src/Helpers/Translation/TranslationNotFound.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace Engelsystem\Helpers\Translation;
+
+use Exception;
+
+class TranslationNotFound extends Exception
+{
+}

src/Helpers/Translation/TranslationServiceProvider.php

@@ -0,0 +1,86 @@
+<?php
+
+namespace Engelsystem\Helpers\Translation;
+
+use Engelsystem\Config\Config;
+use Engelsystem\Container\ServiceProvider;
+use Gettext\Translations;
+use Symfony\Component\HttpFoundation\Session\Session;
+
+class TranslationServiceProvider extends ServiceProvider
+{
+    /** @var GettextTranslator */
+    protected $translators = [];
+
+    public function register(): void
+    {
+        /** @var Config $config */
+        $config = $this->app->get('config');
+        /** @var Session $session */
+        $session = $this->app->get('session');
+
+        $locales = $config->get('locales');
+        $locale = $config->get('default_locale');
+        $fallbackLocale = $config->get('fallback_locale', 'en_US');
+
+        $sessionLocale = $session->get('locale', $locale);
+        if (isset($locales[$sessionLocale])) {
+            $locale = $sessionLocale;
+        }
+
+        $session->set('locale', $locale);
+
+        $translator = $this->app->make(
+            Translator::class,
+            [
+                'locale'                => $locale,
+                'locales'               => $locales,
+                'fallbackLocale'        => $fallbackLocale,
+                'getTranslatorCallback' => [$this, 'getTranslator'],
+                'localeChangeCallback'  => [$this, 'setLocale'],
+            ]
+        );
+        $this->app->instance(Translator::class, $translator);
+        $this->app->instance('translator', $translator);
+    }
+
+    /**
+     * @param string $locale
+     * @codeCoverageIgnore
+     */
+    public function setLocale(string $locale): void
+    {
+        $locale .= '.UTF-8';
+        // Set the users locale
+        putenv('LC_ALL=' . $locale);
+        setlocale(LC_ALL, $locale);
+
+        // Reset numeric formatting to allow output of floats
+        putenv('LC_NUMERIC=C');
+        setlocale(LC_NUMERIC, 'C');
+    }
+
+    /**
+     * @param string $locale
+     * @return GettextTranslator
+     */
+    public function getTranslator(string $locale): GettextTranslator
+    {
+        if (!isset($this->translators[$locale])) {
+            $file = $this->app->get('path.lang') . '/' . $locale . '/default.mo';
+
+            /** @var GettextTranslator $translator */
+            $translator = $this->app->make(GettextTranslator::class);
+
+            /** @var Translations $translations */
+            $translations = $this->app->make(Translations::class);
+            $translations->addFromMoFile($file);
+
+            $translator->loadTranslations($translations);
+
+            $this->translators[$locale] = $translator;
+        }
+
+        return $this->translators[$locale];
+    }
+}

src/Helpers/Translation/Translator.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace Engelsystem\Helpers;
+namespace Engelsystem\Helpers\Translation;
 
 class Translator
 {
@@ -10,6 +10,12 @@ class Translator
     /** @var string */
     protected $locale;
 
+    /** @var string */
+    protected $fallbackLocale;
+
+    /** @var callable */
+    protected $getTranslatorCallback;
+
     /** @var callable */
     protected $localeChangeCallback;
 
@@ -17,15 +23,24 @@ class Translator
      * Translator constructor.
      *
      * @param string   $locale
+     * @param string   $fallbackLocale
+     * @param callable $getTranslatorCallback
      * @param string[] $locales
      * @param callable $localeChangeCallback
      */
-    public function __construct(string $locale, array $locales = [], callable $localeChangeCallback = null)
-    {
+    public function __construct(
+        string $locale,
+        string $fallbackLocale,
+        callable $getTranslatorCallback,
+        array $locales = [],
+        callable $localeChangeCallback = null
+    ) {
         $this->localeChangeCallback = $localeChangeCallback;
+        $this->getTranslatorCallback = $getTranslatorCallback;
 
         $this->setLocale($locale);
-        $this->setLocales($locales);
+        $this->fallbackLocale = $fallbackLocale;
+        $this->locales = $locales;
     }
 
     /**
@@ -37,9 +52,7 @@ class Translator
      */
     public function translate(string $key, array $replace = []): string
     {
-        $translated = $this->translateGettext($key);
-
-        return $this->replaceText($translated, $replace);
+        return $this->translateText('gettext', [$key], $replace);
     }
 
     /**
@@ -53,7 +66,29 @@ class Translator
      */
     public function translatePlural(string $key, string $pluralKey, int $number, array $replace = []): string
     {
-        $translated = $this->translateGettextPlural($key, $pluralKey, $number);
+        return $this->translateText('ngettext', [$key, $pluralKey, $number], $replace);
+    }
+
+    /**
+     * @param string $type
+     * @param array  $parameters
+     * @param array  $replace
+     * @return mixed|string
+     */
+    protected function translateText(string $type, array $parameters, array $replace = [])
+    {
+        $translated = $parameters[0];
+
+        foreach ([$this->locale, $this->fallbackLocale] as $lang) {
+            /** @var GettextTranslator $translator */
+            $translator = call_user_func($this->getTranslatorCallback, $lang);
+
+            try {
+                $translated = call_user_func_array([$translator, $type], $parameters);
+                break;
+            } catch (TranslationNotFound $e) {
+            }
+        }
 
         return $this->replaceText($translated, $replace);
     }
@@ -74,32 +109,6 @@ class Translator
         return call_user_func_array('sprintf', array_merge([$key], $replace));
     }
 
-    /**
-     * Translate the key via gettext
-     *
-     * @param string $key
-     * @return string
-     * @codeCoverageIgnore
-     */
-    protected function translateGettext(string $key): string
-    {
-        return gettext($key);
-    }
-
-    /**
-     * Translate the key via gettext
-     *
-     * @param string $key
-     * @param string $keyPlural
-     * @param int    $number
-     * @return string
-     * @codeCoverageIgnore
-     */
-    protected function translateGettextPlural(string $key, string $keyPlural, int $number): string
-    {
-        return ngettext($key, $keyPlural, $number);
-    }
-
     /**
      * @return string
      */

src/Helpers/TranslationServiceProvider.php

@@ -1,63 +0,0 @@
-<?php
-
-namespace Engelsystem\Helpers;
-
-use Engelsystem\Config\Config;
-use Engelsystem\Container\ServiceProvider;
-use Symfony\Component\HttpFoundation\Session\Session;
-
-class TranslationServiceProvider extends ServiceProvider
-{
-    public function register()
-    {
-        /** @var Config $config */
-        $config = $this->app->get('config');
-        /** @var Session $session */
-        $session = $this->app->get('session');
-
-        $locales = $config->get('locales');
-        $locale = $config->get('default_locale');
-
-        $sessionLocale = $session->get('locale', $locale);
-        if (isset($locales[$sessionLocale])) {
-            $locale = $sessionLocale;
-        }
-
-        $this->initGettext();
-        $session->set('locale', $locale);
-
-        $translator = $this->app->make(
-            Translator::class,
-            ['locale' => $locale, 'locales' => $locales, 'localeChangeCallback' => [$this, 'setLocale']]
-        );
-        $this->app->instance(Translator::class, $translator);
-        $this->app->instance('translator', $translator);
-    }
-
-    /**
-     * @param string $textDomain
-     * @param string $encoding
-     * @codeCoverageIgnore
-     */
-    protected function initGettext($textDomain = 'default', $encoding = 'UTF-8')
-    {
-        bindtextdomain($textDomain, $this->app->get('path.lang'));
-        bind_textdomain_codeset($textDomain, $encoding);
-        textdomain($textDomain);
-    }
-
-    /**
-     * @param string $locale
-     * @codeCoverageIgnore
-     */
-    public function setLocale($locale)
-    {
-        // Set the users locale
-        putenv('LC_ALL=' . $locale);
-        setlocale(LC_ALL, $locale);
-
-        // Reset numeric formatting to allow output of floats
-        putenv('LC_NUMERIC=C');
-        setlocale(LC_NUMERIC, 'C');
-    }
-}

src/Http/Exceptions/ValidationException.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Engelsystem\Http\Exceptions;
+
+use Engelsystem\Http\Validation\Validator;
+use RuntimeException;
+use Throwable;
+
+class ValidationException extends RuntimeException
+{
+    /** @var Validator */
+    protected $validator;
+
+    /**
+     * @param Validator      $validator
+     * @param string         $message
+     * @param int            $code
+     * @param Throwable|null $previous
+     */
+    public function __construct(
+        Validator $validator,
+        string $message = '',
+        int $code = 0,
+        Throwable $previous = null
+    ) {
+        $this->validator = $validator;
+        parent::__construct($message, $code, $previous);
+    }
+
+    /**
+     * @return Validator
+     */
+    public function getValidator(): Validator
+    {
+        return $this->validator;
+    }
+}

src/Http/Validation/Rules/In.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Engelsystem\Http\Validation\Rules;
+
+use Respect\Validation\Rules\In as RespectIn;
+
+class In extends RespectIn
+{
+    /**
+     * @param mixed $haystack
+     * @param bool  $compareIdentical
+     */
+    public function __construct($haystack, $compareIdentical = false)
+    {
+        if (!is_array($haystack)) {
+            $haystack = explode(',', $haystack);
+        }
+
+        parent::__construct($haystack, $compareIdentical);
+    }
+}

src/Http/Validation/Rules/NotIn.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Engelsystem\Http\Validation\Rules;
+
+class NotIn extends In
+{
+    /**
+     * @param mixed $input
+     * @return bool
+     */
+    public function validate($input)
+    {
+        return !parent::validate($input);
+    }
+}

src/Http/Validation/ValidatesRequest.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Engelsystem\Http\Validation;
+
+use Engelsystem\Http\Exceptions\ValidationException;
+use Engelsystem\Http\Request;
+
+trait ValidatesRequest
+{
+    /** @var Validator */
+    protected $validator;
+
+    /**
+     * @param Request $request
+     * @param array   $rules
+     * @return array
+     */
+    protected function validate(Request $request, array $rules)
+    {
+        if (!$this->validator->validate(
+            (array)$request->getParsedBody(),
+            $rules
+        )) {
+            throw new ValidationException($this->validator);
+        }
+
+        return $this->validator->getData();
+    }
+
+    /**
+     * @param Validator $validator
+     */
+    public function setValidator(Validator $validator)
+    {
+        $this->validator = $validator;
+    }
+}

src/Http/Validation/ValidationServiceProvider.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Engelsystem\Http\Validation;
+
+use Engelsystem\Application;
+use Engelsystem\Container\ServiceProvider;
+use Engelsystem\Controllers\BaseController;
+
+class ValidationServiceProvider extends ServiceProvider
+{
+    public function register()
+    {
+        $validator = $this->app->make(Validator::class);
+        $this->app->instance(Validator::class, $validator);
+        $this->app->instance('validator', $validator);
+
+        $this->app->afterResolving(function ($object, Application $app) {
+            if (!$object instanceof BaseController) {
+                return;
+            }
+
+            $object->setValidator($app->get(Validator::class));
+        });
+    }
+}

src/Http/Validation/Validator.php

@@ -0,0 +1,122 @@
+<?php
+
+namespace Engelsystem\Http\Validation;
+
+use Illuminate\Support\Str;
+use InvalidArgumentException;
+use Respect\Validation\Exceptions\ComponentException;
+use Respect\Validation\Validator as RespectValidator;
+
+class Validator
+{
+    /** @var string[] */
+    protected $errors = [];
+
+    /** @var array */
+    protected $data = [];
+
+    /** @var array */
+    protected $mapping = [
+        'accepted' => 'TrueVal',
+        'int'      => 'IntVal',
+        'required' => 'NotEmpty',
+    ];
+
+    /** @var array */
+    protected $nestedRules = ['optional', 'not'];
+
+    /**
+     * @param array $data
+     * @param array $rules
+     * @return bool
+     */
+    public function validate($data, $rules)
+    {
+        $this->errors = [];
+        $this->data = [];
+
+        foreach ($rules as $key => $values) {
+            $v = new RespectValidator();
+            $v->with('\\Engelsystem\\Http\\Validation\\Rules', true);
+
+            $value = isset($data[$key]) ? $data[$key] : null;
+            $values = explode('|', $values);
+
+            $packing = [];
+            foreach ($this->nestedRules as $rule) {
+                if (in_array($rule, $values)) {
+                    $packing[] = $rule;
+                }
+            }
+
+            $values = array_diff($values, $this->nestedRules);
+            foreach ($values as $parameters) {
+                $parameters = explode(':', $parameters);
+                $rule = array_shift($parameters);
+                $rule = Str::camel($rule);
+                $rule = $this->map($rule);
+
+                // To allow rules nesting
+                $w = $v;
+                try {
+                    foreach (array_reverse(array_merge($packing, [$rule])) as $rule) {
+                        if (!in_array($rule, $this->nestedRules)) {
+                            call_user_func_array([$w, $rule], $parameters);
+                            continue;
+                        }
+
+                        $w = call_user_func_array([new RespectValidator(), $rule], [$w]);
+                    }
+                } catch (ComponentException $e) {
+                    throw new InvalidArgumentException($e->getMessage(), $e->getCode(), $e);
+                }
+
+                if ($w->validate($value)) {
+                    $this->data[$key] = $value;
+                } else {
+                    $this->errors[$key][] = implode('.', ['validation', $key, $this->mapBack($rule)]);
+                }
+
+                $v->removeRules();
+            }
+        }
+
+        return empty($this->errors);
+    }
+
+    /**
+     * @param string $rule
+     * @return string
+     */
+    protected function map($rule)
+    {
+        return $this->mapping[$rule] ?? $rule;
+    }
+
+    /**
+     * @param string $rule
+     * @return string
+     */
+    protected function mapBack($rule)
+    {
+        $mapping = array_flip($this->mapping);
+
+        return $mapping[$rule] ?? $rule;
+    }
+
+    /**
+     * @return array
+     */
+    public function getData(): array
+    {
+        return $this->data;
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getErrors(): array
+    {
+        return $this->errors;
+    }
+}

src/Middleware/ErrorHandler.php

@@ -3,7 +3,10 @@
 namespace Engelsystem\Middleware;
 
 use Engelsystem\Http\Exceptions\HttpException;
+use Engelsystem\Http\Exceptions\ValidationException;
+use Engelsystem\Http\Request;
 use Engelsystem\Http\Response;
+use Illuminate\Support\Arr;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Server\MiddlewareInterface;
@@ -18,6 +21,16 @@ class ErrorHandler implements MiddlewareInterface
     /** @var string */
     protected $viewPrefix = 'errors/';
 
+    /**
+     * A list of inputs that are not saved from form input
+     *
+     * @var array
+     */
+    protected $formIgnore = [
+        'password',
+        'password_confirmation',
+    ];
+
     /**
      * @param TwigLoader $loader
      */
@@ -43,6 +56,21 @@ class ErrorHandler implements MiddlewareInterface
             $response = $handler->handle($request);
         } catch (HttpException $e) {
             $response = $this->createResponse($e->getMessage(), $e->getStatusCode(), $e->getHeaders());
+        } catch (ValidationException $e) {
+            $response = $this->createResponse('', 302, ['Location' => $this->getPreviousUrl($request)]);
+
+            if ($request instanceof Request) {
+                $session = $request->getSession();
+                $session->set(
+                    'errors',
+                    array_merge_recursive(
+                        $session->get('errors', []),
+                        ['validation' => $e->getValidator()->getErrors()]
+                    )
+                );
+
+                $session->set('form-data', Arr::except($request->request->all(), $this->formIgnore));
+            }
         }
 
         $statusCode = $response->getStatusCode();
@@ -106,4 +134,17 @@ class ErrorHandler implements MiddlewareInterface
     {
         return response($content, $status, $headers);
     }
+
+    /**
+     * @param ServerRequestInterface $request
+     * @return string
+     */
+    protected function getPreviousUrl(ServerRequestInterface $request)
+    {
+        if ($header = $request->getHeader('referer')) {
+            return array_pop($header);
+        }
+
+        return '/';
+    }
 }

src/Middleware/LegacyMiddleware.php

@@ -3,7 +3,7 @@
 namespace Engelsystem\Middleware;
 
 use Engelsystem\Helpers\Authenticator;
-use Engelsystem\Helpers\Translator;
+use Engelsystem\Helpers\Translation\Translator;
 use Engelsystem\Http\Request;
 use Engelsystem\Http\Response;
 use Psr\Container\ContainerInterface;
@@ -19,7 +19,6 @@ class LegacyMiddleware implements MiddlewareInterface
         'angeltypes',
         'atom',
         'ical',
-        'login',
         'public_dashboard',
         'rooms',
         'shift_entries',
@@ -175,10 +174,6 @@ class LegacyMiddleware implements MiddlewareInterface
                 $title = settings_title();
                 $content = user_settings();
                 return [$title, $content];
-            case 'login':
-                $title = login_title();
-                $content = guest_login();
-                return [$title, $content];
             case 'register':
                 $title = register_title();
                 $content = guest_register();

src/Middleware/SetLocale.php

@@ -2,7 +2,7 @@
 
 namespace Engelsystem\Middleware;
 
-use Engelsystem\Helpers\Translator;
+use Engelsystem\Helpers\Translation\Translator;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Server\MiddlewareInterface;

src/Renderer/Engine.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Engelsystem\Renderer;
+
+abstract class Engine implements EngineInterface
+{
+    /** @var array */
+    protected $sharedData = [];
+
+    /**
+     * @param mixed[]|string $key
+     * @param null           $value
+     */
+    public function share($key, $value = null)
+    {
+        if (!is_array($key)) {
+            $key = [$key => $value];
+        }
+
+        $this->sharedData = array_replace_recursive($this->sharedData, $key);
+    }
+}

src/Renderer/EngineInterface.php

@@ -11,11 +11,17 @@ interface EngineInterface
      * @param mixed[] $data
      * @return string
      */
-    public function get($path, $data = []);
+    public function get(string $path, array $data = []): string;
 
     /**
      * @param string $path
      * @return bool
      */
-    public function canRender($path);
+    public function canRender(string $path): bool;
+
+    /**
+     * @param string|mixed[] $key
+     * @param mixed          $value
+     */
+    public function share($key, $value = null);
 }

src/Renderer/HtmlEngine.php

@@ -2,7 +2,7 @@
 
 namespace Engelsystem\Renderer;
 
-class HtmlEngine implements EngineInterface
+class HtmlEngine extends Engine
 {
     /**
      * Render a template
@@ -11,9 +11,11 @@ class HtmlEngine implements EngineInterface
      * @param mixed[] $data
      * @return string
      */
-    public function get($path, $data = [])
+    public function get(string $path, array $data = []): string
     {
+        $data = array_replace_recursive($this->sharedData, $data);
         $template = file_get_contents($path);
+
         if (is_array($data)) {
             foreach ($data as $name => $content) {
                 $template = str_replace('%' . $name . '%', $content, $template);
@@ -27,7 +29,7 @@ class HtmlEngine implements EngineInterface
      * @param string $path
      * @return bool
      */
-    public function canRender($path)
+    public function canRender(string $path): bool
     {
         return mb_strpos($path, '.htm') !== false && file_exists($path);
     }

src/Renderer/Twig/Extensions/Translation.php

@@ -2,7 +2,7 @@
 
 namespace Engelsystem\Renderer\Twig\Extensions;
 
-use Engelsystem\Helpers\Translator;
+use Engelsystem\Helpers\Translation\Translator;
 use Twig_Extension as TwigExtension;
 use Twig_Extensions_TokenParser_Trans as TranslationTokenParser;
 use Twig_Filter as TwigFilter;

src/Renderer/TwigEngine.php

@@ -7,7 +7,7 @@ use Twig_Error_Loader as LoaderError;
 use Twig_Error_Runtime as RuntimeError;
 use Twig_Error_Syntax as SyntaxError;
 
-class TwigEngine implements EngineInterface
+class TwigEngine extends Engine
 {
     /** @var Twig */
     protected $twig;
@@ -25,8 +25,10 @@ class TwigEngine implements EngineInterface
      * @return string
      * @throws LoaderError|RuntimeError|SyntaxError
      */
-    public function get($path, $data = [])
+    public function get(string $path, array $data = []): string
     {
+        $data = array_replace_recursive($this->sharedData, $data);
+
         return $this->twig->render($path, $data);
     }
 
@@ -34,7 +36,7 @@ class TwigEngine implements EngineInterface
      * @param string $path
      * @return bool
      */
-    public function canRender($path)
+    public function canRender(string $path): bool
     {
         return $this->twig->getLoader()->exists($path);
     }

src/helpers.php

@@ -4,7 +4,7 @@
 use Engelsystem\Application;
 use Engelsystem\Config\Config;
 use Engelsystem\Helpers\Authenticator;
-use Engelsystem\Helpers\Translator;
+use Engelsystem\Helpers\Translation\Translator;
 use Engelsystem\Http\Request;
 use Engelsystem\Http\Response;
 use Engelsystem\Http\UrlGeneratorInterface;

tests/Unit/Controllers/AuthControllerTest.php

@@ -3,40 +3,166 @@
 namespace Engelsystem\Test\Unit\Controllers;
 
 use Engelsystem\Controllers\AuthController;
+use Engelsystem\Helpers\Authenticator;
+use Engelsystem\Http\Exceptions\ValidationException;
+use Engelsystem\Http\Request;
 use Engelsystem\Http\Response;
 use Engelsystem\Http\UrlGeneratorInterface;
+use Engelsystem\Http\Validation\Validator;
+use Engelsystem\Models\User\Settings;
+use Engelsystem\Models\User\User;
+use Engelsystem\Test\Unit\HasDatabase;
+use Illuminate\Support\Collection;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Session\Session;
 use Symfony\Component\HttpFoundation\Session\SessionInterface;
+use Symfony\Component\HttpFoundation\Session\Storage\MockArraySessionStorage;
 
 class AuthControllerTest extends TestCase
 {
+    use HasDatabase;
+
     /**
      * @covers \Engelsystem\Controllers\AuthController::__construct
-     * @covers \Engelsystem\Controllers\AuthController::logout
+     * @covers \Engelsystem\Controllers\AuthController::login
+     * @covers \Engelsystem\Controllers\AuthController::showLogin
      */
-    public function testLogout()
+    public function testLogin()
     {
         /** @var Response|MockObject $response */
         $response = $this->createMock(Response::class);
         /** @var SessionInterface|MockObject $session */
-        $session = $this->getMockForAbstractClass(SessionInterface::class);
         /** @var UrlGeneratorInterface|MockObject $url */
-        $url = $this->getMockForAbstractClass(UrlGeneratorInterface::class);
+        /** @var Authenticator|MockObject $auth */
+        list(, $session, $url, $auth) = $this->getMocks();
+
+        $session->expects($this->once())
+            ->method('get')
+            ->with('errors', [])
+            ->willReturn(['foo' => 'bar']);
+        $response->expects($this->once())
+            ->method('withView')
+            ->with('pages/login')
+            ->willReturn($response);
+
+        $controller = new AuthController($response, $session, $url, $auth);
+        $controller->login();
+    }
+
+    /**
+     * @covers \Engelsystem\Controllers\AuthController::postLogin
+     */
+    public function testPostLogin()
+    {
+        $this->initDatabase();
+
+        $request = new Request();
+        /** @var Response|MockObject $response */
+        $response = $this->createMock(Response::class);
+        /** @var UrlGeneratorInterface|MockObject $url */
+        /** @var Authenticator|MockObject $auth */
+        list(, , $url, $auth) = $this->getMocks();
+        $session = new Session(new MockArraySessionStorage());
+        /** @var Validator|MockObject $validator */
+        $validator = new Validator();
+
+        $user = new User([
+            'name'          => 'foo',
+            'password'      => '',
+            'email'         => '',
+            'api_key'       => '',
+            'last_login_at' => null,
+        ]);
+        $user->forceFill(['id' => 42]);
+        $user->save();
+
+        $settings = new Settings(['language' => 'de_DE', 'theme' => '']);
+        $settings->user()
+            ->associate($user)
+            ->save();
+
+        $auth->expects($this->exactly(2))
+            ->method('authenticate')
+            ->with('foo', 'bar')
+            ->willReturnOnConsecutiveCalls(null, $user);
+
+        $response->expects($this->once())
+            ->method('withView')
+            ->with('pages/login', ['errors' => Collection::make(['auth.not-found']), 'show_password_recovery' => true])
+            ->willReturn($response);
+        $response->expects($this->once())
+            ->method('redirectTo')
+            ->with('news')
+            ->willReturn($response);
+
+        // No credentials
+        $controller = new AuthController($response, $session, $url, $auth);
+        $controller->setValidator($validator);
+        try {
+            $controller->postLogin($request);
+            $this->fail('Login without credentials possible');
+        } catch (ValidationException $e) {
+        }
+
+        // Missing password
+        $request = new Request([], ['login' => 'foo']);
+        try {
+            $controller->postLogin($request);
+            $this->fail('Login without password possible');
+        } catch (ValidationException $e) {
+        }
+
+        // No user found
+        $request = new Request([], ['login' => 'foo', 'password' => 'bar']);
+        $controller->postLogin($request);
+        $this->assertEquals([], $session->all());
+
+        // Authenticated user
+        $controller->postLogin($request);
+
+        $this->assertNotNull($user->last_login_at);
+        $this->assertEquals(['user_id' => 42, 'locale' => 'de_DE'], $session->all());
+    }
+
+    /**
+     * @covers \Engelsystem\Controllers\AuthController::logout
+     */
+    public function testLogout()
+    {
+        /** @var Response $response */
+        /** @var SessionInterface|MockObject $session */
+        /** @var UrlGeneratorInterface|MockObject $url */
+        /** @var Authenticator|MockObject $auth */
+        list($response, $session, $url, $auth) = $this->getMocks();
 
         $session->expects($this->once())
             ->method('invalidate');
 
-        $response->expects($this->once())
-            ->method('redirectTo')
-            ->with('https://foo.bar/');
-
         $url->expects($this->once())
             ->method('to')
             ->with('/')
             ->willReturn('https://foo.bar/');
 
-        $controller = new AuthController($response, $session, $url);
-        $controller->logout();
+        $controller = new AuthController($response, $session, $url, $auth);
+        $return = $controller->logout();
+
+        $this->assertEquals(['https://foo.bar/'], $return->getHeader('location'));
+    }
+
+    /**
+     * @return array
+     */
+    protected function getMocks()
+    {
+        $response = new Response();
+        /** @var SessionInterface|MockObject $session */
+        $session = $this->getMockForAbstractClass(SessionInterface::class);
+        /** @var UrlGeneratorInterface|MockObject $url */
+        $url = $this->getMockForAbstractClass(UrlGeneratorInterface::class);
+        /** @var Authenticator|MockObject $auth */
+        $auth = $this->createMock(Authenticator::class);
+
+        return [$response, $session, $url, $auth];
     }
 }

tests/Unit/Controllers/BaseControllerTest.php

@@ -21,5 +21,7 @@ class BaseControllerTest extends TestCase
                 'dolor',
             ],
         ], $controller->getPermissions());
+
+        $this->assertTrue(method_exists($controller, 'setValidator'));
     }
 }

tests/Unit/Controllers/Metrics/MetricsEngineTest.php

@@ -66,4 +66,15 @@ class MetricsEngineTest extends TestCase
         $this->assertFalse($engine->canRender('/metrics.foo'));
         $this->assertTrue($engine->canRender('/metrics'));
     }
+
+    /**
+     * @covers \Engelsystem\Controllers\Metrics\MetricsEngine::share
+     */
+    public function testShare()
+    {
+        $engine = new MetricsEngine();
+
+        $engine->share('foo', 42);
+        $this->assertEquals('', $engine->get('/metrics'));
+    }
 }

tests/Unit/Controllers/Stub/ControllerImplementation.php

@@ -14,12 +14,4 @@ class ControllerImplementation extends BaseController
             'dolor',
         ],
     ];
-
-    /**
-     * @param array $permissions
-     */
-    public function setPermissions(array $permissions)
-    {
-        $this->permissions = $permissions;
-    }
 }

tests/Unit/Helpers/AuthenticatorServiceProviderTest.php

@@ -3,6 +3,7 @@
 namespace Engelsystem\Test\Unit\Helpers;
 
 use Engelsystem\Application;
+use Engelsystem\Config\Config;
 use Engelsystem\Helpers\Authenticator;
 use Engelsystem\Helpers\AuthenticatorServiceProvider;
 use Engelsystem\Http\Request;
@@ -19,11 +20,19 @@ class AuthenticatorServiceProviderTest extends ServiceProviderTest
         $app = new Application();
         $app->bind(ServerRequestInterface::class, Request::class);
 
+        $config = new Config();
+        $config->set('password_algorithm', PASSWORD_DEFAULT);
+        $app->instance('config', $config);
+
         $serviceProvider = new AuthenticatorServiceProvider($app);
         $serviceProvider->register();
 
         $this->assertInstanceOf(Authenticator::class, $app->get(Authenticator::class));
         $this->assertInstanceOf(Authenticator::class, $app->get('authenticator'));
         $this->assertInstanceOf(Authenticator::class, $app->get('auth'));
+
+        /** @var Authenticator $auth */
+        $auth = $app->get(Authenticator::class);
+        $this->assertEquals(PASSWORD_DEFAULT, $auth->getPasswordAlgorithm());
     }
 }

tests/Unit/Helpers/AuthenticatorTest.php

@@ -4,6 +4,7 @@ namespace Engelsystem\Test\Unit\Helpers;
 
 use Engelsystem\Helpers\Authenticator;
 use Engelsystem\Models\User\User;
+use Engelsystem\Test\Unit\HasDatabase;
 use Engelsystem\Test\Unit\Helpers\Stub\UserModelImplementation;
 use Engelsystem\Test\Unit\ServiceProviderTest;
 use PHPUnit\Framework\MockObject\MockObject;
@@ -12,6 +13,8 @@ use Symfony\Component\HttpFoundation\Session\Session;
 
 class AuthenticatorTest extends ServiceProviderTest
 {
+    use HasDatabase;
+
     /**
      * @covers \Engelsystem\Helpers\Authenticator::__construct(
      * @covers \Engelsystem\Helpers\Authenticator::user
@@ -29,7 +32,7 @@ class AuthenticatorTest extends ServiceProviderTest
 
         $session->expects($this->exactly(3))
             ->method('get')
-            ->with('uid')
+            ->with('user_id')
             ->willReturnOnConsecutiveCalls(
                 null,
                 42,
@@ -114,16 +117,13 @@ class AuthenticatorTest extends ServiceProviderTest
         /** @var User|MockObject $user */
         $user = $this->createMock(User::class);
 
-        $user->expects($this->once())
-            ->method('save');
-
-        $session->expects($this->exactly(2))
+        $session->expects($this->once())
             ->method('get')
-            ->with('uid')
+            ->with('user_id')
             ->willReturn(42);
         $session->expects($this->once())
             ->method('remove')
-            ->with('uid');
+            ->with('user_id');
 
         /** @var Authenticator|MockObject $auth */
         $auth = $this->getMockBuilder(Authenticator::class)
@@ -151,4 +151,115 @@ class AuthenticatorTest extends ServiceProviderTest
         // Permissions cached
         $this->assertTrue($auth->can('bar'));
     }
+
+    /**
+     * @covers \Engelsystem\Helpers\Authenticator::authenticate
+     */
+    public function testAuthenticate()
+    {
+        $this->initDatabase();
+
+        /** @var ServerRequestInterface|MockObject $request */
+        $request = $this->getMockForAbstractClass(ServerRequestInterface::class);
+        /** @var Session|MockObject $session */
+        $session = $this->createMock(Session::class);
+        $userRepository = new User();
+
+        (new User([
+            'name'     => 'lorem',
+            'password' => password_hash('testing', PASSWORD_DEFAULT),
+            'email'    => 'lorem@foo.bar',
+            'api_key'  => '',
+        ]))->save();
+        (new User([
+            'name'     => 'ipsum',
+            'password' => '',
+            'email'    => 'ipsum@foo.bar',
+            'api_key'  => '',
+        ]))->save();
+
+        $auth = new Authenticator($request, $session, $userRepository);
+        $this->assertNull($auth->authenticate('not-existing', 'foo'));
+        $this->assertNull($auth->authenticate('ipsum', 'wrong-password'));
+        $this->assertInstanceOf(User::class, $auth->authenticate('lorem', 'testing'));
+        $this->assertInstanceOf(User::class, $auth->authenticate('lorem@foo.bar', 'testing'));
+    }
+
+    /**
+     * @covers \Engelsystem\Helpers\Authenticator::verifyPassword
+     */
+    public function testVerifyPassword()
+    {
+        $this->initDatabase();
+        $password = password_hash('testing', PASSWORD_ARGON2I);
+        $user = new User([
+            'name'     => 'lorem',
+            'password' => $password,
+            'email'    => 'lorem@foo.bar',
+            'api_key'  => '',
+        ]);
+        $user->save();
+
+        /** @var Authenticator|MockObject $auth */
+        $auth = $this->getMockBuilder(Authenticator::class)
+            ->disableOriginalConstructor()
+            ->setMethods(['setPassword'])
+            ->getMock();
+
+        $auth->expects($this->once())
+            ->method('setPassword')
+            ->with($user, 'testing');
+        $auth->setPasswordAlgorithm(PASSWORD_BCRYPT);
+
+        $this->assertFalse($auth->verifyPassword($user, 'randomStuff'));
+        $this->assertTrue($auth->verifyPassword($user, 'testing'));
+    }
+
+    /**
+     * @covers \Engelsystem\Helpers\Authenticator::setPassword
+     */
+    public function testSetPassword()
+    {
+        $this->initDatabase();
+        $user = new User([
+            'name'     => 'ipsum',
+            'password' => '',
+            'email'    => 'ipsum@foo.bar',
+            'api_key'  => '',
+        ]);
+        $user->save();
+
+        $auth = $this->getAuthenticator();
+        $auth->setPasswordAlgorithm(PASSWORD_ARGON2I);
+
+        $auth->setPassword($user, 'FooBar');
+        $this->assertTrue($user->isClean());
+
+        $this->assertTrue(password_verify('FooBar', $user->password));
+        $this->assertFalse(password_needs_rehash($user->password, PASSWORD_ARGON2I));
+    }
+
+    /**
+     * @covers \Engelsystem\Helpers\Authenticator::setPasswordAlgorithm
+     * @covers \Engelsystem\Helpers\Authenticator::getPasswordAlgorithm
+     */
+    public function testPasswordAlgorithm()
+    {
+        $auth = $this->getAuthenticator();
+
+        $auth->setPasswordAlgorithm(PASSWORD_ARGON2I);
+        $this->assertEquals(PASSWORD_ARGON2I, $auth->getPasswordAlgorithm());
+    }
+
+    /**
+     * @return Authenticator
+     */
+    protected function getAuthenticator()
+    {
+        return new class extends Authenticator
+        {
+            /** @noinspection PhpMissingParentConstructorInspection */
+            public function __construct() { }
+        };
+    }
 }

tests/Unit/Helpers/Translation/Assets/fo_OO/default.po

@@ -0,0 +1,3 @@
+# Testing content
+msgid "foo.bar"
+msgstr "Foo Bar!"

tests/Unit/Helpers/Translation/GettextTranslatorTest.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Helpers\Translation;
+
+use Engelsystem\Helpers\Translation\GettextTranslator;
+use Engelsystem\Helpers\Translation\TranslationNotFound;
+use Engelsystem\Test\Unit\ServiceProviderTest;
+use Gettext\Translation;
+use Gettext\Translations;
+
+class GettextTranslatorTest extends ServiceProviderTest
+{
+    /**
+     * @covers \Engelsystem\Helpers\Translation\GettextTranslator::assertHasTranslation()
+     */
+    public function testNoTranslation()
+    {
+        $translations = $this->getTranslations();
+
+        $translator = new GettextTranslator();
+        $translator->loadTranslations($translations);
+
+        $this->assertEquals('Translation!', $translator->gettext('test.value'));
+
+        $this->expectException(TranslationNotFound::class);
+        $this->expectExceptionMessage('//foo.bar');
+
+        $translator->gettext('foo.bar');
+    }
+
+    /**
+     * @covers \Engelsystem\Helpers\Translation\GettextTranslator::dpgettext()
+     */
+    public function testDpgettext()
+    {
+        $translations = $this->getTranslations();
+
+        $translator = new GettextTranslator();
+        $translator->loadTranslations($translations);
+
+        $this->assertEquals('Translation!', $translator->dpgettext(null, null, 'test.value'));
+    }
+
+    /**
+     * @covers \Engelsystem\Helpers\Translation\GettextTranslator::dnpgettext()
+     */
+    public function testDnpgettext()
+    {
+        $translations = $this->getTranslations();
+
+        $translator = new GettextTranslator();
+        $translator->loadTranslations($translations);
+
+        $this->assertEquals('Translations!', $translator->dnpgettext(null, null, 'test.value', 'test.values', 2));
+    }
+
+    protected function getTranslations(): Translations
+    {
+        $translations = new Translations();
+        $translations[] =
+            (new Translation(null, 'test.value', 'test.values'))
+                ->setTranslation('Translation!')
+                ->setPluralTranslations(['Translations!']);
+
+        return $translations;
+    }
+}

tests/Unit/Helpers/Translation/TranslationServiceProviderTest.php

@@ -1,10 +1,10 @@
 <?php
 
-namespace Engelsystem\Test\Unit\Helpers;
+namespace Engelsystem\Test\Unit\Helpers\Translation;
 
 use Engelsystem\Config\Config;
-use Engelsystem\Helpers\TranslationServiceProvider;
-use Engelsystem\Helpers\Translator;
+use Engelsystem\Helpers\Translation\TranslationServiceProvider;
+use Engelsystem\Helpers\Translation\Translator;
 use Engelsystem\Test\Unit\ServiceProviderTest;
 use PHPUnit\Framework\MockObject\MockObject;
 use Symfony\Component\HttpFoundation\Session\Session;
@@ -12,13 +12,16 @@ use Symfony\Component\HttpFoundation\Session\Session;
 class TranslationServiceProviderTest extends ServiceProviderTest
 {
     /**
-     * @covers \Engelsystem\Helpers\TranslationServiceProvider::register()
+     * @covers \Engelsystem\Helpers\Translation\TranslationServiceProvider::register()
      */
-    public function testRegister()
+    public function testRegister(): void
     {
+        $defaultLocale = 'fo_OO';
+        $locale = 'te_ST.WTF-9';
+        $locales = ['fo_OO' => 'Foo', 'fo_OO.BAR' => 'Foo (Bar)', 'te_ST.WTF-9' => 'WTF\'s Testing?'];
+        $config = new Config(['locales' => $locales, 'default_locale' => $defaultLocale]);
+
         $app = $this->getApp(['make', 'instance', 'get']);
-        /** @var Config|MockObject $config */
-        $config = $this->createMock(Config::class);
         /** @var Session|MockObject $session */
         $session = $this->createMock(Session::class);
         /** @var Translator|MockObject $translator */
@@ -27,31 +30,14 @@ class TranslationServiceProviderTest extends ServiceProviderTest
         /** @var TranslationServiceProvider|MockObject $serviceProvider */
         $serviceProvider = $this->getMockBuilder(TranslationServiceProvider::class)
             ->setConstructorArgs([$app])
-            ->setMethods(['initGettext', 'setLocale'])
+            ->setMethods(['setLocale'])
             ->getMock();
 
-        $serviceProvider->expects($this->once())
-            ->method('initGettext');
-
         $app->expects($this->exactly(2))
             ->method('get')
             ->withConsecutive(['config'], ['session'])
             ->willReturnOnConsecutiveCalls($config, $session);
 
-        $defaultLocale = 'fo_OO';
-        $locale = 'te_ST.WTF-9';
-        $locales = ['fo_OO' => 'Foo', 'fo_OO.BAR' => 'Foo (Bar)', 'te_ST.WTF-9' => 'WTF\'s Testing?'];
-        $config->expects($this->exactly(2))
-            ->method('get')
-            ->withConsecutive(
-                ['locales'],
-                ['default_locale']
-            )
-            ->willReturnOnConsecutiveCalls(
-                $locales,
-                $defaultLocale
-            );
-
         $session->expects($this->once())
             ->method('get')
             ->with('locale', $defaultLocale)
@@ -67,6 +53,8 @@ class TranslationServiceProviderTest extends ServiceProviderTest
                 [
                     'locale'                => $locale,
                     'locales'               => $locales,
+                    'fallbackLocale'        => 'en_US',
+                    'getTranslatorCallback' => [$serviceProvider, 'getTranslator'],
                     'localeChangeCallback'  => [$serviceProvider, 'setLocale'],
                 ]
             )
@@ -81,4 +69,22 @@ class TranslationServiceProviderTest extends ServiceProviderTest
 
         $serviceProvider->register();
     }
+
+    /**
+     * @covers \Engelsystem\Helpers\Translation\TranslationServiceProvider::getTranslator()
+     */
+    public function testGetTranslator(): void
+    {
+        $app = $this->getApp(['get']);
+        $serviceProvider = new TranslationServiceProvider($app);
+
+        $this->setExpects($app, 'get', ['path.lang'], __DIR__ . '/Assets');
+
+        // Get translator
+        $translator = $serviceProvider->getTranslator('fo_OO');
+        $this->assertEquals('Foo Bar!', $translator->gettext('foo.bar'));
+
+        // Retry from cache
+        $serviceProvider->getTranslator('fo_OO');
+    }
 }

tests/Unit/Helpers/Translation/TranslatorTest.php

@@ -0,0 +1,134 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Helpers\Translation;
+
+use Engelsystem\Helpers\Translation\GettextTranslator;
+use Engelsystem\Helpers\Translation\TranslationNotFound;
+use Engelsystem\Helpers\Translation\Translator;
+use Engelsystem\Test\Unit\ServiceProviderTest;
+use PHPUnit\Framework\MockObject\MockObject;
+use stdClass;
+
+class TranslatorTest extends ServiceProviderTest
+{
+    /**
+     * @covers \Engelsystem\Helpers\Translation\Translator::__construct
+     * @covers \Engelsystem\Helpers\Translation\Translator::getLocale
+     * @covers \Engelsystem\Helpers\Translation\Translator::getLocales
+     * @covers \Engelsystem\Helpers\Translation\Translator::hasLocale
+     * @covers \Engelsystem\Helpers\Translation\Translator::setLocale
+     * @covers \Engelsystem\Helpers\Translation\Translator::setLocales
+     */
+    public function testInit()
+    {
+        $locales = ['te_ST' => 'Tests', 'fo_OO' => 'SomeFOO'];
+        $locale = 'te_ST';
+
+        /** @var callable|MockObject $localeChange */
+        $localeChange = $this->getMockBuilder(stdClass::class)
+            ->setMethods(['__invoke'])
+            ->getMock();
+        $localeChange->expects($this->exactly(2))
+            ->method('__invoke')
+            ->withConsecutive(['te_ST'], ['fo_OO']);
+
+        $translator = new Translator($locale, 'fo_OO', function () { }, $locales, $localeChange);
+
+        $this->assertEquals($locales, $translator->getLocales());
+        $this->assertEquals($locale, $translator->getLocale());
+
+        $translator->setLocale('fo_OO');
+        $this->assertEquals('fo_OO', $translator->getLocale());
+
+        $newLocales = ['lo_RM' => 'Lorem', 'ip_SU-M' => 'Ipsum'];
+        $translator->setLocales($newLocales);
+        $this->assertEquals($newLocales, $translator->getLocales());
+
+        $this->assertTrue($translator->hasLocale('ip_SU-M'));
+        $this->assertFalse($translator->hasLocale('te_ST'));
+    }
+
+    /**
+     * @covers \Engelsystem\Helpers\Translation\Translator::translate
+     */
+    public function testTranslate()
+    {
+        /** @var Translator|MockObject $translator */
+        $translator = $this->getMockBuilder(Translator::class)
+            ->setConstructorArgs(['de_DE', 'en_US', function () { }, ['de_DE' => 'Deutsch']])
+            ->setMethods(['translateText'])
+            ->getMock();
+        $translator->expects($this->exactly(2))
+            ->method('translateText')
+            ->withConsecutive(['gettext', ['Hello!'], []], ['gettext', ['My favourite number is %u!'], [3]])
+            ->willReturnOnConsecutiveCalls('Hallo!', 'Meine Lieblingszahl ist die 3!');
+
+        $return = $translator->translate('Hello!');
+        $this->assertEquals('Hallo!', $return);
+
+        $return = $translator->translate('My favourite number is %u!', [3]);
+        $this->assertEquals('Meine Lieblingszahl ist die 3!', $return);
+    }
+
+    /**
+     * @covers \Engelsystem\Helpers\Translation\Translator::translatePlural
+     */
+    public function testTranslatePlural()
+    {
+        /** @var Translator|MockObject $translator */
+        $translator = $this->getMockBuilder(Translator::class)
+            ->setConstructorArgs(['de_DE', 'en_US', function () { }, ['de_DE' => 'Deutsch']])
+            ->setMethods(['translateText'])
+            ->getMock();
+        $translator->expects($this->once())
+            ->method('translateText')
+            ->with('ngettext', ['%s apple', '%s apples', 2], [2])
+            ->willReturn('2 Äpfel');
+
+        $return = $translator->translatePlural('%s apple', '%s apples', 2, [2]);
+        $this->assertEquals('2 Äpfel', $return);
+    }
+
+    /**
+     * @covers \Engelsystem\Helpers\Translation\Translator::translatePlural
+     * @covers \Engelsystem\Helpers\Translation\Translator::translateText
+     * @covers \Engelsystem\Helpers\Translation\Translator::replaceText
+     */
+    public function testReplaceText()
+    {
+        /** @var GettextTranslator|MockObject $gtt */
+        $gtt = $this->createMock(GettextTranslator::class);
+        /** @var callable|MockObject $getTranslator */
+        $getTranslator = $this->getMockBuilder(stdClass::class)
+            ->setMethods(['__invoke'])
+            ->getMock();
+        $getTranslator->expects($this->exactly(5))
+            ->method('__invoke')
+            ->withConsecutive(['te_ST'], ['fo_OO'], ['te_ST'], ['fo_OO'], ['te_ST'])
+            ->willReturn($gtt);
+
+        $i = 0;
+        $gtt->expects($this->exactly(4))
+            ->method('gettext')
+            ->willReturnCallback(function () use (&$i) {
+                $i++;
+                if ($i != 4) {
+                    throw new TranslationNotFound();
+                }
+
+                return 'Lorem %s???';
+            });
+        $this->setExpects($gtt, 'ngettext', ['foo.barf'], 'Lorem %s!');
+
+        $translator = new Translator('te_ST', 'fo_OO', $getTranslator, ['te_ST' => 'Test', 'fo_OO' => 'Foo']);
+
+        // No translation
+        $this->assertEquals('foo.bar', $translator->translate('foo.bar'));
+
+        // Fallback translation
+        $this->assertEquals('Lorem test2???', $translator->translate('foo.batz', ['test2']));
+
+        // Successful translation
+        $this->assertEquals('Lorem test3!', $translator->translatePlural('foo.barf', 'foo.bar2', 3, ['test3']));
+    }
+}

tests/Unit/Helpers/TranslatorTest.php

@@ -1,90 +0,0 @@
-<?php
-
-namespace Engelsystem\Test\Unit\Helpers;
-
-use Engelsystem\Helpers\Translator;
-use Engelsystem\Test\Unit\ServiceProviderTest;
-use PHPUnit\Framework\MockObject\MockObject;
-use stdClass;
-
-class TranslatorTest extends ServiceProviderTest
-{
-    /**
-     * @covers \Engelsystem\Helpers\Translator::__construct
-     * @covers \Engelsystem\Helpers\Translator::getLocale
-     * @covers \Engelsystem\Helpers\Translator::getLocales
-     * @covers \Engelsystem\Helpers\Translator::hasLocale
-     * @covers \Engelsystem\Helpers\Translator::setLocale
-     * @covers \Engelsystem\Helpers\Translator::setLocales
-     */
-    public function testInit()
-    {
-        $locales = ['te_ST.ER-01' => 'Tests', 'fo_OO' => 'SomeFOO'];
-        $locale = 'te_ST.ER-01';
-
-        /** @var callable|MockObject $callable */
-        $callable = $this->getMockBuilder(stdClass::class)
-            ->setMethods(['__invoke'])
-            ->getMock();
-        $callable->expects($this->exactly(2))
-            ->method('__invoke')
-            ->withConsecutive(['te_ST.ER-01'], ['fo_OO']);
-
-        $translator = new Translator($locale, $locales, $callable);
-
-        $this->assertEquals($locales, $translator->getLocales());
-        $this->assertEquals($locale, $translator->getLocale());
-
-        $translator->setLocale('fo_OO');
-        $this->assertEquals('fo_OO', $translator->getLocale());
-
-        $newLocales = ['lo_RM' => 'Lorem', 'ip_SU-M' => 'Ipsum'];
-        $translator->setLocales($newLocales);
-        $this->assertEquals($newLocales, $translator->getLocales());
-
-        $this->assertTrue($translator->hasLocale('ip_SU-M'));
-        $this->assertFalse($translator->hasLocale('te_ST.ER-01'));
-    }
-
-    /**
-     * @covers \Engelsystem\Helpers\Translator::replaceText
-     * @covers \Engelsystem\Helpers\Translator::translate
-     */
-    public function testTranslate()
-    {
-        /** @var Translator|MockObject $translator */
-        $translator = $this->getMockBuilder(Translator::class)
-            ->setConstructorArgs(['de_DE.UTF-8', ['de_DE.UTF-8' => 'Deutsch']])
-            ->setMethods(['translateGettext'])
-            ->getMock();
-        $translator->expects($this->exactly(2))
-            ->method('translateGettext')
-            ->withConsecutive(['Hello!'], ['My favourite number is %u!'])
-            ->willReturnOnConsecutiveCalls('Hallo!', 'Meine Lieblingszahl ist die %u!');
-
-        $return = $translator->translate('Hello!');
-        $this->assertEquals('Hallo!', $return);
-
-        $return = $translator->translate('My favourite number is %u!', [3]);
-        $this->assertEquals('Meine Lieblingszahl ist die 3!', $return);
-    }
-
-    /**
-     * @covers \Engelsystem\Helpers\Translator::translatePlural
-     */
-    public function testTranslatePlural()
-    {
-        /** @var Translator|MockObject $translator */
-        $translator = $this->getMockBuilder(Translator::class)
-            ->setConstructorArgs(['de_DE.UTF-8', ['de_DE.UTF-8' => 'Deutsch']])
-            ->setMethods(['translateGettextPlural'])
-            ->getMock();
-        $translator->expects($this->once())
-            ->method('translateGettextPlural')
-            ->with('%s apple', '%s apples', 2)
-            ->willReturn('2 Äpfel');
-
-        $return = $translator->translatePlural('%s apple', '%s apples', 2, [2]);
-        $this->assertEquals('2 Äpfel', $return);
-    }
-}

tests/Unit/HelpersTest.php

@@ -6,7 +6,7 @@ use Engelsystem\Application;
 use Engelsystem\Config\Config;
 use Engelsystem\Container\Container;
 use Engelsystem\Helpers\Authenticator;
-use Engelsystem\Helpers\Translator;
+use Engelsystem\Helpers\Translation\Translator;
 use Engelsystem\Http\Request;
 use Engelsystem\Http\Response;
 use Engelsystem\Http\UrlGeneratorInterface;

tests/Unit/Http/Exceptions/ValidationExceptionTest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Http\Exceptions;
+
+use Engelsystem\Http\Exceptions\ValidationException;
+use Engelsystem\Http\Validation\Validator;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+
+class ValidationExceptionTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Http\Exceptions\ValidationException::__construct
+     * @covers \Engelsystem\Http\Exceptions\ValidationException::getValidator
+     */
+    public function testConstruct()
+    {
+        /** @var Validator|MockObject $validator */
+        $validator = $this->createMock(Validator::class);
+
+        $exception = new ValidationException($validator);
+
+        $this->assertEquals($validator, $exception->getValidator());
+    }
+}

tests/Unit/Http/UrlGeneratorServiceProviderTest.php

@@ -19,7 +19,7 @@ class UrlGeneratorServiceProviderTest extends ServiceProviderTest
         $urlGenerator = $this->getMockBuilder(UrlGenerator::class)
             ->getMock();
 
-        $app = $this->getApp();
+        $app = $this->getApp(['make', 'instance', 'bind']);
 
         $this->setExpects($app, 'make', [UrlGenerator::class], $urlGenerator);
         $app->expects($this->exactly(2))
@@ -29,6 +29,9 @@ class UrlGeneratorServiceProviderTest extends ServiceProviderTest
                 ['http.urlGenerator', $urlGenerator],
                 [UrlGeneratorInterface::class, $urlGenerator]
             );
+        $app->expects($this->once())
+            ->method('bind')
+            ->with(UrlGeneratorInterface::class, UrlGenerator::class);
 
         $serviceProvider = new UrlGeneratorServiceProvider($app);
         $serviceProvider->register();

tests/Unit/Http/Validation/Rules/InTest.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Http\Validation\Rules;
+
+use Engelsystem\Http\Validation\Rules\In;
+use Engelsystem\Test\Unit\TestCase;
+
+class InTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Http\Validation\Rules\In::__construct
+     */
+    public function testConstruct()
+    {
+        $rule = new In('foo,bar');
+
+        $this->assertEquals(['foo', 'bar'], $rule->haystack);
+    }
+}

tests/Unit/Http/Validation/Rules/NotInTest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Http\Validation\Rules;
+
+use Engelsystem\Http\Validation\Rules\NotIn;
+use Engelsystem\Test\Unit\TestCase;
+
+class NotInTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Http\Validation\Rules\NotIn::validate
+     */
+    public function testConstruct()
+    {
+        $rule = new NotIn('foo,bar');
+
+        $this->assertTrue($rule->validate('lorem'));
+        $this->assertFalse($rule->validate('foo'));
+    }
+}

tests/Unit/Http/Validation/Stub/ValidatesRequestImplementation.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Http\Validation\Stub;
+
+use Engelsystem\Controllers\BaseController;
+use Engelsystem\Http\Request;
+
+class ValidatesRequestImplementation extends BaseController
+{
+    /**
+     * @param Request $request
+     * @param array   $rules
+     * @return array
+     */
+    public function validateData(Request $request, array $rules)
+    {
+        return $this->validate($request, $rules);
+    }
+
+    /**
+     * @return bool
+     */
+    public function hasValidator()
+    {
+        return !is_null($this->validator);
+    }
+}

tests/Unit/Http/Validation/ValidatesRequestTest.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Http\Validation;
+
+use Engelsystem\Http\Exceptions\ValidationException;
+use Engelsystem\Http\Request;
+use Engelsystem\Http\Validation\Validator;
+use Engelsystem\Test\Unit\Http\Validation\Stub\ValidatesRequestImplementation;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+
+class ValidatesRequestTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Http\Validation\ValidatesRequest::validate
+     * @covers \Engelsystem\Http\Validation\ValidatesRequest::setValidator
+     */
+    public function testValidate()
+    {
+        /** @var Validator|MockObject $validator */
+        $validator = $this->createMock(Validator::class);
+        $validator->expects($this->exactly(2))
+            ->method('validate')
+            ->withConsecutive(
+                [['foo' => 'bar'], ['foo' => 'required']],
+                [[], ['foo' => 'required']]
+            )
+            ->willReturnOnConsecutiveCalls(
+                true,
+                false
+            );
+        $validator->expects($this->once())
+            ->method('getData')
+            ->willReturn(['foo' => 'bar']);
+
+        $implementation = new ValidatesRequestImplementation();
+        $implementation->setValidator($validator);
+
+        $return = $implementation->validateData(new Request([], ['foo' => 'bar']), ['foo' => 'required']);
+
+        $this->assertEquals(['foo' => 'bar'], $return);
+
+        $this->expectException(ValidationException::class);
+        $implementation->validateData(new Request([], []), ['foo' => 'required']);
+    }
+}

tests/Unit/Http/Validation/ValidationServiceProviderTest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Http\Validation;
+
+use Engelsystem\Application;
+use Engelsystem\Http\Validation\ValidationServiceProvider;
+use Engelsystem\Http\Validation\Validator;
+use Engelsystem\Test\Unit\Http\Validation\Stub\ValidatesRequestImplementation;
+use Engelsystem\Test\Unit\ServiceProviderTest;
+use stdClass;
+
+class ValidationServiceProviderTest extends ServiceProviderTest
+{
+    /**
+     * @covers \Engelsystem\Http\Validation\ValidationServiceProvider::register
+     */
+    public function testRegister()
+    {
+        $app = new Application();
+
+        $serviceProvider = new ValidationServiceProvider($app);
+        $serviceProvider->register();
+
+        $this->assertTrue($app->has(Validator::class));
+        $this->assertTrue($app->has('validator'));
+
+        /** @var ValidatesRequestImplementation $validatesRequest */
+        $validatesRequest = $app->make(ValidatesRequestImplementation::class);
+        $this->assertTrue($validatesRequest->hasValidator());
+
+        // Test afterResolving early return
+        $app->make(stdClass::class);
+    }
+}

tests/Unit/Http/Validation/ValidatorTest.php

@@ -0,0 +1,142 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Http\Validation;
+
+use Engelsystem\Http\Validation\Validator;
+use InvalidArgumentException;
+use PHPUnit\Framework\TestCase;
+
+class ValidatorTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Http\Validation\Validator::validate
+     * @covers \Engelsystem\Http\Validation\Validator::getData
+     * @covers \Engelsystem\Http\Validation\Validator::getErrors
+     */
+    public function testValidate()
+    {
+        $val = new Validator();
+
+        $this->assertTrue($val->validate(
+            ['foo' => 'bar', 'lorem' => 'on', 'dolor' => 'bla'],
+            ['lorem' => 'accepted']
+        ));
+        $this->assertEquals(['lorem' => 'on'], $val->getData());
+
+        $this->assertFalse($val->validate(
+            [],
+            ['lorem' => 'required|min:3']
+        ));
+        $this->assertEquals(
+            ['lorem' => ['validation.lorem.required', 'validation.lorem.min']],
+            $val->getErrors()
+        );
+    }
+
+    /**
+     * @covers \Engelsystem\Http\Validation\Validator::validate
+     */
+    public function testValidateChaining()
+    {
+        $val = new Validator();
+
+        $this->assertTrue($val->validate(
+            ['lorem' => 10],
+            ['lorem' => 'required|min:3|max:10']
+        ));
+        $this->assertTrue($val->validate(
+            ['lorem' => 3],
+            ['lorem' => 'required|min:3|max:10']
+        ));
+
+        $this->assertFalse($val->validate(
+            ['lorem' => 2],
+            ['lorem' => 'required|min:3|max:10']
+        ));
+        $this->assertFalse($val->validate(
+            ['lorem' => 42],
+            ['lorem' => 'required|min:3|max:10']
+        ));
+    }
+
+    /**
+     * @covers \Engelsystem\Http\Validation\Validator::validate
+     */
+    public function testValidateNotImplemented()
+    {
+        $val = new Validator();
+
+        $this->expectException(InvalidArgumentException::class);
+
+        $val->validate(
+            ['lorem' => 'bar'],
+            ['foo' => 'never_implemented']
+        );
+    }
+
+    /**
+     * @covers \Engelsystem\Http\Validation\Validator::map
+     * @covers \Engelsystem\Http\Validation\Validator::mapBack
+     */
+    public function testValidateMapping()
+    {
+        $val = new Validator();
+
+        $this->assertTrue($val->validate(
+            ['foo' => 'bar'],
+            ['foo' => 'required']
+        ));
+        $this->assertTrue($val->validate(
+            ['foo' => '0'],
+            ['foo' => 'int']
+        ));
+        $this->assertTrue($val->validate(
+            ['foo' => 'on'],
+            ['foo' => 'accepted']
+        ));
+
+        $this->assertFalse($val->validate(
+            [],
+            ['lorem' => 'required']
+        ));
+        $this->assertEquals(
+            ['lorem' => ['validation.lorem.required']],
+            $val->getErrors()
+        );
+    }
+
+    /**
+     * @covers \Engelsystem\Http\Validation\Validator::validate
+     */
+    public function testValidateNesting()
+    {
+        $val = new Validator();
+
+        $this->assertTrue($val->validate(
+            [],
+            ['foo' => 'not|required']
+        ));
+
+        $this->assertTrue($val->validate(
+            ['foo' => 'foo'],
+            ['foo' => 'not|int']
+        ));
+        $this->assertFalse($val->validate(
+            ['foo' => 1],
+            ['foo' => 'not|int']
+        ));
+
+        $this->assertTrue($val->validate(
+            [],
+            ['foo' => 'optional|int']
+        ));
+        $this->assertTrue($val->validate(
+            ['foo' => '33'],
+            ['foo' => 'optional|int']
+        ));
+        $this->assertFalse($val->validate(
+            ['foo' => 'T'],
+            ['foo' => 'optional|int']
+        ));
+    }
+}

tests/Unit/Middleware/ErrorHandlerTest.php

@@ -2,14 +2,23 @@
 
 namespace Engelsystem\Test\Unit\Middleware;
 
+use Engelsystem\Application;
 use Engelsystem\Http\Exceptions\HttpException;
+use Engelsystem\Http\Exceptions\ValidationException;
+use Engelsystem\Http\Psr7ServiceProvider;
+use Engelsystem\Http\Request;
 use Engelsystem\Http\Response;
+use Engelsystem\Http\ResponseServiceProvider;
+use Engelsystem\Http\Validation\Validator;
 use Engelsystem\Middleware\ErrorHandler;
 use Engelsystem\Test\Unit\Middleware\Stub\ReturnResponseMiddlewareHandler;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use Symfony\Component\HttpFoundation\Session\Session;
+use Symfony\Component\HttpFoundation\Session\Storage\MockArraySessionStorage;
 use Twig_LoaderInterface as TwigLoader;
 
 class ErrorHandlerTest extends TestCase
@@ -104,7 +113,7 @@ class ErrorHandlerTest extends TestCase
     /**
      * @covers \Engelsystem\Middleware\ErrorHandler::process
      */
-    public function testProcessException()
+    public function testProcessHttpException()
     {
         /** @var ServerRequestInterface|MockObject $request */
         $request = $this->createMock(ServerRequestInterface::class);
@@ -144,6 +153,67 @@ class ErrorHandlerTest extends TestCase
         $this->assertEquals($psrResponse, $return);
     }
 
+    /**
+     * @covers \Engelsystem\Middleware\ErrorHandler::process
+     * @covers \Engelsystem\Middleware\ErrorHandler::getPreviousUrl
+     */
+    public function testProcessValidationException()
+    {
+        /** @var TwigLoader|MockObject $twigLoader */
+        $twigLoader = $this->createMock(TwigLoader::class);
+        $handler = $this->getMockForAbstractClass(RequestHandlerInterface::class);
+        $validator = $this->createMock(Validator::class);
+
+        $handler->expects($this->exactly(2))
+            ->method('handle')
+            ->willReturnCallback(function () use ($validator) {
+                throw new ValidationException($validator);
+            });
+
+        $validator->expects($this->exactly(2))
+            ->method('getErrors')
+            ->willReturn(['foo' => ['validation.foo.numeric']]);
+
+        $session = new Session(new MockArraySessionStorage());
+        $session->set('errors', ['validation' => ['foo' => ['validation.foo.required']]]);
+        $request = Request::create(
+            '/foo/bar',
+            'POST',
+            ['foo' => 'bar', 'password' => 'Test123', 'password_confirmation' => 'Test1234']
+        );
+        $request->setSession($session);
+
+        /** @var Application $app */
+        $app = app();
+        (new ResponseServiceProvider($app))->register();
+        (new Psr7ServiceProvider($app))->register();
+
+        $errorHandler = new ErrorHandler($twigLoader);
+
+        $return = $errorHandler->process($request, $handler);
+
+        $this->assertEquals(302, $return->getStatusCode());
+        $this->assertEquals('/', $return->getHeaderLine('location'));
+        $this->assertEquals([
+            'errors'    => [
+                'validation' => [
+                    'foo' => [
+                        'validation.foo.required',
+                        'validation.foo.numeric',
+                    ],
+                ],
+            ],
+            'form-data' => [
+                'foo' => 'bar',
+            ],
+        ], $session->all());
+
+        $request = $request->withAddedHeader('referer', '/foo/batz');
+        $return = $errorHandler->process($request, $handler);
+
+        $this->assertEquals('/foo/batz', $return->getHeaderLine('location'));
+    }
+
     /**
      * @covers \Engelsystem\Middleware\ErrorHandler::process
      */
@@ -153,7 +223,7 @@ class ErrorHandlerTest extends TestCase
         $request = $this->createMock(ServerRequestInterface::class);
         /** @var TwigLoader|MockObject $twigLoader */
         $twigLoader = $this->createMock(TwigLoader::class);
-        $response = new Response('<!DOCTYPE html><html><body><h1>Hi!</h1></body></html>', 500);
+        $response = new Response('<!DOCTYPE html><html lang="en"><body><h1>Hi!</h1></body></html>', 500);
         $returnResponseHandler = new ReturnResponseMiddlewareHandler($response);
 
         /** @var ErrorHandler|MockObject $errorHandler */

tests/Unit/Middleware/LegacyMiddlewareTest.php

@@ -3,7 +3,7 @@
 namespace Engelsystem\Test\Unit\Middleware;
 
 use Engelsystem\Helpers\Authenticator;
-use Engelsystem\Helpers\Translator;
+use Engelsystem\Helpers\Translation\Translator;
 use Engelsystem\Http\Request;
 use Engelsystem\Middleware\LegacyMiddleware;
 use PHPUnit\Framework\MockObject\MockObject;

tests/Unit/Middleware/SetLocaleTest.php

@@ -2,7 +2,7 @@
 
 namespace Engelsystem\Test\Unit\Middleware;
 
-use Engelsystem\Helpers\Translator;
+use Engelsystem\Helpers\Translation\Translator;
 use Engelsystem\Middleware\SetLocale;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;

tests/Unit/Renderer/EngineTest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Renderer;
+
+use Engelsystem\Test\Unit\Renderer\Stub\EngineImplementation;
+use PHPUnit\Framework\TestCase;
+
+class EngineTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Renderer\Engine::share
+     */
+    public function testShare()
+    {
+        $engine = new EngineImplementation();
+        $engine->share(['foo' => ['bar' => 'baz', 'lorem' => 'ipsum']]);
+        $engine->share(['foo' => ['lorem' => 'dolor']]);
+        $engine->share('key', 'value');
+
+        $this->assertEquals(
+            ['foo' => ['bar' => 'baz', 'lorem' => 'dolor'], 'key' => 'value'],
+            $engine->getSharedData()
+        );
+    }
+}

tests/Unit/Renderer/HtmlEngineTest.php

@@ -16,11 +16,12 @@ class HtmlEngineTest extends TestCase
     public function testGet()
     {
         $engine = new HtmlEngine();
+        $engine->share('shared_data', 'tester');
 
-        $file = $this->createTempFile('<div>%main_content%</div>');
+        $file = $this->createTempFile('<div>%main_content% is a %shared_data%</div>');
 
         $data = $engine->get($file, ['main_content' => 'Lorem ipsum dolor sit']);
-        $this->assertEquals('<div>Lorem ipsum dolor sit</div>', $data);
+        $this->assertEquals('<div>Lorem ipsum dolor sit is a tester</div>', $data);
     }
 
     /**

tests/Unit/Renderer/Stub/EngineImplementation.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Renderer\Stub;
+
+use Engelsystem\Renderer\Engine;
+
+class EngineImplementation extends Engine
+{
+    /**
+     * @inheritdoc
+     */
+    public function get(string $path, array $data = []): string
+    {
+        return '';
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function canRender(string $path): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array
+     */
+    public function getSharedData(): array
+    {
+        return $this->sharedData;
+    }
+}

tests/Unit/Renderer/Twig/Extensions/TranslationTest.php

@@ -2,7 +2,7 @@
 
 namespace Engelsystem\Test\Unit\Renderer\Twig\Extensions;
 
-use Engelsystem\Helpers\Translator;
+use Engelsystem\Helpers\Translation\Translator;
 use Engelsystem\Renderer\Twig\Extensions\Translation;
 use PHPUnit\Framework\MockObject\MockObject;
 use Twig_Extensions_TokenParser_Trans as TranslationTokenParser;

tests/Unit/Renderer/TwigEngineTest.php

@@ -20,16 +20,16 @@ class TwigEngineTest extends TestCase
         $twig = $this->createMock(Twig::class);
 
         $path = 'foo.twig';
-        $data = ['lorem' => 'ipsum'];
-
         $twig->expects($this->once())
             ->method('render')
-            ->with($path, $data)
-            ->willReturn('LoremIpsum!');
+            ->with($path, ['lorem' => 'ipsum', 'shared' => 'data'])
+            ->willReturn('LoremIpsum data!');
 
         $engine = new TwigEngine($twig);
-        $return = $engine->get($path, $data);
-        $this->assertEquals('LoremIpsum!', $return);
+        $engine->share('shared', 'data');
+
+        $return = $engine->get($path, ['lorem' => 'ipsum']);
+        $this->assertEquals('LoremIpsum data!', $return);
     }