<?php
/*
  Plugin Name: Commweb hosted checkout for woocommerce
  Plugin URI: http://www.sydneyecommerce.com.au
  Description: Allow customers to conveniently checkout directly with Commweb Hosted Checkout
  Author: Sydney Ecommerce
  Version: 1.0
  Author URI: http://www.sydneyecommerce.com.au
 */

add_action('plugins_loaded', 'woocommerce_sydneyecommerce_commweb_hosted_checkout_init', 0);
add_action('init', 'init_start_session', 1);

function init_start_session() {
    if (!session_id()) {
	session_start();
    }
}

function woocommerce_sydneyecommerce_commweb_hosted_checkout_init() {

    if (!class_exists('WC_Payment_Gateway')) {
	return;
    }

    class WC_COMMWEB_HOSTED_CHECKOUT extends WC_Payment_Gateway {

	public function __construct() {
	    global $woocommerce;

	    $this->id = 'commweb_hosted_checkout';
	    $this->has_fields = false;

	    // Load the form fields.
	    $this->init_form_fields();

	    // Load the settings.
	    $this->init_settings();

	    // Define user set variables
	    $this->title = $this->settings['title'];
	    $this->description = $this->settings['description'];
	    $this->merchant_id = $this->settings['merchant_id'];
	    $this->api_password = $this->settings['api_password'];
	    $this->merchant_name = $this->settings['merchant_name'];
	    $this->checkout_method = $this->settings['checkout_method'];
	    $this->debug = $this->settings['debug'];
	    $this->secure_3d = $this->settings['secure_3d'];

	    include_once( dirname(__FILE__) . '/includes/class-wc-commweb-api.php' );
	    add_action('woocommerce_api_wc_commweb_hosted_checkout', array($this, 'init_commwed_page'));
	    if (version_compare(WOOCOMMERCE_VERSION, '2.0.0', '>=')) {
		add_action('woocommerce_update_options_payment_gateways_' . $this->id, array($this, 'process_admin_options'));
	    } else {
		add_action('woocommerce_update_options_payment_gateways', array(&$this, 'process_admin_options'));
	    }
	}

	/**
	 * Admin Panel Options
	 * - Options for bits like 'title' and availability on a country-by-country basis
	 *
	 * @since 1.0.0
	 */
	public function admin_options() {
	    ?>
	    <h3><?php _e('Commweb hosted checkout', 'woocommerce'); ?></h3>
	    <p><?php _e('Allow customers to conveniently checkout directly with Commweb.', 'woocommerce'); ?></p>
	    <table class="form-table">
		<?php
		// Generate the HTML For the settings form.
		$this->generate_settings_html();
		?>
	    </table><!--/.form-table-->
	    <?php
	}

	/**
	 * Initialise Gateway Settings Form Fields
	 */
	function init_form_fields() {

	    $this->form_fields = array(
		'enabled' => array(
		    'title' => __('Enable/Disable', 'woocommerce'),
		    'type' => 'checkbox',
		    'label' => __('Enable Commweb hosted checkout', 'woocommerce'),
		    'default' => 'yes'
		),
		'title' => array(
		    'title' => __('Title', 'woocommerce'),
		    'type' => 'text',
		    'desc_tip' => true,
		    'description' => __('This controls the title which the user sees during checkout.', 'woocommerce'),
		    'default' => __('Commweb hosted checkout', 'woocommerce')
		),
		'description' => array(
		    'title' => __('Description', 'woocommerce'),
		    'type' => 'textarea',
		    'desc_tip' => true,
		    'description' => __('This controls the description which the user sees during checkout.', 'woocommerce'),
		    'default' => __("Commweb hosted checkout", 'woocommerce')
		),
		'merchant_id' => array(
		    'title' => __('Merchant ID', 'woocommerce'),
		    'type' => 'text',
		    'desc_tip' => true,
		    'description' => __('Please enter your Merchant ID; this is needed in order to take payment.', 'woocommerce'),
		    'default' => ''
		),
		'api_password' => array(
		    'title' => __('API Password', 'woocommerce'),
		    'type' => 'text',
		    'desc_tip' => true,
		    'description' => __('Please enter your API Password; this is needed in order to take payment.', 'woocommerce'),
		    'default' => ''
		),
		'merchant_name' => array(
		    'title' => __('Merchant name', 'woocommerce'),
		    'type' => 'text',
		    'desc_tip' => true,
		    'description' => __('String to display on head of Lightbox or Payment Page of Commweb.', 'woocommerce'),
		    'default' => __('Commweb hosted checkout', 'woocommerce')
		),
		'checkout_method' => array(
		    'title' => __('Checkout method', 'woocommerce'),
		    'type' => 'select',
		    'class' => 'wc-enhanced-select',
		    'description' => __('To display the checkout interaction in a Lightbox Or To display the checkout interaction on a Hosted Payment Page'),
		    'default' => 'Lightbox',
		    'desc_tip' => true,
		    'options' => array(
			'Lightbox' => __('Lightbox', 'woocommerce'),
			'Redirect' => __('Redirect', 'woocommerce'),
		    )
		),
		'secure_3d' => array(
		    'title' => __('3D Secure', 'woocommerce'),
		    'type' => 'checkbox',
		    'label' => __('Enabled 3D Secure', 'woocommerce'),
		    'default' => 'no',
		    'desc_tip' => true,
		    'description' => __('Enabled 3D Secure', 'woocommerce'),
		),
		'debug' => array(
		    'title' => __('Debug Log', 'woocommerce'),
		    'type' => 'checkbox',
		    'label' => __('Enable Logging', 'woocommerce'),
		    'default' => 'yes',
		    'desc_tip' => true,
		    'description' => __('Log data of Commweb.', 'woocommerce'),
		),
	    );
	}

	/**
	 * Process the payment and return the result
	 * */
	function process_payment($order_id) {
	    $_SESSION['order_id'] = $order_id;
	    if (isset($_SESSION['CurrentOrderId'])) {
		unset($_SESSION['CurrentOrderId']);
	    }
	    return array(
		'result' => 'success',
		'redirect' => get_site_url() . '?wc-api=WC_COMMWEB_HOSTED_CHECKOUT'
	    );
	}

	/**
	 * Process commweb
	 * */
	function init_commwed_page() {
	    $order_id = $_SESSION['order_id'];
	    $order = new WC_Order($order_id);
	    $customer_id = get_current_user_id();
	    $successIndicator = $_SESSION['SuccessIndicator'];

	    $cancel_callback = WC_Cart::get_checkout_url();
	    if (isset($_REQUEST['resultIndicator']) && $_REQUEST['resultIndicator'] == $successIndicator) {
		global $woocommerce;
		$order_detail_commweb = WC_COMMWEB_HOSTED_API::getOrderCommwebDetail($_SESSION['id_for_commweb']);
		if ($order_detail_commweb['result'] == 'SUCCESS') {
		    if ($this->secure_3d == 'yes') {
			if (isset($order_detail_commweb['transaction_3DSecure_authenticationStatus']) && $order_detail_commweb['transaction_3DSecure_authenticationStatus'] == 'AUTHENTICATION_SUCCESSFUL') {
			    $process_order = true;
			} else {
			    $process_order = false;
			    wc_add_notice(__('Payment was unsuccessful, please try again. Card holder is not enrolled', 'woocommerce'), $notice_type = 'error');
			}
		    } else {
			$process_order = true;
		    }
		    if ($process_order == true) {
			$order->add_order_note(sprintf(__('Payment is successful. Transaction receipt: %s.', 'woocommerce'), $order_detail_commweb['transaction_transaction_receipt']));
			$order->payment_complete();
			$woocommerce->cart->empty_cart();
			$redirect_url = $this->get_return_url($order);
		    } else {
			$redirect_url = $cancel_callback;
		    }
		} else {
		    $redirect_url = $cancel_callback;
		}
		wp_redirect($redirect_url);
		exit();
	    } else {
		$street = get_user_meta($customer_id, 'billing_address_1', true);
		$city = get_user_meta($customer_id, 'billing_city', true);
		$billing_postcode = get_user_meta($customer_id, 'billing_postcode', true);
		$state = get_user_meta($customer_id, 'billing_state', true);
		if ($this->debug == 'yes') {
		    WC_COMMWEB_HOSTED_API::log('start process Commweb');
		}
		$image_loading = esc_url(plugins_url('images/loading.gif', __FILE__));
		if ($this->checkout_method == 'Lightbox') {
		    $payment_method = 'Checkout.showLightbox();';
		} else {
		    $payment_method = 'Checkout.showPaymentPage();';
		}
		$total = number_format($order->order_total, 2, '.', '');
		$complete_callback = get_site_url() . '?wc-api=WC_COMMWEB_HOSTED_CHECKOUT';
		if (isset($_SESSION['CurrentOrderId']) && $_SESSION['CurrentOrderId'] == $order_id) {
		    $checkout_session_id = '';
		    $id_for_commweb = '';
		} else {
		    $id_for_commweb = $order_id . '_' . str_replace(array(".", " "), '', microtime());
		    $_SESSION['id_for_commweb'] = $id_for_commweb;
		    $checkout_session_id = WC_COMMWEB_HOSTED_API::getCheckoutSession($order_id, $id_for_commweb);
		}
		ob_start();
		?>
		<html>
		    <head>
			<title><?php echo $this->merchant_name; ?></title>
			<style>
			    #loading{
				position: fixed;
				left: 0px;
				top: 0px;
				width: 100%;
				height: 100%;
				z-index: 9999;
				background: url('<?php echo $image_loading; ?>') 50% 50% no-repeat;
			    }
			</style>
			<script src="<?php echo WC_COMMWEB_HOSTED_API::$_checkout_url_js; ?>" 
				data-complete="completeCallback"
				data-cancel="cancelCallback">
			</script>

			<script type="text/javascript">
			    completeCallback = "<?php echo $complete_callback; ?>";
			    cancelCallback = "<?php echo $cancel_callback; ?>";
			    Checkout.configure({
				merchant: "<?php echo $this->merchant_id; ?>",
				session: {
				    id: "<?php echo $checkout_session_id; ?>"
				},
				order: {
				    amount: "<?php echo $total; ?>",
				    currency: "AUD",
				    description: "Commweb Order",
				    id: "<?php echo $id_for_commweb; ?>"
				},
				billing: {
				    address: {
					street: "<?php echo $street; ?>",
					city: "<?php echo $city; ?>",
					postcodeZip: "<?php echo $billing_postcode; ?>",
					stateProvince: "<?php echo $state; ?>",
					country: "<?php echo ''; ?>"
				    }
				},
				interaction: {
				    merchant: {
					name: "<?php echo $this->merchant_name; ?>"
				    }
				}
			    });
		<?php echo $payment_method; ?>
			</script>
		    </head>
		    <body>
			<div id="loading"></div>
		    </body>
		</html>
		<?php
		$contents = ob_get_contents();
		ob_end_clean();
		echo $contents;
		die();
	    }
	}

    }

    /**
     * Add the gateway to WooCommerce
     * */
    function woocommerce_add_commweb_hosted_checkout_gateway($methods) {
	$methods[] = 'WC_COMMWEB_HOSTED_CHECKOUT';
	return $methods;
    }

    add_filter('woocommerce_payment_gateways', 'woocommerce_add_commweb_hosted_checkout_gateway');
}