# Architecture & Structure

**Analysis Date:** 2026-04-30

---

## Directory Layout

```
centrumcopy.com.pl/           # Docroot / front controller
├── index.php                 # Front controller (entry point)
├── robots.txt
├── application/              # Application code (APPPATH)
│   ├── cache/                # Kohana internal cache (file-based)
│   ├── config/               # All configuration files
│   ├── controllers/          # MVC Controllers
│   │   ├── base_admin.php    # Abstract base for admin controllers
│   │   ├── base_front.php    # Abstract base for front controllers
│   │   ├── install.php       # Installation controller
│   │   ├── admin/            # Admin panel controllers
│   │   └── front/            # Public-facing controllers
│   ├── helpers/              # (empty — helpers live in libraries/drivers)
│   ├── i18n/pl_PL/           # Polish locale strings
│   ├── libraries/            # Extended/custom libraries
│   │   └── drivers/          # Driver extensions
│   ├── logs/                 # Error/application logs
│   ├── models/               # ORM models
│   └── views/                # PHP view templates
│       ├── admin/            # Admin panel partial views
│       ├── front/            # Public partial views
│       ├── gmaps/            # Google Maps JS view
│       ├── pagination/       # Pagination style templates
│       ├── admin_layout.php  # Admin full-page layout
│       ├── admin_login.php   # Admin login page
│       └── default_layout.php # Public full-page layout
├── modules/                  # Kohana modules (MODPATH)
│   ├── gmaps/                # Google Maps integration module
│   └── debug_toolbar/        # Debug toolbar module
├── system/                   # Kohana framework core (SYSPATH)
│   └── core/                 # Bootstrap, Event, Kohana, Benchmark
├── css/                      # Public stylesheets
├── js/                       # Public JavaScript (jQuery, TinyMCE, etc.)
├── images/                   # Public images
├── flash/                    # Flash banner assets
├── uploads/                  # User-uploaded files
└── stara/                    # Legacy static HTML site (archived)
```

---

## MVC Structure

### Controllers

**Location:** `application/controllers/`

Controllers use Kohana 2.x naming: `{Name}_Controller` extends a base class. File name is lowercase, class name is `PascalCase_Controller`.

**Base classes (abstract):**

| File | Class | Extends | Role |
|------|-------|---------|------|
| `application/controllers/base_front.php` | `Base_Front_Controller` | `Controller` | Sets up front layout (`default_layout`), session, menu, SEO metadata |
| `application/controllers/base_admin.php` | `Base_Admin_Controller` | `Controller` | Sets up admin layout (`admin_layout`), enforces auth guard, manages flash messages |

**Front (public) controllers** — `application/controllers/front/`:

| File | Class | Handles |
|------|-------|---------|
| `front/page.php` | `Page_Controller` | Static CMS pages, homepage redirect, contact page with Google Maps |
| `front/welcome.php` | `Welcome_Controller` | (unused/fallback) |

**Admin controllers** — `application/controllers/admin/`:

| File | Class | Handles |
|------|-------|---------|
| `admin/page.php` | `Page_Controller` | Edit CMS page content via TinyMCE |
| `admin/user.php` | `User_Controller` | Login, logout, password change |
| `admin/welcome.php` | `Welcome_Controller` | Admin dashboard index |

Note: Both `front/page.php` and `admin/page.php` define `Page_Controller` — they are isolated by directory scoping during routing.

**Auth guard pattern in `Base_Admin_Controller`:**
```php
if (!$this->session->get('admin') && Router::$method != 'login' && Router::$method != 'logout') {
    url::redirect('admin/login');
}
```

**`__call` magic method** is used in `Page_Controller` (front) to route any unknown URL segment to `show($name)`, enabling slug-based page lookup.

### Models

**Location:** `application/models/`

All models extend `ORM` (Kohana's ActiveRecord-style ORM). Model file name is lowercase; class name is `{Name}_Model`.

| File | Class | Table | Notes |
|------|-------|-------|-------|
| `models/page.php` | `Page_Model` | `page` | Singular table name; supports lookup by `name` slug |
| `models/user.php` | `User_Model` | `user` | Primary val = `username`; SHA1+salt password hashing |
| `models/news.php` | `News_Model` | `news` | Singular; sorted by `created_at DESC` |
| `models/gallery.php` | `Gallery_Model` | `gallery` | Has many `gallery_images`; sorted `created_at ASC` |
| `models/gallery_image.php` | `Gallery_Image_Model` | `gallery_image` | Belongs to `gallery`; sorted by `id ASC` |

**ORM lookup pattern:**
```php
ORM::factory('page')->where('name', $slug)->find();
if (!$page->loaded) { return $this->error404(); }
```

### Views

**Location:** `application/views/`

Views are plain PHP templates. Layout views are full HTML documents; partial views are HTML fragments assigned to `$content`.

**Layout views (full pages):**

| File | Used by |
|------|---------|
| `views/default_layout.php` | All front controllers via `Base_Front_Controller` |
| `views/admin_layout.php` | All admin controllers via `Base_Admin_Controller` |
| `views/admin_login.php` | `User_Controller::login()` |

**Partial views — front:** `views/front/`

| File | Rendered by |
|------|-------------|
| `front/page_show.php` | `Page_Controller::show()` |
| `front/page_contact.php` | `Page_Controller::contact()` |
| `front/error404.php` | `Base_Front_Controller::error404()` |

**Partial views — admin:** `views/admin/`

| File | Rendered by |
|------|-------------|
| `admin/page_edit.php` | `admin/Page_Controller::edit()` |
| `admin/password.php` | `User_Controller::password()` |
| `admin/welcome.php` | `admin/Welcome_Controller::index()` |
| `admin/error404.php` | `Base_Admin_Controller::error404()` |

**View rendering pattern:**
```php
$page_view = new View('front/page_show');
$page_view->page = $page;           // assign data to partial
$this->view->content = $page_view;  // embed partial in layout
$this->view->render(true);          // output full layout
```

---

## Routing

**Config file:** `application/config/routes.php`

Kohana 2.x routing maps URL patterns (regex) to `directory/controller/method` targets. Routes are evaluated top-to-bottom; first match wins.

```php
$config['_default'] = 'front/page/homepage';          // / → Front\Page::homepage()

// Admin routes
$config['admin']              = 'admin/welcome/';      // /admin
$config['admin/login']        = 'admin/user/login';    // /admin/login
$config['admin/logout']       = 'admin/user/logout';   // /admin/logout
$config['admin/password']     = 'admin/user/password'; // /admin/password
$config['admin/page/(.*)']    = 'admin/page/edit/$1';  // /admin/page/{slug}
$config['admin/(.*)']         = 'admin/$1';            // /admin/...

// Front routes
$config['kontakt']            = 'front/page/contact';  // /kontakt
$config['galeria/?(.*)']      = 'front/gallery/$1';    // /galeria/...
$config['aktualnosci/?(.*)']  = 'front/news/$1';       // /aktualnosci/...
$config['(.+)']               = 'front/page/$1';       // /{any-slug} → Page::show()
```

**Slug routing:** The catch-all `(.+)` route passes the URL slug to `front/page/`. `Page_Controller::show($name)` then queries the database for a page with `name = $slug`. This means all CMS pages live in a flat namespace matched against the `page.name` column.

**URL rewriting:** `index_page` is commented out in `application/config/config.php`, meaning clean URLs (no `index.php` in path) require Apache `mod_rewrite` or equivalent.

---

## Module System

**Module path:** `modules/` (MODPATH)

Modules are configured in `application/config/config.php` under `$config['modules']`. Kohana merges module paths into the file search cascade (controllers, views, libraries, etc. from a module are auto-discoverable).

**Active modules:**

| Module | Path | Purpose |
|--------|------|---------|
| `gmaps` | `modules/gmaps/` | Google Maps v2 API wrapper — `Gmap` library, marker helpers, JS view |

**Available but disabled modules** (commented out in config):
- `auth`, `forge`, `kodoc`, `media`, `archive`, `payment`, `unit_test`, `object_db`

**`debug_toolbar` module** exists at `modules/debug_toolbar/` but is **not loaded** in config.

**Module internal structure** (gmaps example):
```
modules/gmaps/
├── config/        # Module config
├── controllers/   # Module controllers (if any)
├── i18n/
├── libraries/     # Gmap, Gmap_Marker libraries
├── models/
└── views/         # gmaps/javascript.php
```

**Custom application-level extensions** (not modules — override framework classes):

| File | Purpose |
|------|---------|
| `application/libraries/MY_Database.php` | Extends `Database_Core` — fixes `COUNT()` column escaping with table prefix |
| `application/libraries/MY_Gmap_Marker.php` | Extends Gmap marker from the gmaps module |
| `application/libraries/drivers/Database.php` | Custom database driver wrapper |
| `application/libraries/drivers/MY_form.php` | Extended form helper |
| `application/libraries/drivers/MY_html.php` | Extended html helper (adds `span_class()`, etc.) |
| `application/libraries/drivers/MY_valid.php` | Extended validation rules |
| `application/libraries/drivers/categories.php` | Category tree helper |
| `application/libraries/drivers/javascript.php` | JavaScript generation helper |

---

## Business Domains

This is a **B2B product catalogue + CMS** for a photocopier/office equipment distributor (Centrum Copy Rzeszów).

### CMS / Static Pages
- **Primary domain.** All content pages are rows in the `page` table, looked up by a URL `name` slug.
- Pages have: `title`, `header`, `content` (HTML via TinyMCE), `meta_description`, `meta_keywords`.
- Admin edits pages via WYSIWYG at `/admin/page/{slug}`.
- Menu structure is **hardcoded** in `application/config/application.php` under `$config['menu_nav']` — changing the menu requires a code deploy.
- Content domains visible in admin menu: O firmie, Powielacze cyfrowe RISO, Pełnokolorowe urządzenia Inkjet RISO ComColor, Urządzenia biurowe (kolorowe/monochromatyczne A4/A3), Plotery i skanery, Finansowanie, Serwis, Usługi, Kontakt, Szybki kontakt.

### Gallery
- Model: `Gallery_Model` (has_many `Gallery_Image_Model`)
- Route: `/galeria/...` → `front/gallery` controller
- Note: `application/controllers/front/gallery.php` does not exist as a file — gallery controller is **missing or not committed**.

### News / Aktualności
- Model: `News_Model`
- Route: `/aktualnosci/...` → `front/news` controller
- Note: `application/controllers/front/news.php` does not exist — news controller is **missing or not committed**.

### Contact Page
- Route `/kontakt` → `Page_Controller::contact()`
- Renders Google Maps v2 marker at configured lat/lon (`application/config/application.php` → `$config['gmaps']`).
- Google Maps centre: `50.0491231, 21.9869502` (Rzeszów, ul. Okulickiego 9).

### Admin Panel
- Session-based authentication. Credentials: SHA1(salt + password) stored in `user` table.
- Single-user admin — no roles enforced beyond session presence.
- Admin navigates to hardcoded page slugs from the sidebar in `admin_layout.php`.
- Features: edit page content, change admin password, logout.

---

## Request Lifecycle

```
Browser Request
      |
      v
index.php                        (front controller)
  - defines DOCROOT, APPPATH, MODPATH, SYSPATH
  - sets IN_PRODUCTION = false
  - requires system/core/Bootstrap.php
      |
      v
system/core/Bootstrap.php
  - loads Benchmark, utf8, Event, Kohana
  - Kohana::setup()              (loads config, modules, sets error handlers)
      |
      v
Event::run('system.ready')       (hooks, if enabled — currently disabled)
      |
      v
Event::run('system.routing')
  - Router matches URI against application/config/routes.php
  - Determines: directory, controller, method, arguments
      |
      v
Event::run('system.execute')
  - Instantiates controller: new {Name}_Controller()
    - __construct() runs:
      - parent::__construct()    (Kohana base Controller)
      - Base_Front/Admin_Controller::__construct()
        - Creates View object for layout
        - Starts Session
        - Loads config (title, meta, menu_nav, etc.)
        - [Admin only] Auth guard → redirect to login if not authed
  - Calls controller method (e.g., show(), edit(), login())
    - Method queries ORM models
    - Creates partial View, assigns data
    - Assigns partial to $this->view->content
    - $this->view->render(true) → outputs full HTML
      |
      v
Event::run('system.shutdown')    (cleanup)
      |
      v
Response sent to browser
```

**Session:** Native PHP sessions, 30-minute expiration, validated by `user_agent`. Session name: `Frisson_session`.

**Database:** MySQLi driver, single `default` connection, no table prefix, UTF-8 charset, query benchmarking enabled.

**Output compression:** gzip enabled (`$config['output_compression'] = TRUE`).

**Error handling:** Errors logged to `application/logs/` at threshold 1 (errors + exceptions). `display_errors` is off in production.

---

## Configuration Files

| File | Purpose |
|------|---------|
| `application/config/application.php` | Site title, email, Google Maps coords, navigation menu, Google Analytics |
| `application/config/config.php` | Kohana core settings: domain, modules list, cache, compression, hooks |
| `application/config/database.php` | MySQLi connection credentials |
| `application/config/routes.php` | URL routing rules |
| `application/config/session.php` | Session driver, name, expiration |
| `application/config/pagination.php` | Pagination defaults (5 items/page, segment 3) |
| `application/config/email.php` | Email settings |
| `application/config/cookie.php` | Cookie settings |
| `application/config/tiny_mce.php` | TinyMCE upload paths for admin editor |
| `application/config/upload.php` | File upload settings |
| `application/config/locale.php` | Locale/timezone |
| `application/config/gmaps.php` | Google Maps module config |
| `application/config/debug_toolbar.php` | Debug toolbar settings |

---

## Key Observations & Gaps

1. **Missing controllers:** `application/controllers/front/gallery.php` and `application/controllers/front/news.php` are referenced in routes but absent. Routes for `/galeria/` and `/aktualnosci/` will 404.

2. **Hardcoded navigation:** `$config['menu_nav']` in `application/config/application.php` defines the entire site menu statically. Adding/removing menu items requires editing this config file and redeploying.

3. **Admin menu also hardcoded:** `application/views/admin_layout.php` contains inline HTML listing every editable page slug. Must be manually updated to match `page` table contents.

4. **IN_PRODUCTION = false:** Set in `index.php`. Must be changed to `true` before deploying to live server to enable Google Analytics and suppress demo controllers.

5. **Kohana version:** 2.3.4 (codename "buteo regalis") — very old, unmaintained framework. No Composer, no autoloading beyond Kohana's own file cascade.

6. **Auth security:** `User_Controller::login()` contains `print_r($_POST)` debug statement (line 29). This leaks credentials in the HTTP response. Remove before any production use.

7. **No test runner configured.** No test files detected.