<?php

namespace Tools;

/**
 * Cms context
 * Contains all website informations
 * Will be passed to themes files and to modules
**/
class Context
{
    /**
     * @var \Tools\Hooks $hookManager
     * /core/tools/Hooks.php
     * allow triggering hooks and registers module's endpoints
     * Can be accessed read-only via $instance->hookManager
    **/
    private $hookManager;

    /**
     * @var \Tools\ModuleManager $moduleManager
     * /core/tools/ModuleManager.php
     * load all active modules and contains informations about them
     * Can be accessed read-only via $instance->moduleManager
    **/
    private $moduleManager;

    /**
     * @var \Tools\Router $router
     * /core/tools/Router.php
     * Contains information about directories and paths
     * Allow user to generate links
     * Can be accessed read-only via $instance->router
    **/
    private $router;

    /**
     * TODO
     * @var \Tools\Cart $cart
     * /core/tools/Cart.php
     * Not defined yet
     * Can be accessed read-only via $instance->cart
    **/
    private $cart;

    /**
     * TODO
     * @var \Tools\User $user (entity ?)
     * /core/tools/User.php
     * Can be accessed read-only via $instance->user
    **/
    private $user;

    /**
     * Create context from $_SERVER environment
     * and initialize all data
    **/
    public function __construct()
    {
        $this->hookManager = new Hooks($this);
        $this->router = new Router($this);
        if (!\Entity\ModelBase::init())
        {
            @require_once(getcwd().'/core/setup/index.php');
            die;
        }
        $this->router->init();
        $this->moduleManager = new ModuleManager($this);
        $this->hookManager->trigger("routerSetup");
        $this->router->serveUrl();
    }

    /**
     * Getter function
    **/
    public function __get($key)
    {
        switch ($key)
        {
            case "router": return $this->router; break;
            case "cart": return $this->cart; break;
            case "user": return $this->user; break;
            case "moduleManager": return $this->moduleManager; break;
            case "hookManager": return $this->hookManager; break;
        }
        throw new \Exception("Cannot access attribute {$key}");
    }
}