rss: add telegram sticker pack

README.md

@@ -150,6 +150,7 @@ RSSHub 是一个轻量、易于扩展的 RSS 生成器，可以给任何奇奇
     -   最热/最新主题
 -   Telegram
     -   频道
+    -   贴纸包
 -   Readhub
     -   分类
 -   GitHub

config.js

@@ -42,4 +42,7 @@ module.exports = {
     github: {
         access_token: process.env.GITHUB_ACCESS_TOKEN,
     },
+    imgur: {
+        clientId: process.env.IMGUR_CLIRNT_ID,
+    },
 };

docs/README.md

@@ -1350,6 +1350,14 @@ key: 产品密钥
 
 参数: username，频道 username
 
+### 贴纸包
+
+举例: [https://rsshub.app/telegram/stickerpack/DIYgod](https://rsshub.app/telegram/stickerpack/DIYgod)
+
+路由: `/telegram/stickerpack/:name`
+
+参数: name，贴纸包 id，可在分享贴纸获得的 URL 中找到
+
 ## Readhub
 
 ### 分类 <Author uid="WhiteWorld"/>

package.json

@@ -50,6 +50,7 @@
     "git-rev-sync": "1.12.0",
     "googleapis": "32.0.0",
     "iconv-lite": "0.4.23",
+    "imgur": "^0.2.1",
     "json-bigint": "0.3.0",
     "koa": "2.5.2",
     "koa-favicon": "2.0.1",
@@ -62,6 +63,7 @@
     "readall": "1.0.0",
     "redis": "2.8.0",
     "rss-parser": "3.4.3",
+    "sharp": "^0.20.7",
     "twit": "2.2.11",
     "winston": "3.0.0"
   },

router.js

@@ -254,6 +254,11 @@ router.get('/v2ex/topics/:type', require('./routes/v2ex/topics'));
 // Telegram
 if (config.telegram && config.telegram.token) {
     router.get('/telegram/channel/:username', require('./routes/telegram/channel'));
+    if (config.imgur && config.imgur.clientId) {
+        router.get('/telegram/stickerpack/:name', require('./routes/telegram/stickerpack'));
+    } else {
+        logger.warn('Telegram Sticker Pack RSS is disabled for lacking config.');
+    }
 } else {
     logger.warn('Telegram RSS is disabled for lacking config.');
 }

routes/telegram/stickerpack.js

@@ -0,0 +1,76 @@
+const axios = require('../../utils/axios');
+const config = require('../../config');
+const logger = require('../../utils/logger');
+const sharp = require('sharp');
+const imgur = require('imgur');
+const fs = require('fs');
+
+if (config.imgur && config.imgur.clientId) {
+    imgur.setClientId(config.imgur.clientId);
+}
+
+module.exports = async (ctx) => {
+    const name = ctx.params.name;
+    const cacheDays = 30;
+
+    const response = await axios({
+        method: 'get',
+        url: `https://api.telegram.org/bot${config.telegram.token}/getStickerSet?name=${name}`,
+    });
+
+    const data = response.data.result;
+
+    const links = await Promise.all(
+        data.stickers.map(async (item) => {
+            const key = `telegramstickerpack${item.file_id}`;
+            const cache = await ctx.cache.get(key);
+            if (cache) {
+                return Promise.resolve(cache);
+            } else {
+                const pathResponse = await axios({
+                    method: 'get',
+                    url: `https://api.telegram.org/bot${config.telegram.token}/getFile?file_id=${item.file_id}`,
+                });
+                const path = pathResponse.data.result.file_path;
+
+                const fileResponse = await axios({
+                    method: 'get',
+                    url: `https://api.telegram.org/file/bot${config.telegram.token}/${path}`,
+                    responseType: 'arraybuffer',
+                });
+
+                const filePath = `cache/${item.file_id}.png`;
+
+                await sharp(fileResponse.data)
+                    .png()
+                    .toFile(filePath);
+
+                let imgurResponse;
+                try {
+                    imgurResponse = await imgur.uploadFile(filePath);
+                } catch (e) {
+                    logger.error(`Error in imgur upload ${filePath}`, e);
+                }
+                const link = imgurResponse.data.link;
+
+                fs.unlink(filePath, (e) => {
+                    logger.error(`Error in remove ${filePath}`, e);
+                });
+
+                ctx.cache.set(key, link, cacheDays * 24 * 60 * 60);
+                return Promise.resolve(link);
+            }
+        })
+    );
+
+    ctx.state.data = {
+        title: `${data.title} - Telegram Sticker Pack`,
+        link: `https://t.me/addstickers/${name}`,
+        item: data.stickers.map((item, index) => ({
+            title: item.emoji,
+            description: `<img referrerpolicy="no-referrer" src="${links[index]}">`,
+            guid: item.file_id,
+            link: links[index],
+        })),
+    };
+};