# Architecture

> Generated: 2026-04-26

## Overview

cmsPRO uses a **3-layer architecture** with clean admin/frontend separation:

```
Request
  ↓
Controls (admin\controls\ or front\controls\)   ← request handling
  ↓
Factories (admin\factory\ or front\factory\)    ← DEPRECATED wrappers → will be removed
  ↓
Domain Repositories (Domain\*\*Repository)      ← data access (new pattern)
  ↓
Medoo ORM → MySQL
```

Views are rendered through `admin\view\*` / `front\view\*` → `Shared\Tpl\Tpl` → Savant3 templates.

## Directory Map

```
autoload/
├── autoloader.php                  Hybrid PSR-4 + legacy autoloader
├── class.S.php                     Global helper facade (deprecated wrapper)
├── class.Article.php               Legacy entity (ArrayAccess)
├── class.Page.php                  Legacy entity
├── class.Scontainer.php            Legacy entity
├── class.Cache.php / class.Cron.php / class.Image.php / class.Html.php
│
├── Domain/                         NEW — Repository pattern, DDD
│   ├── Articles/ArticlesRepository.php      (648 lines)
│   ├── Authors/AuthorsRepository.php        (156 lines)
│   ├── Banners/BannersRepository.php        (148 lines)
│   ├── Languages/LanguagesRepository.php    (213 lines)
│   ├── Layouts/LayoutsRepository.php        (123 lines)
│   ├── Newsletter/NewsletterRepository.php  (281 lines)
│   ├── Pages/PagesRepository.php            (451 lines)
│   ├── Scontainers/ScontainersRepository.php (110 lines)
│   ├── Settings/SettingsRepository.php      (73 lines)
│   └── User/UserRepository.php              (235 lines)
│
├── Shared/                         Cross-cutting services
│   ├── Helpers/Helpers.php         God class — 1220 lines (⚠ needs splitting)
│   ├── Tpl/Tpl.php                 Template renderer (checks templates_user/ first)
│   ├── Email/Email.php             Email service (wraps PHPMailer)
│   ├── Cache/CacheHandler.php      File-based cache (gzdeflate, TTL)
│   ├── Security/CsrfToken.php      CSRF token generation + validation
│   ├── Html/Html.php               HTML form element builder
│   └── Image/ImageManipulator.php  Image processing
│
├── admin/                          Mixed: legacy lowercase namespaces + new Admin\* PSR-4
│   │
│   │  NEW (Phase 6) — namespace Admin\* (PascalCase, PSR-4)
│   ├── ViewModels/Forms/           Admin\ViewModels\Forms\* — Form Edit System (5 VMs, 687 L)
│   ├── Validation/FormValidator.php
│   ├── Support/TableListRequestFactory.php   Admin\Support — list parser
│   ├── Support/Forms/FormRequestHandler.php  POST + CSRF + validate + persist
│   ├── Support/Forms/FormFieldRenderer.php   HTML renderer (delegates Shared\Html\Html)
│   │
│   │  LEGACY — namespace admin\* (lowercase, hybrid loader)
│   ├── class.Site.php              Admin routing + 2FA
│   ├── controls/class.*.php        18 request handler classes (static methods)
│   ├── factory/class.*.php         18 @deprecated wrappers
│   └── view/class.*.php            14 template renderer classes
│
└── front/
    ├── controls/class.Site.php     Main frontend router
    ├── controls/class.*.php        4 frontend controllers
    ├── factory/class.*.php         17 frontend factories
    └── view/class.*.php            View renderers

admin/
├── index.php                       Admin entry point (IP check, session, routing)
├── ajax.php                        Admin AJAX dispatcher → admin/ajax/*.php
└── templates/                      Admin Savant3 templates (per module)

templates/                          Frontend Savant3 templates
templates_user/                     User-overridable template overrides
plugins/
├── special-actions.php             Hook: pre-routing
├── special-actions-middle.php      Hook: mid-request
└── special-actions-end.php         Hook: post-rendering
```

## Namespace Convention

| Namespace | Path | Convention |
|-----------|------|-----------|
| `admin\controls\` | `autoload/admin/controls/class.*.php` | Legacy lowercase |
| `admin\factory\` | `autoload/admin/factory/class.*.php` | Legacy, @deprecated |
| `admin\view\` | `autoload/admin/view/class.*.php` | Legacy lowercase |
| `front\controls\` | `autoload/front/controls/class.*.php` | Legacy lowercase |
| `front\factory\` | `autoload/front/factory/class.*.php` | Legacy lowercase |
| `Domain\*\` | `autoload/Domain/*/ClassName.php` | PSR-4 PascalCase |
| `Shared\*\` | `autoload/Shared/*/ClassName.php` | PSR-4 PascalCase |
| `Admin\*\` | `autoload/admin/*/ClassName.php` | PSR-4 PascalCase namespace, lowercase folder (Win fs collision with legacy) |

## Key Patterns

### Repository Pattern (Domain layer)
```php
class ArticlesRepository {
    public function __construct($db) { $this->db = $db; }
    public function find(int $id): ?array { ... }
    public function save(...): int { ... }
}
```

### Factory Wrapper (deprecated bridge)
```php
/** @deprecated Używaj Domain\Articles\ArticlesRepository przez DI */
class Articles {
    private static function repo(): ArticlesRepository {
        global $mdb;
        return new ArticlesRepository($mdb);
    }
    public static function article_delete($id): bool {
        return self::repo()->deleteArticle($id);
    }
}
```

### Controls (request handler)
```php
class Articles {
    public static function article_delete() {
        global $user;
        if (!admin\factory\Users::check_privileges('articles', $user['id']))
            return \S::alert('Brak uprawnień');
        // delegate to factory → repository
    }
}
```

### Global Helper Facade
```php
// class.S.php — calls Shared\Helpers\Helpers via __callStatic
\S::get('param')          // → Helpers::get()
\S::delete_cache()        // → Helpers::delete_cache()
```

## Admin Routing

`GET /admin/?a=articles&action=view_list` → `admin\controls\Articles::view_list()`

Routing in `admin/index.php`: reads `$_GET['a']` → dynamically loads control class → calls action method.

## Frontend Routing

`index.php` → `front\controls\Site::route()` — checks `\S::get('search')`, `\S::get('tag')`, `\S::get('article')`, then falls through to page rendering by `page_type`.

## Caching Strategy

| Cache Type | Location | Engine |
|-----------|----------|--------|
| Page cache | `cache/` | Full HTML output |
| Object cache | `temp/md5[0]/md5[1]/` | gzdeflate + serialize, TTL |
| WebP images | `cache/` | Filesystem |
| Language strings | `$_SESSION` | PHP session |

## Plugin System

3 hook points in frontend lifecycle (files in `plugins/` directory, included if they exist):
1. `special-actions.php` — after language init, before routing
2. `special-actions-middle.php` — before cache check
3. `special-actions-end.php` — before final output