const Router = require("koa-router"); const githubNewRouter = new Router(); const axios = require("axios"); const cheerio = require("cheerio"); const { get, set, del } = require("../utils/cacheData"); // 接口信息 const routerInfo = { name: "github", title: "Github", subtitle: "trending", }; // 缓存键名 const cacheKey = "githubData"; // 调用时间 let updateTime = new Date().toISOString(); const url = "https://github.com/trending"; const headers = { "User-Agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.0 Mobile/15E148 Safari/604.1", }; // 数据处理 const getData = (data) => { if (!data) return false; const dataList = []; const $ = cheerio.load(data); try { $(`.Box-row`).each((i,e)=>{ // console.log(getCheerio(e).html()); const item= cheerio.load($(e).html()) // console.log(item); const title = item("h2 a").attr('href').replace("\/","") const url = `https://github.com/${title}` const excerpt = item('p').text().replace(/(^\s*)|(\s*$)/g, "") const language = item('.f6 span[itemprop="programmingLanguage"]').text().replace(/(^\s*)|(\s*$)/g, "") const stars = item('.f6 a:first').text().replace(/(^\s*)|(\s*$)/g, "") const forks = item('.f6 a:eq(1)').text().replace(/(^\s*)|(\s*$)/g, "") const starstoday = item('.f6 span:eq(4)').text().replace(/(^\s*)|(\s*$)/g, "") dataList.push({ title: title, desc: excerpt, url: url, language: language, stars: stars, forks: forks, starstoday: starstoday, }); }); return dataList; } catch (error) { console.error("数据处理出错" + error); return false; } }; // trending githubNewRouter.get("/github", async (ctx) => { console.log("获取github trending"); try { // 从缓存中获取数据 let data = await get(cacheKey); const from = data ? "cache" : "server"; if (!data) { // 如果缓存中不存在数据 console.log("从服务端重新github trending"); // 从服务器拉取数据 const response = await axios.get(url, { headers }); // console.log(response.data); data = getData(response.data); updateTime = new Date().toISOString(); if (!data) { ctx.body = { code: 500, ...routerInfo, message: "获取失败", }; return false; } // 将数据写入缓存 await set(cacheKey, data); } ctx.body = { code: 200, message: "获取成功", ...routerInfo, from, total: data.length, updateTime, data, }; } catch (error) { console.error(error); ctx.body = { code: 500, ...routerInfo, message: "获取失败", }; } }); // 豆瓣新片榜 - 获取最新数据 githubNewRouter.get("/github/new", async (ctx) => { console.log("获取github trending - 最新数据"); try { // 从服务器拉取最新数据 const response = await axios.get(url, { headers }); const newData = getData(response.data); updateTime = new Date().toISOString(); console.log("从服务端重新github trending"); // 返回最新数据 ctx.body = { code: 200, message: "获取成功", ...routerInfo, updateTime, total: newData.length, data: newData, }; // 删除旧数据 await del(cacheKey); // 将最新数据写入缓存 await set(cacheKey, newData); } catch (error) { // 如果拉取最新数据失败,尝试从缓存中获取数据 console.error(error); const cachedData = await get(cacheKey); if (cachedData) { ctx.body = { code: 200, message: "获取成功", ...routerInfo, total: cachedData.length, updateTime, data: cachedData, }; } else { // 如果缓存中也没有数据,则返回错误信息 ctx.body = { code: 500, ...routerInfo, message: "获取失败", }; } } }); githubNewRouter.info = routerInfo; module.exports = githubNewRouter;