<?php

class Orange35_Local_Model_Observer extends Mage_Core_Model_Abstract
{
    protected $_attributeCodes = array("ring_size", "bracelet_size", "chain_size");
    protected $_oldValues;
    protected $_newValues;

    public function st(){
        echo 1; exit;
    }
    public function addCustomOptions($observer)
    {
        /** @var $product Mage_Catalog_Model_Product */
        $product = $observer->getProduct();
        $this->_setChangedValues($product);
        foreach ($this->_attributeCodes as $attributeCode) {
            $attributeValues = $product->getData($attributeCode);
            if ($attributeValues != null) {
                $attribute = $product->getResource()->getAttribute($attributeCode);
                $options = $attribute->getSource()->getAllOptions(false);
                $customOptionData = $this->prepareOptionData($options, $attributeValues, $product->getSku());
                if ($customOptionData != null) {
                    $oldOptions = $product->getOptionInstance()->getOptions();
                    if ($this->_checkIsChanged($attributeCode) || sizeof($product->getOptions())==0) {
                        foreach ($oldOptions as $key => $option) {
                            if (strtolower($option['title']) == strtolower('Size') && $option['type'] == 'drop_down') {
                                $oldOptions[$key]['is_delete'] = 1;
                                $product->getOptionInstance()->addOption($oldOptions[$key]);
                            }
                        }
                        $product->setCanSaveCustomOptions(true);
                        $product->getOptionInstance()->addOption($customOptionData);
                        $product->setHasOptions(true);
                    }
                }
            }
        }

        return $this;
    }

    public function addCustomOptions2Duplicate($observer)
    {
//        array('current_product' => $this, 'new_product' => $newProduct);
        /** @var $product Mage_Catalog_Model_Product */
        $product = $observer->getCurrentProduct();
        /** @var $newProduct Mage_Catalog_Model_Product */
        $newProduct = $observer->getNewProduct();
        foreach ($this->_attributeCodes as $attributeCode) {
            $attributeValues = $product->getData($attributeCode);
            if ($attributeValues != null) {
                $attribute = $product->getResource()->getAttribute($attributeCode);
                $options = $attribute->getSource()->getAllOptions(false);
                $customOptionData = $this->prepareOptionData($options, $attributeValues, $product->getSku());
                $oldOptions = $product->getOptionInstance()->getOptions();
                if ($this->_checkIsChanged($attributeCode) || sizeof($product->getOptions())==0) {
                    foreach ($oldOptions as $key => $option) {
                        if (strtolower($option['title']) == strtolower('Size') && $option['type'] == 'drop_down') {
                            $oldOptions[$key]['is_delete'] = 1;
                            $product->getOptionInstance()->addOption($oldOptions[$key]);
                        }
                    }
                    $newProduct->setCanSaveCustomOptions(true);
                    $newProduct->getOptionInstance()->addOption($customOptionData);
                    $newProduct->setHasOptions(true);
                }
            }
        }

        return $this;
    }

    protected function _setChangedValues($product)
    {
        $this->_newValues = array_diff_assoc($product->getData(), $product->getOrigData());
        $this->_oldValues = array_diff_assoc($product->getOrigData(), $product->getData());

        return $this;
    }

    protected function _checkIsChanged($key)
    {
        $result = false;
        if (isset ($this->_newValues[$key]) && isset($this->_oldValues[$key])) {
            $result = sizeof(array_diff_assoc($this->_newValues[$key], explode(',', $this->_oldValues[$key]))) != 0 ? true : false;
        }

        return $result;
    }

    protected function prepareOptionData($optionsData, $attributeValues, $sku)
    {
        $selectedValues = array();
        foreach ($optionsData as $key => $value) {
            if (in_array($value['value'], array_values($attributeValues))) {
                $selectedValues[] = $optionsData[$key];
            }
        }
        if (count($selectedValues) > 0) {
            $options = array();
            for ($i = 0; $i < count($selectedValues); $i++) {
                $options[$i] =
                    array('is_delete'  => '',
                          'title'      => $selectedValues[$i]['label'],
                          'price_type' => 'fixed',
                          'price'      => '',
                          'sort_order' => $i,
                          'sku'        => $sku . '-' . $selectedValues[$i]['value'],
                    );
            }

            $optionData = array(
                'is_delete'      => 0,
                'is_require'     => true,
                'previous_group' => '',
                'title'          => 'Size',
                'type'           => 'drop_down',
                'sort_order'     => 1,
                'values'         => $options,
            );

            return $optionData;
        }

        return null;
    }
}