feat: add SteamGifts - Discussions (#2179)

docs/game.md

@@ -97,6 +97,12 @@ Example: `https://store.steampowered.com/search/?specials=1&term=atelier` 中的
 
 <Route author="maple3142" example="/steam/news/282800" path="/steam/news/:appids" :paramsDesc="['游戏 id']"/>
 
+## SteamGifts
+
+### Discussions
+
+<Route author="whtsky" example="/steamgifts/discussions" path="/steamgifts/discussions/:category?" :paramsDesc="['分类名称，默认为All']"/>
+
 ## 旅法师营地
 
 ### 旅法师营地

lib/router.js

@@ -1316,4 +1316,7 @@ router.get('/maxnews/dota2', require('./routes/maxnews/dota2'));
 // 数英网最新文章
 router.get('/digitaling/index', require('./routes/digitaling/index'));
 
+// Steamgifts
+router.get('/steamgifts/discussions/:category?', require('./routes/steamgifts/discussions'));
+
 module.exports = router;

lib/routes/steamgifts/discussions.js

@@ -0,0 +1,58 @@
+const axios = require('@/utils/axios');
+const cheerio = require('cheerio');
+const url = require('url');
+
+const host = 'https://www.steamgifts.com';
+const discussionsIndexUrl = url.resolve(host, '/discussions');
+
+module.exports = async (ctx) => {
+    const category = ctx.params.category;
+
+    const categoryUrl = category ? discussionsIndexUrl + `/${category}` : discussionsIndexUrl;
+    const response = await axios.get(categoryUrl);
+    const $ = cheerio.load(response.data);
+    const links = $('a.table__column__heading')
+        .slice(0, 20)
+        .map((i, e) => url.resolve(host, $(e).attr('href')))
+        .get();
+
+    const out = await Promise.all(
+        links.map(async (link) => {
+            const cache = await ctx.cache.get(link);
+            if (cache) {
+                return JSON.parse(cache);
+            }
+
+            const response = await axios({
+                method: 'get',
+                url: link,
+                headers: {
+                    Referer: categoryUrl,
+                },
+            });
+
+            const $ = cheerio.load(response.data);
+
+            const timestamp = Number($('.comment__actions span').data('timestamp'));
+            const date = new Date(timestamp * 1000);
+
+            const item = {
+                title: $('title').text(),
+                description: $('.comment__description').html(),
+                pubDate: date.toUTCString(),
+                link,
+                guid: link,
+            };
+
+            ctx.cache.set(link, JSON.stringify(item));
+
+            return item;
+        })
+    );
+
+    ctx.state.data = {
+        title: `Steamgifts - Discussions - ${category || 'All'}`,
+        link: categoryUrl,
+        item: out,
+    };
+};