// ==UserScript==
// @name           Mandarake yen converter
// @namespace      pendevin
// @description    Converts prices from yen to dollars on mandarake
// @include        http://order.mandarake.co.jp/*
// @include        https://order.mandarake.co.jp/*
// @version        1.2
// @grant          GM_xmlhttpRequest
// @grant          GM_setValue
// @grant          GM_getValue
// @require        http://code.jquery.com/jquery-2.1.3.min.js
// ==/UserScript==
//mayb mandarake uses jquery idk
this.$ = this.jQuery = jQuery.noConflict(true);
//greasemonkey friendly ajax. requires @grant GM_xmlhttpRequest and jquery
var XHR = {
//sends the XHR request then parses the json and runs callback on the returned object.
json: function(url, callback, optional) {
if (optional == undefined) {
optional = null;
}
GM_xmlhttpRequest({
method: 'GET',
url: url,
onload: function(r) {
callback($.parseJSON(r.responseText), optional);
}
});
}
};
//adds a style to a document and returns the style object *JQUERY
//css is a string, id is an optional string that determines the object's id
function addStyle(css, id) {
//create a style
var style = $('<style type="text/css">');
//add the css data to it
style.html(css);
if (id) {
//remove any style that has our id
$('#' + id).remove();
//give our style the id after removing the other stuff. idk if it matters, but i'm too lazy to find out
style.attr('id', id);
}
//add the style into the head
$('head').append(style);
//we're outta here
return style;
}
var css = "\
.convertedPrice{\
font-size:13px!important;\
font-weight:bold;\
}\
";
addStyle(css);
//actually converts the prices and adds them to our page
function applyConversions() {
//multiply by the magic number
$(jpys).each(function(i, jpy) {
usds.push((jpy * conversion).toFixed(2));
});
//insert our conversions
prices.each(function(i, price) {
$(price).append('<span class="convertedPrice"> ($' + usds[i] + ')</span>');
});
}
//find our prices
var jpys = [];
//grab both the main list price and also all the extra prices on the page
var prices = $('dt:contains(販売価格) + dd > p, dt:contains(Price) + dd > p, div.price > p');
prices.each(function(i, product) {
var price = $(product).text();
//hopefully this consistently gets rid of all that whitespace plus the extra text
price = parseInt(price.match(/([\d\,]+)\s?(yen|円)/)[1].replace(',', ''));
jpys.push(price);
});
//get conversion rate
var conversion = parseFloat(GM_getValue('conversion', '.01'));
var now = Date.now();
var conversionDate = parseInt(GM_getValue('date', Date.now() - 30 * 60 * 1000 - 1));
var usds = [];
//only grab a new conversion rate every 30 minutes so we don't get banned
if (conversionDate + 30 * 60 * 1000 < now) {
XHR.json('http://free.currencyconverterapi.com/api/v3/convert?q=USD_JPY&compact=ultra', function(r) {
conversion = 1 / r["USD_JPY"];
//save our conversion data
GM_setValue('conversion', conversion);
GM_setValue('date', now);
//insert our conversions
applyConversions();
});
}
//using a known conversion rate
else {
//insert our conversions
applyConversions();
}