Add Douyin video downloader with auto-cookie feature

Server/x-tt-params.js

@@ -0,0 +1,27 @@
+let CryptoJS = require("crypto-js");
+getXTTP = e => {
+    const t = [];
+    return Object.keys(e).forEach((i => {
+            const o = `${i}=${e[i]}`;
+            t.push(o)
+        })),
+    t.push("is_encryption=1"),
+    ((e, t) => {
+        const i = ((e, t) => {
+            let i = e.toString();
+            const o = i.length;
+            return o < 16 ? i = new Array(16 - o + 1).join("0") + i : o > 16 && (i = i.slice(0, 16)),
+            i
+        })("webapp1.0+20210628"),
+        n = CryptoJS.enc.Utf8.parse(i);
+        return CryptoJS.AES.encrypt(e, n, {
+            iv: n,
+            mode: CryptoJS.mode.CBC,
+            padding: CryptoJS.pad.Pkcs7
+        }).toString()
+    })(t.join("&"))
+}
+
+module.exports = {
+    getXTTP: getXTTP
+};