Add facebook page (#1245)

docs/README.md

@@ -563,6 +563,10 @@ RSSHub 提供下列 API 接口:
 
 <route name="分区帖子" author="xyqfer" example="/nga/forum/485" path="/nga/forum/:fid"  :paramsDesc="['分区 id, 可在分区主页 URL 找到']"/>
 
+### Facebook
+
+<route name="粉絲專頁" author="maple3142" example="/facebook/page/SonetPCR" path="/facebook/page/:id" :paramsDesc="['專頁 id']"/>
+
 ## 编程
 
 ### 掘金

router.js

@@ -904,4 +904,7 @@ router.get('/steam/news/:appids', require('./routes/steam/news'));
 // 扇贝
 router.get('/shanbay/checkin/:id', require('./routes/shanbay/checkin'));
 
+// Facebook
+router.get('/facebook/page/:id', require('./routes/facebook/page'));
+
 module.exports = router;

routes/facebook/article.js

@@ -0,0 +1,15 @@
+const axios = require('../../utils/axios');
+const cheerio = require('cheerio');
+
+module.exports = async (url) => {
+    const { data: html } = await axios.get(url);
+    const $ = cheerio.load(html);
+    const $ct = $($('#m_story_permalink_view').get(0)).find('div>div>div>div>p');
+    $ct.find('br').replaceWith('\n');
+    const content = $ct
+        .map((i, p) => $(p).text())
+        .toArray()
+        .join('\n');
+    const { searchParams: q } = new URL(url);
+    return { url: `https://www.facebook.com/story.php?story_fbid=${q.get('story_fbid')}&id=${q.get('id')}`, html, title: $($('h3 strong a').get(0)).text(), content };
+};

routes/facebook/page.js

@@ -0,0 +1,31 @@
+const axios = require('../../utils/axios');
+const cheerio = require('cheerio');
+const getArticle = require('./article');
+
+module.exports = async (ctx) => {
+    const { id } = ctx.params;
+    const { data: html } = await axios.get(`https://mbasic.facebook.com/${encodeURIComponent(id)}/`);
+    const $ = cheerio.load(html);
+    ctx.state.data = {
+        title: $('#m-timeline-cover-section h1 span').text(),
+        link: `https://www.facebook.com/${encodeURIComponent(id)}/`,
+        description: $('#sub_profile_pic_content>div>div:nth-child(3) div>span')
+            .find('br')
+            .replaceWith('\n')
+            .text(),
+        item: await Promise.all(
+            $('div[role=article]>div:nth-child(2)>div:nth-child(2)>span+a')
+                .toArray()
+                .map((x) => $(x).attr('href'))
+                .map(async (url) => {
+                    const d = await getArticle('https://mbasic.facebook.com' + url);
+                    return {
+                        title: d.title,
+                        description: d.content.replace(/\n/g, '<br>'),
+                        link: d.url,
+                    };
+                })
+        ),
+    };
+    return $;
+};