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$(function() {
"use strict";
// mergedHead will be turned to true the first time we receive something from a new host
// It allows to transform the <head> only once
var mergedHead = false;
var current_client_url = "";
function longpolling() {
$.ajax({
type: 'POST',
url: window.location.origin + '/point_of_sale/get_serialized_order/' + display_identifier,
dataType: 'json',
beforeSend: function(xhr){xhr.setRequestHeader('Content-Type', 'application/json');},
data: JSON.stringify({jsonrpc: '2.0'}),
success: function(data) {
if (data.result.error) {
$('.error-message').text(data.result.error);
$('.error-message').removeClass('d-none');
setTimeout(longpolling, 5000);
return;
}
if (data.result.rendered_html) {
var trimmed = $.trim(data.result.rendered_html);
var $parsedHTML = $('<div>').html($.parseHTML(trimmed,true)); // WARNING: the true here will executes any script present in the string to parse
var new_client_url = $parsedHTML.find(".resources > base").attr('href');
if (!mergedHead || (current_client_url !== new_client_url)) {
mergedHead = true;
current_client_url = new_client_url;
$("head").children().not('.origin').remove();
$("head").append($parsedHTML.find(".resources").html());
}
$(".container-fluid").html($parsedHTML.find('.pos-customer_facing_display').html());
$(".container-fluid").attr('class', 'container-fluid').addClass($parsedHTML.find('.pos-customer_facing_display').attr('class'));
var d = $('.pos_orderlines_list');
d.scrollTop(d.prop("scrollHeight"));
// Here we execute the code coming from the pos, apparently $.parseHTML() executes scripts right away,
// Since we modify the dom afterwards, the script might not have any effect
if (typeof foreign_js !== 'undefined' && $.isFunction(foreign_js)) {
foreign_js();
}
}
longpolling();
},
error: function (jqXHR, status, err) {
setTimeout(longpolling, 5000);
},
timeout: 30000,
});
};
longpolling();
});
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