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SteamHistoryLowestPrice

显示游戏在各种商店中当前和历史最低价格及进包次数

  1. // ==UserScript==
  2. // @name        SteamHistoryLowestPrice
  3. // @namespace   SteamHistoryLowestPrice@Byzod.user.js
  4. // @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
  5. // @include     /^https?:\/\/store\.steampowered\.com\/(app|sub|bundle)\/\d+/
  6. // @license     GPL version 3 or any later version
  7. // @version     2017-7-8
  8. // @grant       GM_xmlhttpRequest
  9. // jshint esversion:6
  10. // ==/UserScript==
  11.  
  12. // 显示样式
  13. // 0 = 显示在购买按钮上面
  14. // 1 = 显示在购买信息框上面
  15. const INFO_STYLE = 0;
  16.  
  17. // 货币区域覆盖，两个字母的国家代号,大小写均可
  18. // 空字符（""）代表不覆盖，使用steam的cookie中steamCountry的值
  19. // 见 https://zh.wikipedia.org/wiki/ISO_3166-1 或 https://en.wikipedia.org/wiki/ISO_3166-1
  20. // 常用 美国USD:"us", 中国CNY: "cn", 英国GBP: "uk", 日本JPY: "jp", 俄国RUS: "ru"
  21. const CC_OVERRIDE = "";
  22.  
  23. // 货币符号
  24. const CURRENCY_SYMBOLS = {
  25. 	'AED': 'DH',
  26. 	'AUD': 'A$',
  27. 	'BRL': 'R$',
  28. 	'CAD': 'CDN$',
  29. 	'CHF': 'CHF',
  30. 	'CLP': 'CLP$',
  31. 	'CNY': '¥',  // Chines Yuan
  32. 	'COP': 'COL$',
  33. 	'CRC': '₡',    // Costa Rican Colón
  34. 	'EUR': '€',    // Euro
  35. 	'GBP': '£',    // British Pound Sterling
  36. 	'HKD': 'HK$',
  37. 	'IDR': 'Rp',
  38. 	'ILS': '₪',    // Israeli New Sheqel
  39. 	'INR': '₹',    // Indian Rupee
  40. 	'JPY': '¥',    // Japanese Yen
  41. 	'KRW': '₩',    // South Korean Won
  42. 	'MXN': 'Mex$',
  43. 	'MYR': 'RM',
  44. 	'NGN': '₦',    // Nigerian Naira
  45. 	'NOK': 'kr',
  46. 	'NZD': 'NZ$',
  47. 	'PEN': 'S/.',
  48. 	'PHP': '₱',    // Philippine Peso
  49. 	'PLN': 'zł',   // Polish Zloty
  50. 	'PYG': '₲',    // Paraguayan Guarani
  51. 	'RUB': 'pуб',
  52. 	'SAR': 'SR',
  53. 	'SGD': 'S$',
  54. 	'THB': '฿',    // Thai Baht
  55. 	'TRY': 'TL',
  56. 	'TWD': 'NT$',
  57. 	'UAH': '₴',    // Ukrainian Hryvnia
  58. 	'USD': '$',    // US Dollar
  59. 	'VND': '₫',    // Vietnamese Dong
  60. 	'ZAR': 'R ',
  61. };
  62.  
  63. // 查询历史低价包括的商店
  64. const STORES = [
  65. 	"steam",
  66. 	"amazonus",
  67. 	"impulse",
  68. 	"gamersgate",
  69. 	"direct2drive",
  70. 	"origin",
  71. 	"uplay",
  72. 	"indiegalastore",
  73. 	"gamesplanet",
  74. 	"indiegamestand",
  75. 	"gog",
  76. 	"nuuvem",
  77. 	"dlgamer",
  78. 	"humblestore",
  79. 	"squenix",
  80. 	"bundlestars",
  81. 	"fireflower",
  82. 	"humblewidgets",
  83. 	"newegg",
  84. 	"coinplay",
  85. 	"wingamestore",
  86. 	"macgamestore",
  87. 	"gamebillet",
  88. 	"silagames",
  89. 	"itchio",
  90. 	"gamejolt",
  91. 	"paradox"
  92. ];
  93.  
  94.  
  95. 	// 在app页和愿望单页显示史低价格
  96. 	let urlMatch = location.href.match(/(app|sub|bundle)\/(\d+)/);
  97. 	let appId = "";
  98. 	let type = "";
  99. 	let subIds = [];
  100. 	if(urlMatch && urlMatch.length == 3){
  101. 		type = urlMatch[1]
  102. 		appId = urlMatch[2];
  103. 	}
  104. 	
  105. 	// console.log('[史低]: ' + type + ' : ' + appId + ', requesting data info...'); // DEBUG
  106. 	
  107. 	// 获取subs
  108. 	document.querySelectorAll("input[name=subid]")
  109. 		.forEach(sub=>subIds.push(sub.value));
  110. 	
  111. 	let cc = "cn";
  112. 	if(CC_OVERRIDE.length > 0){
  113. 		// 使用覆盖的货币区域
  114. 		cc = CC_OVERRIDE;
  115. 	} else {
  116. 		// 使用默认的的货币区域
  117. 		let ccMatch = document.cookie.match(/steamCountry=([a-z]{2})/i);
  118. 		if (ccMatch !== null && ccMatch.length == 2) {
  119. 			cc = ccMatch[1];
  120. 		}
  121. 	}
  122. 	
  123. 	AddLowestPriceTag(appId, type, subIds, STORES.join(","), cc, location.protocol);
  124. 	
  125. 	// 在商店页添加史低信息
  126. 	async function AddLowestPriceTag(appId, type = "app", subIds = [], stores = "steam", cc = "cn", protocol = "https"){
  127. 		// 史低信息容器们
  128. 		let lowestPriceNodes = {};
  129. 		
  130. 		// 统计subid
  131. 		let findSubIds = [];
  132. 		if(type == "bundle"){
  133. 			// bundle就一个, 视作subid
  134. 			findSubIds.push(appId);
  135. 		} else if (type == "app" || type == "sub"){
  136. 			// app/sub 可能有好多
  137. 			findSubIds = subIds.slice();
  138. 		}
  139. 		
  140. 		// 寻找每一个subid的购买按钮，生成史低信息容器们
  141. 		findSubIds.forEach(subId => {
  142. 			let gameWrapper = null;
  143. 			try{
  144. 				gameWrapper = document.querySelector('.game_area_purchase_game input[value="' + subId + '"]');
  145. 				switch (INFO_STYLE){
  146. 					case 0:
  147. 						gameWrapper = gameWrapper.parentNode.parentNode.querySelector('.game_purchase_action');
  148. 						break;
  149. 					case 1:
  150. 						gameWrapper = gameWrapper.parentNode.parentNode.parentNode;
  151. 						break;
  152. 				}
  153. 			} catch (ex) {
  154. 				gameWrapper = null;
  155. 			}
  156. 			if(gameWrapper){
  157. 				let lowestInfo = document.createElement("div");
  158. 				lowestInfo.className = "game_lowest_price";
  159. 				lowestInfo.innerText = "正在读取历史最低价格...";
  160. 				if(INFO_STYLE == 1){
  161. 					lowestInfo.style.background = 'linear-gradient(to right, rgba(0,0,0,0.3) 0%,rgba(0,0,0,0.2) 100%)';
  162. 				}
  163. 				gameWrapper.prepend(lowestInfo);
  164. 				lowestPriceNodes[subId] = lowestInfo;
  165. 			}
  166. 		});
  167. 		
  168. 		// 获取sub们的数据
  169. 		let data = null;
  170. 		try {
  171. 			data = JSON.parse( await GettingSteamDBAppInfo(appId, type, subIds, stores, cc, protocol) );
  172. 		} catch (err) {
  173. 			console.log('[史低]: ' + err);
  174. 		}
  175. 		
  176. 		// console.log('[史低]: app ' + appId + ' data : %o', data); // DEBUG
  177. 		
  178. 		// 解析data
  179. 		let appInfos = [];
  180. 		let metaInfo = data ? data[".meta"] : null;
  181. 		// 如果是bundle， 除了.meta外只有一个bundle/xxx，否则是一大堆xxx
  182. 		if(type == "bundle"){
  183. 			appInfos.push({Id:appId, Info:data["bundle/" + appId]});
  184. 		} else if(type == "app" || type == "sub"){
  185. 			for(let key in data){
  186. 				if(!isNaN(key)){
  187. 					appInfos.push({Id:key, Info:data[key]});
  188. 				}
  189. 			}
  190. 		}
  191. 		// console.log('[史低]: app ' + appId + ' metaInfo: %o', metaInfo); // DEBUG
  192. 		// console.log('[史低]: app ' + appId + ' appInfos: %o', appInfos); // DEBUG
  193. 		
  194. 		// 如果查到info，塞到购买按钮上面去
  195. 		if(metaInfo && appInfos.length > 0){
  196. 			// 获取整体信息
  197. 			let currencySymbol = metaInfo.currency in CURRENCY_SYMBOLS 
  198. 				? CURRENCY_SYMBOLS[metaInfo.currency] 
  199. 				: metaInfo.currency;
  200. 			
  201. 			// 为每一个sub或bundle添加史低
  202. 			appInfos.forEach( app => {
  203. 				let lowestInfo = lowestPriceNodes[app.Id];
  204. 				
  205. 				if(lowestInfo){
  206. 					lowestInfo.innerHTML = 
  207. 						// 历史最低
  208. 						'历史最低价是 '
  209. 						+ '<span style="cursor:help;text-decoration:underline;" title="' + app.Info.lowest.recorded_formatted + '">'
  210. 							+ new Date(app.Info.lowest.recorded * 1e3).toLocaleDateString()
  211. 						+ '</span>&nbsp;时在&nbsp;'
  212. 						+ '<a target="_blank" href="' + app.Info.lowest.url + '"> '
  213. 							+ app.Info.lowest.store
  214. 						+ '</a>&nbsp;中的&nbsp;'
  215. 						+ '<span class="discount_pct">-' + app.Info.lowest.cut + '%</span>'
  216. 						+ '<a target="_blank" title="查看价格历史" href="' + app.Info.urls.history + '"> '
  217. 							+ currencySymbol + ' ' + app.Info.lowest.price
  218. 						+ '</a>'
  219.  
  220. 						// 第二行
  221. 						+ '<br />'
  222.  
  223. 						// 进包次数
  224. 						+ '进包&nbsp;<a target="_blank" title="查看进包信息"  href="' + app.Info.urls.bundles + '"'
  225. 							+ (app.Info.bundles && app.Info.bundles.live.length > 0
  226. 								? ' style="color:#0d0" title="' + app.Info.bundles.live.length + ' 个正在销售的慈善包"'
  227. 								: '')
  228. 							+'> ' 
  229. 							+ app.Info.bundles.count
  230. 						+ ' </a>&nbsp;次，'
  231.  
  232. 						// 当前最低
  233. 						+ (app.Info.price.price <= app.Info.lowest.price
  234. 							? '<span class="game_purchase_discount_countdown">当前为历史最低价</span>，'
  235. 							: '<span>当前最低价是</span>' )
  236. 						+ '在&nbsp;'
  237. 						+ '<a target="_blank" href="' + app.Info.price.url + '"> '
  238. 							+ app.Info.price.store
  239. 						+ '</a>&nbsp;中的&nbsp;'
  240. 						+ '<span class="discount_pct">-' + app.Info.price.cut + '%</span>'
  241. 						+ '<a target="_blank" title="查看价格信息"  href="' + app.Info.urls.info + '"> '
  242. 							+ currencySymbol + ' ' + app.Info.price.price
  243. 						+ '</a>';
  244. 				}
  245. 			});
  246. 		} else {
  247. 			// metaInfo为空，或者appInfos无内容
  248. 			console.log('[史低]: get lowest price failed, data = %o', data);
  249. 			for(let id in lowestPriceNodes){
  250. 				lowestPriceNodes[id].innerHTML = "";
  251. 			}
  252. 		}
  253. 		
  254. 		// 返回史低info
  255. 		return Promise.resolve(lowestPriceNodes);
  256. 	}
  257. 	
  258. 	// 获取史低信息
  259. 	async function GettingSteamDBAppInfo(appId, type = "app", subIds = [], stores = "steam", cc = "cn", protocol = "https"){
  260. 		let requestPromise = null;
  261. 		let bundleId = "";
  262. 		
  263. 		if(type == "bundle"){
  264. 			bundleId = appId;
  265. 		}
  266. 		if(!isNaN(appId) && parseInt(appId) > 0){
  267. 			let requestUrl = protocol + "//api.enhancedsteam.com/pricev3/?"
  268. 						+ "bundleid=" + bundleId
  269. 						+ "&subs=" + subIds.join(',')
  270. 						+ "&appid=" + appId
  271. 						+ "&stores=" + stores
  272. 						+ "&cc=" + cc;
  273. 			// console.log('[史低]: requestUrl: ' + requestUrl); // DEBUG
  274. 			requestPromise = new Promise( (resolve, reject) => {
  275. 				GM_xmlhttpRequest({
  276. 					method: "GET",
  277. 					url: requestUrl,
  278. 					onload: function (response) {
  279. 						resolve(response.response);
  280. 					},
  281. 					onerror: function (error) {
  282. 						reject(error);
  283. 					}
  284. 				});
  285. 			});
  286. 		} else {
  287. 			requestPromise = Promise.reject("Invalid appid");
  288. 		}
  289. 		
  290. 		return requestPromise;
  291. 	}

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