basket.html

<?php


class BasketWidget {
  
  public static function view(Perspective $perspective) {
    $b = Basket::current();
    
    if ($b->isEmpty()) {
      $items = '<a href="'.Basket::url().'">Košík</a> je prázdný';
    } else {
      $items = 'V <a href="'.Basket::url().'">košíku</a> máte<br> <strong>'.$b->itemCount().'</strong> položky
                    <p>za <span class="cena_overall">'.$b->sumItems().'&nbsp;€</span></p>';
    }
    
    return '
          <div id="kosik">
            <div id="kosik_text">
              '.$items.'
            </div>
          </div>';
  }  
}




MainController::$directUrls['kosik'] = 'BasketController';

class BasketController {
  
  public function execute($controller) {    
    $controller->handlePost(Perspective::getActual());
    
    $b = Basket::current();
    
    if (array_key_exists('remove', $_GET)) {
      $bi = new BasketItem();
      $bi->productId = $_GET['remove'];
      $b->removeItem($bi);
    }
    
    if ($_GET['step'] === "2") {
      $html = $this->chooseOrderDetails();
    } else if ($_GET['step'] === "3") {
      $html = $this->confirmOrder($b);
    } else {
      $html = $this->showBasket($b);
    }
    
    $html = '<div class="textPage">'.$html.'</div>';
    Response::set('content', $html);
    return $controller->output();
  }
  
  public function showBasket(Basket $b) {
    $items = '';
    foreach ($b->getItems() as $item) {
      if (array_key_exists('amount'.$item->productId, $_POST)) {
        $amount = $_POST['amount'.$item->productId];
        $b->setAmount($item, $amount);
      }
    }
    
    foreach ($b->getItems() as $item) {
      // můžeš psát, můžeš stylovat :), ale stránky netrhat
      $items .= "<tr><td class=\"name\">".$item->title.
        "&nbsp;(<a href=\"?remove=".$item->productId."\" class=\"remove\">x</a>)".
        "<img src=\"".$item->image."\" /></td><td>".
        $item->description."</td><td>".($item->price * $item->amount)."&nbsp;€</td><td>".
        "<input type=\"text\" name=\"amount".$item->productId."\" size=\"2\" value=\"".$item->amount."\" /></td></tr>";
    }
    $b->persist();
    
    return '<form method="post">
          <h1>Košík</h1>
          <input type="submit" value="Přepočítat" style="display:none"/>
          <table class=\"basket\">          
            '.$items.'
          </table>
          <input type="submit" value="Přepočítat" class="recount"/>
        </form>
        <form action="'.Basket::url().'" method="get">
          <input type="hidden" value="2" name="step" />
          <input type="submit" value="Vybrat způsob platby a dopravu &raquo;" class="purchase"/>
        </form>
      ';    
  }
  
  public function chooseOrderDetails() {
    return '<form action="'.Basket::url().'" method="get">
      <input type="hidden" value="3" name="step" />
      <select name="shipment">
        <option>A</option>
        <option>B</option>
        <option>C</option>        
      </select>
      <input type="submit" value="Potvrzuji objednávku &raquo;" class="purchase"/>
    </form>';
  }
  
  public function confirmOrder(Basket $b) {
    $b->shipment = $_GET['shipment'];
    $b->save();
    return '<h1>Děkujeme!</h1>
      <p>.. sem přijde info o tom, co se bude dít dál ..</p>
    ';
  }
}






class Basket extends Node
{
  private $items = array();
  protected $items_json;
  public $shipment;
  
  public function getItems() {
    return $this->items;
  }
  
  public static function url() {
    return 'http://'.Perspective::getActual()->getSiteUrl().'kosik/';
  }
  
  public static function current() {
    if ($id = Session::get('basket_id')) {
      $b = Tree::getNodeById($id, 'basket');
    } else {
      $b = Basket::fromSession($session);
    }
    return $b;
  }

  public function toJson() {
    return json_encode($this->toArray());
  }
  
  public function toArray() {
    $array = array(
      'items' => array() // itemy strcim sem
    );
    foreach ($this->items as $item) {
      $array['items'][]= $item->toArray();
    }
    $array['shipment'] = $this->shipment; // pridal jsem do pole, ktere reprezentuje kosik shipment
    return $array;
  }

  public static function fromJson($json) {
    return Basket::fromArray(json_decode($json, true));
  }
  
  public static function fromArray($array) {
    $b = new Basket();
    foreach ($array['items'] as $itemArray) { // itemy jsou ted v tehle casti pole
      $item = BasketItem::fromArray($itemArray);
      $b->addItem($item, $item->amount);
    }    
    $this->shipment = $array['shipment']; // shipment je zas tu
    // je videt o co jde? jj obecne to chapu, mohl bys mi to prosim zkopirovat
    return $b;
  }
  
  public function persist() {
    $this->persistToSession();
  }
  
  public function persistToSession() {
    Session::store('basket', $this->toJson());
  }  
  
  public static function fromSession() {    
    if ($json = Session::get('basket')) {
      return Basket::fromJson($json);
    } else {
      return new Basket();
    }
  }
  
  public function save() {
    if ($this->items) {
      $this->items_json = $this->toJson();
    }
    return parent::save();
  }
  
  public function addItem(BasketItem $item, $amount) {
    if ($amount < 1) {
      return;
    }
    if ($bi = $this->item($item)) {
      $this->items[$item->productId] = $item;
      $item->amount = $bi->amount + $amount;
      return $bi;
    } else {
      $this->items[$item->productId] = $item;
      $item->amount = $amount;
      return $item;
    }
  }  
  
  public function setAmount(BasketItem $item, $amount) {
    if ($bi = $this->item($item)) {
      if ($amount > 0) {
        $bi->amount = $amount;
      } else {
        $this->removeItem($bi);
      } 
    } else {
      throw new Exception('Item ');
    }
  }
  
  public function removeItem(BasketItem $item) {
    if ($this->contains($item)) {
      $this->items = Basket::array_remove_key($this->items, $item->productId);
    }
  }
  
  private static function array_remove_key() {
    $args  = func_get_args();
    return array_diff_key($args[0],array_flip(array_slice($args,1)));
  }
    
  public function contains(BasketItem $item) {
    return array_key_exists($item->productId, $this->items);
  }
  
  public function item(BasketItem $item) {
    if ($this->contains($item)) {
      return $this->items[$item->productId];
    }
    return null;
  } 

  public function itemCount() {
    $amount = 0;
    foreach ($this->items as $item) {
      $amount += $item->amount;
    }
    return $amount;
  }
  
  public function isEmpty() {
    return $this->itemCount() == 0;
  }
  
  public function sumItems() {
    $sum = 0;
    foreach($this->items as $item) {
      $sum += $item->price * $item->amount;
    }
    return $sum;
  }

	public function typeName() { return "Nákupní košík"; }
	public function isManagable() {	return true; }

  static function createMapping()	{
		$m = new ClassMapping('basket');
		$m->add(new IntegerMapping('id'));
		$m->add(new IntegerMapping('customerId'));
		$m->add(new StringMapping('items_json'));
		$m->add(new StringMapping('finalPrice'));
		return $m;
	}

  function onInstall() {
	}

  function beforeSave() {
	}

}



include('basket_insert_action.php');

class BasketForm extends NodeForm
{
	function __construct()
	{
		parent::__construct();
		$name = $this->add(new StringField('Označení košíku','node/name'));
		$name->addFilter(new NotEmptyFilter('Název musí být vyplňěn.'));
		$this->add(new LocationField('Umístění','node/parentId'));
		$this->add(new StringField('ID zákazníka','node/customerId'));
		//$this->add(new StringField('ID Session','node/sessionId'));
		//$this->add(new StringField('Počet položek v košíku','node/items'));
		$this->add(new IntegerField('Konečná cena','node/finalPrice'));
	}

}