feat(route/cna): Preserve web crawling method.

lib/v2/cna/router.js

@@ -1,3 +1,4 @@
 module.exports = (router) => {
     router.get('/:id?', require('./'));
+    router.get('/web/:id?', require('./web/'));
 };

lib/v2/cna/web/index.js

@@ -0,0 +1,62 @@
+const got = require('@/utils/got');
+const cheerio = require('cheerio');
+const { parseDate } = require('@/utils/parse-date');
+const timezone = require('@/utils/timezone');
+
+module.exports = async (ctx) => {
+    const id = ctx.params.id || 'aall';
+
+    let rootUrl;
+
+    if (/^\d+$/.test(id)) {
+        rootUrl = `https://www.cna.com.tw/topic/newstopic/${id}.aspx`;
+    } else {
+        rootUrl = `https://www.cna.com.tw/list/${id}.aspx`;
+    }
+    const response = await got({
+        method: 'get',
+        url: rootUrl,
+    });
+
+    const $ = cheerio.load(response.data);
+    const list = $('*:is(.pcBox .caItem, .mainList li a div) h2')
+        .slice(0, ctx.query.limit ? parseInt(ctx.query.limit) : 10)
+        .toArray()
+        .map((item) => {
+            item = $(item);
+            return {
+                title: item.text(),
+                link: item.parents('a').attr('href'),
+                pubDate: timezone(parseDate(item.next().text()), +8),
+            };
+        });
+
+    const items = await Promise.all(
+        list.map((item) =>
+            ctx.cache.tryGet(item.link, async () => {
+                const detailResponse = await got({
+                    method: 'get',
+                    url: item.link,
+                });
+                const content = cheerio.load(detailResponse.data);
+                const topImage = content('.fullPic').html();
+
+                item.description = (topImage === null ? '' : topImage) + content('.paragraph').eq(0).html();
+                item.category = [
+                    ...content("meta[property='article:tag']")
+                        .get()
+                        .map((e) => e.attribs.content),
+                    content('.active > a').text(),
+                ];
+
+                return item;
+            })
+        )
+    );
+
+    ctx.state.data = {
+        title: $('title').text(),
+        link: rootUrl,
+        item: items,
+    };
+};