豆瓣新片榜

routes/douban_new.js

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+const Router = require("koa-router");
+const doubanNewRouter = new Router();
+const axios = require("axios");
+const cheerio = require("cheerio");
+const { get, set, del } = require("../utils/cacheData");
+
+// 接口信息
+const routerInfo = {
+  name: "douban",
+  title: "豆瓣",
+  subtitle: "新片榜"
+};
+
+// 缓存键名
+const cacheKey = "doubanNewData";
+
+// 调用时间
+let updateTime = new Date().toISOString();
+
+// 调用路径
+const url = "https://movie.douban.com/chart/";
+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"
+};
+
+// 豆瓣新片榜单特殊处理 - 标题
+const replaceTitle = (title, score) => {
+  return `[★${score}] ` + title.replace(/\n/g, "").replace(/ /g, "").replace(/\//g, " / ").trim();
+};
+
+// 数据处理
+const getData = (data) => {
+  if (!data) return false;
+  const dataList = [];
+  const $ = cheerio.load(data);
+  try {
+    $(".article .item").map((idx, item) => {
+      const id = $(item).find("a").attr("href").split("/").at(-2) ?? "";
+      const score = $(item).find(".rating_nums").text() ?? "";
+
+      dataList.push({
+        title: replaceTitle($(item).find("a").text(), score),
+        desc: $(item).find("p").text(),
+        score,
+        comments: $(item).find("span.pl").text().match(/\d+/)[0] ?? "",
+        pic: $(item).find("img").attr("src") ?? "",
+        url: $(item).find("a").attr("href") ?? "",
+        mobileUrl: `https://m.douban.com/movie/subject/${id}`
+      });
+    });
+    return dataList;
+  } catch (error) {
+    console.error("数据处理出错" + error);
+    return false;
+  }
+};
+
+// 豆瓣新片榜
+doubanNewRouter.get("/douban_new", async (ctx) => {
+  console.log("获取豆瓣新片榜");
+  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("从服务端重新获取豆瓣新片榜");
+      // 从服务器拉取数据
+      const response = await axios.get(url, { headers });
+      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
+doubanNewRouter.get("/douban_new/new", async (ctx) => {
+  console.log("获取豆瓣新片榜 - 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("从服务端重新获取豆瓣新片榜");
+
+    // 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"
+      };
+    }
+  }
+});
+
+doubanNewRouter.info = routerInfo;
+module.exports = doubanNewRouter;