<?php

/**
* @package ecommerce
*/

/**
* DeliverychargeModifier is based on the default shipping calculation scheme.
* It lets you set shipping costs by quantity
*/
class DeliveryChargeModifier extends OrderModifier {
protected static $is_chargable = true;
static $default_charge = 0.7;

/*static $charges_by_quantity = array( 1 => 0.7, 4 => 1.5, 7 => 3);*/
    static $charges_by_quantity = array( 1 => 1.48, 2 => 1.78, 3 => 5.90, 4 => 7.90, 5 => 9.75, 8 => 11.25, 9 => 16.0);

static function set_charges($charge) {
self::$default_charge = $charge;
}

function LiveAmount() {
$o = ShoppingCart::current_order();
$orderItems = $o->Items();

// Calculate the total quantity of the order
if($orderItems){
foreach($orderItems as $orderItem){
$totalQuantity += $orderItem->quantity;
}
}

//calculate packaging cost
foreach(self::$charges_by_quantity as $quan => $price){
if ($totalQuantity >= $quan){
$totalCost = $price;// * $totalQuantity;
}
}

return $totalCost;
    }

// Display Functions

   function TableTitle() {
      return "Postage and packaging";
   }
   function CartTitle() {return 'Postage and packaging: ';}
}

?>

<?php

/**
* Implementation of Payment that supports PayPal Website Payment Standard
* (https://www.paypal.com/IntegrationCenter/ic_standard_home.html) as its payment processor
*
* Configure using PayPalPayment::setMyVariable(value);
* in www.mysite.com/ecommerce/_config.php file
*
* Must configure:
*
* $setPayPalRealAccount;
* $setPayPalTestAccount;
* $setPayPalUseTestAccount;
*
* Optionally configure:
*
* $setPayPalImageLocation;
* $setPayPalContinueNextButton;
* $setPayPalPurchaseName;
* $setPayPalCppHeaderImage;
* $setPayPalCppHeaderBackcolor;
* $setPayPalCppHeaderBordercolor;
* $setPayPalCppPayflowColor;
* $setPayPalCs;
* REQUIREMENTS:
*
* Need to add: "PayPalInstructions" field to CheckoutPage.php
*
* static $db = array(
* "PayPalInstructions" => "HTMLText"
* );
*
* Have a PayPalPaymentPage.ss template or replace some code below
* (search for renderWith). On the PayPalPaymentPage you can use
* $PayPalInstructions (see above)
*
* @package payment
*/
class PayPalPayment extends Payment {
   static $db = array(
      'AuthorisationCode' => 'Text'
   );
   
   // PayPal Informations
   
   protected static $privacy_link = 'https://www.paypal.com/us/cgi-bin/webscr?cmd=p/gen/ua/policy_privacy-outside';
   
   protected static $logo = 'payment/images/payments/paypal.jpg';
   
   // URLs

   protected static $url = 'https://www.paypal.com/cgi-bin/webscr';
   
   protected static $test_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr';

   // Test Mode

   protected static $test_mode = false;
   
   protected static $test_account_email;
   
   static function set_test_mode($test_account_email) {
      self::$test_mode = true;
      self::$test_account_email = $test_account_email;
   }

   // Payment Informations

   protected static $account_email;
   
   static function set_account_email($account_email) {self::$account_email = $account_email;}

   // PayPal Pages Style Optional Informations

   protected static $continue_button_text;
   
   static function set_continue_button_text($continue_button_text) {self::$continue_button_text = $continue_button_text;}

   protected static $header_image_url;
   
   static function set_header_image_url($header_image_url) {self::$header_image_url = $header_image_url;}

   protected static $header_back_color;
   
   static function set_header_back_color($header_back_color) {self::$header_back_color = $header_back_color;}

   protected static $header_border_color;
   
   static function set_header_border_color($header_border_color) {self::$header_border_color = $header_border_color;}

   protected static $payflow_color;
   
   static function set_payflow_color($payflow_color) {self::$payflow_color = $payflow_color;}

   protected static $back_color;
   
   static function set_back_color_black() {self::$back_color = '1';}

   protected static $image_url;
   
   static function set_image_url($image_url) {self::$image_url = $image_url;}

   protected static $page_style;
   
   static function set_page_style($page_style) {self::$page_style = $page_style;}
   
   function getPaymentFormFields() {
      $logo = '<img src="' . self::$logo . '" alt="Credit card payments powered by PayPal"/>';
      $privacyLink = '<a href="' . self::$privacy_link . '" target="_blank" title="Read PayPal\'s privacy policy">' . $logo . '</a><br/>';
      return new FieldSet(
         new LiteralField('PayPalInfo', $privacyLink),
         new LiteralField(
            'PayPalPaymentsList',
            '<img src="payment/images/payments/methods/visa.jpg" alt="Visa"/>' .
            '<img src="payment/images/payments/methods/mastercard.jpg" alt="MasterCard"/>' .
            '<img src="payment/images/payments/methods/american-express.gif" alt="American Express"/>' .
            '<img src="payment/images/payments/methods/discover.jpg" alt="Discover"/>' .
            '<img src="payment/images/payments/methods/paypal.jpg" alt="PayPal"/>'
         )
      );
   }

   function getPaymentFormRequirements() {return null;}

   function processPayment($data, $form) {
      $page = new Page();

      $page->Title = 'Redirection to PayPal...';
      $page->Logo = '<img src="' . self::$logo . '" alt="Payments powered by PayPal"/>';
      $page->Form = $this->PayPalForm();

      $controller = new Page_Controller($page);
      
      $form = $controller->renderWith('PaymentProcessingPage');

      return new Payment_Processing($form);
   }

   function PayPalForm() {
      Requirements::javascript(THIRDPARTY_DIR . '/jquery/jquery.js');
      
      // 1) Main Informations
      
      $order = $this->Order();
      $items = $order->Items();
      $member = $order->Member();
      
      // 2) Main Settings
      
      $url = self::$test_mode ? self::$test_url : self::$url;
      $inputs['cmd'] = '_cart';
      $inputs['upload'] = '1';
      
      // 3) Items Informations
      
      $cpt = 0;
      foreach($items as $item) {
         $inputs['item_name_' . ++$cpt] = $item->TableTitle();
         // item_number is unnecessary
         $inputs['amount_' . $cpt] = $item->UnitPrice();
         $inputs['quantity_' . $cpt] = $item->Quantity;
      }
      
      // 3.1) Modifiers
if($modifiers = $order->Modifiers()) {
foreach($modifiers as $modifier)
{
$inputs['item_name_' . ++$cpt] = $modifier->TableTitle();
// item_number is unnecessary
$inputs['amount_' . $cpt] = $modifier->LiveAmount();
$inputs['quantity_' . $cpt] = 1;
}
}

      // 4) Payment Informations And Authorisation Code

      $inputs['business'] = self::$test_mode ? self::$test_account_email : self::$account_email;
      $inputs['custom'] = $this->ID . '-' . $this->AuthorisationCode;
      // Add Here The Shipping And/Or Taxes
      $inputs['currency_code'] = $this->Currency;

      // 5) Redirection Informations

      $inputs['cancel_return'] = Director::absoluteBaseURL() . PayPalPayment_Handler::cancel_link($inputs['custom']);
      $inputs['return'] = Director::absoluteBaseURL() . PayPalPayment_Handler::complete_link();
      $inputs['rm'] = '2';
      // Add Here The Notify URL

      // 6) PayPal Pages Style Optional Informations

      if(self:: $continue_button_text) $inputs['cbt'] = self::$continue_button_text;

      if(self::$header_image_url) $inputs['cpp_header_image'] = urlencode(self::$header_image_url);
      if(self::$header_back_color) $inputs['cpp_headerback_color'] = self::$header_back_color;
      if(self::$header_border_color) $inputs['cpp_headerborder_color'] = self::$header_border_color;
      if(self::$payflow_color) $inputs['cpp_payflow_color'] = self::$payflow_color;
      if(self::$back_color) $inputs['cs'] = self::$back_color;
      if(self::$image_url) $inputs['image_url'] = urlencode(self::$image_url);
      if(self::$page_style) $inputs['page_style'] = self::$page_style;

      // 7) Prepopulating Customer Informations

      $inputs['first_name'] = $member->FirstName;
      $inputs['last_name'] = $member->Surname;
      $inputs['address1'] = $member->Address;
      $inputs['address2'] = $member->AddressLine2;
      $inputs['city'] = $member->City;
      $inputs['country'] = $member->Country;
      $inputs['email'] = $member->Email;

      if($member->hasMethod('getState'))   $inputs['state'] = $member->getState();
      if($member->hasMethod('getZip')) $inputs['zip'] = $member->getZip();

      // 8) Form Creation
      foreach($inputs as $name => $value) {
         $ATT_value = Convert::raw2att($value);
         $fields .= "<input type=\"hidden\" name=\"$name\" value=\"$ATT_value\" />";
      }

      return <<<HTML
         <form id="PaymentForm" method="post" action="$url">
            $fields
            <input type="submit" value="Submit" />
         </form>
         <script type="text/javascript">
            jQuery(document).ready(function() {
               jQuery("input[type='submit']").hide();
               jQuery('#PaymentForm').submit();
            });
         </script>
HTML;
   }
}

/**
* Handler for responses from the PayPal site
*/
class PayPalPayment_Handler extends Controller {

   static $URLSegment = 'paypal';
   
   static function complete_link() {
      return self::$URLSegment . '/complete';
   }
   
   static function cancel_link($custom) {
      return self::complete_link() . '?custom=' . $custom;
   }

   /**
    * Manages the 'return' and 'cancel' PayPal replies
    * To-do : Escape as SQL : SQL_data
    */
   function complete() {
      if(isset($_REQUEST['custom']) && $custom = $_REQUEST['custom']) {
         $params = explode('-', $custom);
         if(count($params) == 2) {
            if($payment = DataObject::get_by_id('PayPalPayment', $params[0])) {
               if($payment->AuthorisationCode == $params[1]) {
                  if(isset($_REQUEST['payment_status']) && $_REQUEST['payment_status'] == 'Completed') {
                     $payment->Status = 'Success';
                     $payment->TxnRef = $_REQUEST['txn_id'];
                  }
                  else $payment->Status = 'Failure';
                  
                  $payment->write();
                  
                  $payment->redirectToOrder();
               }
               else {
                  user_error('error 1');
               }
            }
            else {
               user_error('error 2');
            }
         }
         else {
            user_error('error 3');
         }
      }
      else {
         user_error('error 4');
         Debug::show($_REQUEST);
      }
   }
}

/* what comes back from Paypal as get variables (see https://www.paypal.com/IntegrationCenter/ic_ipn-pdt-variable-reference.html)
txn_type=web_accept
payment_date=19%3A09%3A25+Apr+15%2C+2008+PDT
last_name=Tester
residence_country=US
item_name=templates
payment_gross=70.00
mc_currency=USD
business=abc%40def.ghi (email of business owner)
payment_type=instant
payer_status=verified
verify_sign=AFhW6IfTc.P96fDJUr48Gahf6BlHAhxUUkTH59p-rGnYUe2n5es5ZeLn
test_ipn=1
payer_email=testpayer%40abc.def.ghi (person paying)
tax=0.00
txn_id=40863971JS8149811
first_name=Chester
receiver_email=aaa%40bbb.com
quantity=1
payer_id=QW5PPSM3TFGPA
receiver_id=LZZDEWP3XWLUG
item_number=39
payment_status=Completed
mc_fee=3.03
payment_fee=3.03
shipping=0.00
mc_gross=70.00
custom=39
*/
?>