<?php
set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/amazon/');
require_once AMZFULFILLMENT_PLUGIN_DIR . '/FBAInventoryServiceMWS/Client.php';
require_once AMZFULFILLMENT_PLUGIN_DIR . '/FBAOutboundServiceMWS/Client.php';
require_once AMZFULFILLMENT_PLUGIN_DIR . '/FBAOutboundServiceMWS/Model/ListAllFulfillmentOrdersRequest.php';
require_once AMZFULFILLMENT_PLUGIN_DIR . '/FBAOutboundServiceMWS/Model/ListAllFulfillmentOrdersResponse.php';
require_once AMZFULFILLMENT_PLUGIN_DIR . '/FBAOutboundServiceMWS/Model/ListAllFulfillmentOrdersResult.php';
require_once AMZFULFILLMENT_PLUGIN_DIR . '/FBAOutboundServiceMWS/Model/ListAllFulfillmentOrdersByNextTokenRequest.php';
require_once AMZFULFILLMENT_PLUGIN_DIR . '/FBAOutboundServiceMWS/Model/ListAllFulfillmentOrdersByNextTokenResponse.php';
require_once AMZFULFILLMENT_PLUGIN_DIR . '/FBAOutboundServiceMWS/Model/ListAllFulfillmentOrdersByNextTokenResult.php';

/**
 * Amazing Fullfilment Integration for WooCommerce - amazon class
 *
 * @author dejo-commerce
 * @copyright Copyright (c) 2017 dejo-commerce (https://www.dejo-commerce.com)
 * @license http://www.gnu.org/licenses/gpl-2.0.html
 */
class AmzFulfillment_Amazon {
	const FULFILLMENT_INVENTORY_API = '/FulfillmentInventory/2010-10-01';
	const FULFILLMENT_OUTBOUND_SHIPMENT_API = '/FulfillmentOutboundShipment/2010-10-01';
	private $options;
	private $appName;
	private $appVersion;
	private $orderPrefix;
	private $inventoryClient = null;
	private $outboundClient = null;

	/**
	 * Constructor
	 */
	public function __construct() {
		$this->options = new AmzFulfillment_Options();
		$this->appName = 'woocommerce ' . $_SERVER['SERVER_NAME'];
		$this->appVersion = AmzFulfillment_Core::getPluginVersion();
		$this->appName = sprintf('%s on %s', AMZFULFILLMENT_PLUGIN_ID, preg_replace("/^https?:\/\//", '', site_url()));
		$this->orderPrefix = preg_replace("/^https?:\/\//", '', site_url()) . ':';
		if (function_exists('iconv') && PHP_VERSION_ID < 50600) {
			iconv_set_encoding("internal_encoding", "UTF-8");
			iconv_set_encoding("input_encoding", "UTF-8");
			iconv_set_encoding("output_encoding", "UTF-8");
		} elseif (PHP_VERSION_ID >= 50600) {
			ini_set("default_charset", "UTF-8");
		}
	}

	/**
	 * createFulfillmentOrder
	 *
	 * @param string $orderId
	 * @param FBAOutboundServiceMWS_Model_Address $address
	 * @param FBAOutboundServiceMWS_Model_CreateFulfillmentOrderItemList $itemsList
	 * @param string $notes
	 * @return FBAOutboundServiceMWS_Model_CreateFulfillmentOrderResponse
	 */
	public function createFulfillmentOrder($orderId, $address, $itemsList, $notes = '') {
		$this->options->load();
		if(!$this->options->hasAmazonCredentials()) {
			throw new Exception(sprintf('Amazon % failed: No mws api credentials configured', __FUNCTION__));
		}
		$request = new FBAOutboundServiceMWS_Model_CreateFulfillmentOrderRequest();
		$request->setSellerId($this->options->getMerchantId());
		$request->setShippingSpeedCategory("Standard");
		$request->setDestinationAddress($address);
		$request->setItems($itemsList);
		$request->setSellerFulfillmentOrderId($this->orderPrefix . $orderId);
		$request->setDisplayableOrderId($this->orderPrefix . $orderId);
		$request->setDisplayableOrderDateTime(date("c", strtotime("now")));
		$request->setDisplayableOrderComment("Order Notes " . $notes);
		if ($this->options->getHold()) {
			$request->setFulfillmentAction("Hold");
		} else {
			$request->setFulfillmentAction("Ship");
		}
		$request->setFulfillmentPolicy('FillOrKill');
		return $this->getOutboundClient()->CreateFulfillmentOrder($request);
	}

	/**
	 * cancelFulfillmentOrder
	 *
	 * @param string $orderId
	 * @return FBAOutboundServiceMWS_Model_CancelFulfillmentOrderResponse
	 */
	public function cancelFulfillmentOrder($orderId) {
		$this->options->load();
		if(!$this->options->hasAmazonCredentials()) {
			throw new Exception(sprintf('Amazon % failed: No mws api credentials configured', __FUNCTION__));
		}
		$request = new FBAOutboundServiceMWS_Model_CancelFulfillmentOrderRequest();
		$request->setSellerId($this->options->getMerchantId());
		$request->setSellerFulfillmentOrderId($this->orderPrefix . $orderId);
		return $this->getOutboundClient()->CancelFulfillmentOrder($request);
	}

	/**
	 * getAllFulfillmentOrders
	 * 
	 * @param string $date
	 * @throws Exception
	 * @return FBAOutboundServiceMWS_Model_FulfillmentOrder[]
	 */
	public function getAllFulfillmentOrders($date = NULL) {
		$this->options->load();
		if(!$this->options->hasAmazonCredentials()) {
			throw new Exception(sprintf('Amazon % failed: No mws api credentials configured', __FUNCTION__));
		}
		$orders = array();
		$response = $this->listAllFulfillmentOrders($date);
		foreach($response->getListAllFulfillmentOrdersResult()->getFulfillmentOrders()->getmember() as $order) {
			$orders[] = $order;
		}
		while($response->getListAllFulfillmentOrdersResult()->isSetNextToken()) {
			$nextToken = $response->getListAllFulfillmentOrdersResult()->getNextToken();
			$response = $this->listAllFulfillmentOrdersByNextToken($nextToken);
			foreach($response->getListAllFulfillmentOrdersByNextTokenResult()->getFulfillmentOrders()->getmember() as $order) {
				$orders[] = $order;
			}
		}
		return $orders;
	}

	/**
	 * listAllFulfillmentOrders
	 * 
	 * @param string $date
	 * @return FBAOutboundServiceMWS_Model_ListAllFulfillmentOrdersResponse
	 */
	private function listAllFulfillmentOrders($date = NULL) {
		$request = new FBAOutboundServiceMWS_Model_ListAllFulfillmentOrdersRequest();
		$request->setMarketplace($this->options->getMarketplace()->getMarketplaceId());
		$request->setSellerId($this->options->getMerchantId());
		if($date !== NULL) {
			$request->setQueryStartDateTime($date);
		}
		return $this->getOutboundClient()->listAllFulfillmentOrders($request);
	}

	/**
	 * listAllFulfillmentOrdersByNextToken
	 * 
	 * @param string $nextToken
	 * @return FBAOutboundServiceMWS_Model_ListAllFulfillmentOrdersByNextTokenResponse
	 */
	private function listAllFulfillmentOrdersByNextToken($nextToken) {
		$request = new FBAOutboundServiceMWS_Model_ListAllFulfillmentOrdersByNextTokenRequest();
		$request->setMarketplace($this->options->getMarketplace()->getMarketplaceId());
		$request->setSellerId($this->options->getMerchantId());
		$request->setNextToken($nextToken);
		return $this->getOutboundClient()->listAllFulfillmentOrdersByNextToken($request);
	}

	/**
	 * getAllInventoryItems
	 * 
	 * @param array $sellerSkus
	 * @return array
	 */
	public function getAllInventoryItems($sellerSkus) {
		$this->options->load();
		if(!$this->options->hasAmazonCredentials()) {
			throw new Exception(sprintf('Amazon % failed: No mws api credentials configured', __FUNCTION__));
		}
		$items = array();
		$response = $this->listInventorySupply($sellerSkus);
		foreach($response->getListInventorySupplyResult()->getInventorySupplyList()->getmember() as $supplyItem) {
			$items[] = $supplyItem;
		}
		while($response->getListInventorySupplyResult()->isSetNextToken()) {
			$nextToken = $response->getListInventorySupplyResult()->getNextToken();
			$response = $this->listInventorySupplyByNextToken($nextToken);
			foreach($response->getListInventorySupplyByNextTokenResult()->getInventorySupplyList()->getmember() as $supplyItem) {
				$items[] = $supplyItem;
			}
		}
		return $items;
	}

	/**
	 * listInventorySupply
	 * 
	 * @param array $sellerSkus
	 * @return FBAInventoryServiceMWS_Model_ListInventorySupplyResponse
	 */
	private function listInventorySupply($sellerSkus) {
		$request = new FBAInventoryServiceMWS_Model_ListInventorySupplyRequest();
		$request->setMarketplace($this->options->getMarketplace()->getMarketplaceId());
		$request->setSellerId($this->options->getMerchantId());
		$skuList = new FBAInventoryServiceMWS_Model_SellerSkuList();
		$skuList->setmember($sellerSkus);
		$request->setSellerSkus($skuList);
		return $this->getInventoryClient()->ListInventorySupply($request);
	}

	/**
	 * listInventorySupplyByNextToken
	 * 
	 * @param string $nextToken
	 * @return FBAInventoryServiceMWS_Model_ListInventorySupplyByNextTokenResponse
	 */
	private function listInventorySupplyByNextToken($nextToken) {
		$request = new FBAInventoryServiceMWS_Model_ListInventorySupplyByNextTokenRequest();
		$request->setMarketplace($this->options->getMarketplace()->getMarketplaceId());
		$request->setSellerId($this->options->getMerchantId());
		$request->setNextToken($nextToken);
		return $this->getInventoryClient()->ListInventorySupplyByNextToken($request);
	}

	/**
	 * getPackageTrackingDetails
	 *
	 * @param int $packageNumber
	 * @return FBAOutboundServiceMWS_Model_GetPackageTrackingDetailsResponse
	 */
	public function getPackageTrackingDetails($packageNumber) {
		$this->options->load();
		if(!$this->options->hasAmazonCredentials()) {
			throw new Exception(sprintf('Amazon % failed: No mws api credentials configured', __FUNCTION__));
		}
		$request = new FBAOutboundServiceMWS_Model_GetPackageTrackingDetailsRequest();
		$request->setSellerId($this->options->getMerchantId());
		$request->setPackageNumber($packageNumber);
		return $this->getOutboundClient()->getPackageTrackingDetails($request);
	}

	/**
	 * getDate
	 * 
	 * Get date in format 2016-02-11T00:00:00-06:00 for amazon api
	 * 
	 * @param string|int $time
	 * @throws InvalidArgumentException
	 * @return string
	 */
	public function getDate($time) {
		if(is_string($time)) {
			$date = $time;
			$time = strtotime($date);
			if($time <= 0) {
				throw new InvalidArgumentException('Invalid time: ' . $date);
			}
		}
		if(!is_integer($time)) {
			throw new InvalidArgumentException('Invalid time: ' . $time);
		}
		return date('Y-m-d', $time) . 'T' . date('H:i:sP', $time);
	}

	/**
	 * getOrderIdWithoutPrefix
	 * 
	 * @param string $orderId
	 * @return string
	 */
	public function getOrderIdWithoutPrefix($orderId) {
		if(stripos($orderId, $this->orderPrefix) === false) {
			return NULL;
		} else {
			return str_replace($this->orderPrefix, '', $orderId);
		}
	}

	/**
	 * getInventoryClient
	 *
	 * @throws Exception
	 * @return FBAInventoryServiceMWS_Client
	 */
	private function getInventoryClient() {
		if($this->inventoryClient == null) {
			$this->options->load();
			if(!$this->options->hasAmazonCredentials()) {
				throw new Exception('No amazon MWS credentials');
			}
			$this->inventoryClient= new FBAInventoryServiceMWS_Client(
					$this->options->getAccessKeyId(),
					$this->options->getSecretAccessKeyId(), 
					$this->appName,
					$this->appVersion,
					array ('ServiceURL' => $this->options->getMarketplace()->getEndpointUri() . self::FULFILLMENT_INVENTORY_API));
		}
		return $this->inventoryClient;
	}

	/**
	 * getOutboundClient
	 * 
	 * @throws Exception
	 * @return FBAOutboundServiceMWS_Client
	 */
	private function getOutboundClient() {
		if($this->outboundClient == null) {
			$this->options->load();
			if(!$this->options->hasAmazonCredentials()) {
				throw new Exception('No amazon MWS credentials');
			}
			$this->outboundClient = new FBAOutboundServiceMWS_Client(
					$this->options->getAccessKeyId(),
					$this->options->getSecretAccessKeyId(),
					array ('ServiceURL' => $this->options->getMarketplace()->getEndpointUri(). self::FULFILLMENT_OUTBOUND_SHIPMENT_API),
					$this->appName,
					$this->appVersion);
		}
		return $this->outboundClient;
	}
}