tiktok is back!

- added support for tiktok (images won't work, they're only accessible through the app)
- hopefully main input bar is now not rounded on ios, i fucking hate apple
- if service is not supported, a correlating error will appear, not generic one
- removed duplicates from config that are present in package json already
- tiny bit of clean up

src/modules/services/tiktok.js

@@ -0,0 +1,30 @@
+import got from "got";
+import loc from "../../localization/manager.js";
+import { genericUserAgent} from "../config.js";
+import { unicodeDecode } from "../sub/utils.js";
+
+export default async function(obj) {
+    try {
+        if (!obj.postId) {
+            let html = await got.get(`https://vt.tiktok.com/${obj.id}`, { headers: { "user-agent": genericUserAgent } });
+            html.on('error', (err) => {
+                return { error: loc(obj.lang, 'ErrorCantConnectToServiceAPI', 'tiktok') };
+            });
+            html = html.body
+            obj.postId = html.split('video/')[1].split('?')[0]
+        }
+        let url = `https://tiktok.com/@video/video/${obj.postId}`
+        let html = await got.get(url, { headers: { "user-agent": genericUserAgent } });
+        html.on('error', (err) => {
+            return { error: loc(obj.lang, 'ErrorCantConnectToServiceAPI', 'tiktok') };
+        });
+        html = html.body;
+        if (html.includes(',"preloadList":[{"url":"')) {
+            return { urls: unicodeDecode(html.split(',"preloadList":[{"url":"')[1].split('","id":"')[0].trim()), filename: `tiktok_${obj.postId}.mp4` };
+        } else {
+            return { error: loc(obj.lang, 'ErrorEmptyDownload') };
+        }
+    } catch (e) {
+        return { error: loc(obj.lang, 'ErrorBadFetch') };
+    }
+}