Latheesan - magento order creator

<?php

// Init magento base class
require_once 'app/Mage.php';
Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);

// Dummy data source
$settings   = array
(
    'WebsiteId' => 2,
    'StoreId' => 4,
    'ShippingMethod' => 'icw_shipping',
    'PaymentMethod' => 'icw_payment'
);
$jsonOrderData = '{"DiscountAmount":0, "DiscountReason":"", "STPointsUsed": 0,
"STPointsEarned": 0,"CustomerId":17557,"SendConfirmation":true,"BasketData":
[{"ProductId":18844,"Price":8.88,"Qty":1}],"ShippingMethod":"Flat Rate",
"DeliveryDate":"21/01/2016","SalesRep":"latheesan","PaymentMethod":"PayPal Here",
"PPHPaymentType":"CreditCard","PPHInvoiceId":"INV2-AHWG-SQHP-QMLT-1234",
"PPHTxId":"111-22-3333","ShippingAmount":15}';

//
// Test
//
echo '<pre>';
try
{
    // Init
    $orderCreator = new Ordercreator(
        $settings,
        $jsonOrderData
    );

    // Create order
    print_r($orderCreator->create());

    // Clean-up
    $orderCreator = null;
}
catch (Exception $ex)
{
    echo 'Failed to create order: '. $ex->getMessage()
        .' @ '.
        basename($ex->getFile()) .':'. $ex->getLine();
}
echo '</pre>';
//
// Test
//

/**
 * Helper class
 */
class Ordercreator
{
    // Class properties
    private $_settings        = array();
    private $_orderData       = array();
    private $_customer        = null;
    private $_quote           = null;
    private $_salesOrder      = null;

    // Class constructor
    function __construct(array $settings, string $jsonOrderData)
    {
        Mage::register('isSecureArea', true);
        $this->_settings = $settings;
        $this->_orderData = $jsonOrderData;
    }

    // Class Destructor
    function __destruct()
    {
        // Clean-up
        $this->_settings   = null;
        $this->_orderData  = null;
        $this->_customer   = null;
        $this->_quote      = null;
        $this->_salesOrder = null;
    }

    // Main method to initialise the order creation process
    function create()
    {
        // Parepare new sales order quote
        $this->parseSalesOrderData(
            $this->_orderData
        );
        $this->loadSalesOrderCustomer();
        $this->initSalesOrderQuote();
        $this->addOrderLinesToQuote();
        $this->saveSalesOrderQuote();

        // Convert quote to new sales order
        $this->convertQuoteToOrder();
        $this->updateSalesOrderAttributes();

        // Finished
        return $this->_salesOrder->getIncrementId();
    }

    // Method to parse sales order data
    private function parseSalesOrderData($jsonOrderData)
    {
        // Parse & validate order data object
        $this->_orderData = @json_decode(
            $jsonOrderData
        );
        if (!$this->_orderData)
            throw new Exception('Invalid order data');
    }

    // Method to load order customer
    private function loadSalesOrderCustomer()
    {
        $this->_customer = Mage::getModel('customer/customer');
        $this->_customer->setWebsiteId(
            $this->_settings['WebsiteId']
        );
        $this->_customer->load(
            $this->_orderData->CustomerId
        );
        if (!$this->_customer->getId())
            throw new Exception(
                'Invalid customer id '. $this->_orderData->CustomerId
            );
    }

    // Method to initialise a new sales order quote
    private function initSalesOrderQuote()
    {
        // Validate customer's default address data
        if (!$this->_customer->getPrimaryBillingAddress())
            throw new Exception('Default customer billing address missing');
        if (!$this->_customer->getPrimaryShippingAddress())
            throw new Exception('Default customer shipping address missing');

        // Create a new quote
        $this->_quote = Mage::getModel('sales/quote');
        $this->_quote->assignCustomer(
            $this->_customer
        );
        $this->_quote->setStore(
            $this->_quote->getStore()->load(
                $this->_settings['StoreId']
            )
        );
    }

    // Method to add order lines to sales order quote
    private function addOrderLinesToQuote()
    {
        // Validate basket data
        if (!sizeof($this->_orderData->BasketData))
            throw new Exception('Basket data is empty');

        // Add basket data to sales order quote
        $product = Mage::getModel('catalog/product');
        foreach ($this->_orderData->BasketData as $orderLine)
        {
            // Load product
            $quoteProduct = $product->load(
                $orderLine->ProductId
            );
            if (!$quoteProduct || !$quoteProduct->getId())
                throw new Exception(
                    'Product #'. $orderLine->ProductId .' does not exists'
                );

            // Add sales order quote item
            $quoteItem = Mage::getModel('sales/quote_item')->setProduct(
                $quoteProduct
            );
            $quoteItem->setQuote(
                $this->_quote
            );
            $quoteItem->setQty(
                $orderLine->Qty
            );
            $quoteItem->setPrice(
                $orderLine->Price
            );
            $this->_quote->addItem(
                $quoteItem
            );

            // Clean-up
            $quoteProduct = null;
            $quoteItem    = null;
        }

        // Clean-up
        $product = null;
    }

    // Method to save sales order quote
    private function saveSalesOrderQuote()
    {
        Mage::register($this->_settings['ShippingMethod'], array(
            'shippingCarrier' => 'Custom',
            'shippingTitle'   => $this->_orderData->ShippingMethod,
            'shippingPrice'   => $this->_orderData->ShippingAmount
        ));
        $this->_quote->getShippingAddress()->setShippingMethod(
            $this->_settings['ShippingMethod']
        );
        $this->_quote->getShippingAddress()->setCollectShippingRates(
            true
        );
        $this->_quote->getShippingAddress()->collectShippingRates();
        $this->_quote->collectTotals();
        $this->_quote->reserveOrderId();
        $this->_quote->save();
    }

    // Method to convert quote into real order & return order data
    private function convertQuoteToOrder()
    {
        // Set payment method
        $quotePaymentObj = $this->_quote->getPayment();
        $quotePaymentObj->setMethod(
            $this->_settings['PaymentMethod']
        );
        $quotePaymentObj->setAdditionalData(
            'Custom - '. $this->_orderData->PaymentMethod
        );
        $this->_quote->setPayment(
            $quotePaymentObj
        );

        // Convert quote to order
        $convertQuoteObj = Mage::getSingleton('sales/convert_quote');
        $this->_salesOrder = $convertQuoteObj->addressToOrder(
            $this->_quote->getShippingAddress()
        );
        $orderPaymentObj = $convertQuoteObj->paymentToOrderPayment(
            $quotePaymentObj
        );
        $this->_salesOrder->setBillingAddress(
            $convertQuoteObj->addressToOrderAddress(
                $this->_quote->getBillingAddress()
            )
        );

        // Set shipping info
        $this->_salesOrder
            ->setShippingAddress(
                $convertQuoteObj->addressToOrderAddress(
                    $this->_quote->getShippingAddress()
                )
            );

        // Set payment info
        $this->_salesOrder->setPayment(
            $convertQuoteObj->paymentToOrderPayment(
                $this->_quote->getPayment()
            )
        );

        // Add items from quote or order
        foreach ($this->_quote->getAllItems() as $item) {
            $orderItem = $convertQuoteObj->itemToOrderItem(
                $item
            );
            if ($item->getParentItem()) {
                $orderItem->setParentItem(
                    $this->_salesOrder->getItemByQuoteItemId(
                        $item->getParentItem()->getId()
                    )
                );
            }
            $this->_salesOrder->addItem(
                $orderItem
            );
            $orderItem = null;
        }
        $this->_salesOrder->setCanShipPartiallyItem(
            true
        );

        // Save order
        $this->_salesOrder->place();
        $this->_salesOrder->save();

        // Clean-up
        $quotePaymentObj = null;
        $convertQuoteObj = null;
    }

    // Method to update sales order attributes
    private function updateSalesOrderAttributes()
    {
        $this->_salesOrder
            ->setSalesRep($this->_orderData->SalesRep)
            ->setDeliveryDate($this->_orderData->DeliveryDate)
            ->setPphPaymentType($this->_orderData->PPHPaymentType)
            ->setPphInvoiceId($this->_orderData->PPHInvoiceId)
            ->setPphTxId($this->_orderData->PPHTxId)
            ->save();
    }
}