<?php
/**
* @package VikBooking
* @subpackage com_vikbooking
* @author Alessio Gaggii - E4J srl
* @copyright Copyright (C) 2022 E4J srl. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
* @link https://vikwp.com
*/
defined('ABSPATH') or die('No script kiddies please!');
/**
* Class handler for admin widget "currency converter".
*
* @since 1.15.4 (J) - 1.5.10 (WP)
*/
class VikBookingAdminWidgetCurrencyConverter extends VikBookingAdminWidget
{
/**
* The instance counter of this widget.
*
* @var int
*/
protected static $instance_counter = -1;
/**
* Class constructor will define the widget name and identifier.
*/
public function __construct()
{
// call parent constructor
parent::__construct();
$this->widgetName = JText::translate('VBO_W_CURRCONV_TITLE');
$this->widgetDescr = JText::translate('VBO_W_CURRCONV_DESCR');
$this->widgetId = basename(__FILE__, '.php');
// define widget and icon and style name
$this->widgetIcon = '<i class="' . VikBookingIcons::i('funnel-dollar') . '"></i>';
$this->widgetStyleName = 'violet';
// load widget's settings
$this->widgetSettings = $this->loadSettings();
if (!is_object($this->widgetSettings)) {
$this->widgetSettings = new stdClass;
}
}
/**
* Custom method for this widget only to exchange the rates between currencies.
* The method is called by the admin controller through an AJAX request.
* The visibility should be public, it should not exit the process, and
* any content sent to output will be returned to the AJAX response.
* In this case we return an array because this method requires "return":1.
*
* It's the actual rendering of the widget.
*/
public function exchangeRates()
{
$wrapper = VikRequest::getString('wrapper', '', 'request');
$from_currency = VikRequest::getString('from_currency', '', 'request');
$to_currency = VikRequest::getString('to_currency', '', 'request');
$amount = VikRequest::getFloat('amount', 1, 'request');
if (empty($from_currency) || empty($to_currency)) {
// use the website default currency
$from_currency = VikBooking::getCurrencyName($iso = true);
// use the default to currency
$to_currency = !strcasecmp($from_currency, 'EUR') ? 'USD' : 'EUR';
}
if ($amount <= 0) {
$amount = 1;
}
// import currency converter class
VikBooking::import('currencyconverter');
// get numbering format data
$format = VikBooking::getNumberFormatData();
// get the instance of the converter object
$converter = new VboCurrencyConverter($from_currency, $to_currency, [$amount], explode(':', $format));
// collect values
$converter_error = null;
$exchanged = null;
$exchange_rate = null;
// make sure from currency is supported for conversion
if (!$converter->currencyExists($from_currency)) {
$converter_error = sprintf('Currency %s is not supported', $from_currency);
} elseif (!$converter->currencyExists($to_currency)) {
$converter_error = sprintf('Currency %s is not supported', $to_currency);
}
if (!$converter_error) {
// exchange the given rates
$exchanged = $converter->convert($get_floats = true);
}
if (!$converter_error && (!is_array($exchanged) || !count($exchanged))) {
// something went wrong during the conversion
$converter_error = $converter->getError();
$converter_error = empty($converter_error) ? 'Error while converting rates' : $converter_error;
} else {
// get the conversion rate
$exchange_rate = $converter->getConversionRate();
// update widget's settings with the lastly used currencies
$this->widgetSettings->from_currency = $from_currency;
$this->widgetSettings->to_currency = $to_currency;
$this->updateSettings(json_encode($this->widgetSettings));
}
// start output buffering
ob_start();
?>
<div class="vbo-widget-currconv-result-data">
<?php
if ($converter_error || empty($exchanged)) {
?>
<p class="err"><?php echo $converter_error; ?></p>
<?php
} else {
?>
<p class="info"><?php echo JText::sprintf('VBO_CONV_RES_OTA_CURRENCY_EXC', $from_currency . ' ' . $amount, $to_currency . ' ' . $exchanged[0]); ?></p>
<p class="info"><?php echo JText::translate('VBO_CONV_RATE'); ?> <span class="badge badge-primary"><?php echo $exchange_rate; ?></span></p>
<?php
}
?>
</div>
<?php
// get the HTML buffer
$html_content = ob_get_contents();
ob_end_clean();
// return an associative array of values
return [
'html' => $html_content,
'exchanged' => $exchanged,
'exchange_rate' => $exchange_rate,
];
}
/**
* Preload the necessary CSS/JS assets.
*
* @return void
*/
public function preload()
{
// load assets
$this->vbo_app->loadSelect2();
}
public function render(?VBOMultitaskData $data = null)
{
// increase widget's instance counter
static::$instance_counter++;
// check whether the widget is being rendered via AJAX when adding it through the customizer
$is_ajax = $this->isAjaxRendering();
// generate a unique ID for the sticky notes wrapper instance
$wrapper_instance = !$is_ajax ? static::$instance_counter : rand();
$wrapper_id = 'vbo-widget-currconv-' . $wrapper_instance;
// import currency converter class
if (!VikBooking::import('currencyconverter')) {
// display nothing
return;
}
// the website default currency
$def_currency = !empty($this->widgetSettings->from_currency) ? $this->widgetSettings->from_currency : VikBooking::getCurrencyName($iso = true);
// the default to currency
$def_to_currency = !strcasecmp($def_currency, 'EUR') ? 'USD' : 'EUR';
if (!empty($this->widgetSettings->to_currency)) {
$def_to_currency = $this->widgetSettings->to_currency;
}
// get numbering format data
$format = VikBooking::getNumberFormatData();
// get the instance of the converter object
$converter = new VboCurrencyConverter($def_currency, $def_to_currency, [1], explode(':', $format));
// grab all currency names
$all_currencies = $converter->getCurrencyNames();
?>
<div class="vbo-admin-widget-wrapper">
<div class="vbo-admin-widget-head">
<h4><?php echo $this->widgetIcon; ?> <span><?php echo $this->widgetName; ?></span></h4>
</div>
<div id="<?php echo $wrapper_id; ?>" class="vbo-widget-currconv-wrap" data-instance="<?php echo $wrapper_instance; ?>">
<div class="vbo-widget-currconv-filters">
<div class="vbo-widget-currconv-filters-main">
<div class="vbo-widget-currconv-filter vbo-widget-currconv-filter-from">
<label for="vbo-widget-currconv-from-<?php echo $wrapper_instance; ?>"><?php echo JText::translate('VBO_CONV_FROM'); ?></label>
<select id="vbo-widget-currconv-from-<?php echo $wrapper_instance; ?>" class="vbo-widget-currconv-sel vbo-widget-currconv-from">
<?php
foreach ($all_currencies as $code => $name) {
?>
<option value="<?php echo $code; ?>"<?php echo !strcasecmp($def_currency, $code) ? ' selected="selected"' : ''; ?>><?php echo $name; ?></option>
<?php
}
?>
</select>
</div>
<div class="vbo-widget-currconv-filter vbo-widget-currconv-filter-amount">
<label for="vbo-widget-currconv-amount-<?php echo $wrapper_instance; ?>"><?php echo JText::translate('VBPSHOWSEASONSFOUR'); ?></label>
<input type="number" id="vbo-widget-currconv-amount-<?php echo $wrapper_instance; ?>" class="vbo-widget-currconv-amount" min="0.01" step="any" value="1" />
</div>
</div>
<div class="vbo-widget-currconv-filters-secondary">
<div class="vbo-widget-currconv-filter vbo-widget-currconv-filter-to">
<label for="vbo-widget-currconv-to-<?php echo $wrapper_instance; ?>"><?php echo JText::translate('VBO_CONV_TO'); ?></label>
<select id="vbo-widget-currconv-to-<?php echo $wrapper_instance; ?>" class="vbo-widget-currconv-sel vbo-widget-currconv-to">
<?php
foreach ($all_currencies as $code => $name) {
?>
<option value="<?php echo $code; ?>"<?php echo !strcasecmp($def_to_currency, $code) ? ' selected="selected"' : ''; ?>><?php echo $name; ?></option>
<?php
}
?>
</select>
</div>
</div>
<div class="vbo-widget-currconv-filters-submit">
<div class="vbo-widget-currconv-filter vbo-widget-currconv-filter-submit">
<button type="button" class="btn vbo-config-btn" onclick="vboWidgetCurrConvCalc('<?php echo $wrapper_id; ?>');"><?php VikBookingIcons::e('exchange-alt'); ?><?php echo JText::translate('VBRATESOVWRATESCALCULATORCALC'); ?></button>
</div>
</div>
</div>
<div class="vbo-widget-currconv-result"></div>
</div>
</div>
<?php
if (static::$instance_counter === 0 || $is_ajax) {
/**
* Print the JS code only once for all instances of this widget.
* The real rendering is made through AJAX, not when the page loads.
*/
?>
<script type="text/javascript">
/**
* Perform the request to exchange rates.
*/
function vboWidgetCurrConvExchange(wrapper) {
var widget_instance = jQuery('#' + wrapper);
if (!widget_instance.length) {
return false;
}
// get vars for making the request
var from_currency = widget_instance.find('.vbo-widget-currconv-from').val();
var to_currency = widget_instance.find('.vbo-widget-currconv-to').val();
var amount = widget_instance.find('.vbo-widget-currconv-amount').val();
// the widget method to call
var call_method = 'exchangeRates';
// make a request to load the available room rates
VBOCore.doAjax(
"<?php echo $this->getExecWidgetAjaxUri(); ?>",
{
widget_id: "<?php echo $this->getIdentifier(); ?>",
call: call_method,
return: 1,
from_currency: from_currency,
to_currency: to_currency,
amount: amount,
tmpl: "component"
},
function(response) {
try {
var obj_res = typeof response === 'string' ? JSON.parse(response) : response;
if (!obj_res.hasOwnProperty(call_method) || !obj_res[call_method]) {
console.error('Unexpected JSON response', obj_res);
return false;
}
// replace HTML with exchange rates
widget_instance.find('.vbo-widget-currconv-result').html(obj_res[call_method]['html']);
} catch(err) {
console.error('could not parse JSON response', err, response);
}
},
function(error) {
// empty result container
widget_instance.find('.vbo-widget-currconv-result').html('');
console.error(error);
}
);
}
/**
* Calculate the exchange rates.
*/
function vboWidgetCurrConvCalc(wrapper) {
var widget_instance = jQuery('#' + wrapper);
if (!widget_instance.length) {
return false;
}
// show loading spinner
widget_instance.find('.vbo-widget-currconv-result').html('<p style="text-align: center;"><?php VikBookingIcons::e('circle-notch', 'fa-spin fa-fw'); ?></p>');
// load data
vboWidgetCurrConvExchange(wrapper);
}
</script>
<?php
}
?>
<script type="text/javascript">
jQuery(function() {
// render select2
jQuery('#<?php echo $wrapper_id; ?>').find('.vbo-widget-currconv-sel').select2({
width: "200px",
});
});
</script>
<?php
}
}