Merge pull request 'Changed the version of my-projects-website:0.3.0 to my-projects-website:0.3.1.' (#6) from develop into main

Reviewed-on: #6

.env.example

@@ -1,5 +1,6 @@
 DOCKER_APP_PORT=8080
 DOCKER_CAPTCHA_PORT=8081
+DOCKER_CAPTCHA_WEBSOCKET_PORT=8082
 DOCKER_DB_PORT=3306
 MYSQL_ROOT_PASSWORD=root_pass
 DB_DATABASE=my-projetcs

app/.dockerignore

@@ -0,0 +1,14 @@
+**/.env
+**/*.env
+**/.env.example
+**/storage/app/*
+**/storage/debugbar
+**/storage/framework/cache/*
+**/storage/framework/sessions/*
+**/storage/framework/views/*
+**/storage/framework/testing/*
+**/storage/logs/*
+**/vendor/
+**/node_modules/
+**/public/build/
+**/public/storage

app/application/.env.example

@@ -1,17 +1,21 @@
-APP_NAME=Laravel
+APP_NAME="My Projects Website"
 APP_ENV=local
 APP_KEY=
 APP_DEBUG=true
 APP_TIMEZONE=UTC
 APP_URL=http://localhost
 
+APP_CAPTCHA=false
 CAPTCHA_API_DOMAIN=http://your-domain-captcha-or-IP:8081
 CAPTCHA_PRIVATE_TOKEN=
 CAPTCHA_STATIC_PATH=http://your-domain-captcha-or-IP:8081/captcha
 CAPTCHA_PUBLIC_TOKEN=
 
+# Don't forget to configure MAIL_MAILER to send mail.
+FEEDBACK_MAIL_NOTIFICATIONS=false
+FEEDBACK_MAIL_TO=
+
 APP_FORCE_HTTPS=false
-#UNIT_SOURCE="\"172.16.0.0/12\""
 
 APP_DEFAULT_LOCALE=ru
 APP_FAKER_LOCALE=ru_RU
@@ -59,7 +63,7 @@ REDIS_HOST=app-redis
 REDIS_PASSWORD=null
 REDIS_PORT=6379
 
-MAIL_MAILER=log
+MAIL_MAILER=smtp
 MAIL_HOST=127.0.0.1
 MAIL_PORT=2525
 MAIL_USERNAME=null

app/application/.gitignore

@@ -8,6 +8,7 @@
 .env
 .env.backup
 .env.production
+.env.testing
 .phpunit.result.cache
 Homestead.json
 Homestead.yaml

app/application/app/Console/Commands/Files/DeleteOldFilesFromStorage.php

@@ -0,0 +1,50 @@
+<?php declare(strict_types=1);
+
+namespace App\Console\Commands\Files;
+
+use App\Services\Commands\DeleteOldFilesService;
+use Illuminate\Console\Command;
+use Illuminate\Support\Carbon;
+
+final class DeleteOldFilesFromStorage extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'files:delete-old-files-from-storage';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Remove temporary files or files that have been deleted from the storage table';
+
+    /**
+     * Create a new command instance.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        parent::__construct();
+    }
+
+    /**
+     * Execute the console command.
+     */
+    public function handle(DeleteOldFilesService $deleteOldFilesService): void
+    {
+        $temporaryBeforeDate = Carbon::now()->subDays(3);
+        $deletedBeforeDate   = Carbon::now()->subDays(7);
+
+        $result = $deleteOldFilesService->fromStorage($temporaryBeforeDate, $deletedBeforeDate);
+        if ($result->isError()) {
+            $this->error($result->getMessage());
+            return;
+        }
+        $this->info($result->getMessage());
+    }
+}

app/application/app/Dto/Builder/Documentation.php

@@ -0,0 +1,23 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Builder;
+
+use App\Dto\Builder\DocumentationCategory\Category;
+
+final readonly class Documentation
+{
+    public function __construct(
+        private ?bool     $isPublic = null,
+        private ?Category $categoryId = null,
+    ) { }
+
+    public function isPublic(): ?bool
+    {
+        return $this->isPublic;
+    }
+
+    public function getCategoryId(): ?Category
+    {
+        return $this->categoryId;
+    }
+}

app/application/app/Dto/Builder/DocumentationCategory.php

@@ -0,0 +1,23 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Builder;
+
+use App\Dto\Builder\DocumentationCategory\Category;
+
+final readonly class DocumentationCategory
+{
+    public function __construct(
+        private ?bool     $isPublic = null,
+        private ?Category $parentId = null,
+    ) { }
+
+    public function isPublic(): ?bool
+    {
+        return $this->isPublic;
+    }
+
+    public function getParentId(): ?Category
+    {
+        return $this->parentId;
+    }
+}

app/application/app/Dto/Builder/DocumentationCategory/Category.php

@@ -0,0 +1,20 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Builder\DocumentationCategory;
+
+final readonly class Category
+{
+    public function __construct(
+        private ?int $categoryId,
+    ) { }
+
+    public function getCategoryId(): ?int
+    {
+        return $this->categoryId;
+    }
+
+    public function isCategoryNull(): bool
+    {
+        return $this->getCategoryId() === null;
+    }
+}

app/application/app/Dto/Builder/DocumentationVersion.php

@@ -0,0 +1,15 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Builder;
+
+final readonly class DocumentationVersion
+{
+    public function __construct(
+        private ?bool $isPublic = null,
+    ) { }
+
+    public function isPublic(): ?bool
+    {
+        return $this->isPublic;
+    }
+}

app/application/app/Dto/Service/Admin/Project/About/StoreUpdate.php

@@ -3,12 +3,14 @@
 namespace App\Dto\Service\Admin\Project\About;
 
 use App\Dto\Service\Dto;
+use App\Dto\Service\Storage\Storages;
 
 final readonly class StoreUpdate extends Dto
 {
     public function __construct(
         private string $title,
         private string $description,
+        private Storages $storages,
     ) { }
 
     public function getTitle(): string
@@ -20,4 +22,9 @@ public function getDescription(): string
     {
         return $this->description;
     }
+
+    public function getStorages(): Storages
+    {
+        return $this->storages;
+    }
 }

app/application/app/Dto/Service/Admin/Project/Documentation/Index.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\Documentation;
+
+use App\Dto\Builder\Documentation;
+use App\Dto\Service\Pages;
+
+final readonly class Index extends Pages
+{
+    public function __construct(
+        private Documentation $documentation,
+        int                   $page
+    ) {
+        parent::__construct($page);
+    }
+
+    public function getDocumentation(): Documentation
+    {
+        return $this->documentation;
+    }
+}

app/application/app/Dto/Service/Admin/Project/Documentation/StoreUpdate.php

@@ -0,0 +1,42 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\Documentation;
+
+use App\Dto\Service\Admin\Project\DocumentationContent\Contents;
+use App\Dto\Service\Dto;
+
+final readonly class StoreUpdate extends Dto
+{
+    public function __construct(
+        private string $slug,
+        private bool $isPublic,
+        private int       $sort,
+        private Contents  $contents,
+        private ?int $categoryId,
+    ) { }
+
+    public function getSlug(): string
+    {
+        return $this->slug;
+    }
+
+    public function isPublic(): bool
+    {
+        return $this->isPublic;
+    }
+
+    public function getCategoryId(): ?int
+    {
+        return $this->categoryId;
+    }
+
+    public function getSort(): int
+    {
+        return $this->sort;
+    }
+
+    public function getContents(): Contents
+    {
+        return $this->contents;
+    }
+}

app/application/app/Dto/Service/Admin/Project/DocumentationCategory/Index.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\DocumentationCategory;
+
+use App\Dto\Builder\DocumentationCategory;
+use App\Dto\Service\Pages;
+
+final readonly class Index extends Pages
+{
+    public function __construct(
+        private DocumentationCategory $documentationCategory,
+        int                           $page
+    ) {
+        parent::__construct($page);
+    }
+
+    public function getDocumentationCategory(): DocumentationCategory
+    {
+        return $this->documentationCategory;
+    }
+}

app/application/app/Dto/Service/Admin/Project/DocumentationCategory/StoreUpdate.php

@@ -0,0 +1,42 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\DocumentationCategory;
+
+use App\Dto\Service\Admin\Project\DocumentationCategoryContent\Contents;
+use App\Dto\Service\Dto;
+
+final readonly class StoreUpdate extends Dto
+{
+    public function __construct(
+        private string    $slug,
+        private bool      $isPublic,
+        private int       $sort,
+        private Contents  $contents,
+        private ?int      $parentId,
+    ) { }
+
+    public function getSlug(): string
+    {
+        return $this->slug;
+    }
+
+    public function isPublic(): bool
+    {
+        return $this->isPublic;
+    }
+
+    public function getSort(): int
+    {
+        return $this->sort;
+    }
+
+    public function getParentId(): ?int
+    {
+        return $this->parentId;
+    }
+
+    public function getContents(): Contents
+    {
+        return $this->contents;
+    }
+}

app/application/app/Dto/Service/Admin/Project/DocumentationCategoryContent/Content.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\DocumentationCategoryContent;
+
+final readonly class Content
+{
+    public function __construct(
+        private int    $languageId,
+        private string $title,
+    ) { }
+
+    public function getLanguageId(): int
+    {
+        return $this->languageId;
+    }
+
+    public function getTitle(): string
+    {
+        return $this->title;
+    }
+}

app/application/app/Dto/Service/Admin/Project/DocumentationCategoryContent/Contents.php

@@ -0,0 +1,23 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\DocumentationCategoryContent;
+
+final class Contents
+{
+    private array $contents = [];
+
+    public function addContent(Content $content): void
+    {
+        $this->contents[$content->getLanguageId()] = $content;
+    }
+
+    public function getContent(int $languageId): ?Content
+    {
+        return $this->contents[$languageId] ?? null;
+    }
+
+    public function getContents(): array
+    {
+        return $this->contents;
+    }
+}

app/application/app/Dto/Service/Admin/Project/DocumentationContent/Content.php

@@ -0,0 +1,35 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\DocumentationContent;
+
+use App\Dto\Service\Storage\Storages;
+
+final readonly class Content
+{
+    public function __construct(
+        private int    $languageId,
+        private string $title,
+        private string $content,
+        private Storages $storages,
+    ) { }
+
+    public function getLanguageId(): int
+    {
+        return $this->languageId;
+    }
+
+    public function getTitle(): string
+    {
+        return $this->title;
+    }
+
+    public function getContent(): string
+    {
+        return $this->content;
+    }
+
+    public function getStorages(): Storages
+    {
+        return $this->storages;
+    }
+}

app/application/app/Dto/Service/Admin/Project/DocumentationContent/Contents.php

@@ -0,0 +1,23 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\DocumentationContent;
+
+final class Contents
+{
+    private array $contents = [];
+
+    public function addContent(Content $content): void
+    {
+        $this->contents[$content->getLanguageId()] = $content;
+    }
+
+    public function getContent(int $languageId): ?Content
+    {
+        return $this->contents[$languageId] ?? null;
+    }
+
+    public function getContents(): array
+    {
+        return $this->contents;
+    }
+}

app/application/app/Dto/Service/Admin/Project/DocumentationVersion/Index.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\DocumentationVersion;
+
+use App\Dto\Builder\DocumentationVersion;
+use App\Dto\Service\Pages;
+
+final readonly class Index extends Pages
+{
+    public function __construct(
+        private DocumentationVersion $documentationVersionBuildDto,
+        int                          $page
+    ) {
+        parent::__construct($page);
+    }
+
+    public function getDocumentationVersionBuildDto(): DocumentationVersion
+    {
+        return $this->documentationVersionBuildDto;
+    }
+}

app/application/app/Dto/Service/Admin/Project/DocumentationVersion/StoreUpdate.php

@@ -0,0 +1,36 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Admin\Project\DocumentationVersion;
+
+use App\Dto\Service\Dto;
+use App\Enums\DocumentationVersionStatus;
+
+final readonly class StoreUpdate extends Dto
+{
+    public function __construct(
+        private string $title,
+        private string $slug,
+        private bool $isPublic,
+        private DocumentationVersionStatus $status,
+    ) { }
+
+    public function getTitle(): string
+    {
+        return $this->title;
+    }
+
+    public function getSlug(): string
+    {
+        return $this->slug;
+    }
+
+    public function isPublic(): bool
+    {
+        return $this->isPublic;
+    }
+
+    public function getStatus(): DocumentationVersionStatus
+    {
+        return $this->status;
+    }
+}

app/application/app/Dto/Service/Admin/Project/Translation/Translations.php

@@ -2,6 +2,7 @@
 
 namespace App\Dto\Service\Admin\Project\Translation;
 
+use App\Enums\DocumentationVersionStatus;
 use App\Exceptions\Dto\Admin\Project\Transaction\TranslationsException;
 
 final class Translations
@@ -23,7 +24,7 @@ public function getTranslations(): array
 
     public static function getTranslationCodes(): array
     {
-        return [
+        $translations = [
             'site.Menu',
             'site.Powered by service',
             'site.About project',
@@ -38,6 +39,17 @@ public static function getTranslationCodes(): array
             'site.attributes.message',
             'site.Message sent successfully',
             'Server Error',
+            'site.Documentation',
+            'site.Documentation not created',
+            'site.Choose version',
+            'site.alert-status-not-supported',
+            'site.alert-status-future',
         ];
+
+        foreach (DocumentationVersionStatus::cases() as $status) {
+            $translations[] = $status->getCodeForTranslation();
+        }
+
+        return $translations;
     }
 }

app/application/app/Dto/Service/DocumentationContent/StorageDto.php

@@ -0,0 +1,30 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\DocumentationContent;
+
+use App\Dto\Service\Storage\Storages;
+use App\Models\DocumentationContent;
+
+final class StorageDto
+{
+    /**
+     * @var array [][DocumentationContent documentationContent, Storages storages]
+     */
+    private array $storages = [];
+
+    public function add(DocumentationContent $documentationContent, Storages $storages): void
+    {
+        $this->storages[] = [
+            'documentationContent' => $documentationContent,
+            'storages'             => $storages
+        ];
+    }
+
+    /**
+     * @return array [][DocumentationContent documentationContent, Storages storages]
+     */
+    public function getStorages(): array
+    {
+        return $this->storages;
+    }
+}

app/application/app/Dto/Service/Site/Documentation.php

@@ -0,0 +1,47 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Service\Site;
+
+use App\Models\DocumentationVersion;
+use App\Models\Project;
+use App\Models\User;
+use App\Services\WebsiteTranslations;
+
+final readonly class Documentation
+{
+    public function __construct(
+        private Project $project,
+        private DocumentationVersion $version,
+        private WebsiteTranslations $websiteTranslations,
+        private ?User $user = null,
+    ) { }
+
+    public function getProject(): Project
+    {
+        return $this->project;
+    }
+
+    public function getVersion(): DocumentationVersion
+    {
+        return $this->version;
+    }
+
+    public function getWebsiteTranslations(): WebsiteTranslations
+    {
+        return $this->websiteTranslations;
+    }
+
+    public function getUser(): ?User
+    {
+        return $this->user;
+    }
+
+    public function toArray(): array
+    {
+        return [
+            'project'              => $this->getProject(),
+            'version'              => $this->getVersion(),
+            'websiteTranslations'  => $this->getWebsiteTranslations(),
+        ];
+    }
+}

app/application/app/Dto/View/Volt/Form/WysiwygStorageUpload.php

@@ -0,0 +1,29 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\View\Volt\Form;
+
+use App\Enums\Morph;
+use App\Helpers\Helpers;
+
+final readonly class WysiwygStorageUpload
+{
+    public function __construct(
+        private string      $inputName,
+        private Morph       $morph,
+    ) { }
+
+    public function getInputName(): string
+    {
+        return $this->inputName;
+    }
+
+    public function getRequestInputName(): string
+    {
+        return Helpers::formatAttributeNameToRequestName($this->getInputName());
+    }
+
+    public function getMorph(): Morph
+    {
+        return $this->morph;
+    }
+}

app/application/app/Enums/CacheTag.php

@@ -9,6 +9,7 @@ enum CacheTag: string
 {
     case Project = 'project';
     case ProjectTranslation = 'project_translation';
+    case DocumantationVersion = 'documantation_version';
 
     public function getCache(): TaggedCache
     {

app/application/app/Enums/DocumentationVersionStatus.php

@@ -0,0 +1,46 @@
+<?php declare(strict_types=1);
+
+namespace App\Enums;
+
+use App\Services\WebsiteTranslations;
+use Illuminate\Support\Collection;
+
+enum DocumentationVersionStatus: int
+{
+    case NotSupported   = 0;
+    case Supported      = 50;
+    case CurrentVersion = 100;
+    case FutureVersion  = 150;
+
+    public function getTitle(?WebsiteTranslations $websiteTranslations = null): string
+    {
+        if (\is_null($websiteTranslations)) {
+            return __($this->getCodeForTranslation());
+        }
+
+        return $websiteTranslations->translate($this->getCodeForTranslation());
+    }
+
+    public function getCodeForTranslation(): string
+    {
+        return 'version-status.' . $this->name;
+    }
+
+    public static function toArray(): array
+    {
+        $items = [];
+        foreach (self::cases() as $item) {
+            $items[] = [
+                'name'  => $item->name,
+                'value' => $item->value,
+                'title' => $item->getTitle(),
+            ];
+        }
+        return $items;
+    }
+
+    public static function toCollection(): Collection
+    {
+        return collect(self::toArray());
+    }
+}

app/application/app/Enums/Morph.php

@@ -2,16 +2,22 @@
 
 namespace App\Enums;
 
+use App\Models\DocumentationContent;
 use App\Models\Project;
+use App\Models\ProjectContent;
 
 enum Morph: int
 {
     case Project = 1;
+    case DocumentationContent = 2;
+    case ProjectContent = 3;
 
     public function getPathModel(): string
     {
         return match ($this) {
-            self::Project => Project::class,
+            self::Project              => Project::class,
+            self::DocumentationContent => DocumentationContent::class,
+            self::ProjectContent       => ProjectContent::class,
         };
     }
 

app/application/app/Enums/Permission.php

@@ -12,6 +12,8 @@ enum Permission: string
     case ProjectLink = 'project-link';
     case ProjectTranslation = 'project-translation';
     case ProjectFeedback = 'project-feedback';
+    case Documentation = 'documentation';
+    case DocumentationCategory = 'documentation-category';
 
     public function getPermissions(): array
     {

app/application/app/Enums/Site/ProjectSection.php

@@ -5,15 +5,18 @@
 use App\Models\Project;
 use App\Models\ProjectLanguage;
 
-enum ProjectSection
+enum ProjectSection: string
 {
-    case Home;
-    case Feedback;
-    case FeedbackSend;
+    case Home                  = 'home';
+    case Feedback              = 'feedback';
+    case FeedbackSend          = 'feedback.send';
+    case Documentation         = 'documentation';
+    case DocumentationVersion  = 'documentation.version';
+    case DocumentationCategory = 'documentation.category';
+    case DocumentationView     = 'documentation.view';
 
-    public function url(Project $project, ?ProjectLanguage $language = null): string
+    public function url(Project $project, ?ProjectLanguage $language = null, array $parameters = []): string
     {
-        $parameters = [];
         $prefixProject = '';
         if ($project->http_host === null) {
             $prefixProject = 'project.';
@@ -26,12 +29,7 @@ public function url(Project $project, ?ProjectLanguage $language = null): string
             $prefixLanguage = '-language';
         }
 
-        $route = match ($this) {
-            self::Home => \route($prefixProject . 'home' . $prefixLanguage, $parameters, false),
-
-            self::Feedback => \route($prefixProject . 'feedback' . $prefixLanguage, $parameters, false),
-            self::FeedbackSend => \route($prefixProject . 'feedback.send' . $prefixLanguage, $parameters, false),
-        };
+        $route = \route($prefixProject . $this->value . $prefixLanguage, $parameters, false);
 
         return $project->http_host . $route;
     }

app/application/app/Enums/StorageType.php

@@ -9,39 +9,43 @@
 enum StorageType: int implements Image, Video, Audio
 {
     case Logo = 1;
+    case ContentImages = 2;
 
     public function getTitle(): string
     {
         return match ($this) {
             self::Logo => __('validation.attributes.logo'),
+            self::ContentImages => __('validation.attributes.content_images'),
         };
     }
 
     public function getAcceptMimes(): array
     {
         return match ($this) {
-            self::Logo => ['jpeg', 'jpg', 'png'],
+            self::Logo          => ['jpeg', 'jpg', 'png'],
+            self::ContentImages => ['jpeg', 'jpg', 'png'],
         };
     }
 
     public function isImage(): bool
     {
         return match ($this) {
-            self::Logo => true,
+            self::Logo          => true,
+            self::ContentImages => true,
             default => false
         };
     }
 
     public function isVideo(): bool
     {
-        return match ($this->name) {
+        return match ($this) {
             default => false
         };
     }
 
     public function isAudio(): bool
     {
-        return match ($this->name) {
+        return match ($this) {
             default => false
         };
     }

app/application/app/Exceptions/Services/DocumentationCategory/ParentException.php

@@ -0,0 +1,8 @@
+<?php declare(strict_types=1);
+
+namespace App\Exceptions\Services\DocumentationCategory;
+
+final class ParentException extends \Exception
+{
+
+}

app/application/app/Exceptions/Services/DocumentationCategoryContent/ContentSaveException.php

@@ -0,0 +1,8 @@
+<?php declare(strict_types=1);
+
+namespace App\Exceptions\Services\DocumentationCategoryContent;
+
+final class ContentSaveException extends \Exception
+{
+
+}

app/application/app/Exceptions/Services/DocumentationContent/ContentSaveException.php

@@ -0,0 +1,8 @@
+<?php declare(strict_types=1);
+
+namespace App\Exceptions\Services\DocumentationContent;
+
+final class ContentSaveException extends \Exception
+{
+
+}

app/application/app/Exceptions/Services/DocumentationContent/StorageCommandException.php

@@ -0,0 +1,18 @@
+<?php declare(strict_types=1);
+
+namespace App\Exceptions\Services\DocumentationContent;
+
+use App\ServiceResults\ServiceResultError;
+
+final class StorageCommandException extends \Exception
+{
+    public function __construct(private readonly ServiceResultError $resultError, string $message = "", int $code = 0, ?\Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+    }
+
+    public function getResultError(): ServiceResultError
+    {
+        return $this->resultError;
+    }
+}

app/application/app/Exceptions/Services/Rule/RoleSyncPermissionsCommandHandlerException.php

@@ -0,0 +1,8 @@
+<?php declare(strict_types=1);
+
+namespace App\Exceptions\Services\Rule;
+
+final class RoleSyncPermissionsCommandHandlerException extends \Exception
+{
+
+}

app/application/app/Exceptions/Services/ServiceException.php

@@ -0,0 +1,19 @@
+<?php declare(strict_types=1);
+
+namespace App\Exceptions\Services;
+
+use App\Contracts\ServiceResultError as ServiceResultErrorContract;
+
+final class ServiceException extends \Exception
+{
+    public function __construct(
+        private readonly ServiceResultErrorContract $serviceResultError
+    ) {
+        parent::__construct($this->serviceResultError->getMessage());
+    }
+
+    public function getServiceResultError(): ServiceResultErrorContract
+    {
+        return $this->serviceResultError;
+    }
+}

app/application/app/Http/Controllers/Admin/Projects/DocumentationCategoriesController.php

@@ -0,0 +1,105 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Controllers\Admin\Projects;
+
+use App\Dto\QuerySettingsDto;
+use App\Http\Controllers\Admin\Controller;
+use App\Http\Requests\Admin\Projects\DocumentationCategories\IndexRequest;
+use App\Http\Requests\Admin\Projects\DocumentationCategories\StoreUpdateRequest;
+use App\Services\Admin\Project\DocumentationCategoryService;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+final class DocumentationCategoriesController extends Controller
+{
+    public function __construct(
+        private readonly DocumentationCategoryService $documentationCategoryService,
+    ) { }
+
+    public function index(int $projectId, int $versionId, IndexRequest $request): View
+    {
+        $user = $request->user();
+        $data = $request->getDto();
+        $querySettingsDto = new QuerySettingsDto(
+            limit: 20,
+            page: $data->getPage(),
+            queryWith: []
+        );
+
+        $result = $this->documentationCategoryService->index($projectId, $versionId, $data->getDocumentationCategory(), $querySettingsDto, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentation-categories/index', $result->getData());
+    }
+
+    public function create(int $projectId, int $versionId, Request $request): View
+    {
+        $user = $request->user();
+        $result = $this->documentationCategoryService->create($projectId, $versionId, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentation-categories/create', $result->getData());
+    }
+
+    public function edit(int $projectId, int $versionId, int $id, Request $request): View
+    {
+        $user = $request->user();
+        $result = $this->documentationCategoryService->edit($projectId, $versionId, $id, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentation-categories/edit', $result->getData());
+    }
+
+    public function store(int $projectId, int $versionId, StoreUpdateRequest $request): RedirectResponse
+    {
+        $data = $request->getDto();
+        $user = $request->user();
+        $result = $this->documentationCategoryService->store($projectId, $versionId, $data, $user);
+        if ($result->isError()) {
+            return redirect()->back()->withInput()->withErrors($result->getErrorsOrMessage());
+        }
+
+        return redirect()->route('admin.projects.documentation-versions.categories.edit', [
+            'project' => $projectId,
+            'version' => $versionId,
+            'category' => $result->getModel()->id,
+        ])->withSuccess($result->getMessage());
+    }
+
+    public function update(int $projectId, int $versionId, int $id, StoreUpdateRequest $request): RedirectResponse
+    {
+        $data = $request->getDto();
+        $user = $request->user();
+        $result = $this->documentationCategoryService->update($projectId, $versionId, $id, $data, $user);
+        if ($result->isError()) {
+            return redirect()->back()->withInput()->withErrors($result->getErrorsOrMessage());
+        }
+
+        return redirect()->route('admin.projects.documentation-versions.categories.edit', [
+            'project' => $projectId,
+            'version' => $versionId,
+            'category' => $result->getModel()->id,
+        ])->withSuccess($result->getMessage());
+    }
+
+    public function destroy(int $projectId, int $versionId, int $id, Request $request): RedirectResponse
+    {
+        $user = $request->user();
+        $result = $this->documentationCategoryService->destroy($projectId, $versionId, $id, $user);
+        if ($result->isError()) {
+            return redirect()->back()->withInput()->withErrors($result->getErrorsOrMessage());
+        }
+
+        return redirect()->route('admin.projects.documentation-versions.categories.index', [
+            'project' => $projectId,
+            'version' => $versionId,
+        ])->withSuccess($result->getMessage());
+    }
+}

app/application/app/Http/Controllers/Admin/Projects/DocumentationVersionController.php

@@ -0,0 +1,111 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Controllers\Admin\Projects;
+
+use App\Dto\QuerySettingsDto;
+use App\Http\Controllers\Admin\Controller;
+use App\Http\Requests\Admin\Projects\DocumentVersions\IndexRequest;
+use App\Http\Requests\Admin\Projects\DocumentVersions\StoreUpdateRequest;
+use App\Services\Admin\Project\DocumentationVersionService;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+final class DocumentationVersionController extends Controller
+{
+    public function __construct(
+        private readonly DocumentationVersionService $documentationVersionService,
+    ) { }
+
+    public function index(int $projectId, IndexRequest $request): View
+    {
+        $user = $request->user();
+        $data = $request->getDto();
+        $querySettingsDto = new QuerySettingsDto(
+            limit: 20,
+            page: $data->getPage(),
+            queryWith: []
+        );
+
+        $result = $this->documentationVersionService->index($projectId, $data->getDocumentationVersionBuildDto(), $querySettingsDto, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentation-versions/index', $result->getData());
+    }
+
+    public function show(int $projectId, int $id, Request $request): View
+    {
+        $user = $request->user();
+        $result = $this->documentationVersionService->show($projectId, $id, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentation-versions/show', $result->getData());
+    }
+
+    public function create(int $projectId, Request $request): View
+    {
+        $user = $request->user();
+        $result = $this->documentationVersionService->create($projectId, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentation-versions/create', $result->getData());
+    }
+
+    public function edit(int $projectId, int $id, Request $request): View
+    {
+        $user = $request->user();
+        $result = $this->documentationVersionService->edit($projectId, $id, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentation-versions/edit', $result->getData());
+    }
+
+    public function store(int $projectId, StoreUpdateRequest $request): RedirectResponse
+    {
+        $data = $request->getDto();
+        $user = $request->user();
+        $result = $this->documentationVersionService->store($projectId, $data, $user);
+        if ($result->isError()) {
+            return redirect()->back()->withInput()->withErrors($result->getErrorsOrMessage());
+        }
+
+        return redirect()->route('admin.projects.documentation-versions.edit', [
+            'project' => $projectId,
+            'documentation_version' => $result->getModel()->id,
+        ])->withSuccess($result->getMessage());
+    }
+
+    public function update(int $projectId, int $id, StoreUpdateRequest $request): RedirectResponse
+    {
+        $data = $request->getDto();
+        $user = $request->user();
+        $result = $this->documentationVersionService->update($projectId, $id, $data, $user);
+        if ($result->isError()) {
+            return redirect()->back()->withInput()->withErrors($result->getErrorsOrMessage());
+        }
+
+        return redirect()->route('admin.projects.documentation-versions.edit', [
+            'project' => $projectId,
+            'documentation_version' => $result->getModel()->id,
+        ])->withSuccess($result->getMessage());
+    }
+
+    public function destroy(int $projectId, int $id, Request $request): RedirectResponse
+    {
+        $user = $request->user();
+        $result = $this->documentationVersionService->destroy($projectId, $id, $user);
+        if ($result->isError()) {
+            return redirect()->back()->withInput()->withErrors($result->getErrorsOrMessage());
+        }
+
+        return redirect()->route('admin.projects.documentation-versions.index', ['project' => $projectId])->withSuccess($result->getMessage());
+    }
+}

app/application/app/Http/Controllers/Admin/Projects/DocumentationsController.php

@@ -0,0 +1,105 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Controllers\Admin\Projects;
+
+use App\Dto\QuerySettingsDto;
+use App\Http\Controllers\Admin\Controller;
+use App\Http\Requests\Admin\Projects\Documentations\IndexRequest;
+use App\Http\Requests\Admin\Projects\Documentations\StoreUpdateRequest;
+use App\Services\Admin\Project\DocumentationService;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+final class DocumentationsController extends Controller
+{
+    public function __construct(
+        private readonly DocumentationService $documentationService,
+    ) { }
+
+    public function index(int $projectId, int $versionId, IndexRequest $request): View
+    {
+        $user = $request->user();
+        $data = $request->getDto();
+        $querySettingsDto = new QuerySettingsDto(
+            limit: 20,
+            page: $data->getPage(),
+            queryWith: []
+        );
+
+        $result = $this->documentationService->index($projectId, $versionId, $data->getDocumentation(), $querySettingsDto, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentations/index', $result->getData());
+    }
+
+    public function create(int $projectId, int $versionId, Request $request): View
+    {
+        $user = $request->user();
+        $result = $this->documentationService->create($projectId, $versionId, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentations/create', $result->getData());
+    }
+
+    public function edit(int $projectId, int $versionId, int $id, Request $request): View
+    {
+        $user = $request->user();
+        $result = $this->documentationService->edit($projectId, $versionId, $id, $user);
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('admin/projects/documentations/edit', $result->getData());
+    }
+
+    public function store(int $projectId, int $versionId, StoreUpdateRequest $request): RedirectResponse
+    {
+        $data = $request->getDto();
+        $user = $request->user();
+        $result = $this->documentationService->store($projectId, $versionId, $data, $user);
+        if ($result->isError()) {
+            return redirect()->back()->withInput()->withErrors($result->getErrorsOrMessage());
+        }
+
+        return redirect()->route('admin.projects.documentation-versions.documentations.edit', [
+            'project' => $projectId,
+            'version' => $versionId,
+            'documentation' => $result->getModel()->id,
+        ])->withSuccess($result->getMessage());
+    }
+
+    public function update(int $projectId, int $versionId, int $id, StoreUpdateRequest $request): RedirectResponse
+    {
+        $data = $request->getDto();
+        $user = $request->user();
+        $result = $this->documentationService->update($projectId, $versionId, $id, $data, $user);
+        if ($result->isError()) {
+            return redirect()->back()->withInput()->withErrors($result->getErrorsOrMessage());
+        }
+
+        return redirect()->route('admin.projects.documentation-versions.documentations.edit', [
+            'project' => $projectId,
+            'version' => $versionId,
+            'documentation' => $result->getModel()->id,
+        ])->withSuccess($result->getMessage());
+    }
+
+    public function destroy(int $projectId, int $versionId, int $id, Request $request): RedirectResponse
+    {
+        $user = $request->user();
+        $result = $this->documentationService->destroy($projectId, $versionId, $id, $user);
+        if ($result->isError()) {
+            return redirect()->back()->withInput()->withErrors($result->getErrorsOrMessage());
+        }
+
+        return redirect()->route('admin.projects.documentation-versions.documentations.index', [
+            'project' => $projectId,
+            'version' => $versionId,
+        ])->withSuccess($result->getMessage());
+    }
+}

app/application/app/Http/Controllers/AuthController.php

@@ -19,7 +19,9 @@ public function __construct(
 
     public function login(): View
     {
-        return view('login');
+        return view('login', [
+            'captcha' => config('app.captcha', false),
+        ]);
     }
 
     public function authorization(AuthorizationRequest $request): RedirectResponse

app/application/app/Http/Controllers/Site/DocumentationController.php

@@ -0,0 +1,96 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Controllers\Site;
+
+use App\Dto\Service\Site\Documentation;
+use App\Services\Site\DocumentationService;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Illuminate\View\View;
+
+final class DocumentationController extends Controller
+{
+    public function __construct(
+        private readonly DocumentationService $documentationService,
+    ) { }
+
+    public function defaultVersion(Request $request): RedirectResponse | View
+    {
+        $project = $request->get('project');
+        $websiteTranslations = $request->get('websiteTranslations');
+
+        $result = $this->documentationService->defaultVersion($project, $request->user());
+        if ($result->isError()) {
+            if ($result->getCode() === 404) {
+                return view('site.projects.documentation.no-default-version', [
+                    'project'             => $project,
+                    'websiteTranslations' => $websiteTranslations,
+                ]);
+            }
+            $this->errors($result);
+        }
+
+        $url = \App\Enums\Site\ProjectSection::DocumentationVersion->url($project, $websiteTranslations->getLanguage(), ['version' => $result->getVersion()->slug]);
+        /**
+         * 302 redirect because the documentation version can change at any time.
+         */
+        return redirect($url, 302);
+    }
+
+    public function index(Request $request): View
+    {
+        $documentation = new Documentation(
+            project:              $request->get('project'),
+            version:              $request->get('version'),
+            websiteTranslations:  $request->get('websiteTranslations'),
+            user:                 $request->user(),
+        );
+        $result = $this->documentationService->index($documentation);
+
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+
+        return view('site.projects.documentation.index', $result->getData());
+    }
+
+    public function category(string $slug, Request $request): View
+    {
+        $documentation = new Documentation(
+            project:              $request->get('project'),
+            version:              $request->get('version'),
+            websiteTranslations:  $request->get('websiteTranslations'),
+            user:                 $request->user(),
+        );
+        $result = $this->documentationService->category($slug, $documentation);
+
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+        if ($result->isTranslation()) {
+            return $this->viewPageWithoutTranslation($result);
+        }
+
+        return view('site.projects.documentation.category', $result->getData());
+    }
+
+    public function view(string $slug, Request $request): View
+    {
+        $documentation = new Documentation(
+            project:              $request->get('project'),
+            version:              $request->get('version'),
+            websiteTranslations:  $request->get('websiteTranslations'),
+            user:                 $request->user(),
+        );
+        $result = $this->documentationService->view($slug, $documentation);
+
+        if ($result->isError()) {
+            $this->errors($result);
+        }
+        if ($result->isTranslation()) {
+            return $this->viewPageWithoutTranslation($result);
+        }
+
+        return view('site.projects.documentation.view', $result->getData());
+    }
+}

app/application/app/Http/Controllers/Site/FeedbackController.php

@@ -3,7 +3,6 @@
 namespace App\Http\Controllers\Site;
 
 use App\Http\Requests\Site\Feedback\SendRequest;
-use App\Models\ProjectFeedback;
 use App\Services\Site\FeedbackService;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
@@ -20,6 +19,7 @@ public function index(Request $request): View
         return view('site.feedback.index', [
             'project'             => $request->get('project'),
             'websiteTranslations' => $request->get('websiteTranslations'),
+            'captcha'             => config('app.captcha', false),
         ]);
     }
 

app/application/app/Http/Controllers/Site/ProjectsController.php

@@ -16,7 +16,6 @@ public function index(Request $request): View
     {
         $user    = $request->user();
         $project = $request->get('project');
-        $websiteTranslations = $request->get('websiteTranslations');
 
         if (\is_null($project)) {
             $with = ['storage'];
@@ -28,7 +27,8 @@ public function index(Request $request): View
             return \view('site.projects.index', $result->getData());
         }
 
-        $result = $this->projectService->getAboutByProject($project, $websiteTranslations, $request->user());
+        $websiteTranslations = $request->get('websiteTranslations');
+        $result = $this->projectService->getAboutByProject($project, $websiteTranslations, $user);
         if ($result->isError()) {
             $this->errors($result);
         }

app/application/app/Http/Middleware/DocumentationVersion.php

@@ -0,0 +1,40 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Middleware;
+
+use App\Enums\CacheTag;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+final readonly class DocumentationVersion
+{
+    public function handle(Request $request, \Closure $next): Response
+    {
+        $project = $request->get('project');
+        $versionSlug = $request->route()?->parameter('version');
+        if ($versionSlug === null || $project === null) {
+            \abort(Response::HTTP_NOT_FOUND);
+        }
+
+        $seconds = 3600;
+        $version = CacheTag::DocumantationVersion->getCache()->remember(self::class . $project->id . '-' . $versionSlug, $seconds, function () use ($project, $versionSlug) {
+            return $project->documentationVersions()->where('slug', $versionSlug)->first() ?? false;
+        });
+        if ($version === false) {
+            \abort(Response::HTTP_NOT_FOUND);
+        }
+
+        unset($request->route()->parameters['version']);
+
+        $request->attributes->set('version', $version);
+
+        if (
+            $version->is_public === false
+            && ( $request->user() === null || $request->user()->cannot('view', $version) )
+        ) {
+            \abort(Response::HTTP_FORBIDDEN);
+        }
+
+        return $next($request);
+    }
+}

app/application/app/Http/Middleware/IsProject.php

@@ -0,0 +1,32 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Middleware;
+
+use App\Models\Project;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+final class IsProject
+{
+    public function handle(Request $request, \Closure $next): Response
+    {
+        $project = $request->get('project');
+        if (\is_null($project)) {
+            \abort(Response::HTTP_NOT_FOUND);
+        }
+
+        if ($project instanceof Project === false) {
+            \report("$project must be an instance of Project");
+            \abort(Response::HTTP_NOT_FOUND);
+        }
+
+        if (
+            $project->is_public === false
+            && ( $request->user() === null || $request->user()->cannot('view', $project) )
+        ) {
+            \abort(Response::HTTP_FORBIDDEN);
+        }
+
+        return $next($request);
+    }
+}

app/application/app/Http/Middleware/IsWebsiteTranslations.php

@@ -0,0 +1,25 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Middleware;
+
+use App\Services\WebsiteTranslations;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+final class IsWebsiteTranslations
+{
+    public function handle(Request $request, \Closure $next): Response
+    {
+        $websiteTranslations = $request->get('websiteTranslations');
+        if (\is_null($websiteTranslations)) {
+            \abort(Response::HTTP_NOT_FOUND);
+        }
+
+        if ($websiteTranslations instanceof WebsiteTranslations === false) {
+            \report("$websiteTranslations must be an instance of WebsiteTranslations");
+            \abort(Response::HTTP_NOT_FOUND);
+        }
+
+        return $next($request);
+    }
+}

app/application/app/Http/Middleware/ProjectAndLanguage.php

@@ -7,7 +7,7 @@
 use Symfony\Component\HttpFoundation\Response;
 use Closure;
 
-class ProjectAndLanguage extends ProjectLanguage
+final class ProjectAndLanguage extends ProjectLanguage
 {
     public function handle(Request $request, Closure $next): Response
     {

app/application/app/Http/Requests/Admin/Projects/About/StoreUpdateRequest.php

@@ -4,10 +4,19 @@
 
 use App\Contracts\FormRequestDto;
 use App\Dto\Service\Admin\Project\About\StoreUpdate;
+use App\Dto\Service\Storage\Storages;
+use App\Enums\StorageType;
 use Illuminate\Foundation\Http\FormRequest;
 
 final class StoreUpdateRequest extends FormRequest implements FormRequestDto
 {
+    public function attributes(): array
+    {
+        return [
+            'storage.content_images.*.file' => __('validation.attributes.content_images'),
+        ];
+    }
+
     /**
      * Get the validation rules that apply to the request.
      */
@@ -16,6 +25,7 @@ public function rules(): array
         return [
             'title' => ['required', 'string', 'max:255',],
             'description' => ['nullable', 'string',],
+            'storage.content_images.*.file' => ['numeric', 'min:1'],
         ];
     }
 
@@ -24,6 +34,18 @@ public function getDto(): StoreUpdate
         return new StoreUpdate(
             title: $this->input('title'),
             description: $this->input('description'),
+            storages: $this->storages(),
         );
     }
+
+    private function storages(): Storages
+    {
+        $storages = new Storages();
+
+        $content = $this->input('storage', []);
+        $images = $content['content_images'] ?? [];
+        $storages->addMany($images, StorageType::ContentImages);
+
+        return $storages;
+    }
 }

app/application/app/Http/Requests/Admin/Projects/DocumentVersions/IndexRequest.php

@@ -0,0 +1,29 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Requests\Admin\Projects\DocumentVersions;
+
+use App\Contracts\FormRequestDto;
+use App\Dto\Builder\DocumentationVersion;
+use App\Dto\Service\Admin\Project\DocumentationVersion\Index;
+use Illuminate\Foundation\Http\FormRequest;
+
+final class IndexRequest extends FormRequest implements FormRequestDto
+{
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'page' => ['nullable', 'numeric', 'min:1']
+        ];
+    }
+
+    public function getDto(): Index
+    {
+        return new Index(
+            documentationVersionBuildDto: new DocumentationVersion(),
+            page: (int) $this->input('page', 1)
+        );
+    }
+}

app/application/app/Http/Requests/Admin/Projects/DocumentVersions/StoreUpdateRequest.php

@@ -0,0 +1,35 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Requests\Admin\Projects\DocumentVersions;
+
+use App\Contracts\FormRequestDto;
+use App\Dto\Service\Admin\Project\DocumentationVersion\StoreUpdate;
+use App\Enums\DocumentationVersionStatus;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rules\Enum;
+
+final class StoreUpdateRequest extends FormRequest implements FormRequestDto
+{
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'title' => ['required', 'string', 'max:255'],
+            'slug' => ['required', 'string', 'max:70', 'regex:/^[a-z0-9._-]+$/'],
+            'is_public' => ['required', 'boolean'],
+            'status' => ['required', new Enum(DocumentationVersionStatus::class)],
+        ];
+    }
+
+    public function getDto(): StoreUpdate
+    {
+        return new StoreUpdate(
+            title: $this->input('title'),
+            slug: $this->input('slug'),
+            isPublic: (bool) $this->input('is_public', false),
+            status: DocumentationVersionStatus::from((int) $this->input('status')),
+        );
+    }
+}

app/application/app/Http/Requests/Admin/Projects/DocumentationCategories/IndexRequest.php

@@ -0,0 +1,29 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Requests\Admin\Projects\DocumentationCategories;
+
+use App\Contracts\FormRequestDto;
+use App\Dto\Builder\DocumentationCategory;
+use App\Dto\Service\Admin\Project\DocumentationCategory\Index;
+use Illuminate\Foundation\Http\FormRequest;
+
+final class IndexRequest extends FormRequest implements FormRequestDto
+{
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'page' => ['nullable', 'numeric', 'min:1']
+        ];
+    }
+
+    public function getDto(): Index
+    {
+        return new Index(
+            documentationCategory: new DocumentationCategory(),
+            page: (int) $this->input('page', 1)
+        );
+    }
+}

app/application/app/Http/Requests/Admin/Projects/DocumentationCategories/StoreUpdateRequest.php

@@ -0,0 +1,54 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Requests\Admin\Projects\DocumentationCategories;
+
+use App\Contracts\FormRequestDto;
+use App\Dto\Service\Admin\Project\DocumentationCategory\StoreUpdate;
+use App\Dto\Service\Admin\Project\DocumentationCategoryContent\Content;
+use App\Dto\Service\Admin\Project\DocumentationCategoryContent\Contents;
+use Illuminate\Foundation\Http\FormRequest;
+
+final class StoreUpdateRequest extends FormRequest implements FormRequestDto
+{
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'slug' => ['required', 'string', 'max:200', 'regex:/^[a-z0-9._-]+$/'],
+            'is_public' => ['required', 'boolean'],
+            'sort' => ['required', 'integer', 'min:-1000', 'max:1000'],
+            'parent_id' => ['nullable', 'integer', 'exists:documentation_categories,id'],
+            'content.*.title' => ['required', 'string', 'max:255'],
+        ];
+    }
+
+    public function getDto(): StoreUpdate
+    {
+        $parentId = $this->input('parent_id', null);
+        if (!\is_null($parentId)) {
+            $parentId = (int) $parentId;
+        }
+
+        return new StoreUpdate(
+            slug: $this->input('slug'),
+            isPublic: (bool) $this->input('is_public', false),
+            sort: (int) $this->input('sort'),
+            contents: $this->getContents(),
+            parentId: $parentId,
+        );
+    }
+
+    private function getContents(): Contents
+    {
+        $contents = new Contents();
+        foreach ($this->input('content', []) as $languageId => $content) {
+            $contents->addContent(new Content(
+                languageId: (int) $languageId,
+                title:      $content['title'],
+            ));
+        }
+        return $contents;
+    }
+}

app/application/app/Http/Requests/Admin/Projects/Documentations/IndexRequest.php

@@ -0,0 +1,29 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Requests\Admin\Projects\Documentations;
+
+use App\Contracts\FormRequestDto;
+use App\Dto\Builder\Documentation;
+use App\Dto\Service\Admin\Project\Documentation\Index;
+use Illuminate\Foundation\Http\FormRequest;
+
+final class IndexRequest extends FormRequest implements FormRequestDto
+{
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'page' => ['nullable', 'numeric', 'min:1']
+        ];
+    }
+
+    public function getDto(): Index
+    {
+        return new Index(
+            documentation: new Documentation(),
+            page: (int) $this->input('page', 1)
+        );
+    }
+}

app/application/app/Http/Requests/Admin/Projects/Documentations/StoreUpdateRequest.php

@@ -0,0 +1,77 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Requests\Admin\Projects\Documentations;
+
+use App\Contracts\FormRequestDto;
+use App\Dto\Service\Admin\Project\Documentation\StoreUpdate;
+use App\Dto\Service\Admin\Project\DocumentationContent\Content;
+use App\Dto\Service\Admin\Project\DocumentationContent\Contents;
+use App\Dto\Service\Storage\Storages;
+use App\Enums\StorageType;
+use Illuminate\Foundation\Http\FormRequest;
+
+final class StoreUpdateRequest extends FormRequest implements FormRequestDto
+{
+    public function attributes(): array
+    {
+        return [
+            'content.*.content_images.*.file' => __('validation.attributes.content_images'),
+        ];
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'slug' => ['required', 'string', 'max:200', 'regex:/^[a-z0-9._-]+$/'],
+            'is_public' => ['required', 'boolean'],
+            'sort' => ['required', 'integer', 'min:-1000', 'max:1000'],
+            'category_id' => ['nullable', 'integer', 'exists:documentation_categories,id'],
+            'content.*.title' => ['required', 'string', 'max:255'],
+            'content.*.content' => ['nullable', 'string'],
+            'content.*.content_images.*.file' => ['numeric', 'min:1'],
+        ];
+    }
+
+    public function getDto(): StoreUpdate
+    {
+        $categoryId = $this->input('category_id', null);
+        if (!\is_null($categoryId)) {
+            $categoryId = (int) $categoryId;
+        }
+
+        return new StoreUpdate(
+            slug: $this->input('slug'),
+            isPublic: (bool) $this->input('is_public', false),
+            sort: (int) $this->input('sort'),
+            contents: $this->getContents(),
+            categoryId: $categoryId,
+        );
+    }
+
+    private function getContents(): Contents
+    {
+        $contents = new Contents();
+        foreach ($this->input('content', []) as $languageId => $content) {
+            $contents->addContent(new Content(
+                languageId: (int) $languageId,
+                title:      $content['title'],
+                content:    $content['content'] ?? '',
+                storages:   $this->contentStorages($content),
+            ));
+        }
+        return $contents;
+    }
+
+    private function contentStorages(array $content): Storages
+    {
+        $storages = new Storages();
+
+        $images = $content['content_images'] ?? [];
+        $storages->addMany($images, StorageType::ContentImages);
+
+        return $storages;
+    }
+}

app/application/app/Http/Requests/AuthorizationRequest.php

@@ -13,12 +13,17 @@ final class AuthorizationRequest extends FormRequest implements FormRequestDto
      */
     public function rules(): array
     {
-        return [
+        $rules = [
             'email' => ['required', 'email', 'max:255'],
             'password' => ['required', 'min:3'],
-            'captcha-verified' => ['captcha'],
             'remember' => ['nullable', 'boolean'],
         ];
+
+        if (config('app.captcha', false)) {
+            $rules['captcha-verified'] = ['captcha'];
+        }
+
+        return $rules;
     }
 
     public function getDto(): Authorization

app/application/app/Http/Requests/Site/Feedback/SendRequest.php

@@ -32,12 +32,17 @@ public function attributes(): array
      */
     public function rules(): array
     {
-        return [
+        $rules = [
             'name'    => ['nullable', 'string', 'max:255'],
             'email'   => ['nullable', 'string', 'max:255', 'email'],
             'message' => ['required', 'string', 'max:5000'],
-            'captcha-verified' => ['captcha'],
         ];
+
+        if (config('app.captcha', false)) {
+            $rules['captcha-verified'] = ['captcha'];
+        }
+
+        return $rules;
     }
 
     public function getDto(): Send

app/application/app/Http/Requests/Storage/ImageRequest.php

@@ -6,7 +6,9 @@
 use App\Dto\Service\Storage\Upload;
 use App\Enums\Morph;
 use App\Enums\StorageType;
+use Illuminate\Contracts\Validation\Validator;
 use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Http\Exceptions\HttpResponseException;
 use Illuminate\Validation\Rules\Enum;
 
 final class ImageRequest extends FormRequest implements FormRequestDto
@@ -37,4 +39,20 @@ public function getDto(): Upload
             morph:        Morph::from((int) $this->input('morph')),
         );
     }
+
+    /**
+     * Get the error messages for the defined validation rules.*
+     * @return array
+     */
+    protected function failedValidation(Validator $validator): array
+    {
+        /**
+         * To always return json
+         */
+        throw new HttpResponseException(response()->json([
+            'errors' => $validator->errors(),
+            'status' => true
+        ], 422));
+    }
+
 }

app/application/app/Models/Documentation.php

@@ -0,0 +1,68 @@
+<?php declare(strict_types=1);
+
+namespace App\Models;
+
+use App\Models\Scopes\SortScope;
+use Illuminate\Database\Eloquent\Attributes\ScopedBy;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+#[ScopedBy([SortScope::class])]
+final class Documentation extends Model
+{
+    use HasFactory, SoftDeletes;
+
+    protected $table = 'documentation';
+
+    /**
+     * The model's default values for attributes.
+     *
+     * @var array
+     */
+    protected $attributes = [
+        'sort'      => 100,
+        'is_public' => true,
+    ];
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'slug',
+        'is_public',
+        'category_id',
+    ];
+
+    /**
+     * Get the attributes that should be cast.
+     *
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'is_public' => 'boolean',
+        ];
+    }
+
+    public function category(): BelongsTo
+    {
+        return $this->belongsTo(DocumentationCategory::class, 'category_id', 'id');
+    }
+
+    public function contents(): HasMany
+    {
+        return $this->hasMany(DocumentationContent::class, 'documentation_id', 'id');
+    }
+
+    public function content(): HasOne
+    {
+        return $this->hasOne(DocumentationContent::class, 'documentation_id', 'id');
+    }
+}

app/application/app/Models/DocumentationCategory.php

@@ -0,0 +1,75 @@
+<?php declare(strict_types=1);
+
+namespace App\Models;
+
+use App\Models\Scopes\SortScope;
+use Illuminate\Database\Eloquent\Attributes\ScopedBy;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Staudenmeir\LaravelAdjacencyList\Eloquent\HasRecursiveRelationships;
+
+#[ScopedBy([SortScope::class])]
+final class DocumentationCategory extends Model
+{
+    use HasFactory, SoftDeletes, HasRecursiveRelationships;
+
+    protected $table = 'documentation_categories';
+
+    /**
+     * The model's default values for attributes.
+     *
+     * @var array
+     */
+    protected $attributes = [
+        'sort'      => 100,
+        'is_public' => true,
+    ];
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'slug',
+        'sort',
+        'parent_id',
+        'is_public',
+    ];
+
+    /**
+     * Get the attributes that should be cast.
+     *
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'is_public' => 'boolean',
+        ];
+    }
+
+    public function parent(): BelongsTo
+    {
+        return $this->belongsTo(DocumentationCategory::class, 'parent_id');
+    }
+
+    public function contents(): HasMany
+    {
+        return $this->hasMany(DocumentationCategoryContent::class, 'category_id');
+    }
+
+    public function content(): HasOne
+    {
+        return $this->hasOne(DocumentationCategoryContent::class, 'category_id');
+    }
+
+    public function version(): BelongsTo
+    {
+        return $this->belongsTo(DocumentationVersion::class, 'version_id');
+    }
+}

app/application/app/Models/DocumentationCategoryContent.php

@@ -0,0 +1,24 @@
+<?php declare(strict_types=1);
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+final class DocumentationCategoryContent extends Model
+{
+    use HasFactory, SoftDeletes;
+
+    protected $table = 'documentation_category_content';
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'title',
+        'language_id',
+    ];
+}

app/application/app/Models/DocumentationContent.php

@@ -0,0 +1,27 @@
+<?php declare(strict_types=1);
+
+namespace App\Models;
+
+use App\Contracts\Models\Storage as StorageContract;
+use App\Models\Traits\StorageTrait;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+final class DocumentationContent extends Model implements StorageContract
+{
+    use HasFactory, SoftDeletes, StorageTrait;
+
+    protected $table = 'documentation_content';
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'title',
+        'content',
+        'language_id',
+    ];
+}

app/application/app/Models/DocumentationVersion.php

@@ -0,0 +1,78 @@
+<?php declare(strict_types=1);
+
+namespace App\Models;
+
+use App\Enums\DocumentationVersionStatus;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+final class DocumentationVersion extends Model
+{
+    use HasFactory, SoftDeletes;
+
+    protected $table = 'documentation_versions';
+
+    /**
+     * The model's default values for attributes.
+     *
+     * @var array
+     */
+    protected $attributes = [
+        'is_public' => true,
+        'status'    => DocumentationVersionStatus::CurrentVersion,
+    ];
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = [
+        'title',
+        'slug',
+        'is_public',
+        'status',
+    ];
+
+    /**
+     * The "booted" method of the model.
+     */
+    protected static function booted(): void
+    {
+        static::addGlobalScope('status', function (Builder $builder) {
+            $builder->orderBy('status', 'desc');
+        });
+    }
+
+    /**
+     * Get the attributes that should be cast.
+     *
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        return [
+            'is_public' => 'boolean',
+            'status'    => DocumentationVersionStatus::class,
+        ];
+    }
+
+    public function project(): BelongsTo
+    {
+        return $this->belongsTo(Project::class);
+    }
+
+    public function documentations(): HasMany
+    {
+        return $this->hasMany(Documentation::class, 'version_id');
+    }
+
+    public function categories(): HasMany
+    {
+        return $this->hasMany(DocumentationCategory::class, 'version_id');
+    }
+}

app/application/app/Models/Project.php

@@ -62,4 +62,9 @@ public function feedbacks(): HasMany
     {
         return $this->hasMany(ProjectFeedback::class);
     }
+
+    public function documentationVersions(): HasMany
+    {
+        return $this->hasMany(DocumentationVersion::class);
+    }
 }

app/application/app/Models/ProjectContent.php

@@ -2,13 +2,15 @@
 
 namespace App\Models;
 
+use App\Contracts\Models\Storage as StorageContract;
+use App\Models\Traits\StorageTrait;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\SoftDeletes;
 
-final class ProjectContent extends Model
+final class ProjectContent extends Model implements StorageContract
 {
-    use HasFactory, SoftDeletes;
+    use HasFactory, SoftDeletes, StorageTrait;
 
     protected $table = 'project_content';
 

app/application/app/Notifications/ReviewAdded.php

@@ -0,0 +1,60 @@
+<?php declare(strict_types=1);
+
+namespace App\Notifications;
+
+use App\Enums\Site\ProjectSection;
+use App\Models\ProjectFeedback;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Messages\MailMessage;
+use Illuminate\Notifications\Notification;
+
+final class ReviewAdded extends Notification implements ShouldQueue
+{
+    use Queueable;
+
+    /**
+     * Create a new notification instance.
+     */
+    public function __construct(
+        private readonly ProjectFeedback $feedback
+    ) { }
+
+    /**
+     * Get the notification's delivery channels.
+     *
+     * @return array<int, string>
+     */
+    public function via(object $notifiable): array
+    {
+        return ['mail'];
+    }
+
+    /**
+     * Get the mail representation of the notification.
+     */
+    public function toMail(object $notifiable): MailMessage
+    {
+        $project = $this->feedback->project;
+
+        return (new MailMessage)
+                    ->subject(__('notification.Review Added: :name', ['name' => $project->name]))
+                    ->line(__('notification.Added a new review.'))
+                    ->action(__('notification.Project :name', ['name' => $project->name]), \url(ProjectSection::Home->url($project)))
+                    ->line( __('site.attributes.name') . ': ' . $this->feedback->name)
+                    ->line( __('site.attributes.email') . ': ' . $this->feedback->email)
+                    ->line(__('site.attributes.message') . ': ' . $this->feedback->message);
+    }
+
+    /**
+     * Get the array representation of the notification.
+     *
+     * @return array<string, mixed>
+     */
+    public function toArray(object $notifiable): array
+    {
+        return [
+            //
+        ];
+    }
+}

app/application/app/Policies/DocumentationCategoryPolicy.php

@@ -0,0 +1,34 @@
+<?php declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\DocumentationCategory;
+use App\Models\User;
+
+final readonly class DocumentationCategoryPolicy extends Policy
+{
+    public function viewAny(User $user): bool
+    {
+        return $user->hasPermission('documentation-category.view');
+    }
+
+    public function view(User $user, DocumentationCategory $category): bool
+    {
+        return $user->hasPermission('documentation-category.view');
+    }
+
+    public function create(User $user): bool
+    {
+        return $user->hasPermission('documentation-category.create');
+    }
+
+    public function update(User $user, DocumentationCategory $category): bool
+    {
+        return $user->hasPermission('documentation.update');
+    }
+
+    public function delete(User $user, DocumentationCategory $category): bool
+    {
+        return $user->hasPermission('documentation-category.delete');
+    }
+}

app/application/app/Policies/DocumentationContentPolicy.php

@@ -0,0 +1,17 @@
+<?php declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\User;
+
+final readonly class DocumentationContentPolicy extends Policy
+{
+    public function upload(User $user): bool
+    {
+        if ($user->hasPermission('documentation.create') || $user->hasPermission('documentation.update')) {
+            return true;
+        }
+
+        return false;
+    }
+}

app/application/app/Policies/DocumentationPolicy.php

@@ -0,0 +1,34 @@
+<?php declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\Documentation;
+use App\Models\User;
+
+final readonly class DocumentationPolicy extends Policy
+{
+    public function viewAny(User $user): bool
+    {
+        return $user->hasPermission('documentation.view');
+    }
+
+    public function view(User $user, Documentation $documentation): bool
+    {
+        return $user->hasPermission('documentation.view');
+    }
+
+    public function create(User $user): bool
+    {
+        return $user->hasPermission('documentation.create');
+    }
+
+    public function update(User $user, Documentation $documentation): bool
+    {
+        return $user->hasPermission('documentation.update');
+    }
+
+    public function delete(User $user, Documentation $documentation): bool
+    {
+        return $user->hasPermission('documentation.delete');
+    }
+}

app/application/app/Policies/DocumentationVersionPolicy.php

@@ -0,0 +1,39 @@
+<?php declare(strict_types=1);
+
+namespace App\Policies;
+
+use App\Models\DocumentationVersion;
+use App\Models\User;
+
+final readonly class DocumentationVersionPolicy extends Policy
+{
+    public function viewAny(User $user): bool
+    {
+        // Not a mistake or typo. Shared rights with Documentation.
+        return $user->hasPermission('documentation.view');
+    }
+
+    public function view(User $user, DocumentationVersion $documentationVersion): bool
+    {
+        // Not a mistake or typo. Shared rights with Documentation.
+        return $user->hasPermission('documentation.view');
+    }
+
+    public function create(User $user): bool
+    {
+        // Not a mistake or typo. Shared rights with Documentation.
+        return $user->hasPermission('documentation.create');
+    }
+
+    public function update(User $user, DocumentationVersion $documentationVersion): bool
+    {
+        // Not a mistake or typo. Shared rights with Documentation.
+        return $user->hasPermission('documentation.update');
+    }
+
+    public function delete(User $user, DocumentationVersion $documentationVersion): bool
+    {
+        // Not a mistake or typo. Shared rights with Documentation.
+        return $user->hasPermission('documentation.delete');
+    }
+}

app/application/app/Policies/ProjectContentPolicy.php

@@ -26,4 +26,13 @@ public function update(User $user, ProjectContent $projectContent): bool
     {
         return $user->hasPermission('project-content.update');
     }
+
+    public function upload(User $user): bool
+    {
+        if ($user->hasPermission('project-content.create') || $user->hasPermission('project-content.update')) {
+            return true;
+        }
+
+        return false;
+    }
 }

app/application/app/Providers/AppServiceProvider.php

@@ -3,8 +3,10 @@
 namespace App\Providers;
 
 use App\Enums\Morph;
+use App\Services\ProjectFeedback\ProjectFeedbackCommandHandler;
 use App\Services\Search\CreateSearchInstanceCommand;
 use App\Services\Search\Search;
+use App\Services\Site\FeedbackService;
 use App\Services\Storage\Image\ResizeCommandHandler;
 use App\Services\Storage\ImageService;
 use App\Services\Storage\StorageCommandHandler;
@@ -31,7 +33,15 @@ public function register(): void
         });
 
         $this->app->bind(StorageCommandHandler::class, function () {
-            return new StorageCommandHandler(disc: (string) config('storage.disk'));
+            return new StorageCommandHandler(disc: (string) \config('storage.disk'));
+        });
+
+        $this->app->bind(FeedbackService::class, function (Application $app) {
+            return new FeedbackService(
+                $app->make(ProjectFeedbackCommandHandler::class),
+                (bool) \config('feedback.mail_notifications', false),
+                \config('feedback.mail_to', null),
+            );
         });
 
         $this->app->bind(ImageService::class, function (Application $app) {
@@ -59,6 +69,8 @@ public function boot(): void
 
         Route::pattern('language', '[a-z_]+');
         Route::pattern('project', '[a-z0-9_-]+');
+        Route::pattern('slug', '[a-z0-9._-]+');
+        Route::pattern('version', '[a-z0-9._-]+');
 
         $this->configureRateLimiting();
         Gate::define('AdminPanel', [\App\Policies\AdminPanel::class, 'view']);

app/application/app/Repositories/DocumentationCategoryRepository.php

@@ -0,0 +1,96 @@
+<?php declare(strict_types=1);
+
+namespace App\Repositories;
+
+use App\Contracts\Search;
+use App\Models\DocumentationCategory;
+use App\Models\DocumentationVersion;
+use App\Models\ProjectLanguage;
+use App\Services\DocumentationCategory\BuilderCommand;
+use App\Services\Search\CreateSearchInstanceCommand;
+use App\Dto\Builder\DocumentationCategory as DocumentationCategoryBuilderDto;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Support\Str;
+
+final readonly class DocumentationCategoryRepository
+{
+    public function __construct(
+        private CreateSearchInstanceCommand $createSearchInstanceCommand,
+        private BuilderCommand $builderCommand
+    ) { }
+
+    public function getCategories(int $versionId, DocumentationCategoryBuilderDto $documentationCategoryBuilderDto, array $with = []): Search
+    {
+        $query = $this->builderCommand->execute(
+            query: DocumentationCategory::query()->where('version_id', $versionId)->with($with),
+            documentationCategoryBuilderDto: $documentationCategoryBuilderDto
+        );
+
+        return $this->createSearchInstanceCommand->execute($query);
+    }
+
+    public function getCategoryById(int $id): ?DocumentationCategory
+    {
+        return DocumentationCategory::query()->where('id', $id)->first();
+    }
+
+    public function getCategoryBySlugWithContent(string $slug, int $versionId, ProjectLanguage $language): ?DocumentationCategory
+    {
+        $with = [
+            'content' => function (HasOne $hasOne) use ($language) {
+                $hasOne->where('language_id', $language->id);
+            }
+        ];
+
+        return DocumentationCategory::query()
+            ->where('version_id', $versionId)
+            ->where('slug', $slug)
+            ->with($with)
+            ->first();
+    }
+
+    public function isExistsSlug(int $versionId, string $slug, ?int $exceptId = null): bool
+    {
+        return DocumentationCategory::query()
+            ->where('version_id', $versionId)
+            ->where('slug', Str::lower($slug))
+            ->when($exceptId, function (Builder $query, int $exceptId) {
+                $query->where('id', '!=', $exceptId);
+            })
+            ->withTrashed()
+            ->exists();
+    }
+
+    public function getForSelect(DocumentationVersion $version, ?ProjectLanguage $defaultLanguage, ?DocumentationCategory $exceptCategory = null, array $withExcepts = []): array
+    {
+        $with = [
+            'content' => function (HasOne $hasOne) use ($defaultLanguage) {
+                $hasOne->when($defaultLanguage, function (Builder $query, ProjectLanguage $defaultLanguage) {
+                    $query->where('language_id', $defaultLanguage->id);
+                });
+            }
+        ];
+
+        $categories = $version->categories()
+            ->with($with)
+            ->when($exceptCategory, function (Builder $query, DocumentationCategory $exceptCategory) {
+                $query->whereNotIn(
+                    'id',
+                    $exceptCategory->descendantsAndSelf()->pluck('id')->toArray()
+                );
+            })
+            ->when($withExcepts, function (Builder $query) use ($withExcepts) {
+                $query->withTrashed()->whereNull('deleted_at')->orWhereIn('id', $withExcepts);
+            })->get();
+
+        return $categories->map(function (DocumentationCategory $documentationCategory) use ($defaultLanguage) {
+                return [
+                    'id'    => $documentationCategory->id,
+                    'title' => $documentationCategory->content?->title ?? $documentationCategory->slug,
+                ];
+            })
+            ->pluck('title', 'id')
+            ->toArray();
+    }
+}

app/application/app/Repositories/DocumentationRepository.php

@@ -0,0 +1,63 @@
+<?php declare(strict_types=1);
+
+namespace App\Repositories;
+
+use App\Dto\Builder\Documentation as DocumentationBuilderDto;
+use App\Contracts\Search;
+use App\Models\Documentation;
+use App\Models\ProjectLanguage;
+use App\Services\Documentation\BuilderCommand;
+use App\Services\Search\CreateSearchInstanceCommand;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Support\Str;
+
+final readonly class DocumentationRepository
+{
+    public function __construct(
+        private CreateSearchInstanceCommand $createSearchInstanceCommand,
+        private BuilderCommand $builderCommand
+    ) { }
+
+    public function getDocumentations(int $versionId, DocumentationBuilderDto $documentationBuilderDto, array $with = []): Search
+    {
+        $query = $this->builderCommand->execute(
+            query: Documentation::query()->where('version_id', $versionId)->with($with),
+            documentationBuilderDto: $documentationBuilderDto
+        );
+
+        return $this->createSearchInstanceCommand->execute($query);
+    }
+
+    public function getDocumentationById(int $id): ?Documentation
+    {
+        return Documentation::query()->where('id', $id)->first();
+    }
+
+    public function getDocumentationBySlugWithContent(string $slug, int $versionId, ProjectLanguage $language): ?Documentation
+    {
+        $with = [
+            'content' => function (HasOne $hasOne) use ($language) {
+                $hasOne->where('language_id', $language->id);
+            }
+        ];
+
+        return Documentation::query()
+            ->where('version_id', $versionId)
+            ->where('slug', $slug)
+            ->with($with)
+            ->first();
+    }
+
+    public function isExistsSlug(int $versionId, string $slug, ?int $exceptId = null): bool
+    {
+        return Documentation::query()
+            ->where('version_id', $versionId)
+            ->where('slug', Str::lower($slug))
+            ->when($exceptId, function (Builder $query, int $exceptId) {
+                $query->where('id', '!=', $exceptId);
+            })
+            ->withTrashed()
+            ->exists();
+    }
+}

app/application/app/Repositories/DocumentationVersionRepository.php

@@ -0,0 +1,51 @@
+<?php declare(strict_types=1);
+
+namespace App\Repositories;
+
+use App\Contracts\Search;
+use App\Models\DocumentationVersion;
+use App\Services\DocumentationVersion\BuilderCommand;
+use App\Services\Search\CreateSearchInstanceCommand;
+use App\Dto\Builder\DocumentationVersion as DocumentationVersionBuilderDto;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Str;
+
+final readonly class DocumentationVersionRepository
+{
+    public function __construct(
+        private CreateSearchInstanceCommand $createSearchInstanceCommand,
+        private BuilderCommand $builderCommand
+    ) { }
+
+    public function getVersions(int $projectId, DocumentationVersionBuilderDto $documentationVersionBuilderDto, array $with = []): Search
+    {
+        $query = $this->builderCommand->execute(
+            query: DocumentationVersion::query()->where('project_id', $projectId)->with($with),
+            documentationVersionBuilderDto: $documentationVersionBuilderDto
+        );
+
+        return $this->createSearchInstanceCommand->execute($query);
+    }
+
+    public function getVersionById(int $id): ?DocumentationVersion
+    {
+        return DocumentationVersion::query()->where('id', $id)->first();
+    }
+
+    public function getVersionByCode(string $code): ?DocumentationVersion
+    {
+        return DocumentationVersion::query()->where('code', $code)->first();
+    }
+
+    public function isExistsSlug(int $projectId, string $slug, ?int $exceptId = null): bool
+    {
+        return DocumentationVersion::query()
+            ->where('project_id', $projectId)
+            ->where('slug', Str::lower($slug))
+            ->when($exceptId, function (Builder $query, int $exceptId) {
+                $query->where('id', '!=', $exceptId);
+            })
+            ->withTrashed()
+            ->exists();
+    }
+}

app/application/app/ServiceResults/Site/DocumentationService/DefaultVersion.php

@@ -0,0 +1,17 @@
+<?php declare(strict_types=1);
+
+namespace App\ServiceResults\Site\DocumentationService;
+use App\Models\DocumentationVersion;
+use App\ServiceResults\ServiceResult;
+
+final class DefaultVersion extends ServiceResult
+{
+    public function __construct(
+        private readonly DocumentationVersion $version,
+    ) { }
+
+    public function getVersion(): DocumentationVersion
+    {
+        return $this->version;
+    }
+}

app/application/app/Services/Admin/Project/AboutService.php

@@ -4,6 +4,7 @@
 
 use App\Contracts\ServiceResultError;
 use App\Dto\Service\Admin\Project\About\StoreUpdate;
+use App\Enums\Morph;
 use App\Models\ProjectContent;
 use App\Models\User;
 use App\Repositories\ProjectContentRepository;
@@ -13,6 +14,7 @@
 use App\ServiceResults\StoreUpdateResult;
 use App\Services\ProjectContent\ProjectContentCommandHandler;
 use App\Services\Service;
+use App\Services\Storage\StorageService;
 use Illuminate\Support\Facades\DB;
 
 final class AboutService extends Service
@@ -22,6 +24,7 @@ public function __construct(
         private readonly ProjectLanguageRepository $projectLanguageRepository,
         private readonly ProjectContentRepository $projectContentRepository,
         private readonly ProjectContentCommandHandler $projectContentCommandHandler,
+        private readonly StorageService $storageService,
     ) { }
 
     public function languages(int $projectId, User $user): ServiceResultError | ServiceResultArray
@@ -88,11 +91,19 @@ private function store(int $projectId, int $languageId, StoreUpdate $data, User
         if ($user->cannot('create', ProjectContent::class)) {
             return $this->errFobidden(__('Access is denied'));
         }
+
+        $storages = $this->storageService->getStoragesAndValidate($data->getStorages(), Morph::ProjectContent);
+        if (!$storages->isSuccess()) {
+            return $storages;
+        }
+
         try {
-            $aboutProject = DB::transaction(function () use ($data, $projectId, $languageId) {
+            $aboutProject = DB::transaction(function () use ($data, $projectId, $languageId, $storages) {
                 $dataAboutProject = $this->getDataAboutProject($data);
 
-                return $this->projectContentCommandHandler->handleStore($projectId, $languageId, $dataAboutProject);
+                $aboutProject = $this->projectContentCommandHandler->handleStore($projectId, $languageId, $dataAboutProject);
+                $this->storageService->saveAndDelete($aboutProject, $storages);
+                return $aboutProject;
             });
         } catch (\Throwable $e) {
             report($e);
@@ -108,11 +119,19 @@ private function update(ProjectContent $content, StoreUpdate $data, User $user):
             return $this->errFobidden(__('Access is denied'));
         }
 
+        $storages = $this->storageService->getStoragesAndValidate($data->getStorages(), Morph::ProjectContent);
+        if (!$storages->isSuccess()) {
+            return $storages;
+        }
+
         try {
-            $aboutProject = DB::transaction(function () use ($data, $content) {
+            $aboutProject = DB::transaction(function () use ($data, $content, $storages) {
                 $dataAboutProject = $this->getDataAboutProject($data);
 
-                return $this->projectContentCommandHandler->handleUpdate($content, $dataAboutProject);
+                $aboutProject = $this->projectContentCommandHandler->handleUpdate($content, $dataAboutProject);
+                $this->storageService->saveAndDelete($aboutProject, $storages);
+
+                return $aboutProject;
             });
         } catch (\Throwable $e) {
             report($e);

app/application/app/Services/Admin/Project/DocumentationCategoryService.php

@@ -0,0 +1,257 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\Admin\Project;
+
+use App\Dto\QuerySettingsDto;
+use App\Dto\Builder\DocumentationCategory as DocumentationCategoryBuilderDto;
+use App\Dto\Service\Admin\Project\DocumentationCategory\StoreUpdate;
+use App\Exceptions\Services\DocumentationCategory\ParentException;
+use App\Exceptions\Services\ServiceException;
+use App\Models\DocumentationCategory;
+use App\Models\DocumentationCategoryContent;
+use App\Models\ProjectLanguage;
+use App\Models\User;
+use App\Repositories\DocumentationCategoryRepository;
+use App\Repositories\DocumentationVersionRepository;
+use App\ServiceResults\ServiceResultArray;
+use App\ServiceResults\ServiceResultError;
+use App\ServiceResults\ServiceResultSuccess;
+use App\ServiceResults\StoreUpdateResult;
+use App\Services\DocumentationCategory\DocumentationCategoryCommandHandler;
+use App\Services\DocumentationCategoryContent\ModelSyncCommand;
+use App\Services\Service;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Support\Facades\DB;
+
+final class DocumentationCategoryService extends Service
+{
+    public function __construct(
+        private readonly DocumentationVersionRepository      $documentationVersionRepository,
+        private readonly DocumentationCategoryRepository     $documentationCategoryRepository,
+        private readonly DocumentationCategoryCommandHandler $categoryCommandHandler,
+        private readonly ModelSyncCommand                    $contentSaveCommand,
+    ) { }
+
+    public function index(int $projectId, int $versionId, DocumentationCategoryBuilderDto $documentationCategoryBuilderDto, QuerySettingsDto $querySettingsDto, User $user): ServiceResultError | ServiceResultArray
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('viewAny', DocumentationCategory::class)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $defaultLanguage = $project->languages()->where('is_default', 1)->first();
+        $with = [
+            'content' => function (HasOne $hasOne) use ($defaultLanguage) {
+                /** @var ?ProjectLanguage $defaultLanguage */
+                $hasOne->when($defaultLanguage, function (Builder $query, ProjectLanguage $defaultLanguage) {
+                    $query->where('language_id', $defaultLanguage->id);
+                });
+            }
+        ];
+        $with = array_merge($with, $querySettingsDto->getQueryWith());
+
+        $categories = $this->documentationCategoryRepository->getCategories(
+            $version->id,
+            $documentationCategoryBuilderDto,
+            $with
+        )->pagination(
+            $querySettingsDto->getLimit(),
+            $querySettingsDto->getPage()
+        );
+
+        return $this->result([
+            'version' => $version,
+            'project' => $project,
+            'categories' => $categories,
+        ]);
+    }
+
+    public function create(int $projectId, int $versionId, User $user): ServiceResultError | ServiceResultArray
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('create', DocumentationCategory::class)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $defaultLanguage = $project->languages->where('is_default', 1)->first();
+        return $this->result([
+            'version'  => $version,
+            'project'  => $project,
+            'category' => new DocumentationCategory(),
+            'categories' => $this->documentationCategoryRepository->getForSelect($version, $defaultLanguage),
+        ]);
+    }
+
+    public function edit(int $projectId, int $versionId, int $categoryId, User $user): ServiceResultError | ServiceResultArray
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $category = $this->documentationCategoryRepository->getCategoryById($categoryId);
+        if (\is_null($category)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('view', $category)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $withCategories = [];
+        if ($category->parent_id) {
+            $withCategories[] = $category->parent_id;
+        }
+        $defaultLanguage = $project->languages->where('is_default', 1)->first();
+        return $this->result([
+            'version'  => $version,
+            'project'  => $project,
+            'category' => $category,
+            'categories' => $this->documentationCategoryRepository->getForSelect($version, $defaultLanguage, $category, $withCategories),
+        ]);
+    }
+
+    public function store(int $projectId, int $versionId, StoreUpdate $data, User $user): ServiceResultError | StoreUpdateResult
+    {
+        if ($user->cannot('create', DocumentationCategory::class)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        try {
+            $category = DB::transaction(function () use ($data, $version, $user, $versionId, $project) {
+                if ($this->documentationCategoryRepository->isExistsSlug($versionId, $data->getSlug()) !== false) {
+                    $error = $this->errValidate(
+                        __('validation.unique', ['attribute' => __('validation.attributes.slug')]),
+                        ['slug' => __('validation.unique', ['attribute' => __('validation.attributes.slug')])]
+                    );
+                    throw new ServiceException($error);
+                }
+
+                $dataCategory = $this->getDataCategory($data);
+                $category = $this->categoryCommandHandler->handleStore($version, $dataCategory);
+                $this->contentSaveCommand->execute($project, $category, $data->getContents());
+
+                return $category;
+            });
+        } catch (ServiceException $e) {
+            return $e->getServiceResultError();
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService(__('Server Error'));
+        }
+
+        return $this->resultStoreUpdateModel($category, __('Category successfully created'));
+    }
+
+    public function update(int $projectId, int $versionId, int $categoryId, StoreUpdate $data, User $user): ServiceResultError | StoreUpdateResult
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $category = $this->documentationCategoryRepository->getCategoryById($categoryId);
+        if (\is_null($category)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('view', $category)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        if ($data->getParentId() === $category->id) {
+            return $this->errValidate(
+                __('validation.parent', ['attribute' => __('validation.attributes.parent_id')]),
+                ['parent_id' => __('validation.parent', ['attribute' => __('validation.attributes.parent_id')])]
+            );
+        }
+
+        try {
+            $category = DB::transaction(function () use ($data, $category, $versionId, $project) {
+                if ($this->documentationCategoryRepository->isExistsSlug($versionId, $data->getSlug(), $category->id) !== false) {
+                    $error = $this->errValidate(
+                        __('validation.unique', ['attribute' => __('validation.attributes.slug')]),
+                        ['slug' => __('validation.unique', ['attribute' => __('validation.attributes.slug')])]
+                    );
+                    throw new ServiceException($error);
+                }
+
+                $dataCategory = $this->getDataCategory($data);
+                $category = $this->categoryCommandHandler->handleUpdate($category, $dataCategory);
+                $this->contentSaveCommand->execute($project, $category, $data->getContents());
+
+                return $category;
+            });
+        } catch (ServiceException $e) {
+            return $e->getServiceResultError();
+        } catch (ParentException $e) {
+            return $this->errValidate(
+                __('validation.parent_cycle_detected', ['attribute' => __('validation.attributes.parent_id')]),
+                ['parent_id' => __('validation.parent_cycle_detected', ['attribute' => __('validation.attributes.parent_id')])]
+            );
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService(__('Server Error'));
+        }
+
+        return $this->resultStoreUpdateModel($category, __('Category updated successfully'));
+    }
+
+    public function destroy(int $projectId, int $versionId, int $categoryId, User $user): ServiceResultError|ServiceResultSuccess
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $category = $this->documentationCategoryRepository->getCategoryById($categoryId);
+        if (\is_null($category)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('delete', $category)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        try {
+            DB::transaction(function () use ($category) {
+                $this->categoryCommandHandler->handleDestroy($category);
+            });
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService(__('Server Error'));
+        }
+
+        return $this->ok(__('Category successfully deleted'));
+    }
+
+    private function getDataCategory(StoreUpdate $data): array
+    {
+        return [
+            'slug'      => $data->getSlug(),
+            'is_public' => $data->isPublic(),
+            'sort'      => $data->getSort(),
+            'parent_id' => $data->getParentId(),
+        ];
+    }
+}

app/application/app/Services/Admin/Project/DocumentationService.php

@@ -0,0 +1,243 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\Admin\Project;
+
+use App\Dto\Builder\Documentation as DocumentationBuilderDto;
+use App\Dto\QuerySettingsDto;
+use App\Dto\Service\Admin\Project\Documentation\StoreUpdate;
+use App\Exceptions\Services\DocumentationContent\StorageCommandException;
+use App\Models\Documentation;
+use App\Models\ProjectLanguage;
+use App\Models\User;
+use App\Repositories\DocumentationCategoryRepository;
+use App\Repositories\DocumentationRepository;
+use App\Repositories\DocumentationVersionRepository;
+use App\ServiceResults\ServiceResultArray;
+use App\ServiceResults\ServiceResultError;
+use App\ServiceResults\ServiceResultSuccess;
+use App\ServiceResults\StoreUpdateResult;
+use App\Services\Documentation\DocumentationCommandHandler;
+use App\Services\DocumentationContent\ModelSyncCommand;
+use App\Services\Service;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Support\Facades\DB;
+
+final class DocumentationService extends Service
+{
+    public function __construct(
+        private readonly DocumentationVersionRepository  $documentationVersionRepository,
+        private readonly DocumentationCategoryRepository $documentationCategoryRepository,
+        private readonly DocumentationRepository         $documentationRepository,
+        private readonly DocumentationCommandHandler     $documentationCommandHandler,
+        private readonly ModelSyncCommand                $contentSaveCommand,
+    ) { }
+
+    public function index(int $projectId, int $versionId, DocumentationBuilderDto $documentationBuilderDto, QuerySettingsDto $querySettingsDto, User $user): ServiceResultError | ServiceResultArray
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('viewAny', Documentation::class)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $defaultLanguage = $project->languages()->where('is_default', 1)->first();
+        $with = [
+            'content' => function (HasOne $hasOne) use ($defaultLanguage) {
+                /** @var ?ProjectLanguage $defaultLanguage */
+                $hasOne->when($defaultLanguage, function (Builder $query, ProjectLanguage $defaultLanguage) {
+                    $query->where('language_id', $defaultLanguage->id);
+                });
+            }
+        ];
+        $with = array_merge($with, $querySettingsDto->getQueryWith());
+
+        $documentations = $this->documentationRepository->getDocumentations(
+            $version->id,
+            $documentationBuilderDto,
+            $with
+        )->pagination(
+            $querySettingsDto->getLimit(),
+            $querySettingsDto->getPage()
+        );
+
+        return $this->result([
+            'version' => $version,
+            'project' => $project,
+            'documentations' => $documentations,
+        ]);
+    }
+
+    public function create(int $projectId, int $versionId, User $user): ServiceResultError | ServiceResultArray
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('create', Documentation::class)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $defaultLanguage = $project->languages->where('is_default', 1)->first();
+        return $this->result([
+            'version' => $version,
+            'project' => $project,
+            'documentation' => new Documentation(),
+            'categories' => $this->documentationCategoryRepository->getForSelect($version, $defaultLanguage),
+        ]);
+    }
+
+    public function edit(int $projectId, int $versionId, int $documentationId, User $user): ServiceResultError | ServiceResultArray
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $documentation = $this->documentationRepository->getDocumentationById($documentationId);
+        if (\is_null($documentation)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('view', $documentation)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $withCategories = [];
+        if ($documentation->category_id) {
+            $withCategories[] = $documentation->category_id;
+        }
+        $defaultLanguage = $project->languages->where('is_default', 1)->first();
+        return $this->result([
+            'version' => $version,
+            'project' => $project,
+            'documentation' => $documentation,
+            'categories' => $this->documentationCategoryRepository->getForSelect($version, $defaultLanguage, null, $withCategories),
+        ]);
+    }
+
+    public function store(int $projectId, int $versionId, StoreUpdate $data, User $user): ServiceResultError | StoreUpdateResult
+    {
+        if ($user->cannot('create', Documentation::class)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($this->documentationRepository->isExistsSlug($versionId, $data->getSlug()) !== false) {
+            return $this->errValidate(
+                __('validation.unique', ['attribute' => __('validation.attributes.slug')]),
+                ['slug' => __('validation.unique', ['attribute' => __('validation.attributes.slug')])]
+            );
+        }
+
+        try {
+            $documentation = DB::transaction(function () use ($data, $version, $user, $project) {
+                $dataDocumentation = $this->getDataDocumentation($data);
+                $documentation = $this->documentationCommandHandler->handleStore($version, $dataDocumentation);
+                $this->contentSaveCommand->execute($project, $documentation, $data->getContents());
+
+                return $documentation;
+            });
+        } catch (StorageCommandException $e) {
+            return $e->getResultError();
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService(__('Server Error'));
+        }
+
+        return $this->resultStoreUpdateModel($documentation, __('Documentation created successfully'));
+    }
+
+    public function update(int $projectId, int $versionId, int $documentationId, StoreUpdate $data, User $user): ServiceResultError | StoreUpdateResult
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $documentation = $this->documentationRepository->getDocumentationById($documentationId);
+        if (\is_null($documentation)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('view', $documentation)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        if ($this->documentationRepository->isExistsSlug($versionId, $data->getSlug(), $documentation->id) !== false) {
+            return $this->errValidate(
+                __('validation.unique', ['attribute' => __('validation.attributes.slug')]),
+                ['slug' => __('validation.unique', ['attribute' => __('validation.attributes.slug')])]
+            );
+        }
+
+        try {
+            $documentation = DB::transaction(function () use ($data, $documentation, $project) {
+                $dataDocumentation = $this->getDataDocumentation($data);
+                $documentation = $this->documentationCommandHandler->handleUpdate($documentation, $dataDocumentation);
+                $this->contentSaveCommand->execute($project, $documentation, $data->getContents());
+
+                return $documentation;
+            });
+        } catch (StorageCommandException $e) {
+            return $e->getResultError();
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService(__('Server Error'));
+        }
+
+        return $this->resultStoreUpdateModel($documentation, __('Documentation updated successfully'));
+    }
+
+    public function destroy(int $projectId, int $versionId, int $documentationId, User $user): ServiceResultError|ServiceResultSuccess
+    {
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        $project = $version?->project;
+        if (\is_null($version) || $project?->id !== $projectId) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $documentation = $this->documentationRepository->getDocumentationById($documentationId);
+        if (\is_null($documentation)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('delete', $documentation)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        try {
+            DB::transaction(function () use ($documentation) {
+                $this->documentationCommandHandler->handleDestroy($documentation);
+            });
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService(__('Server Error'));
+        }
+
+        return $this->ok(__('Documentation successfully removed'));
+    }
+
+    private function getDataDocumentation(StoreUpdate $data): array
+    {
+        return [
+            'slug'        => $data->getSlug(),
+            'is_public'   => $data->isPublic(),
+            'sort'        => $data->getSort(),
+            'category_id' => $data->getCategoryId(),
+        ];
+    }
+}

app/application/app/Services/Admin/Project/DocumentationVersionService.php

@@ -0,0 +1,228 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\Admin\Project;
+
+use App\Dto\QuerySettingsDto;
+use App\Dto\Builder\DocumentationVersion as DocumentationVersionBuilderDto;
+use App\Dto\Service\Admin\Project\DocumentationVersion\StoreUpdate;
+use App\Enums\CacheTag;
+use App\Enums\DocumentationVersionStatus;
+use App\Models\DocumentationVersion;
+use App\Models\User;
+use App\Repositories\DocumentationVersionRepository;
+use App\Repositories\ProjectRepository;
+use App\ServiceResults\ServiceResultArray;
+use App\ServiceResults\ServiceResultError;
+use App\ServiceResults\ServiceResultSuccess;
+use App\ServiceResults\StoreUpdateResult;
+use App\Services\ClearCacheCommandHandler;
+use App\Services\DocumentationVersion\DocumentationVersionCommandHandler;
+use App\Services\Service;
+use Illuminate\Support\Facades\DB;
+
+final class DocumentationVersionService extends Service
+{
+    public function __construct(
+        private readonly ProjectRepository $projectRepository,
+        private readonly DocumentationVersionRepository $documentationVersionRepository,
+        private readonly DocumentationVersionCommandHandler $documentationVersionCommandHandler,
+        private readonly ClearCacheCommandHandler $clearCacheCommandHandler,
+    ) { }
+
+    public function index(int $projectId, DocumentationVersionBuilderDto $documentationVersionBuilderDto, QuerySettingsDto $querySettingsDto, User $user): ServiceResultError | ServiceResultArray
+    {
+        $project = $this->projectRepository->getProjectById($projectId);
+        if (\is_null($project)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('viewAny', DocumentationVersion::class)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $versions = $this->documentationVersionRepository->getVersions(
+            $project->id,
+            $documentationVersionBuilderDto,
+            $querySettingsDto->getQueryWith()
+        )->pagination(
+            $querySettingsDto->getLimit(),
+            $querySettingsDto->getPage()
+        );
+
+        return $this->result([
+            'versions' => $versions,
+            'project'  => $project,
+        ]);
+    }
+
+    public function show(int $projectId, int $versionId, User $user): ServiceResultError | ServiceResultArray
+    {
+        $project = $this->projectRepository->getProjectById($projectId);
+        if (\is_null($project)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        if (\is_null($version)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('view', $version)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        return $this->result([
+            'version'  => $version,
+            'project'  => $project,
+        ]);
+    }
+
+    public function create(int $projectId, User $user): ServiceResultError | ServiceResultArray
+    {
+        $project = $this->projectRepository->getProjectById($projectId);
+        if (\is_null($project)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('create', DocumentationVersion::class)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        return $this->result([
+            'version'  => new DocumentationVersion(),
+            'statuses' => DocumentationVersionStatus::toCollection()->pluck( 'title', 'value')->toArray(),
+            'project'  => $project,
+        ]);
+    }
+
+    public function edit(int $projectId, int $versionId, User $user): ServiceResultError | ServiceResultArray
+    {
+        $project = $this->projectRepository->getProjectById($projectId);
+        if (\is_null($project)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        if (\is_null($version)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('view', $version)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        return $this->result([
+            'version'  => $version,
+            'statuses' => DocumentationVersionStatus::toCollection()->pluck( 'title', 'value')->toArray(),
+            'project'  => $project,
+        ]);
+    }
+
+    public function store(int $projectId, StoreUpdate $data, User $user): ServiceResultError | StoreUpdateResult
+    {
+        if ($user->cannot('create', DocumentationVersion::class)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $project = $this->projectRepository->getProjectById($projectId);
+        if (\is_null($project)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($this->documentationVersionRepository->isExistsSlug($projectId, $data->getSlug()) !== false) {
+            return $this->errValidate(
+                __('validation.unique', ['attribute' => __('validation.attributes.slug')]),
+                ['slug' => __('validation.unique', ['attribute' => __('validation.attributes.slug')])]
+            );
+        }
+
+        try {
+            $version = DB::transaction(function () use ($data, $project, $user) {
+                $dataVersion = $this->getDataVersion($data);
+                return $this->documentationVersionCommandHandler->handleStore($project, $dataVersion);
+            });
+            $this->clearCacheCommandHandler->byTag(CacheTag::DocumantationVersion);
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService(__('Server Error'));
+        }
+
+        return $this->resultStoreUpdateModel($version, __('Documentation version created successfully'));
+    }
+
+    public function update(int $projectId, int $versionId, StoreUpdate $data, User $user): ServiceResultError | StoreUpdateResult
+    {
+        $project = $this->projectRepository->getProjectById($projectId);
+        if (\is_null($project)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        if (\is_null($version)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('update', $version)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        if ($this->documentationVersionRepository->isExistsSlug($projectId, $data->getSlug(), $version->id) !== false) {
+            return $this->errValidate(
+                __('validation.unique', ['attribute' => __('validation.attributes.slug')]),
+                ['slug' => __('validation.unique', ['attribute' => __('validation.attributes.slug')])]
+            );
+        }
+
+        try {
+            $version = DB::transaction(function () use ($data, $version) {
+                $dataVersion = $this->getDataVersion($data);
+                return $this->documentationVersionCommandHandler->handleUpdate($version, $dataVersion);
+            });
+            $this->clearCacheCommandHandler->byTag(CacheTag::DocumantationVersion);
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService(__('Server Error'));
+        }
+
+        return $this->resultStoreUpdateModel($version, __('Documentation version updated successfully'));
+    }
+
+    public function destroy(int $projectId, int $versionId, User $user): ServiceResultError|ServiceResultSuccess
+    {
+        $project = $this->projectRepository->getProjectById($projectId);
+        if (\is_null($project)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        $version = $this->documentationVersionRepository->getVersionById($versionId);
+        if (\is_null($version)) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        if ($user->cannot('delete', $version)) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        try {
+            DB::transaction(function () use ($version) {
+                $this->documentationVersionCommandHandler->handleDestroy($version);
+            });
+            $this->clearCacheCommandHandler->byTag(CacheTag::DocumantationVersion);
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService(__('Server Error'));
+        }
+
+        return $this->ok(__('Documentation version successfully removed'));
+    }
+
+    private function getDataVersion(StoreUpdate $data): array
+    {
+        return [
+            'title'     => $data->getTitle(),
+            'slug'      => $data->getSlug(),
+            'is_public' => $data->isPublic(),
+            'status'    => $data->getStatus(),
+        ];
+    }
+}

app/application/app/Services/Commands/DeleteOldFilesService.php

@@ -0,0 +1,46 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\Commands;
+
+use App\Models\Storage as StorageModel;
+use App\ServiceResults\ServiceResultError;
+use App\ServiceResults\ServiceResultSuccess;
+use App\Services\Service;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Facades\Storage as StorageSupport;
+
+final class DeleteOldFilesService extends Service
+{
+    /**
+     * $temporaryBeforeDate = date of deletion of temporary files
+     * $deletedBeforeDate = date of deletion files that were marked as deleted
+     *
+     * @param Carbon $temporaryBeforeDate
+     * @param Carbon $deletedBeforeDate
+     * @return ServiceResultError|ServiceResultSuccess
+     */
+    public function fromStorage(Carbon $temporaryBeforeDate, Carbon $deletedBeforeDate): ServiceResultError|ServiceResultSuccess
+    {
+        $disk = config('storage.disk');
+
+        StorageModel::withTrashed()
+            ->where(function (Builder $query) use($temporaryBeforeDate) {
+                $query->whereNull('morph_id')->where('updated_at', '<', $temporaryBeforeDate);
+            })->orWhere(function (Builder $query) use($deletedBeforeDate) {
+                $query->whereNotNull('deleted_at')->where('deleted_at', '<', $deletedBeforeDate);
+            })->chunkById(100, function ($items) use($disk) {
+                $deleteIds = [];
+                foreach ($items as $item) {
+                    $deleteIds[] = $item->id;
+
+                    if (StorageSupport::disk($disk)->exists($item->file)) {
+                        StorageSupport::disk($disk)->delete($item->file);
+                    }
+                }
+                StorageModel::withTrashed()->whereIn('id', $deleteIds)->forceDelete();
+            });
+
+        return $this->ok(__('Old Files deleted.'));
+    }
+}

app/application/app/Services/Documentation/BuilderCommand.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\Documentation;
+
+use App\Dto\Builder\Documentation as DocumentationBuilderDto;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\Relation;
+
+final readonly class BuilderCommand
+{
+    public function execute(Relation | Builder $query, DocumentationBuilderDto $documentationBuilderDto): Relation | Builder
+    {
+        return $query
+            ->when($documentationBuilderDto->isPublic(), function (Builder $query) use ($documentationBuilderDto) {
+                $query->where('is_public', $documentationBuilderDto->isPublic());
+            })
+            ->when($documentationBuilderDto->getCategoryId(), function (Builder $query) use ($documentationBuilderDto) {
+                $query->where('category_id', $documentationBuilderDto->getCategoryId()->getCategoryId());
+            });
+    }
+}

app/application/app/Services/Documentation/DocumentationCommandHandler.php

@@ -0,0 +1,36 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\Documentation;
+
+use App\Models\Documentation;
+use App\Models\DocumentationVersion;
+use Illuminate\Support\Str;
+
+final readonly class DocumentationCommandHandler
+{
+    public function handleStore(DocumentationVersion $version, array $data): Documentation
+    {
+        $data['slug'] = Str::lower($data['slug']);
+        return $version->documentations()->create($data);
+    }
+
+    public function handleUpdate(Documentation $documentation, array $data): Documentation
+    {
+        if (isset($data['slug'])) {
+            $data['slug'] = Str::lower($data['slug']);
+        }
+
+        $documentation->update($data);
+        $documentation->touch();
+
+        return $documentation;
+    }
+
+    public function handleDestroy(Documentation $documentation): void
+    {
+        $documentation->update([
+            'slug' => $documentation->slug . '#delete:' . $documentation->id,
+        ]);
+        $documentation->delete();
+    }
+}

app/application/app/Services/DocumentationCategory/BuilderCommand.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\DocumentationCategory;
+
+use App\Dto\Builder\DocumentationCategory as DocumentationCategoryBuilderDto;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\Relation;
+
+final readonly class BuilderCommand
+{
+    public function execute(Relation | Builder $query, DocumentationCategoryBuilderDto $documentationCategoryBuilderDto): Relation | Builder
+    {
+        return $query
+            ->when($documentationCategoryBuilderDto->isPublic(), function (Builder $query) use ($documentationCategoryBuilderDto) {
+                $query->where('is_public', $documentationCategoryBuilderDto->isPublic());
+            })
+            ->when($documentationCategoryBuilderDto->getParentId(), function (Builder $query) use ($documentationCategoryBuilderDto) {
+                $query->where('parent_id', $documentationCategoryBuilderDto->getParentId()->getCategoryId());
+            });
+    }
+}

app/application/app/Services/DocumentationCategory/DocumentationCategoryCommandHandler.php

@@ -0,0 +1,44 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\DocumentationCategory;
+
+use App\Exceptions\Services\DocumentationCategory\ParentException;
+use App\Models\DocumentationCategory;
+use App\Models\DocumentationVersion;
+use Illuminate\Support\Str;
+
+final readonly class DocumentationCategoryCommandHandler
+{
+    public function handleStore(DocumentationVersion $version, array $data): DocumentationCategory
+    {
+        $data['slug'] = Str::lower($data['slug']);
+        return $version->categories()->create($data);
+    }
+
+    public function handleUpdate(DocumentationCategory $category, array $data): DocumentationCategory
+    {
+        if (!empty($data['parent_id'])) {
+            $category->parent_id = $data['parent_id'];
+            if ($category->ancestors()->withTrashed()->where('id', $category->id)->exists()) {
+                throw new ParentException('Category ID occurs in the parent chain (category: ' . $category->id . ', parent_id: ' . $category->parent_id . ').');
+            }
+        }
+
+        if (isset($data['slug'])) {
+            $data['slug'] = Str::lower($data['slug']);
+        }
+
+        $category->update($data);
+        $category->touch();
+
+        return $category;
+    }
+
+    public function handleDestroy(DocumentationCategory $category): void
+    {
+        $category->update([
+            'slug' => $category->slug . '#delete:' . $category->id,
+        ]);
+        $category->delete();
+    }
+}

app/application/app/Services/DocumentationCategoryContent/ModelSyncCommand.php

@@ -0,0 +1,46 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\DocumentationCategoryContent;
+
+use App\Dto\Service\Admin\Project\DocumentationCategoryContent\Content;
+use App\Dto\Service\Admin\Project\DocumentationCategoryContent\Contents;
+use App\Exceptions\Services\DocumentationCategoryContent\ContentSaveException;
+use App\Models\DocumentationCategory;
+use App\Models\Project;
+
+final readonly class ModelSyncCommand
+{
+    public function execute(Project $project, DocumentationCategory $category, Contents $contents): void
+    {
+        $languages = $project->languages;
+        $categoryContents = $category->contents;
+
+        $newContents = [];
+        foreach ($contents->getContents() as $content)   {
+            /** @var Content $content */
+            $language = $languages->firstWhere('id', $content->getLanguageId());
+            if (!$language) {
+                throw new ContentSaveException('Language not found: ' . $content->getLanguageId());
+            }
+
+            $model = $categoryContents->firstWhere('language_id', $language->id);
+            $data  = $this->getData($content);
+            if (\is_null($model)) {
+                $newContents[] = array_merge(['language_id' => $content->getLanguageId()], $data);
+                continue;
+            }
+            $model->update($data);
+        }
+
+        if (!empty($newContents)) {
+            $category->contents()->createMany($newContents);
+        }
+    }
+
+    private function getData(Content $content): array
+    {
+        return [
+            'title' => $content->getTitle(),
+        ];
+    }
+}

app/application/app/Services/DocumentationContent/ModelSyncCommand.php

@@ -0,0 +1,76 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\DocumentationContent;
+
+use App\Dto\Service\Admin\Project\DocumentationContent\Content;
+use App\Dto\Service\Admin\Project\DocumentationContent\Contents;
+use App\Dto\Service\DocumentationContent\StorageDto;
+use App\Exceptions\Services\DocumentationContent\ContentSaveException;
+use App\Exceptions\Services\DocumentationContent\StorageCommandException;
+use App\Models\Documentation;
+use App\Models\DocumentationContent;
+use App\Models\Project;
+
+final readonly class ModelSyncCommand
+{
+    public function __construct(
+        private StorageCommand $storageCommand,
+    ) { }
+
+    /**
+     * @throws StorageCommandException
+     * @throws ContentSaveException
+     */
+    public function execute(Project $project, Documentation $documentation, Contents $contents): void
+    {
+        $storageDto = new StorageDto();
+
+        $languages = $project->languages;
+        $documentationContents = $documentation->contents;
+
+        $newContents = [];
+        $contentsStorageCreated = [];
+        $contentLanguages = [];
+        foreach ($contents->getContents() as $content)   {
+            /** @var Content $content */
+            $language = $languages->firstWhere('id', $content->getLanguageId());
+            if (!$language) {
+                throw new ContentSaveException('Language not found: ' . $content->getLanguageId());
+            }
+
+            $model = $documentationContents->firstWhere('language_id', $language->id);
+            $data  = $this->getData($content);
+            if (\is_null($model)) {
+                $contentsStorageCreated[$content->getLanguageId()] = $content->getStorages();
+                $newContents[] = array_merge(['language_id' => $content->getLanguageId()], $data);
+                $contentLanguages[] = $content->getLanguageId();
+                continue;
+            }
+            $storageDto->add($model, $content->getStorages());
+            $model->update($data);
+        }
+
+        if (!empty($newContents)) {
+            $documentation->contents()->createMany($newContents);
+            $contents = $documentation->contents()->whereIn('language_id', $contentLanguages)->get();
+            foreach ($contents as $content) {
+                /** @var DocumentationContent $content */
+                if (!isset($contentsStorageCreated[$content->language_id])) {
+                    continue;
+                }
+
+                $storageDto->add($content, $contentsStorageCreated[$content->language_id]);
+            }
+        }
+
+        $this->storageCommand->execute($storageDto);
+    }
+
+    private function getData(Content $content): array
+    {
+        return [
+            'title'   => $content->getTitle(),
+            'content' => $content->getContent(),
+        ];
+    }
+}

app/application/app/Services/DocumentationContent/StorageCommand.php

@@ -0,0 +1,31 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\DocumentationContent;
+
+use App\Dto\Service\DocumentationContent\StorageDto;
+use App\Enums\Morph;
+use App\Exceptions\Services\DocumentationContent\StorageCommandException;
+use App\Services\Storage\StorageService;
+
+final readonly class StorageCommand
+{
+    public function __construct(
+        private StorageService $storageService,
+    ) { }
+
+
+    /**
+     * @throws StorageCommandException
+     */
+    public function execute(StorageDto $storageDto): void
+    {
+        foreach ($storageDto->getStorages() as $storage) {
+            $storages = $this->storageService->getStoragesAndValidate($storage['storages'], Morph::DocumentationContent, $storage['documentationContent']->id);
+            if (!$storages->isSuccess()) {
+                throw new StorageCommandException($storages, 'Error when adding a file to storage: ' . $storages->getMessage());
+            }
+
+            $this->storageService->saveAndDelete($storage['documentationContent'], $storages);
+        }
+    }
+}

app/application/app/Services/DocumentationVersion/BuilderCommand.php

@@ -0,0 +1,19 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\DocumentationVersion;
+
+use App\Dto\Builder\DocumentationVersion as DocumentationVersionBuilderDto;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\Relation;
+
+final readonly class BuilderCommand
+{
+    public function execute(Relation | Builder $query, DocumentationVersionBuilderDto $documentationVersionBuilderDto): Relation | Builder
+    {
+        if ($documentationVersionBuilderDto->isPublic() !== null) {
+            $query->where('is_public', $documentationVersionBuilderDto->isPublic());
+        }
+
+        return $query;
+    }
+}

app/application/app/Services/DocumentationVersion/DocumentationVersionCommandHandler.php

@@ -0,0 +1,37 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\DocumentationVersion;
+
+use App\Models\DocumentationVersion;
+use App\Models\Project;
+use Illuminate\Support\Str;
+
+final readonly class DocumentationVersionCommandHandler
+{
+    public function handleStore(Project $project, array $data): DocumentationVersion
+    {
+        $data['slug'] = Str::lower($data['slug']);
+
+        return $project->documentationVersions()->create($data);
+    }
+
+    public function handleUpdate(DocumentationVersion $version, array $data): DocumentationVersion
+    {
+        if (isset($data['slug'])) {
+            $data['slug'] = Str::lower($data['slug']);
+        }
+
+        $version->update($data);
+        $version->touch();
+
+        return $version;
+    }
+
+    public function handleDestroy(DocumentationVersion $version): void
+    {
+        $version->update([
+            'slug' => $version->slug . '#delete:' . $version->id,
+        ]);
+        $version->delete();
+    }
+}

app/application/app/Services/Role/RoleSyncPermissionsCommandHandler.php

@@ -3,7 +3,7 @@
 namespace App\Services\Role;
 
 use App\Enums\Permission;
-use App\Exceptions\Rule\RoleSyncPermissionsCommandHandlerException;
+use App\Exceptions\Services\Rule\RoleSyncPermissionsCommandHandlerException;
 use App\Models\Role;
 use App\Models\RolePermission;
 

app/application/app/Services/Site/DocumentationService.php

@@ -0,0 +1,151 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\Site;
+
+use App\Dto\Service\Site\Documentation;
+use App\Enums\CacheTag;
+use App\Enums\DocumentationVersionStatus;
+use App\Models\DocumentationCategory;
+use App\Models\Documentation as ModelDocumentation;
+use App\Models\DocumentationVersion;
+use App\Models\Project;
+use App\Models\User;
+use App\Repositories\DocumentationCategoryRepository;
+use App\Repositories\DocumentationRepository;
+use App\ServiceResults\ServiceResultArray;
+use App\ServiceResults\ServiceResultError;
+use App\ServiceResults\Site\DocumentationService\DefaultVersion;
+use app\ServiceResults\Site\PagePossibleWithoutTranslation;
+use App\Services\Service;
+use App\Dto\Builder\DocumentationCategory as DocumentationCategoryBuilderDto;
+use App\Dto\Builder\Documentation as DocumentationBuilderDto;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Support\Collection;
+
+final class DocumentationService extends Service
+{
+    public function __construct(
+        private readonly DocumentationCategoryRepository $documentationCategoryRepository,
+        private readonly DocumentationRepository         $documentationRepository
+    ) { }
+
+    public function defaultVersion(Project $project, ?User $user): ServiceResultError | DefaultVersion
+    {
+        $seconds = 3600;
+        $isPublic = null;
+        if ($user?->cannot('viewAny', DocumentationVersion::class)) {
+            $isPublic = 1;
+        }
+        $version = CacheTag::DocumantationVersion->getCache()
+            ->remember(self::class . $project->id . '_' . $isPublic ?? 0, $seconds, function () use ($project, $isPublic) {
+                $versions = $project->documentationVersions()
+                    ->when($isPublic, function (Builder $query) {
+                        $query->where('is_public', 1);
+                    })
+                    ->limit(10)
+                    ->get();
+                return $versions->firstWhere('status', DocumentationVersionStatus::CurrentVersion)
+                    ??
+                    $versions->first() ?? false;
+            });
+
+        if ($version === false) {
+            return $this->errNotFound(__('Not Found'));
+        }
+
+        return new DefaultVersion($version);
+    }
+
+    public function index(Documentation $documentation): ServiceResultError | ServiceResultArray
+    {
+        return $this->result(array_merge($documentation->toArray(), [
+            'categories'     => $this->getCategories($documentation, null),
+            'documentations' => $this->getDocumentations($documentation, null),
+        ]));
+    }
+
+    public function category(string $slug, Documentation $documentation): ServiceResultError | PagePossibleWithoutTranslation
+    {
+        $category = $this->documentationCategoryRepository->getCategoryBySlugWithContent($slug, $documentation->getVersion()->id, $documentation->getWebsiteTranslations()->getLanguage());
+        if (!$category) {
+            return $this->errNotFound(__('Not Found'));
+        }
+        if (
+            $category->is_public === false &&
+            ($documentation->getUser() === null || $documentation->getUser()->cannot('view', $category))
+        ) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $data = array_merge($documentation->toArray(), [
+            'category'       => $category,
+            'categories'     => $this->getCategories($documentation, $category->id),
+            'documentations' => $this->getDocumentations($documentation, $category->id),
+        ]);
+        return $this->resultSitePage($documentation->getProject(), $documentation->getWebsiteTranslations(), $data, \is_null($category->content?->title));
+    }
+
+    public function view(string $slug, Documentation $documentation): ServiceResultError | PagePossibleWithoutTranslation
+    {
+        $document = $this->documentationRepository->getDocumentationBySlugWithContent($slug, $documentation->getVersion()->id, $documentation->getWebsiteTranslations()->getLanguage());
+        if (!$document) {
+            return $this->errNotFound(__('Not Found'));
+        }
+        if (
+            $document->is_public === false &&
+            ($documentation->getUser() === null || $documentation->getUser()->cannot('view', $document))
+        ) {
+            return $this->errFobidden(__('Access is denied'));
+        }
+
+        $data = array_merge($documentation->toArray(), [
+            'documentation' => $document,
+        ]);
+        return $this->resultSitePage($documentation->getProject(), $documentation->getWebsiteTranslations(), $data, \is_null($document->content?->title));
+    }
+
+    private function getCategories(Documentation $documentation, ?int $parentId): Collection
+    {
+        $isPublic = null;
+        if ($documentation->getUser() === null || $documentation->getUser()->cannot('viewAny', DocumentationCategory::class)) {
+            $isPublic = true;
+        }
+        $builderDto = new DocumentationCategoryBuilderDto(
+            isPublic: $isPublic,
+            parentId: new DocumentationCategoryBuilderDto\Category($parentId),
+        );
+        $with = [
+            'content' => function (HasOne $hasOne) use ($documentation) {
+                $hasOne->where('language_id', $documentation->getWebsiteTranslations()->getLanguage()->id);
+            }
+        ];
+        return $this->documentationCategoryRepository->getCategories(
+            $documentation->getVersion()->id,
+            $builderDto,
+            $with
+        )->all();
+    }
+
+    private function getDocumentations(Documentation $documentation, ?int $categoryId): Collection
+    {
+        $isPublic = null;
+        if ($documentation->getUser() === null || $documentation->getUser()->cannot('viewAny', ModelDocumentation::class)) {
+            $isPublic = true;
+        }
+        $builderDto = new DocumentationBuilderDto(
+            isPublic: $isPublic,
+            categoryId: new DocumentationCategoryBuilderDto\Category($categoryId),
+        );
+        $with = [
+            'content' => function (HasOne $hasOne) use ($documentation) {
+                $hasOne->where('language_id', $documentation->getWebsiteTranslations()->getLanguage()->id);
+            }
+        ];
+        return $this->documentationRepository->getDocumentations(
+            $documentation->getVersion()->id,
+            $builderDto,
+            $with
+        )->all();
+    }
+}

app/application/app/Services/Site/FeedbackService.php

@@ -5,32 +5,44 @@
 use App\Dto\Service\Site\Feedback\Send;
 use App\Models\Project;
 use App\Models\User;
+use App\Notifications\ReviewAdded;
 use App\ServiceResults\ServiceResultError;
 use App\ServiceResults\ServiceResultSuccess;
 use App\Services\ProjectFeedback\ProjectFeedbackCommandHandler;
 use App\Services\Service;
 use App\Services\WebsiteTranslations;
 use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Notification;
 
 final class FeedbackService extends Service
 {
     public function __construct(
         private readonly ProjectFeedbackCommandHandler $feedbackCommandHandler,
+        private readonly bool $isNotifications = false,
+        private readonly ?string $mailNotifications = null,
     ) { }
 
     public function send(Send $send, Project $project, WebsiteTranslations $websiteTranslations, ?User $user = null): ServiceResultError | ServiceResultSuccess
     {
         try {
-            DB::transaction(function () use ($send, $project, $user) {
+            $feedback = DB::transaction(function () use ($send, $project, $user) {
                 $data = $this->getDataFeedback($send);
                 $data['user_id'] = $user?->id;
-                $this->feedbackCommandHandler->handleStore($project, $data);
+                return $this->feedbackCommandHandler->handleStore($project, $data);
             });
         } catch (\Throwable $e) {
             report($e);
             return $this->errService($websiteTranslations->translate('Server Error'));
         }
 
+        try {
+            if ($this->isNotifications) {
+                Notification::route('mail', $this->mailNotifications)->notify(new ReviewAdded($feedback));
+            }
+        } catch (\Throwable $e) {
+            report($e);
+        }
+
         return $this->ok($websiteTranslations->translate('site.Message sent successfully'));
     }
 

app/application/app/View/Components/Site/ChooseVersion.php

@@ -0,0 +1,48 @@
+<?php declare(strict_types=1);
+
+namespace App\View\Components\Site;
+
+use App\Enums\CacheTag;
+use App\Models\DocumentationVersion;
+use App\Models\Project;
+use App\Models\User;
+use App\Services\WebsiteTranslations;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Str;
+use Illuminate\View\Component;
+use Illuminate\View\View;
+
+final class ChooseVersion extends Component
+{
+    public function __construct(
+        private readonly DocumentationVersion $version,
+        private readonly WebsiteTranslations  $websiteTranslations,
+        private readonly Project              $project,
+        private readonly ?User                $user,
+    ) { }
+
+    public function render(): View
+    {
+        $isPublic = null;
+        if (\is_null($this->user) || $this->user->cannot('viewAny', DocumentationVersion::class)) {
+            $isPublic = 1;
+        }
+
+        $seconds = 3600 * 12;
+        $versions = CacheTag::DocumantationVersion->getCache()
+            ->remember(self::class . $this->project->id . '-' . $isPublic ?? 0, $seconds, function () use ($isPublic) {
+                return $this->project->documentationVersions()
+                    ->when($isPublic, function (Builder $query) {
+                        $query->where('is_public', 1);
+                    })
+                    ->get();
+            });
+
+        return view('components.site.choose-version', [
+            'websiteTranslations' => $this->websiteTranslations,
+            'versions'            => $versions,
+            'version'             => $this->version,
+            'project'             => $this->project,
+        ]);
+    }
+}

app/application/app/View/Components/Site/DocumentationVersion.php

@@ -0,0 +1,23 @@
+<?php declare(strict_types=1);
+
+namespace App\View\Components\Site;
+
+use App\Services\WebsiteTranslations;
+use Illuminate\View\Component;
+use Illuminate\View\View;
+
+final class DocumentationVersion extends Component
+{
+    public function __construct(
+        private readonly \App\Models\DocumentationVersion $version,
+        private readonly WebsiteTranslations              $websiteTranslations,
+    ) { }
+
+    public function render(): View
+    {
+        return view('components.site.documentation-version', [
+            'websiteTranslations' => $this->websiteTranslations,
+            'version'             => $this->version,
+        ]);
+    }
+}

app/application/app/View/Components/Volt/Forms/Checkbox.php

@@ -27,12 +27,12 @@ private function getTitle(): string
 
     private function getCheckboxValue(): string
     {
-        return (string) old($this->getRequestName(), $this->checkboxValue);
+        return (string) $this->checkboxValue;
     }
 
     private function getUserValue(): string
     {
-        return (string) $this->userValue;
+        return (string) old($this->getRequestName(), $this->userValue);
     }
 
     private function getNotCheckedValue(): ?string

app/application/app/View/Components/Volt/Forms/Input.php

@@ -13,6 +13,7 @@ public function __construct(
         private readonly string $type = 'text',
         private readonly ?string $value = '',
         private readonly ?string $example = null,
+        private readonly ?string $allowedCharacters = null,
     ) { }
 
     protected function getName(): string
@@ -40,6 +41,11 @@ private function getExample(): ?string
         return $this->example;
     }
 
+    public function getAllowedCharacters(): ?string
+    {
+        return $this->allowedCharacters;
+    }
+
     /**
      * @inheritDoc
      */
@@ -52,6 +58,7 @@ public function render(): View
             'type' => $this->getType(),
             'value' => $this->getValue(),
             'example' => $this->getExample(),
+            'allowedCharacters' => $this->getAllowedCharacters(),
         ]);
     }
 }

app/application/app/View/Components/Volt/Forms/Languages.php

@@ -19,7 +19,7 @@ protected function getName(): string
     private function getValue(): array
     {
         $value = old($this->getRequestName(), null);
-        if (\is_null($value)) {
+        if (\is_null($value) || !isset($value['items']) || !\is_array($value['items'])) {
             return $this->value;
         }
 

app/application/app/View/Components/Volt/Forms/TextareaWysiwyg.php

@@ -2,15 +2,17 @@
 
 namespace App\View\Components\Volt\Forms;
 
+use App\Dto\View\Volt\Form\WysiwygStorageUpload;
 use Illuminate\Support\Str;
 use Illuminate\View\View;
 
 final class TextareaWysiwyg extends Form
 {
     public function __construct(
-        private readonly string $title,
-        private readonly string $name,
-        private readonly ?string $value = '',
+        private readonly string                $title,
+        private readonly string                $name,
+        private readonly ?string               $value = '',
+        private readonly ?WysiwygStorageUpload $storageUpload = null,
     ) { }
 
     protected function getName(): string
@@ -28,6 +30,11 @@ private function getValue(): string
         return (string) old($this->getRequestName(), $this->value);
     }
 
+    public function getStorageUpload(): ?WysiwygStorageUpload
+    {
+        return $this->storageUpload;
+    }
+
     /**
      * @inheritDoc
      */
@@ -37,10 +44,11 @@ public function render(): View
 
         return view('components.volt.forms.textarea-wysiwyg', [
             'tinymceLicenseKey' => $tinymceLicenseKey,
-            'title' => $this->getTitle(),
-            'name' => $this->getName(),
-            'requestName' => $this->getRequestName(),
-            'value' => $this->getValue(),
+            'title'             => $this->getTitle(),
+            'name'              => $this->getName(),
+            'requestName'       => $this->getRequestName(),
+            'value'             => $this->getValue(),
+            'storageUpload'     => $this->getStorageUpload(),
         ]);
     }
 }

app/application/composer.json

@@ -9,7 +9,8 @@
         "intervention/image-laravel": "^1.2",
         "kor-elf/captcha-rule-for-laravel": "^1.0",
         "laravel/framework": "^11.0",
-        "laravel/tinker": "^2.9"
+        "laravel/tinker": "^2.9",
+        "staudenmeir/laravel-adjacency-list": "^1.0"
     },
     "require-dev": {
         "barryvdh/laravel-debugbar": "^3.13",

app/application/composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "5e3226c3090c81571c830e2c383433ab",
+    "content-hash": "f7873c3a33599ee1ce0bbce99af9db22",
     "packages": [
         {
             "name": "brick/math",
@@ -3381,6 +3381,174 @@
             ],
             "time": "2023-11-08T05:53:05+00:00"
         },
+        {
+            "name": "staudenmeir/eloquent-has-many-deep-contracts",
+            "version": "v1.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/staudenmeir/eloquent-has-many-deep-contracts.git",
+                "reference": "bcbe1a921caad7201b324e297eddb696d4bd8647"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/staudenmeir/eloquent-has-many-deep-contracts/zipball/bcbe1a921caad7201b324e297eddb696d4bd8647",
+                "reference": "bcbe1a921caad7201b324e297eddb696d4bd8647",
+                "shasum": ""
+            },
+            "require": {
+                "illuminate/database": "^11.0",
+                "php": "^8.2"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Staudenmeir\\EloquentHasManyDeepContracts\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jonas Staudenmeir",
+                    "email": "mail@jonas-staudenmeir.de"
+                }
+            ],
+            "description": "Contracts for staudenmeir/eloquent-has-many-deep",
+            "support": {
+                "issues": "https://github.com/staudenmeir/eloquent-has-many-deep-contracts/issues",
+                "source": "https://github.com/staudenmeir/eloquent-has-many-deep-contracts/tree/v1.2"
+            },
+            "time": "2024-01-18T01:20:44+00:00"
+        },
+        {
+            "name": "staudenmeir/laravel-adjacency-list",
+            "version": "v1.22",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/staudenmeir/laravel-adjacency-list.git",
+                "reference": "0ec695e5d4094434f4a7adb956ebd23e228970ea"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/staudenmeir/laravel-adjacency-list/zipball/0ec695e5d4094434f4a7adb956ebd23e228970ea",
+                "reference": "0ec695e5d4094434f4a7adb956ebd23e228970ea",
+                "shasum": ""
+            },
+            "require": {
+                "illuminate/database": "^11.0",
+                "php": "^8.2",
+                "staudenmeir/eloquent-has-many-deep-contracts": "^1.2",
+                "staudenmeir/laravel-cte": "^1.11"
+            },
+            "require-dev": {
+                "barryvdh/laravel-ide-helper": "^3.0",
+                "larastan/larastan": "^2.0",
+                "mockery/mockery": "^1.5.1",
+                "orchestra/testbench": "^9.0",
+                "phpunit/phpunit": "^10.5",
+                "singlestoredb/singlestoredb-laravel": "^1.5.4",
+                "staudenmeir/eloquent-has-many-deep": "^1.20"
+            },
+            "suggest": {
+                "barryvdh/laravel-ide-helper": "Provide type hints for attributes and relations."
+            },
+            "type": "library",
+            "extra": {
+                "laravel": {
+                    "providers": [
+                        "Staudenmeir\\LaravelAdjacencyList\\IdeHelperServiceProvider"
+                    ]
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Staudenmeir\\LaravelAdjacencyList\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jonas Staudenmeir",
+                    "email": "mail@jonas-staudenmeir.de"
+                }
+            ],
+            "description": "Recursive Laravel Eloquent relationships with CTEs",
+            "support": {
+                "issues": "https://github.com/staudenmeir/laravel-adjacency-list/issues",
+                "source": "https://github.com/staudenmeir/laravel-adjacency-list/tree/v1.22"
+            },
+            "funding": [
+                {
+                    "url": "https://paypal.me/JonasStaudenmeir",
+                    "type": "custom"
+                }
+            ],
+            "time": "2024-04-19T12:11:45+00:00"
+        },
+        {
+            "name": "staudenmeir/laravel-cte",
+            "version": "v1.11",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/staudenmeir/laravel-cte.git",
+                "reference": "1e7063021febf9db7e47d8ea602f582b00d55da6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/staudenmeir/laravel-cte/zipball/1e7063021febf9db7e47d8ea602f582b00d55da6",
+                "reference": "1e7063021febf9db7e47d8ea602f582b00d55da6",
+                "shasum": ""
+            },
+            "require": {
+                "illuminate/database": "^11.0",
+                "php": "^8.2"
+            },
+            "require-dev": {
+                "orchestra/testbench": "^9.0",
+                "phpstan/phpstan": "^1.10",
+                "phpunit/phpunit": "^10.5"
+            },
+            "type": "library",
+            "extra": {
+                "laravel": {
+                    "providers": [
+                        "Staudenmeir\\LaravelCte\\DatabaseServiceProvider"
+                    ]
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Staudenmeir\\LaravelCte\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jonas Staudenmeir",
+                    "email": "mail@jonas-staudenmeir.de"
+                }
+            ],
+            "description": "Laravel queries with common table expressions",
+            "support": {
+                "issues": "https://github.com/staudenmeir/laravel-cte/issues",
+                "source": "https://github.com/staudenmeir/laravel-cte/tree/v1.11"
+            },
+            "funding": [
+                {
+                    "url": "https://paypal.me/JonasStaudenmeir",
+                    "type": "custom"
+                }
+            ],
+            "time": "2024-03-09T10:12:45+00:00"
+        },
         {
             "name": "symfony/clock",
             "version": "v7.0.5",