157 lines
3.7 KiB
JavaScript
157 lines
3.7 KiB
JavaScript
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/**
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* @description 解析推荐的关键词
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* @param {string} type 来源类型
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* @param {*} datas 关键词数据
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* @param {number} [max] 最大返回数量
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* @returns {string[]} 关键词列表
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*/
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function parseSearchWords(type = '', datas = null, max = 10) {
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if (!datas) {
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return [];
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}
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/** @type {string[]} */
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let words = [];
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try {
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switch (type) {
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case '360':
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words = parseSearch360(datas);
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case 'baidu':
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words = parseSearchBaidu(datas);
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case 'bing':
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words = parseSearchBing(datas);
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default:
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break;
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}
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} catch (error) {
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console.error('解析失败');
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return [];
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}
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const arrLength = words.length;
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const cutLength = Math.max(arrLength - max, 0);
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const cutStart = arrLength - cutLength;
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words.splice(cutStart, cutLength);
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let value = '';
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for (value of words) {
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if (typeof value !== 'string') {
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console.error('关键词的数据类型错误');
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return [];
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}
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}
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return words;
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}
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/**
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* @desc 解析 360 推荐关键词（2021-12-29）
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* @param {{ result: { word: string }[] }} datas
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*/
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function parseSearch360(datas) {
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const list = datas.result;
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const words = [];
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list.forEach((item) => {
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words.push(item.word);
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});
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return words;
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}
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/**
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* @desc 解析百度推荐关键词（2021-12-29）
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* @param {{ s: string[] }} datas
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*/
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function parseSearchBaidu(datas) {
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const list = datas.s;
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return (Array.isArray(list) ? list : []);
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}
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/**
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* @typedef WordsBing
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* @type {{ AS: { Results: { Suggests: { Txt: string }[] } } }}
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*/
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/**
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* @desc 解析 Bing 推荐关键词（2021-12-29）
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* @param {WordsBing} datas
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*/
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function parseSearchBing(datas) {
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const list = datas.AS.Results.Suggests;
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const words = [];
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list.forEach((item) => {
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words.push(item.Txt);
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});
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return words;
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}
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/**
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* @description 获取搜索 URL
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* @param {string} type 搜索引擎类型
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* @param {string} word 搜索关键词
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* @param {string} [cbName] 回调函数名称，用于获取推荐关键词
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* @returns {(string|null)} 根据参数返回不同的结果
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* - 无 `cbName` 时返回搜索结果页面 URL
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* - 有 `cbName` 时返回推荐关键词 URL
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* - 查找失败时返回 `null`
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*/
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function getSearchURL(type, word, cbName) {
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if (!(type && word)) {
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return null;
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}
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const info = searchItems.find((item) => {
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return (item.name === type);
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});
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if (!info) {
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return null;
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}
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word = window.encodeURI(word);
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const regCb = new RegExp('{cb}');
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const regW = new RegExp('{w}');
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if (cbName) {
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const url = info.wordURL;
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return url.replace(regCb, cbName).replace(regW, word);
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} else {
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const url = info.resultURL;
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return url.replace(regW, word);
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}
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}
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/**
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* @typedef {object} SearchItem
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* @property {string} name 名称
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* @property {string} resultURL 搜索结果页面 URL
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* @property {string} wordURL 推荐关键词 URL
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*/
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/** @type {SearchItem[]} */
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const searchItems = [
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{
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name: '360',
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resultURL: 'https://www.so.com/s?q={w}',
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wordURL: 'https://sug.so.360.cn/suggest?format=json&word={w}&callback={cb}',
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},
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{
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name: 'baidu',
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resultURL: 'https://www.baidu.com/s?wd={w}',
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wordURL: 'https://suggestion.baidu.com/su?wd={w}&cb={cb}',
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},
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{
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name: 'bing',
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resultURL: 'https://cn.bing.com/search?q={w}',
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wordURL: 'https://api.bing.com/qsonhs.aspx?type=cb&q={w}&cb={cb}',
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// wordURL: 'https://sg1.api.bing.com/qsonhs.aspx?type=cb&cb={cb}&q={w}',
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},
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];
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