Hotfix: douyin type and appLink (#2039)

* Hotfix: douyin type

* Hotfix: applink

lib/routes/douyin/utils.js

@@ -1,25 +1,56 @@
-const formatVideoUrl = (url) => url.replace('/play/', '/playwm/');
-
 const formatItem = (item) => {
-    const originVideoUrl = item.video.play_addr.url_list[0];
-    const formatedVideoUrl = formatVideoUrl(originVideoUrl);
+    const formatVideoUrl = (url) => url.replace('/play/', '/playwm/');
+    const appLink = `https://www.amemv.com/redirect/?redirect_url=snssdk1128%3A%2F%2Faweme%2Fdetail%2F${item.aweme_id}%3Frefer%3Dweb%26gd_label%3Dclick_wap_profile_feature%26appParam%3D%26needlaunchlog%3D1`;
+    let content = '';
+    let link = '';
+    let guid = '';
+
+    switch (item.aweme_type) {
+        case 2:
+            // 图片
+            content = item.image_infos.reduce((acc, item) => {
+                const imgUrl = item.label_large.url_list[0].replace('.webp', '.png');
+                acc += `
+                    <img referrerpolicy="no-referrer" src="${imgUrl}"><br>
+                `;
+                return acc;
+            }, '');
+            link = guid = appLink;
+            break;
+
+        case 4:
+            // 视频
+            /* eslint-disable no-case-declarations */
+            const originVideoUrl = item.video.play_addr.url_list[0];
+            const formatedVideoUrl = formatVideoUrl(originVideoUrl);
+            content = `
+                <video
+                    controls="controls"
+                    width="${item.video.width}"
+                    height="${item.video.height}"
+                    poster="${item.video.cover.url_list[0]}"
+                    src="${formatedVideoUrl}"
+                >
+            `;
+            link = formatedVideoUrl;
+            guid = originVideoUrl;
+            break;
+
+        default:
+            content = '未知类型，请点击<a href="https://github.com/DIYgod/RSSHub/issues">链接</a>提交issue';
+            link = guid = appLink;
+    }
 
     return {
         title: item.desc,
         description: `
     <p>${item.desc}</p>
-    <p><a href="https://www.amemv.com/redirect/?redirect_url=aweme%3A%2F%2Faweme%2Fdetail%2F${item.aweme_id}%3Frefer%3Dweb%26gd_label%3Dclick_wap_profile_feature%26appParam%3D%26needlaunchlog%3D1">APP 内打开</a></p>
+    <p><a href="${appLink}">APP 内打开</a></p>
     <p>
-        <video
-          controls="controls"
-          width="${item.video.width}"
-          height="${item.video.height}"
-          poster="${item.video.cover.url_list[0]}"
-          src="${formatedVideoUrl}"
-        >
+        ${content}
     </p>`,
-        link: formatedVideoUrl,
-        guid: originVideoUrl,
+        link,
+        guid,
     };
 };