vikbooking / admin / helpers / widgets / currency_converter.php

currency_converter.php in VikBooking Hotel Booking Engine & PMS 1.6.6, at admin/helpers/widgets/currency_converter.php

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1	<?php
2	/**
3	* @package VikBooking
4	* @subpackage com_vikbooking
5	* @author Alessio Gaggii - E4J srl
6	* @copyright Copyright (C) 2022 E4J srl. All rights reserved.
7	* @license GNU General Public License version 2 or later; see LICENSE
8	* @link https://vikwp.com
9	*/
10
11	defined('ABSPATH') or die('No script kiddies please!');
12
13	/**
14	* Class handler for admin widget "currency converter".
15	*
16	* @since 1.15.4 (J) - 1.5.10 (WP)
17	*/
18	class VikBookingAdminWidgetCurrencyConverter extends VikBookingAdminWidget
19	{
20	/**
21	* The instance counter of this widget.
22	*
23	* @var int
24	*/
25	protected static $instance_counter = -1;
26
27	/**
28	* Class constructor will define the widget name and identifier.
29	*/
30	public function __construct()
31	{
32	// call parent constructor
33	parent::__construct();
34
35	$this->widgetName = JText::translate('VBO_W_CURRCONV_TITLE');
36	$this->widgetDescr = JText::translate('VBO_W_CURRCONV_DESCR');
37	$this->widgetId = basename(__FILE__, '.php');
38
39	// define widget and icon and style name
40	$this->widgetIcon = '<i class="' . VikBookingIcons::i('funnel-dollar') . '"></i>';
41	$this->widgetStyleName = 'violet';
42
43	// load widget's settings
44	$this->widgetSettings = $this->loadSettings();
45	if (!is_object($this->widgetSettings)) {
46	$this->widgetSettings = new stdClass;
47	}
48	}
49
50	/**
51	* Custom method for this widget only to exchange the rates between currencies.
52	* The method is called by the admin controller through an AJAX request.
53	* The visibility should be public, it should not exit the process, and
54	* any content sent to output will be returned to the AJAX response.
55	* In this case we return an array because this method requires "return":1.
56	*
57	* It's the actual rendering of the widget.
58	*/
59	public function exchangeRates()
60	{
61	$wrapper = VikRequest::getString('wrapper', '', 'request');
62
63	$from_currency = VikRequest::getString('from_currency', '', 'request');
64	$to_currency = VikRequest::getString('to_currency', '', 'request');
65	$amount = VikRequest::getFloat('amount', 1, 'request');
66
67	if (empty($from_currency) \|\| empty($to_currency)) {
68	// use the website default currency
69	$from_currency = VikBooking::getCurrencyName();
70
71	// use the default to currency
72	$to_currency = !strcasecmp($from_currency, 'EUR') ? 'USD' : 'EUR';
73	}
74
75	if ($amount <= 0) {
76	$amount = 1;
77	}
78
79	// import currency converter class
80	VikBooking::import('currencyconverter');
81
82	// get numbering format data
83	$format = VikBooking::getNumberFormatData();
84
85	// get the instance of the converter object
86	$converter = new VboCurrencyConverter($from_currency, $to_currency, [$amount], explode(':', $format));
87
88	// collect values
89	$converter_error = null;
90	$exchanged = null;
91	$exchange_rate = null;
92
93	// make sure from currency is supported for conversion
94	if (!$converter->currencyExists($from_currency)) {
95	$converter_error = sprintf('Currency %s is not supported', $from_currency);
96	} elseif (!$converter->currencyExists($to_currency)) {
97	$converter_error = sprintf('Currency %s is not supported', $to_currency);
98	}
99
100	if (!$converter_error) {
101	// exchange the given rates
102	$exchanged = $converter->convert($get_floats = true);
103	}
104
105	if (!$converter_error && (!is_array($exchanged) \|\| !count($exchanged))) {
106	// something went wrong during the conversion
107	$converter_error = $converter->getError();
108	$converter_error = empty($converter_error) ? 'Error while converting rates' : $converter_error;
109	} else {
110	// get the conversion rate
111	$exchange_rate = $converter->getConversionRate();
112
113	// update widget's settings with the lastly used currencies
114	$this->widgetSettings->from_currency = $from_currency;
115	$this->widgetSettings->to_currency = $to_currency;
116	$this->updateSettings(json_encode($this->widgetSettings));
117	}
118
119	// start output buffering
120	ob_start();
121
122	?>
123	<div class="vbo-widget-currconv-result-data">
124	<?php
125	if ($converter_error \|\| empty($exchanged)) {
126	?>
127	<p class="err"><?php echo $converter_error; ?></p>
128	<?php
129	} else {
130	?>
131	<p class="info"><?php echo JText::sprintf('VBO_CONV_RES_OTA_CURRENCY_EXC', $from_currency . ' ' . $amount, $to_currency . ' ' . $exchanged[0]); ?></p>
132	<p class="info"><?php echo JText::translate('VBO_CONV_RATE'); ?> <span class="badge badge-primary"><?php echo $exchange_rate; ?></span></p>
133	<?php
134	}
135	?>
136	</div>
137	<?php
138
139	// get the HTML buffer
140	$html_content = ob_get_contents();
141	ob_end_clean();
142
143	// return an associative array of values
144	return [
145	'html' => $html_content,
146	'exchanged' => $exchanged,
147	'exchange_rate' => $exchange_rate,
148	];
149	}
150
151	/**
152	* Preload the necessary CSS/JS assets.
153	*
154	* @return void
155	*/
156	public function preload()
157	{
158	// load assets
159	$this->vbo_app->loadSelect2();
160	}
161
162	public function render(VBOMultitaskData $data = null)
163	{
164	// increase widget's instance counter
165	static::$instance_counter++;
166
167	// check whether the widget is being rendered via AJAX when adding it through the customizer
168	$is_ajax = $this->isAjaxRendering();
169
170	// generate a unique ID for the sticky notes wrapper instance
171	$wrapper_instance = !$is_ajax ? static::$instance_counter : rand();
172	$wrapper_id = 'vbo-widget-currconv-' . $wrapper_instance;
173
174	// import currency converter class
175	if (!VikBooking::import('currencyconverter')) {
176	// display nothing
177	return;
178	}
179
180	// the website default currency
181	$def_currency = !empty($this->widgetSettings->from_currency) ? $this->widgetSettings->from_currency : VikBooking::getCurrencyName();
182
183	// the default to currency
184	$def_to_currency = !strcasecmp($def_currency, 'EUR') ? 'USD' : 'EUR';
185	if (!empty($this->widgetSettings->to_currency)) {
186	$def_to_currency = $this->widgetSettings->to_currency;
187	}
188
189	// get numbering format data
190	$format = VikBooking::getNumberFormatData();
191
192	// get the instance of the converter object
193	$converter = new VboCurrencyConverter($def_currency, $def_to_currency, [1], explode(':', $format));
194
195	// grab all currency names
196	$all_currencies = $converter->getCurrencyNames();
197
198	?>
199	<div class="vbo-admin-widget-wrapper">
200	<div class="vbo-admin-widget-head">
201	<h4><?php echo $this->widgetIcon; ?> <span><?php echo $this->widgetName; ?></span></h4>
202	</div>
203	<div id="<?php echo $wrapper_id; ?>" class="vbo-widget-currconv-wrap" data-instance="<?php echo $wrapper_instance; ?>">
204	<div class="vbo-widget-currconv-filters">
205	<div class="vbo-widget-currconv-filters-main">
206	<div class="vbo-widget-currconv-filter vbo-widget-currconv-filter-from">
207	<label for="vbo-widget-currconv-from-<?php echo $wrapper_instance; ?>"><?php echo JText::translate('VBO_CONV_FROM'); ?></label>
208	<select id="vbo-widget-currconv-from-<?php echo $wrapper_instance; ?>" class="vbo-widget-currconv-sel vbo-widget-currconv-from">
209	<?php
210	foreach ($all_currencies as $code => $name) {
211	?>
212	<option value="<?php echo $code; ?>"<?php echo !strcasecmp($def_currency, $code) ? ' selected="selected"' : ''; ?>><?php echo $name; ?></option>
213	<?php
214	}
215	?>
216	</select>
217	</div>
218	<div class="vbo-widget-currconv-filter vbo-widget-currconv-filter-amount">
219	<label for="vbo-widget-currconv-amount-<?php echo $wrapper_instance; ?>"><?php echo JText::translate('VBPSHOWSEASONSFOUR'); ?></label>
220	<input type="number" id="vbo-widget-currconv-amount-<?php echo $wrapper_instance; ?>" class="vbo-widget-currconv-amount" min="0.01" step="any" value="1" />
221	</div>
222	</div>
223	<div class="vbo-widget-currconv-filters-secondary">
224	<div class="vbo-widget-currconv-filter vbo-widget-currconv-filter-to">
225	<label for="vbo-widget-currconv-to-<?php echo $wrapper_instance; ?>"><?php echo JText::translate('VBO_CONV_TO'); ?></label>
226	<select id="vbo-widget-currconv-to-<?php echo $wrapper_instance; ?>" class="vbo-widget-currconv-sel vbo-widget-currconv-to">
227	<?php
228	foreach ($all_currencies as $code => $name) {
229	?>
230	<option value="<?php echo $code; ?>"<?php echo !strcasecmp($def_to_currency, $code) ? ' selected="selected"' : ''; ?>><?php echo $name; ?></option>
231	<?php
232	}
233	?>
234	</select>
235	</div>
236	</div>
237	<div class="vbo-widget-currconv-filters-submit">
238	<div class="vbo-widget-currconv-filter vbo-widget-currconv-filter-submit">
239	<button type="button" class="btn vbo-config-btn" onclick="vboWidgetCurrConvCalc('<?php echo $wrapper_id; ?>');"><?php VikBookingIcons::e('exchange-alt'); ?><?php echo JText::translate('VBRATESOVWRATESCALCULATORCALC'); ?></button>
240	</div>
241	</div>
242	</div>
243	<div class="vbo-widget-currconv-result"></div>
244	</div>
245	</div>
246	<?php
247
248	if (static::$instance_counter === 0 \|\| $is_ajax) {
249	/**
250	* Print the JS code only once for all instances of this widget.
251	* The real rendering is made through AJAX, not when the page loads.
252	*/
253	?>
254
255	<script type="text/javascript">
256
257	/**
258	* Perform the request to exchange rates.
259	*/
260	function vboWidgetCurrConvExchange(wrapper) {
261	var widget_instance = jQuery('#' + wrapper);
262	if (!widget_instance.length) {
263	return false;
264	}
265
266	// get vars for making the request
267	var from_currency = widget_instance.find('.vbo-widget-currconv-from').val();
268	var to_currency = widget_instance.find('.vbo-widget-currconv-to').val();
269	var amount = widget_instance.find('.vbo-widget-currconv-amount').val();
270
271	// the widget method to call
272	var call_method = 'exchangeRates';
273
274	// make a request to load the available room rates
275	VBOCore.doAjax(
276	"<?php echo $this->getExecWidgetAjaxUri(); ?>",
277	{
278	widget_id: "<?php echo $this->getIdentifier(); ?>",
279	call: call_method,
280	return: 1,
281	from_currency: from_currency,
282	to_currency: to_currency,
283	amount: amount,
284	tmpl: "component"
285	},
286	function(response) {
287	try {
288	var obj_res = typeof response === 'string' ? JSON.parse(response) : response;
289	if (!obj_res.hasOwnProperty(call_method) \|\| !obj_res[call_method]) {
290	console.error('Unexpected JSON response', obj_res);
291	return false;
292	}
293
294	// replace HTML with exchange rates
295	widget_instance.find('.vbo-widget-currconv-result').html(obj_res[call_method]['html']);
296	} catch(err) {
297	console.error('could not parse JSON response', err, response);
298	}
299	},
300	function(error) {
301	// empty result container
302	widget_instance.find('.vbo-widget-currconv-result').html('');
303	console.error(error);
304	}
305	);
306	}
307
308	/**
309	* Calculate the exchange rates.
310	*/
311	function vboWidgetCurrConvCalc(wrapper) {
312	var widget_instance = jQuery('#' + wrapper);
313	if (!widget_instance.length) {
314	return false;
315	}
316
317	// show loading spinner
318	widget_instance.find('.vbo-widget-currconv-result').html('<p style="text-align: center;"><?php VikBookingIcons::e('circle-notch', 'fa-spin fa-fw') ?></p>');
319
320	// load data
321	vboWidgetCurrConvExchange(wrapper);
322	}
323
324	</script>
325	<?php
326	}
327	?>
328
329	<script type="text/javascript">
330
331	jQuery(function() {
332
333	// render select2
334	jQuery('#<?php echo $wrapper_id; ?>').find('.vbo-widget-currconv-sel').select2({
335	width: "200px",
336	});
337
338	});
339
340	</script>
341
342	<?php
343	}
344	}
345