From 69fb0640be473dfc39db15e6032ac3b60b4d5038 Mon Sep 17 00:00:00 2001
From: x-dr <xd9722@gmail.com>
Date: Sun, 24 Dec 2023 22:44:42 +0800
Subject: [PATCH] feat: add GitHub Trending Api

---
 routes/github.js | 167 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 167 insertions(+)
 create mode 100644 routes/github.js

diff --git a/routes/github.js b/routes/github.js
new file mode 100644
index 0000000..350b580
--- /dev/null
+++ b/routes/github.js
@@ -0,0 +1,167 @@
+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;
\ No newline at end of file