// ==UserScript==
// @name        SteamHistoryLowestPrice
// @namespace   [email protected]
// @description 显示游戏在各种商店中当前和历史最低价格及进包次数
// @include     /^https?:\/\/store\.steampowered\.com\/(app|sub|bundle)\/\d+/
// @license     GPL version 3 or any later version
// @version     2017-7-8
// @grant       GM_xmlhttpRequest
// jshint esversion:6
// ==/UserScript==
// 显示样式
// 0 = 显示在购买按钮上面
// 1 = 显示在购买信息框上面
const INFO_STYLE = 0;
// 货币区域覆盖，两个字母的国家代号,大小写均可
// 空字符（""）代表不覆盖，使用steam的cookie中steamCountry的值
// 见 https://zh.wikipedia.org/wiki/ISO_3166-1 或 https://en.wikipedia.org/wiki/ISO_3166-1
// 常用 美国USD:"us", ##CNY: "cn", 英国GBP: "uk", 日本JPY: "jp", 俄国RUS: "ru"
const CC_OVERRIDE = "";
// 货币符号
const CURRENCY_SYMBOLS = {
'AED': 'DH',
'AUD': 'A$',
'BRL': 'R$',
'CAD': 'CDN$',
'CHF': 'CHF',
'CLP': 'CLP$',
'CNY': '¥',  // Chines Yuan
'COP': 'COL$',
'CRC': '₡',    // Costa Rican Colón
'EUR': '€',    // Euro
'GBP': '£',    // British Pound Sterling
'HKD': 'HK$',
'IDR': 'Rp',
'ILS': '₪',    // Israeli New Sheqel
'INR': '₹',    // Indian Rupee
'JPY': '¥',    // Japanese Yen
'KRW': '₩',    // South Korean Won
'MXN': 'Mex$',
'MYR': 'RM',
'NGN': '₦',    // Nigerian Naira
'NOK': 'kr',
'NZD': 'NZ$',
'PEN': 'S/.',
'PHP': '₱',    // Philippine Peso
'PLN': 'zł',   // Polish Zloty
'PYG': '₲',    // Paraguayan Guarani
'RUB': 'pуб',
'SAR': 'SR',
'SGD': 'S$',
'THB': '฿',    // Thai Baht
'TRY': 'TL',
'TWD': 'NT$',
'UAH': '₴',    // Ukrainian Hryvnia
'USD': '$',    // US Dollar
'VND': '₫',    // Vietnamese Dong
'ZAR': 'R ',
};
// 查询历史低价包括的商店
const STORES = [
"steam",
"amazonus",
"impulse",
"gamersgate",
"direct2drive",
"origin",
"uplay",
"indiegalastore",
"gamesplanet",
"indiegamestand",
"gog",
"nuuvem",
"dlgamer",
"humblestore",
"squenix",
"bundlestars",
"fireflower",
"humblewidgets",
"newegg",
"coinplay",
"wingamestore",
"macgamestore",
"gamebillet",
"silagames",
"itchio",
"gamejolt",
"paradox"
];
// 在app页和愿望单页显示史低价格
let urlMatch = location.href.match(/(app|sub|bundle)\/(\d+)/);
let appId = "";
let type = "";
let subIds = [];
if(urlMatch && urlMatch.length == 3){
type = urlMatch[1]
appId = urlMatch[2];
}
// console.log('[史低]: ' + type + ' : ' + appId + ', requesting data info...'); // DEBUG
// 获取subs
document.querySelectorAll("input[name=subid]")
.forEach(sub=>subIds.push(sub.value));
let cc = "cn";
if(CC_OVERRIDE.length > 0){
// 使用覆盖的货币区域
cc = CC_OVERRIDE;
} else {
// 使用默认的的货币区域
let ccMatch = document.cookie.match(/steamCountry=([a-z]{2})/i);
if (ccMatch !== null && ccMatch.length == 2) {
cc = ccMatch[1];
}
}
AddLowestPriceTag(appId, type, subIds, STORES.join(","), cc, location.protocol);
// 在商店页添加史低信息
async function AddLowestPriceTag(appId, type = "app", subIds = [], stores = "steam", cc = "cn", protocol = "https"){
// 史低信息容器们
let lowestPriceNodes = {};
// 统计subid
let findSubIds = [];
if(type == "bundle"){
// bundle就一个, 视作subid
findSubIds.push(appId);
} else if (type == "app" || type == "sub"){
// app/sub 可能有好多
findSubIds = subIds.slice();
}
// 寻找每一个subid的购买按钮，生成史低信息容器们
findSubIds.forEach(subId => {
let gameWrapper = null;
try{
gameWrapper = document.querySelector('.game_area_purchase_game input[value="' + subId + '"]');
switch (INFO_STYLE){
case 0:
gameWrapper = gameWrapper.parentNode.parentNode.querySelector('.game_purchase_action');
break;
case 1:
gameWrapper = gameWrapper.parentNode.parentNode.parentNode;
break;
}
} catch (ex) {
gameWrapper = null;
}
if(gameWrapper){
let lowestInfo = document.createElement("div");
lowestInfo.className = "game_lowest_price";
lowestInfo.innerText = "正在读取历史最低价格...";
if(INFO_STYLE == 1){
lowestInfo.style.background = 'linear-gradient(to right, rgba(0,0,0,0.3) 0%,rgba(0,0,0,0.2) 100%)';
}
gameWrapper.prepend(lowestInfo);
lowestPriceNodes[subId] = lowestInfo;
}
});
// 获取sub们的数据
let data = null;
try {
data = JSON.parse( await GettingSteamDBAppInfo(appId, type, subIds, stores, cc, protocol) );
} catch (err) {
console.log('[史低]: ' + err);
}
// console.log('[史低]: app ' + appId + ' data : %o', data); // DEBUG
// 解析data
let appInfos = [];
let metaInfo = data ? data[".meta"] : null;
// 如果是bundle， 除了.meta外只有一个bundle/xxx，否则是一大堆xxx
if(type == "bundle"){
appInfos.push({Id:appId, Info:data["bundle/" + appId]});
} else if(type == "app" || type == "sub"){
for(let key in data){
if(!isNaN(key)){
appInfos.push({Id:key, Info:data[key]});
}
}
}
// console.log('[史低]: app ' + appId + ' metaInfo: %o', metaInfo); // DEBUG
// console.log('[史低]: app ' + appId + ' appInfos: %o', appInfos); // DEBUG
// 如果查到info，塞到购买按钮上面去
if(metaInfo && appInfos.length > 0){
// 获取整体信息
let currencySymbol = metaInfo.currency in CURRENCY_SYMBOLS
? CURRENCY_SYMBOLS[metaInfo.currency]
: metaInfo.currency;
// 为每一个sub或bundle添加史低
appInfos.forEach( app => {
let lowestInfo = lowestPriceNodes[app.Id];
if(lowestInfo){
lowestInfo.innerHTML =
// 历史最低
'历史最低价是 '
+ '<span style="cursor:help;text-decoration:underline;" title="' + app.Info.lowest.recorded_formatted + '">'
+ new Date(app.Info.lowest.recorded * 1e3).toLocaleDateString()
+ '</span>&nbsp;时在&nbsp;'
+ '<a target="_blank" href="' + app.Info.lowest.url + '"> '
+ app.Info.lowest.store
+ '</a>&nbsp;中的&nbsp;'
+ '<span class="discount_pct">-' + app.Info.lowest.cut + '%</span>'
+ '<a target="_blank" title="查看价格历史" href="' + app.Info.urls.history + '"> '
+ currencySymbol + ' ' + app.Info.lowest.price
+ '</a>'
// 第二行
+ '<br />'
// 进包次数
+ '进包&nbsp;<a target="_blank" title="查看进包信息"  href="' + app.Info.urls.bundles + '"'
+ (app.Info.bundles && app.Info.bundles.live.length > 0
? ' style="color:#0d0" title="' + app.Info.bundles.live.length + ' 个正在销售的慈善包"'
: '')
+'> '
+ app.Info.bundles.count
+ ' </a>&nbsp;次，'
// 当前最低
+ (app.Info.price.price <= app.Info.lowest.price
? '<span class="game_purchase_discount_countdown">当前为历史最低价</span>，'
: '<span>当前最低价是</span>' )
+ '在&nbsp;'
+ '<a target="_blank" href="' + app.Info.price.url + '"> '
+ app.Info.price.store
+ '</a>&nbsp;中的&nbsp;'
+ '<span class="discount_pct">-' + app.Info.price.cut + '%</span>'
+ '<a target="_blank" title="查看价格信息"  href="' + app.Info.urls.info + '"> '
+ currencySymbol + ' ' + app.Info.price.price
+ '</a>';
}
});
} else {
// metaInfo为空，或者appInfos无内容
console.log('[史低]: get lowest price failed, data = %o', data);
for(let id in lowestPriceNodes){
lowestPriceNodes[id].innerHTML = "";
}
}
// 返回史低info
return Promise.resolve(lowestPriceNodes);
}
// 获取史低信息
async function GettingSteamDBAppInfo(appId, type = "app", subIds = [], stores = "steam", cc = "cn", protocol = "https"){
let requestPromise = null;
let bundleId = "";
if(type == "bundle"){
bundleId = appId;
}
if(!isNaN(appId) && parseInt(appId) > 0){
let requestUrl = protocol + "//api.enhancedsteam.com/pricev3/?"
+ "bundleid=" + bundleId
+ "&subs=" + subIds.join(',')
+ "&appid=" + appId
+ "&stores=" + stores
+ "&cc=" + cc;
// console.log('[史低]: requestUrl: ' + requestUrl); // DEBUG
requestPromise = new Promise( (resolve, reject) => {
GM_xmlhttpRequest({
method: "GET",
url: requestUrl,
onload: function (response) {
resolve(response.response);
},
onerror: function (error) {
reject(error);
}
});
});
} else {
requestPromise = Promise.reject("Invalid appid");
}
return requestPromise;
}