bebeboutik/modules/product_vouchers/product_vouchers.php

<?php
if (!defined('_PS_VERSION_'))
	exit;

require_once(_PS_ROOT_DIR_.'/modules/product_vouchers/productvouchers.php');

class Product_Vouchers extends Module {
 	
 	public function __construct() {
 		$this->name = 'product_vouchers';
 		$this->tab = 'administration';
		$this->need_instance = 0;

		parent::__construct();

		$this->displayName = $this->l('Product Vouchers');
		$this->description = $this->l('Associate vouchers to product.');

		$this->version = '1.0';
		$this->author = 'Antadis';
 	}

 	public function install() {
 	 	$query = '
			CREATE TABLE IF NOT EXISTS `'._DB_PREFIX_.'product_voucher` (
			  `id_product_voucher` int(11) NOT NULL AUTO_INCREMENT,
			  `name` varchar(255) NOT NULL,
			  `product_id` int(11) NOT NULL,
			  `date_add` datetime NOT NULL,
			  `active` tinyint(4) NOT NULL,
			  `max_vouchers` tinyint(4) NOT NULL,
			  PRIMARY KEY (`id_product_voucher`),
			  INDEX (`product_id`)
			) ENGINE=InnoDB DEFAULT CHARSET=utf8
		';
	 	if(!Db::getInstance()->Execute($query)) {
	 		return false;
		}

		$query = '
			CREATE TABLE IF NOT EXISTS `'._DB_PREFIX_.'product_voucher_lang` (
			  `id_product_voucher` int(11) NOT NULL,
			  `objet` varchar(255) NOT NULL,
			  `mail` TEXT NOT NULL,
			  `id_lang` tinyint(4) NOT NULL,
			  PRIMARY KEY (`id_product_voucher`, `id_lang`)
			) ENGINE=InnoDB DEFAULT CHARSET=utf8
		';
	 	if(!Db::getInstance()->Execute($query)) {
	 		return false;
		}

		$query_item = '
			CREATE TABLE IF NOT EXISTS `'._DB_PREFIX_.'product_voucher_item` (
			  `id_product_voucher_item` int(11) NOT NULL AUTO_INCREMENT,
			  `id_product_voucher` int(11) NOT NULL,
			  `code` varchar(255) NOT NULL,
			  `id_order` int(11) NOT NULL,
			  `statut` tinyint(4) NOT NULL,
			  PRIMARY KEY (`id_product_voucher_item`),
			  INDEX (`id_product_voucher`),
			  INDEX (`id_order`)
			) ENGINE=InnoDB DEFAULT CHARSET=utf8';

	 	if(!Db::getInstance()->Execute($query_item)) {
	 		return false;
		}
		
		if (parent::install() == false 
				OR !$this->registerHook('adminOrder') 
				OR !$this->registerHook('orderDetailDisplayed') 
				OR !$this->registerHook('postUpdateOrderStatus') 
				OR !$this->registerHook('cancelProduct') )
 	 		return false;

		return true;
  	}
  	
 	public function hookpostUpdateOrderStatus($params) {
		$id_order = $params['id_order'];
		
		if($params['newOrderStatus']->id == 2) {
			$vouchers_available = ProductVouchers::getProductEligibleForOrder($id_order);
			if(count($vouchers_available) > 0) {
				$vouchers = ProductVouchers::getVouchersCodeByOrder($id_order);
				if(count($vouchers) == 0) {
					foreach($vouchers_available as $voucher) {
						ProductVouchers::associateCodeToOrder($voucher['id_product_voucher'], $voucher['product_quantity'], $id_order);
					}
				}
			}
		} elseif ($params['newOrderStatus']->id == 6 
			|| $params['newOrderStatus']->id == 7) {
			ProductVouchers::refundOrder($id_order);
		}
 	}
 	
 	public function hookcancelProduct($params) {
		$refunds = ProductVouchers::getQuantityRefundbyProduct($params['order']->id);
		if(!empty($refunds)) {
			foreach($refunds as $key => $refund) {
				$diff = $refund['product_quantity_refunded'] - $refund['product_quantity'];

				if($diff == $refund['product_quantity']) {
					continue;
				} else if($diff == 0) {
					ProductVouchers::refundCode($refund['product_id'], $params['order']->id, $refund['product_quantity']);
				} else {
					ProductVouchers::refundCode($refund['product_id'], $params['order']->id, $refund['product_quantity_refunded']);
				}
			}
		}
	}

 	public function hookadminOrder($params) {
 		global $cookie;
		$vouchers = ProductVouchers::getVouchersCodeByOrder($params['id_order']);

		if(!empty($vouchers)) {
			echo '<br /> <fieldset style="width: 400px">
				<legend>'. $this->l('Product Vouchers') .'</legend>';
			foreach ($vouchers as $voucher) {
				$product = new Product($voucher['product_id'], false, $cookie->id_lang);
				echo '<u>' . $product->name . '</u>';
				echo '<p><b>Code</b> : '. $voucher['code'] . '
				 <br /> <b>Statut</b> :' . $this->getState($voucher['statut']);
				echo '</p><hr>';
			}
			echo '</fieldset>';
		}
 	}

 	public function hookorderDetailDisplayed($params) {
		global $cookie, $smarty;
		$vouchers = ProductVouchers::getVouchersCodeByOrder($params['order']->id);

		if(!empty($vouchers)) {
			foreach ($vouchers as $key => $voucher) {
				$product = new Product($voucher['product_id'], false, $cookie->id_lang);
				$vouchers[$key]['product'] = $product;
				$vouchers[$key]['state'] = $this->getState($voucher['statut']);
			}
			$smarty->assign('vouchers', $vouchers);
			return $this->display(__FILE__, 'order_details.tpl');
		}
 	}

	public function getState($statut) {
		if($statut == ProductVouchers::AVAILABLE) {
			return $this->l('Available');
		} else if($statut == ProductVouchers::ACTIVE) {
			return $this->l('Active');
		} else if($statut == ProductVouchers::REFUND) {
			return $this->l('Refund');
		} else if($statut == ProductVouchers::INACTIVE) {
			return $this->l('Inactive');
		}
	}


}