Init Push

18 files changed, 1331 insertions, 0 deletions

diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..5e0eda3
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1 @@
+Tim Jeremy Leibacher <timjeremy.leibacher@students.bfh.ch>
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d159169
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
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+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
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+    (at your option) any later version.
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+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+The hypothetical commands `show w' and `show c' should show the appropriate
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+be called something other than `show w' and `show c'; they could even be
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+You should also get your employer (if you work as a programmer) or your
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+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
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+This General Public License does not permit incorporating your program into
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+Public License instead of this License.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..39ca866
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,10 @@
+# This file is in the public domain.
+VERSION=1.0
+
+all:
+	ln -s com_payage_taler com_payage_taler_$(VERSION)
+	zip -r com_payage_taler_$(VERSION).zip com_payage_taler_$(VERSION)
+	rm com_payage_taler_$(VERSION)
+
+clean:
+	rm -f com_payage_taler_$(VERSION).zip
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0ad2f69
--- /dev/null
+++ b/README.md
@@ -0,0 +1,103 @@
+# Taler Gateway For Payage
+
+## Introduction
+
+Welcome to the user documentation for the Payage Gateway that
+integrates Taler as a payment option for your website. This
+documentation will guide you through the installation, configuration,
+and usage of the plugin.  It is important to note that this is not a
+stand-alone plugin and requires the Payage component to be installed
+and configured on your website. For more information on Payage, please
+visit the [Payage
+Documentation](https://www.lesarbresdesign.info/extensions/payage)
+
+## Table of Contents
+
+- [Installation](#installation)
+- [Configuration](#configuration)
+- [Usage](#usage)
+    - [Enabling Taler Payment](#enabling-taler-payment)
+    - [Managing Taler Settings](#managing-taler-settings)
+- [Troubleshooting](#troubleshooting)
+- [Frequently Asked Questions](#frequently-asked-questions)
+
+## Installation
+
+First make sure you have already a version of the Payage Plugin
+installed. If not, please follow the [Payage Installation
+Guide](https://www.lesarbresdesign.info/extensions/payage/installation).
+If you have already installed Payage, you can install the Taler plugin
+simply by donwloading the latest version from the [Taler Plugin
+Releases](https://ftp.gnu.org/gnu/taler/com_payage_taler-latest.zip)
+and installing it through the Joomla plugin manager.
+
+### Enabling Taler Payment
+
+To create a new instance for a Taler Gateway, navigate to the Payage
+component and select the "Gateway Accounts" tab. Click on the "New"
+button to create a new gateway instance. Select "Taler" as the gateway
+type and fill out the required fields.  If you have filled out all the
+required fields you can test if the Taler Backend you configured is
+valid with the "Test" button. If the test is successful you can "Save"
+the gateway. Now you only need to publish it from inside the "Gateway
+Accounts" tab.  To see how to create a payment button inside your
+E-commerce app, refer to the Payage Documentation.
+
+## Special Currencies
+
+The Taler Payage plugin supports all common currencies.  However, if
+you want to use a special currencies that do not have a 3 letter
+ISO-4217 currency code, you have to add an explicit mapping to a 3
+letter currency code: Payage is limited to 3 letter currency codes
+while Taler supports currency codes with up to 11 letters.
+
+To do so, clone the Git repository from [Taler Plugin
+Releases](https://gitlab.ti.bfh.ch/leibt2/taler-joomla) and edit the
+file "com_payage_taler/currencies.csv".  There is already an example
+for the Taler test currency "KUDOS". To add a new special currency,
+simply add a new line following the same format of
+"$NAME,$ABBREVIATION".  Then submit a patch to the maintainers (see
+AUTHORS) to ensure that the new currency is available in future
+releases.  The abbreviation should be some 3 letter code that is *not*
+in ISO-4217. Note that in theory new currency codes could be added to
+ISO-4217, so such unofficial currency codes may need to be removed in
+the future.
+
+## Webhook Configuration For Refunds
+
+To update the Payage database automatically when a refund is made, you
+have to configure a webhook in the Taler merchant backend.  To do so,
+log into the Taler merchant backend Web interface and select the
+"Webhooks" tab. Click on the "New" button to create a new webhook with
+the following values:
+
+  Id: A unique name for the webhook (say "taler-payage-refund-hook")
+  Event: refund
+  Method: 'POST'
+  URL: "https://example.com/index.php?option=com_payage&task=refund"
+  Header: 'Content-Type: application/json'
+  Body: '{"refunded_amount":"{{refund_amount}}","order_id":"{{order_id}}"}'
+
+https://tim-leibacher.ch:8443/index.php?option=com_payage&amp;task=refund&amp;aid=1003&amp;tid=0
+
+- Id: `A unique name for the webhook (say "taler-payage-refund-hook")`
+- Event: `'refund'`
+- Method: `'POST'`
+- URL: `"https://example.com/index.php?option=com_payage&amp;task=refund&amp;aid=1000&amp;tid=0"`
+
+aid stands for the account id. In the "Gateway Accounts" tab you can see which id you should use
+
+- Header: `'Content-Type: application/json'`
+- Body:
+  `'{
+        "order_id": "{{order_id}}"
+    }'`
+
+
+## Frequently Asked Questions
+Q: How can I add my own Translations? \
+A: See [Taler  Translations](https://docs.taler.net/taler-developer-manual.html#how-to-create-a-translation)
+
+Q: Where do I get my own Taler Merchant Backend? \
+A: See [Taler Merchant Backend](https://docs.taler.net/taler-merchant-manual.html)
+
diff --git a/com_payage_taler/currencies.csv b/com_payage_taler/currencies.csv
new file mode 100644
index 0000000..b4cadfd
--- /dev/null
+++ b/com_payage_taler/currencies.csv
@@ -0,0 +1,2 @@
+name,abbreviation
+KUDOS,KUD
\ No newline at end of file
diff --git a/com_payage_taler/install.php b/com_payage_taler/install.php
new file mode 100644
index 0000000..bb2872f
--- /dev/null
+++ b/com_payage_taler/install.php
@@ -0,0 +1,62 @@
+<?php
+/********************************************************************
+Product		: GNU Taler Gateway for Payage
+Date		: 26 Feburary 2023
+Copyright	: Tim Leibacher
+Contact		: https://www.tim-leibacher.ch/contact
+Licence		: GNU General Public License
+*********************************************************************/
+defined('_JEXEC') or die('Restricted Access');
+
+class Payage_Taler_LeibacherInstallerScript
+{
+public function preflight($type, $parent)
+{
+	$app = JFactory::getApplication();
+    $payage_xml_file = JPATH_ADMINISTRATOR.'/components/com_payage/payage.xml';
+    if (!file_exists($payage_xml_file))
+		{
+        $app->enqueueMessage("Please install Payage before installing gateway addons", 'error');
+		return false;
+		}
+
+	$xml_array = JInstaller::parseXMLInstallFile($payage_xml_file);
+	$payage_version = $xml_array['version'];
+	if (version_compare($payage_version,"2.28","<"))
+		{
+        $app->enqueueMessage("This Payage addon requires at least Payage 2.28. Please install the latest version of Payage first.", 'error');
+		return false;
+		}
+
+// get the previously installed version, if any
+
+	if (file_exists(JPATH_ADMINISTRATOR.'/components/com_payage/payage_taler_leibacher.xml'))
+		{
+		$xml_array = JInstaller::parseXMLInstallFile(JPATH_ADMINISTRATOR.'/components/com_payage/payage_taler_leibacher.xml');
+		$this->previous_version = $xml_array['version'];
+		}
+
+    return true;
+}
+
+//-------------------------------------------------------------------------------
+// Called at uninstall time
+//
+public function uninstall($parent)
+{
+    $app = JFactory::getApplication();
+    $app->enqueueMessage("Taler gateway for Payage has been uninstalled.");
+}
+
+//-------------------------------------------------------------------------------
+// The main install function
+//
+public function postflight($type, $parent)
+{
+    $this->app = JFactory::getApplication();
+	  $this_version = $parent->getManifest()->version;
+    $this->app->enqueueMessage("Payage Taler version $this_version installed.", 'message');
+	return true;
+}
+
+}
diff --git a/com_payage_taler/language/en-GB/en-GB.com_payage_taler_leibacher.ini b/com_payage_taler/language/en-GB/en-GB.com_payage_taler_leibacher.ini
new file mode 100644
index 0000000..cc65d63
--- /dev/null
+++ b/com_payage_taler/language/en-GB/en-GB.com_payage_taler_leibacher.ini
@@ -0,0 +1,11 @@
+COM_PAYAGE_TALER_BACKEND_URL="Taler Backend URL"
+COM_PAYAGE_TALER_BACKEND_URL_DESC="Set the URL of the Taler merchant backend. (Example: 'https://backend.demo.taler.net/')"
+COM_PAYAGE_TALER_REFUND_TIME="Taler Refund Time"
+COM_PAYAGE_TALER_KEY="Taler Backend API Key"
+COM_PAYAGE_TALER_KEY_DESC="Must start with 'secret-token:'"
+COM_PAYAGE_TALER_CURRENCY_NOT_FOUND="You are using a custom currency that is not recognized. Please add it to the 'currencies.csv'."
+COM_PAYAGE_GATEWAY_TEST_BAD_KEY="Wrong Taler merchant backend or invalid secret token"
+COM_PAYAGE_GATEWAY_TEST_PASSED="Connection established successfully"
+COM_PAYAGE_TALER_REFUND_TIME_DESCRIPTION="Time in seconds after order was created"
+COM_PAYAGE_GATEWAY_TEST_BAD_URL="Backend URL is not reachable"
+COM_PAYAGE_GATEWAY_TEST_SERVER_ERROR="Server error"
\ No newline at end of file
diff --git a/com_payage_taler/pay_buttons/taler_button_grey_128.png b/com_payage_taler/pay_buttons/taler_button_grey_128.png
new file mode 100644
index 0000000..cea1f53
--- /dev/null
+++ b/com_payage_taler/pay_buttons/taler_button_grey_128.png
diff --git a/com_payage_taler/pay_buttons/taler_button_grey_200.png b/com_payage_taler/pay_buttons/taler_button_grey_200.png
new file mode 100644
index 0000000..d81f8f1
--- /dev/null
+++ b/com_payage_taler/pay_buttons/taler_button_grey_200.png
diff --git a/com_payage_taler/pay_buttons/taler_button_grey_232.png b/com_payage_taler/pay_buttons/taler_button_grey_232.png
new file mode 100644
index 0000000..31036a7
--- /dev/null
+++ b/com_payage_taler/pay_buttons/taler_button_grey_232.png
diff --git a/com_payage_taler/pay_buttons/taler_button_orange_128.png b/com_payage_taler/pay_buttons/taler_button_orange_128.png
new file mode 100644
index 0000000..c790d98
--- /dev/null
+++ b/com_payage_taler/pay_buttons/taler_button_orange_128.png
diff --git a/com_payage_taler/pay_buttons/taler_button_orange_200.png b/com_payage_taler/pay_buttons/taler_button_orange_200.png
new file mode 100644
index 0000000..1a7924a
--- /dev/null
+++ b/com_payage_taler/pay_buttons/taler_button_orange_200.png
diff --git a/com_payage_taler/pay_buttons/taler_button_orange_232.png b/com_payage_taler/pay_buttons/taler_button_orange_232.png
new file mode 100644
index 0000000..fb90b6d
--- /dev/null
+++ b/com_payage_taler/pay_buttons/taler_button_orange_232.png
diff --git a/com_payage_taler/payage_taler_leibacher.xml b/com_payage_taler/payage_taler_leibacher.xml
new file mode 100644
index 0000000..aedea61
--- /dev/null
+++ b/com_payage_taler/payage_taler_leibacher.xml
@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<extension type="file" version="3.7.0" method="upgrade">
+    <name>Payage_Taler</name>
+    <creationDate>26 February 2023</creationDate>
+    <author>Tim Leibacher</author>
+    <copyright>Tim Leibacher</copyright>
+    <license>GNU/GPL</license>
+    <authorUrl>https://Tim-Leibacher.ch</authorUrl>
+    <version>1.0</version>
+    <description>Taler Gateway for Payage</description>
+
+    <scriptfile>install.php</scriptfile>
+
+    <gateway_info>
+        <type>Taler_Leibacher</type>
+        <shortName>Taler</shortName>
+        <longName>Taler Payments</longName>
+        <defaultButton>images/pay_buttons/taler_button_grey_232</defaultButton>
+        <defaultTitle>Pay with Taler</defaultTitle>
+        <gatewayUrl>https://taler.net/</gatewayUrl>
+        <helpUrl>https://www.google.com</helpUrl>
+        <docUrl>https://www.tim-leibacher.ch/taler/doc</docUrl>
+    </gateway_info>
+
+    <fileset>
+        <files target="administrator/components/com_payage">
+            <filename>payage_taler_leibacher.xml</filename>
+        </files>
+
+        <files target="images">
+            <folder>pay_buttons</folder>
+        </files>
+
+        <files target="administrator/components/com_payage/models">
+            <filename>taler_leibacher.php</filename>
+        </files>
+
+        <files target="administrator/components/com_payage/forms">
+            <filename>taler_leibacher.xml</filename>
+        </files>
+
+        <files folder="language/en-GB" target="administrator/components/com_payage/language/en-GB">
+            <filename>en-GB.com_payage_taler_leibacher.ini</filename>
+        </files>
+
+        <files target="administrator/components/com_payage">
+            <filename>currencies.csv</filename>
+        </files>
+    </fileset>
+
+    <updateservers>
+        <server type="extension" priority="2" name="Taler Component"><![CDATA[https://ftp.gnu.org/gnu/taler/com_payage_taler-latest.zip]]></server>
+    </updateservers>
+
+</extension>
diff --git a/com_payage_taler/taler_leibacher.php b/com_payage_taler/taler_leibacher.php
new file mode 100644
index 0000000..7d512c7
--- /dev/null
+++ b/com_payage_taler/taler_leibacher.php
@@ -0,0 +1,622 @@
+<?php
+/**
+ * @version     1.0.0
+
+ * @date        2023-05-29
+ * @copyright   2023 Tim Leibacher
+ * @license     https://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU/GPLv2
+ */
+defined("_JEXEC") or die("Restricted Access");
+
+use Joomla\CMS\Uri\Uri;
+
+/**
+ * @since     1.0.0
+ */
+class PayageModelTaler_Leibacher extends PayageModelAccount
+{
+	/**
+	 * Default response timeout (in seconds).
+	 */
+	public const DEFAULT_TIMEOUT = 10;
+	/**
+	 * Default connect timeout (in seconds).
+	 */
+	public const DEFAULT_CONNECT_TIMEOUT = 5;
+
+	/**
+	 * HTTP Methods
+	 */
+	public const HTTP_GET = "GET";
+	public const HTTP_POST = "POST";
+
+	var $app = null;
+
+	var $common_data = null;
+
+	var $specific_data = null;
+
+	function __construct()
+	{
+		parent::__construct();
+		$xml_array = JInstaller::parseXMLInstallFile(JPATH_ADMINISTRATOR . '/components/com_payage/payage_taler_leibacher.xml');
+		$this->gw_addon_version = $xml_array['version'];
+		LAPG_trace::trace("Taler: v" . $this->gw_addon_version);
+	}
+
+	// -------------------------------------------------------------------------------
+	// Initialise data items specific to this gateway
+	// - the account class initialises the common data items
+	// 
+	public function initData($gateway_info)
+	{
+		parent::initData($gateway_info);
+		$this->specific_data = new stdClass;
+		$this->specific_data->backend_url = '';
+		$this->specific_data->backend_key = '';
+		$this->specific_data->currency = '';
+		$this->specific_data->refund_time = '';
+		$this->specific_data->tid_optional = true;
+
+	}
+
+	// -------------------------------------------------------------------------------
+	// Get the post data specific to this gateway
+	// - the account class gets the common data items
+	// 
+	public function getPostData()
+	{
+		parent::getPostData();
+		$this->specific_data = new stdClass;
+		$jinput = JFactory::getApplication()->input;
+		$this->specific_data->test_mode = $jinput->get('test_mode', '0', 'STRING');
+		$this->specific_data->backend_url = $jinput->get('backend_url', '', 'STRING');
+		$this->specific_data->backend_key = $jinput->get('backend_key', '', 'STRING');
+		$this->specific_data->refund_time = $jinput->get('refund_time', '', 'STRING');
+		$currency = $this->create_payment(self::HTTP_GET, $this->specific_data->backend_url . '/config', null)['currency'];
+		$this->specific_data->tid_optional = true;
+
+		// To allow for custom currencies which don't use 3 Letter abbreviation
+		if (strlen($currency) != 3)
+		{
+			$this->specific_data->currency = $this->convertCurrency($currency, "currency2Abr");
+		}
+		else
+		{
+			$this->specific_data->currency = $currency;
+		}
+
+		$this->common_data->account_currency = $this->specific_data->currency;
+
+		$languages = PayageHelper::get_site_languages();
+
+		foreach ($languages as $tag => $name)
+		{
+			$this->translations[$tag]['account_language'] = $jinput->get($tag . '_account_language', '', 'string');
+		}
+
+		return $this->specific_data;
+	}
+
+	function convertCurrency($currency, $conversionType)
+	{
+		defined('JPATH_PAYMENT') or define('JPATH_PAYMENT', JPATH_SITE . '/administrator/components/com_payage');
+		$file = JPATH_PAYMENT . '/currencies.csv';
+
+		if (JFile::exists($file))
+		{
+			// Open the CSV file
+			$file = fopen($file, 'r');
+
+			while (($row = fgetcsv($file)) !== false)
+			{
+				if ($conversionType === 'currency2Abr' && $row[0] == $currency)
+				{
+					$value = $row[1];
+					fclose($file);
+					LAPG_trace::trace($value);
+
+					return $value;
+				}
+				elseif ($conversionType === 'abr2Currency' && $row[1] == $currency)
+				{
+					$value = $row[0];
+					fclose($file);
+
+					return $value;
+				}
+			}
+		}
+
+		$errors[] = JText::_('COM_PAYAGE_INVALID') . ' ' . JText::_('COM_PAYAGE_TALER_CURRENCY_NOT_FOUND');
+		$this->app->enqueueMessage(implode('<br />', $errors), 'error');
+
+		return 'ERR';
+	}
+
+	// -------------------------------------------------------------------------------
+	// Validate the account details
+	// - the account class checks the common data items
+	// 
+	public function check_post_data()
+	{
+		$errors = array();
+		$ok = parent::check_post_data();    // Check the common data
+
+		if (!str_starts_with($this->specific_data->backend_url, "http"))
+		{
+			$errors[] = JText::_('COM_PAYAGE_INVALID') . ' ' . JText::_('COM_PAYAGE_TALER_BACKEND_URL');
+		}
+
+		if (!str_starts_with($this->specific_data->backend_key, "secret-token:"))
+		{
+			$errors[] = JText::_('COM_PAYAGE_INVALID') . ' ' . JText::_('COM_PAYAGE_TALER_KEY');
+		}
+
+		if (!ctype_digit(trim($this->specific_data->refund_time)))
+		{
+			$errors[] = JText::_('COM_PAYAGE_INVALID') . ' ' . JText::_('COM_PAYAGE_TALER_REFUND_TIME');
+		}
+
+		if (!empty($errors))
+		{
+			$this->app->enqueueMessage(implode('<br />', $errors), 'error');
+			$ok = false;
+		}
+
+		return $ok;
+	}
+
+	// -------------------------------------------------------------------------------
+	// handle an incoming request from the payment gateway
+	// - we assume this is a genuine request because the front end found the account and payment records
+	// our model instance already has $this->common_data and $this->specific_data
+	// 
+	public function Gateway_handle_request($payment_model)
+	{
+
+		$jinput = JFactory::getApplication()->input;
+		$task = $jinput->get('task', '', 'STRING');
+		$this->payment_model = $payment_model;
+		$this->payment_data = $payment_model->data;
+
+		switch ($task)
+		{
+			case 'create':                        // Someone clicked a Payage Taler payment button
+				$action = $this->create();
+
+		return $action;
+
+			case 'return':
+			case 'update':
+			case 'refund':          // Used for the webhook
+				return $this->handle_return($task);
+
+			case 'cancel':
+				return LAPG_CALLBACK_CANCEL;
+
+			default:
+				LAPG_trace::trace("Taler handle_request() unknown task $task");
+
+		return LAPG_CALLBACK_BAD;            // Should never happen
+		}
+
+	}
+
+	// -------------------------------------------------------------------------------
+	// Create a payment in Taler
+	// - we redirect here from Taler payment buttons
+	// 
+	private function create()
+	{
+		LAPG_trace::trace('Taler create() for Payage transaction id: ' . $this->payment_data->pg_transaction_id);
+
+		$this->payment_data->account_id = $this->common_data->id;	// Save the account_id now in case of errors
+		$this->payment_data->gw_addon_version = $this->gw_addon_version;
+		$stored = $this->payment_model->store();
+
+		if (!function_exists('curl_version'))
+		{
+			LAPG_trace::trace("CURL not installed - cannot use Taler");
+			$this->payment_data->pg_status_code = LAPG_STATUS_FAILED;
+			$this->payment_data->pg_status_text = JText::_('COM_PAYAGE_CURL_NOT_INSTALLED');
+			$stored = $this->payment_model->store();
+
+			return LAPG_CALLBACK_USER;			// Return to the calling application
+		}
+
+		// Set up the payment in the gateway
+
+		$redirectUrl = htmlentities(JURI::root() . 'index.php?option=com_payage&task=return&aid=' . $this->common_data->id . '&tid=' . $this->payment_data->pg_transaction_id . '&tmpl=component&format=raw');
+		$customer_fee = parent::calculate_gateway_fee($this->common_data, $this->payment_data->gross_amount);
+		$total_amount = $this->payment_data->gross_amount + $customer_fee;
+		$total_amount = number_format($total_amount, 2, '.', '');	// We currently only support currencies that use two decimal places
+		$currency = $this->convertCurrency($this->common_data->account_currency, "abr2Currency");
+
+		if ($this->specific_data->refund_time < 10)
+		{
+			$refund_time = 0;
+		}
+		else
+		{
+			$refund_time = intval($this->specific_data->refund_time) * 1000;
+		}
+
+		try
+		{
+			$data = array(
+				'refund_delay' => array(
+					'd_us' => (int) $refund_time
+				),
+				'order' => array(
+					'amount' => $currency . ':' . $total_amount,
+					'summary' => Uri::getInstance()->getHost() . ' - ' . $this->payment_data->item_name,
+					'fulfillment_url' => $redirectUrl
+				)
+			);
+
+			// Redirect the browser to the Taler gateway
+
+			$response_data = $this->create_payment(self::HTTP_POST, $this->specific_data->backend_url . '/private/orders', json_encode($data));
+
+			$order_id = $response_data['order_id'];
+			$token = $response_data['token'];
+
+			// Save the payment details so far
+
+			$this->payment_data->gw_transaction_id = $order_id;
+			$stored = $this->payment_model->store();
+
+			$url = $this->specific_data->backend_url . '/orders/' . $order_id . '?token=' . $token;
+			LAPG_trace::trace("Taler redirecting to: $url");
+			$app = JFactory::getApplication();
+			$app->redirect($url);
+
+			return LAPG_CALLBACK_NONE;			// We are at the gateway - we will go back to the calling application later
+		}
+		catch (Exception $e)
+		{
+			$html = $e->getMessage() . '<br>' . JText::_('COM_PAYAGE_GATEWAY_TEST_RESPONSE_NOT_OK');
+			$this->app->enqueueMessage($html, 'error');
+
+			return;
+		}
+	}
+
+	private function create_payment($httpMethod, $url, $httpBody)
+	{
+		$curl = curl_init();
+
+		$headers = array(
+			'Authorization: Bearer ' . $this->specific_data->backend_key,
+			'Content-Type: application/json'
+		);
+
+		curl_setopt($curl, CURLOPT_URL, $url);
+
+		curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
+		curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
+		curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, self::DEFAULT_CONNECT_TIMEOUT);
+		curl_setopt($curl, CURLOPT_TIMEOUT, self::DEFAULT_TIMEOUT);
+
+		switch ($httpMethod)
+		{
+			case self::HTTP_POST:
+				curl_setopt($curl, CURLOPT_POST, true);
+				curl_setopt($curl, CURLOPT_POSTFIELDS, $httpBody);
+				break;
+			case self::HTTP_GET:
+				break;
+			default:
+				throw new InvalidArgumentException("Invalid http method: " . $httpMethod);
+		}
+
+		$response = curl_exec($curl);
+		$httpCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
+
+		if ($response === false)
+		{
+			$curlErrorMessage = "Curl error: " . curl_error($curl);
+			curl_close($curl);
+			throw new ErrorException($curlErrorMessage);
+		}
+
+		curl_close($curl);
+		$responseData = json_decode($response, true);
+		$responseData['httpCode'] = $httpCode;
+
+		return $responseData;
+	}
+
+	// -------------------------------------------------------------------------------
+	// handle a return from Taler
+	// - this is when Taler re-directs back to the client site after a payment
+	// 
+	private function handle_return($task)
+	{
+		LAPG_trace::trace("Taler handle_return($task) for Payage transaction id: " . $this->payment_data->pg_transaction_id);
+
+		// Used for the Webhook to get the correct Order
+		if ($task == 'refund')
+		{
+			if ($_SERVER['REQUEST_METHOD'] === 'POST')
+			{
+				if ($_SERVER['CONTENT_TYPE'] === 'application/json')
+				{
+					$json_data = file_get_contents('php://input');
+					$body = json_decode($json_data, true);
+
+					if ($body !== null)
+					{
+						$orderId = $body['order_id'];
+
+						LAPG_trace::trace('Order with Id: ' . $orderId . ' is being refunded');
+
+						$this->payment_data = $this->payment_model->getOne($orderId, 'gw_transaction_id');
+					}
+					else
+					{
+						LAPG_trace::trace("Missing Order ID in JSON body");
+
+						return LAPG_STATUS_FAILED;
+					}
+				}
+				else
+				{
+					LAPG_trace::trace("refunds triggered but without a JSON header");
+
+					return LAPG_STATUS_FAILED;
+				}
+			}
+			else
+			{
+				LAPG_trace::trace("refund triggered but wihtout a POST request");
+
+				return LAPG_STATUS_FAILED;
+			}
+		}
+
+		// Get the payment status from the gateway
+		$response_data = $this->create_payment(self::HTTP_GET, $this->specific_data->backend_url . '/private/orders/' . $this->payment_data->gw_transaction_id, null);
+		$status = $response_data['order_status'];
+
+		switch ($status)
+		{
+			case 'paid':
+				$new_status_code = LAPG_STATUS_SUCCESS;
+				break;
+			case 'expired':
+			case 'canceled':
+				$new_status_code = LAPG_STATUS_CANCELLED;
+				break;
+			case 'failed':
+				$new_status_code = LAPG_STATUS_FAILED;
+				break;
+			case 'pending':
+			case 'unpaid':
+				$new_status_code = LAPG_STATUS_PENDING;
+				break;
+			default:
+				$new_status_code = LAPG_STATUS_FAILED;
+		}
+
+		// Check for refunds
+
+		$refund_description = '';
+
+		if ($response_data['refunded'])
+		{
+			$amount_refunded = trim(explode(':', $response_data['refund_amount'])[1]);
+			$amount_total = trim(explode(':', $response_data['contract_terms']['amount'])[1]);
+			$refund_details = $response_data['refund_details'];
+			$refund_description = 'Taler: ' . JText::_('COM_PAYAGE_REFUNDED') . ' ' . $amount_refunded . ' details: ' . end($response_data['refund_details'])['reason'];
+			LAPG_trace::trace("Taler: $refund_description");
+			$amount_remaining = (float) $amount_total - (float) $amount_refunded;
+
+			if ($amount_remaining == 0.0)
+			{
+				$new_status_code = LAPG_STATUS_REFUNDED;
+				$status = 'refunded';
+			}
+		}
+
+		// Multiple calls
+
+		$result = $this->payment_model->ladb_lockTable('#__payage_payments');
+
+		if ($result === true)
+		{
+			LAPG_trace::trace('Locked the payment table ok');
+		}
+		else
+		{
+			LAPG_trace::trace('Failed to lock the payment table: ' . $this->payment_model->ladb_error_text);
+		}
+
+		$this->payment_data = $this->payment_model->getOne($this->payment_data->id);
+		$this->payment_data->account_id = $this->common_data->id;
+		$this->payment_data->gw_addon_version = $this->gw_addon_version;
+		$this->payment_data->pg_status_code = $new_status_code;
+		$this->payment_data->pg_status_text = $status;
+
+		// Update the history
+
+		if ($refund_description != '')
+		{
+			$this->payment_model->add_history_entry($refund_description);
+		}
+		else
+		{
+			$status_description = PayageHelper::getPaymentDescription($this->payment_data->pg_status_code);
+			$this->payment_model->add_history_entry("Taler: $status_description");
+		}
+
+		// Update the payment record
+		// we store some details in the root of gw_transaction_details so they are easily visible
+		// we also store each update separately in case something goes wrong and we need to see the full history
+
+		$stored = $this->payment_model->store();
+		$this->payment_model->ladb_unlock();
+
+		// For a 'return' task, we redirect to the calling application
+
+		if ($task == 'return')
+		{
+			LAPG_trace::trace("Taler $task returning LAPG_CALLBACK_USER");
+
+			return LAPG_CALLBACK_USER;
+		}
+
+		// It's an 'update'
+		// if this was a refund, we must update the application
+
+		if ($new_status_code == LAPG_STATUS_REFUNDED)
+		{
+			LAPG_trace::trace("Taler $task [refund], returning LAPG_CALLBACK_UPDATE");
+
+			return LAPG_CALLBACK_UPDATE;
+		}
+
+		LAPG_trace::trace("Taler $task, returning LAPG_CALLBACK_NONE");
+
+		return LAPG_CALLBACK_NONE;
+	}
+
+
+	// -------------------------------------------------------------------------------
+	// Verify the amount, currency and recipient of a payment
+	// - set the payment status code and text accordingly
+	// 
+	private function check_payment($customer_fee, $gross_received, $currency_received, $receiver_email)
+	{
+		$expected_gross = $this->payment_data->gross_amount;
+		$expected_total = $expected_gross + $customer_fee;
+		$str_expected_total = number_format($expected_total, 2);
+		$str_actual_total = number_format($gross_received, 2);
+		LAPG_trace::trace("check_payment() gross_amount = $expected_gross, customer_fee = $customer_fee, expected_payment_amount = $expected_total, gross_received = $gross_received");
+
+		if (!isset($this->specific_data->auto_tax))
+		{
+								// New parameter may not have been saved yet
+			$this->specific_data->auto_tax = 0;                                    // default to no
+		}
+
+		if (($this->specific_data->auto_tax == 0) && ($str_expected_total != $str_actual_total))
+		{
+			$this->payment_data->pg_status_code = LAPG_STATUS_FAILED;
+			$this->payment_data->pg_status_text = JText::sprintf("COM_PAYAGE_MISMATCH_AMOUNT", $str_expected_total, $str_actual_total);
+			LAPG_trace::trace($this->payment_data->pg_status_text);
+		}
+
+		if (($this->specific_data->auto_tax == 1) && ($str_actual_total < $str_expected_total))
+		{
+			$this->payment_data->pg_status_code = LAPG_STATUS_FAILED;
+			$this->payment_data->pg_status_text = JText::sprintf("COM_PAYAGE_MISMATCH_AMOUNT", $str_expected_total, $str_actual_total);
+			LAPG_trace::trace($this->payment_data->pg_status_text);
+		}
+
+		if ($this->common_data->account_currency != $currency_received)
+		{
+			$this->payment_data->pg_status_code = LAPG_STATUS_FAILED;
+			$this->payment_data->pg_status_text = JText::sprintf("COM_PAYAGE_MISMATCH_CURRENCY", $this->common_data->account_currency, $currency_received);
+			LAPG_trace::trace($this->payment_data->pg_status_text);
+		}
+
+		if (strcasecmp($this->common_data->account_email, $receiver_email) == 0)
+		{
+			return;
+		}
+
+		if (isset($this->specific_data->account_primary_email) && strcasecmp($this->specific_data->account_primary_email, $receiver_email) == 0)
+		{
+			return;
+		}
+
+		$this->payment_data->pg_status_code = LAPG_STATUS_FAILED;
+
+		if (isset($this->specific_data->account_primary_email))
+		{
+			$email_address = $this->common_data->account_email . ' OR ' . $this->specific_data->account_primary_email;
+		}
+		else
+		{
+			$email_address = $this->common_data->account_email;
+		}
+
+		$this->payment_data->pg_status_text = JText::sprintf("COM_PAYAGE_MISMATCH_RECIPIENT", $email_address, $receiver_email);
+		LAPG_trace::trace($this->payment_data->pg_status_text);
+	}
+
+
+	// -------------------------------------------------------------------------------
+	// Build a Buy Now button
+	// 
+	public function Gateway_make_button($payment_data, $call_array, $app_fee)
+	{
+
+		$process_url = JURI::root() . 'index.php?option=com_payage&task=create&aid=' . $this->common_data->id . '&tid=' . $payment_data->pg_transaction_id . '&tmpl=component&format=raw';
+		$button_url = JURI::base(true) . '/' . $this->common_data->button_image;
+		$html = '<form class="pb-form pb-taler" action="' . $process_url . '" method="post" >';
+		$html .= '<input type="image" src="' . $button_url . '" alt="Taler" title="' . $this->common_data->button_title . '" ' . $call_array['button_extra'] . '>';
+		$html .= "</form>";
+
+		return $html;
+	}
+
+	// -------------------------------------------------------------------------------
+	// Test a Taler API call
+	// 
+	public function Gateway_test()
+	{
+		LAPG_trace::trace("Taler gateway test with key " . $this->specific_data->backend_key);
+		$curl_info = curl_version();
+		$curl_version = $curl_info['version'];
+		LAPG_trace::trace("PHP version: " . PHP_VERSION);
+		LAPG_trace::trace("CURL version: $curl_version");
+		LAPG_trace::trace("Openssl version: " . OPENSSL_VERSION_TEXT);
+
+		if (!function_exists('curl_version'))
+		{
+			$this->app->enqueueMessage("FAIL: CURL is not installed", 'error');
+
+			return;
+		}
+
+		try                                                    // Try to connect to Taler
+		{
+			$response_data = $this->create_payment(self::HTTP_GET, $this->specific_data->backend_url . '/private', json_encode($data));
+			$httpCode = $response_data['httpCode'];
+
+			switch ($httpCode)
+			{
+				case 200:
+				case 201:
+					$msg = JText::_('COM_PAYAGE_GATEWAY_TEST_PASSED');
+					$this->app->enqueueMessage($msg, 'message');
+					break;
+				case 401:
+					$msg = JText::_('COM_PAYAGE_GATEWAY_TEST_BAD_KEY');
+					$this->app->enqueueMessage($msg, 'error');
+					break;
+                case 404:
+                    $msg = JText::_('COM_PAYAGE_GATEWAY_TEST_BAD_URL');
+                    $this->app->enqueueMessage($msg, 'error');
+                    break;
+                case str_starts_with($httpCode, '5'):
+                    $msg = JText::_('COM_PAYAGE_GATEWAY_TEST_SERVER_ERROR');
+                    $this->app->enqueueMessage($msg, 'error');
+                    break;
+			}
+		}
+		catch (Exception $e)
+		{
+			$html = $e->getMessage() . '<br>' . JText::_('COM_PAYAGE_GATEWAY_TEST_RESPONSE_NOT_OK');
+			$this->app->enqueueMessage($html, 'error');
+
+			return;
+		}
+
+		LAPG_trace::trace("Taler Gateway_test done");
+	}
+}
+
diff --git a/com_payage_taler/taler_leibacher.xml b/com_payage_taler/taler_leibacher.xml
new file mode 100644
index 0000000..621605f
--- /dev/null
+++ b/com_payage_taler/taler_leibacher.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<form>
+	<fieldset name="main">
+		<field name="account_name" type="text" class="input-xlarge" label="COM_PAYAGE_ACCOUNT_NAME" required="true" />
+
+		<field name="test_mode" type="hidden" />
+
+		<field name="backend_url" type="text" class ="input-xlarge" label="COM_PAYAGE_TALER_BACKEND_URL" description="COM_PAYAGE_TALER_BACKEND_URL_DESC" required="true" />
+
+		<field name="backend_key" type="text" class ="input-xlarge" label="COM_PAYAGE_TALER_KEY" description="COM_PAYAGE_TALER_KEY_DESC" required="true"  />
+
+
+		<field name="button_image" type="media" label="COM_PAYAGE_BUTTON" directory="pay_buttons" />
+
+		<field name="account_description" type="text" class="input-xxlarge" label="COM_PAYAGE_DESCRIPTION" description="COM_PAYAGE_ACCOUNT_DESCRIPTION_DESC" />
+
+		<field name="account_group" type="text" class="input-xlarge" label="COM_PAYAGE_GROUP" />
+
+		<field name="refund_time" type="text" class="input-xlarge" label="COM_PAYAGE_TALER_REFUND_TIME" description="COM_PAYAGE_TALER_REFUND_TIME_DESCRIPTION" />
+
+		<field name="currency_symbol" type="text" class="input-xxlarge" default="£" label="COM_PAYAGE_CURRENCY_SYMBOL" required="true" />
+
+
+
+	</fieldset>
+
+</form>
diff --git a/dis/Setup/README.md b/dis/Setup/README.md
new file mode 100644
index 0000000..47d7c7f
--- /dev/null
+++ b/dis/Setup/README.md
@@ -0,0 +1,8 @@
+# Setup
+
+Webserver:  apache2
+Database:   mariadb
+Joomla:     V 4.2
+
+Joobla Admin: leibt2  leibt2
+Joomla_DB:  joomla_user   Password123!
diff --git a/dis/Setup/setup.sh b/dis/Setup/setup.sh
new file mode 100644
index 0000000..4b6cbd8
--- /dev/null
+++ b/dis/Setup/setup.sh
@@ -0,0 +1,91 @@
+#!/bin/bash
+
+MYSQL_ROOT_PASSWORD="Password123!"
+JOOMLADB_PASSWORD="Password123!"
+WEBSITE="tim-leibacher.ch"
+NAME="tim-leibacher"
+#exec 2> error 1> mylog
+
+
+
+sudo apt update && sudo apt upgrade -y
+
+echo "Installing apache2"
+
+sudo apt install apache2 -y
+sudo systemctl start apache2
+sudo systemctl enable apache2
+
+
+echo "installing php"
+
+sudo apt install php libapache2-mod-php php-dev php-bcmath php-intl php-soap php-zip php-curl php-mbstring php-mysql php-gd php-xml -y
+
+#Recommended settings from Joomla
+sudo sed -i "s/memory_limit = .*/memory_limit = 512M/" /etc/php/7.2/fpm/php.ini
+sudo sed -i "s/upload_max_filesize = .*/upload_max_filesize = 128M/" /etc/php/7.2/fpm/php.ini
+sudo sed -i "s/post_max_size = .*/post_max_size = 128M/" /etc/php/7.2/fpm/php.ini
+sudo sed -i "s/max_execution_time = .*/max_execution_time = 3000/" /etc/php/7.2/fpm/php.ini
+
+echo "installing mariadb"
+
+sudo apt install mariadb-server -y
+systemctl start mariadb
+systemctl enable mariadb
+
+
+create_DB="CREATE DATABASE IF NOT EXISTS joomla;"
+create_USER="CREATE USER IF NOT EXISTS 'joomla_user'@'localhost' IDENTIFIED BY '$JOOMLADB_PASSWORD';"
+privilege="GRANT ALL ON joomla.* TO 'joomla_user'@'localhost';"
+flushDB="FLUSH PRIVILEGES;"
+
+sudo mysql -e "$create_DB"
+sudo mysql -e "$create_USER"
+sudo mysql -e "$privilege"
+sudo mysql -e "$flushDB"
+
+
+echo "download Joomla"
+cd /var/tmp
+
+sudo wget -N https://downloads.joomla.org/cms/joomla4/4-2-0/Joomla_4-2-0-Stable-Full_Package.tar.gz
+sudo mkdir -p /var/www/html/$WEBSITE
+sudo tar -vxf Joomla_4-2-0-Stable-Full_Package.tar.gz -C /var/www/html/$WEBSITE
+
+sudo chown -R www-data:www-data /var/www/html/$WEBSITE/
+
+
+
+echo "<VirtualHost *:80>
+
+ServerAdmin webmaster@$WEBSITE
+
+ServerName $WEBSITE
+ServerAlias www.$WEBSITE
+DocumentRoot /var/www/html/$WEBSITE
+
+<Directory /var/www/html/$WEBSITE/>
+        Options FollowSymlinks
+        AllowOverride All
+        Require all granted
+</Directory>
+
+ErrorLog ${APACHE_LOG_DIR}/${WEBSITE}_error.log
+CustomLog ${APACHE_LOG_DIR}/${WEBSITE}_access.log combined
+
+</VirtualHost>" > /etc/apache2/sites-available/$NAME.conf
+
+echo "Listen 80
+
+<IfModule ssl_module>
+      Listen 443
+</IfModule ssl_module>
+
+<IfModule mod_gnutls.c>
+        Listen 443
+</IfModule mod_gnutls.c>
+" > /etc/apache2/ports.conf
+
+
+sudo a2ensite $NAME.conf
+sudo systemctl restart apache2