Update MinPrice

Readme.txt

I created a new attribute called min_price (price field), hash_code (text) 
added the attribute set to prices.

The following code "should" update the minPrice attribute in Magento.

Single Product update seems to work to generate a new min_price.  hash 

Everything seems to be working

Suggestions are welcome.

config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- html/app/code/local/Overnight/Pricer/etc/config.xml -->
<config>
   <modules>
      <Overnight_Pricer>
         <version>0.1.1</version>
      </Overnight_Pricer>
   </modules>
   <global>
      <models>
         <overnight_pricer>
            <class>Overnight_Pricer_Model</class>
         </overnight_pricer>
      </models>
   </global>
   <adminhtml>
      <events>
         <catalog_product_save_before>
            <observers>
               <overnight_pricer>
                  <class>overnight_pricer/observer</class>
                  <method>catalogUpdateMinPrice</method>
               </overnight_pricer>
            </observers>
         </catalog_product_save_before>
         <catalog_product_attribute_update_before>
            <observers>
               <overnight_pricer>
                  <class>overnight_pricer/observer</class>
                  <method>catalogUpdateMinPriceMassaction</method>
               </overnight_pricer>
            </observers>
         </catalog_product_attribute_update_before>
      </events>
   </adminhtml>
   <!-- -->
   <crontab>
      <jobs>
         <overnight_pricer>
            <schedule>
               <cron_expr>*/10 * * * *</cron_expr>
            </schedule>
            <run>
               <model>overnight_pricer/observer::updateCost</model>
            </run>
         </overnight_pricer>
      </jobs>
   </crontab>
   <!-- -->
</config>

Observer.php

<?php class Overnight_Pricer_Model_Observer
//html/app/code/local/Overnight/Pricer/Model/Observer.php
{
	protected $additionalValue = 1.50;
	protected $multiplicationValue = 0.84;  // 16% fees
	public $echoout = false;

	/**
	 * Handle catalog_product_save_before event
	 *
	 * @param Varien_Event_Observer $observer
	 * @return void
	 */
	private function output($out){
		echo $out. PHP_EOL;
	}
	public function catalogUpdateMinPrice(Varien_Event_Observer $observer)
	{
		/** @var $product Mage_Catalog_Model_Product */
		$product = $observer->getEvent()->getDataObject();

		$cost = $product->getCost();
		$minPrice = $product->getMinPrice();
		$hashcode = $product->getHashCode();


		$newMinPrice = null;

		if($cost != ""){
			$newMinPrice = round(($cost+$this->additionalValue)/$this->multiplicationValue,2);
		}

		$hash = md5($cost . $newMinPrice);
		if (($hashcode != $hash) || ($minPrice == "")) {
			$product->setMinPrice($newMinPrice);
			$product->setHashCode($hash);
			Mage::log("catalogUpdateMinPrice ".$newMinPrice." MinPrice - {$cost} Cost",null,'updatedprice.log');
		} else
		{
			Mage::log("catalogUpdateMinPrice No Update Needed",null,'updatedprice.log');

		}
	}


	/**
	 * Handle catalog_product_attribute_update_before event
	 *
	 * @param Varien_Event_Observer $observer
	 */
	public function catalogUpdateMinPriceMassaction(Varien_Event_Observer $observer)
	{
		/** @var $block Mage_Adminhtml_Block_Catalog_Product_Edit_Action_Attribute_Tab_Attributes */
		$attributesData = $observer->getEvent()->getAttributesData();

		$cost = $attributesData['cost'];

		if($cost != ""){
			//$newMinPrice = ($cost+$this->additionalValue)/$this->multiplicationValue;
			$newMinPrice = round(($cost+$this->additionalValue)/$this->multiplicationValue,2);
			$hash = md5($cost . $newMinPrice);

			$attributesData['min_price'] = $newMinPrice;
			$attributesData['hash_code'] = $hash;
			$observer->getEvent()->setAttributesData($attributesData);
		}
		Mage::log("catalogUpdateMinPriceMassaction ".$newMinPrice." MinPrice - {$cost} Cost",null,'updatedprice.log');

	}

	public function postlog($stringData){
		/*
		try {
			$myFile = "/usr/share/nginx/html/app/code/local/Overnight/Pricer/cronlog.txt";
			$fh = fopen($myFile, 'a+');
			$stringData = date('l jS \of F Y h:i:s A'). ' '.$stringData ."\n";
			fwrite($fh, $stringData);
			fclose($fh);
		} catch (Exception $e) {
			Mage::printException($e);
		}
		*/
	}

	public function updateCost() {
		/**
		 * suppose you have hash_code attribute for catalog products which is store
		 * hash code of synchronizeable attribute values.
		 */
		// Need to add force for manual update
		// Mage:log doesn't seem to work inside cron??
		Mage::log("cron Started.....",null,'updatedprice.log');
		$this->postlog("cron Started.....");

		$productCollection = Mage::getModel('catalog/product')->getCollection()
		->addAttributeToSelect('min_price')
		->addAttributeToSelect('cost')
		->addAttributeToSelect('hash_code')
		->addAttributeToSelect('min_price');
		$counter = 0;
		foreach ($productCollection as $product) {
			$counter++;
			$cost = $product->getCost();
			$minPrice = $product->getMinPrice();
			$sku = $product->getSku();

			$hash = md5($cost . $minPrice);
			$hashcode = $product->getHashCode();
			$this->output('Counter: '. $counter);

			if (($hashcode != $hash) || ($minPrice == "")) {
				$this->output('Sku: '.$sku);
				$this->output('Cost: '.$cost);
				$this->output('Min Price: '.$minPrice);
				$this->output('Hash     : '.$hash);
				$this->output('Hash Code: '.$hashcode);
				$this->output('Hash Being Set ******');

				$newMinPrice = null;

				if($cost != ""){
					$newMinPrice = round(($cost+$this->additionalValue)/$this->multiplicationValue,2);
				}

				Mage::log("Updating Product {$sku} ".$newMinPrice." MinPrice - {$cost} Cost",null,'updatedprice.log');
				$this->postlog("Updating Product {$sku} ".$newMinPrice." MinPrice - {$cost} Cost");
				$product->setData('hash_code', $hash)->getResource()->saveAttribute($product, 'hash_code');
				$product->setData('min_price', $newMinPrice)->getResource()->saveAttribute($product, 'min_price');
				// break;
				$minPrice = $product->getMinPrice();
				$hashcode = $product->getHashCode();
				$this->output('New Min Price: '.$minPrice);
				$this->output('New Hash Code: '.$hashcode);



			}
			usleep(2000);//0.002 seconds
		} 
		$this->postlog("cron Complete.....");
	}

	public function updateQuantityInPackage() {
		/**
		 * Fix to add Quantity In Package Field with Default Value since Magneto didn't set it
		 */
		$this->postlog("Started.....");
		$productCollection = Mage::getModel('catalog/product')->getCollection()
		->addAttributeToSelect('quantityinpackage');
		$counter = 0;
		foreach ($productCollection as $product) {
			//print_r($product);
			$counter++;
			$this->output('Counter: '. $counter);

			//$q = $product->getQunantityinpackage();
			$q = $product->getData('quantityinpackage');
			$this->output('Current Quantity: '.$q);
			if ($q == '') {
				$product->setData('quantityinpackage', '1')->getResource()->saveAttribute($product, 'quantityinpackage'); 
				// Update products that have no value only.
				usleep(2000);//0.002 seconds
				$q = $product->getData('quantityinpackage');
				$this->output('New Quantity: '.$q);
			}
		}
		
		$this->postlog("Complete.....");
	}
}

Overnight_Pricer.xml

<?xml version="1.0"?>
<!-- html/app/etc/modules/Overnight_Pricer.xml -->
<config>
	<modules>
        <Overnight_Pricer>
            <active>true</active>
            <codePool>local</codePool>
        </Overnight_Pricer>
  	</modules>
</config>

tester.php

<?php
// Put in html/app/code/local/Overnight/Pricer/tester.php
ignore_user_abort(true);//if caller closes the connection (if initiating with cURL from another PHP, this allows you to end the calling PHP script without ending this one)
set_time_limit(0);
ini_set('mysql.connect_timeout', 3600);
ini_set('default_socket_timeout', 3600);
//echo ini_get("memory_limit")."\n";
ini_set("memory_limit","768M");
//echo ini_get("memory_limit")."\n";

require_once '../../../../Mage.php';
 
Varien_Profiler::enable();
Mage::setIsDeveloperMode(true);
ini_set('display_errors', 1);
 
umask(0);
Mage::app("default");
Mage::app ()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);
 
$obj = Mage::getModel('overnight_pricer/observer');
$obj->echoout=true;
$obj->updateCost();