Create savetube.js

savetube.js

@@ -0,0 +1,82 @@
+const crypto = require("crypto")
+const axios = require("axios")
+
+class savetube {
+  constructor() {
+    this.ky = 'C5D58EF67A7584E4A29F6C35BBC4EB12';
+    this.fmt = ['144', '240', '360', '480', '720', '1080', 'mp3'];
+    this.m = /^((?:https?:)?\/\/)?((?:www|m|music)\.)?(?:youtube\.com|youtu\.be)\/(?:watch\?v=)?(?:embed\/)?(?:v\/)?(?:shorts\/)?([a-zA-Z0-9_-]{11})/;
+    this.is = axios.create({
+      headers: {
+        'content-type': 'application/json',
+        'origin': 'https://yt.savetube.me',
+        'user-agent': 'Mozilla/5.0 (Android 15; Mobile; SM-F958; rv:130.0) Gecko/130.0 Firefox/130.0'
+      }
+    })
+  }
+  
+  async decrypt(enc) {
+    try {
+      const [sr, ky] = [Buffer.from(enc,'base64'), Buffer.from(this.ky,'hex')]
+      const [iv, dt] = [sr.slice(0,16), sr.slice(16)]
+      const dc = crypto.createDecipheriv('aes-128-cbc', ky, iv);
+      return JSON.parse(Buffer.concat([dc.update(dt), dc.final()]).toString());
+    } catch (e) {
+      throw new Error(`Error while decrypting data: ${e.message}`);
+    }
+  }
+  
+  async getCdn() {
+    const response = await this.is.get("https://media.savetube.vip/api/random-cdn");
+    if (!response.status) return response;
+    return {
+      status: true,
+      data: response.data.cdn
+    };
+  }
+  
+  async download(url, format = 'mp3') {
+    const id = url.match(this.m)?.[3];
+    if (!id) {
+      return {
+        status: false,
+        msg: "ID cannot be extracted from url"
+      };
+    }
+    if (!format || !this.fmt.includes(format)) {
+      return {
+        status: false,
+        msg: "Formats not found",
+        list: this.fmt
+      };
+    }
+    try {
+      const u = await this.getCdn();
+      if (!u.status) return u;
+      const res = await this.is.post(`https://${u.data}/v2/info`, {
+        url: `https://www.youtube.com/watch?v=${id}`
+      });
+      const dec = await this.decrypt(res.data.data);
+      const dl = await this.is.post(`https://${u.data}/download`, {
+        id: id,
+        downloadType: format === 'mp3' ? 'audio' : 'video',
+        quality: format === 'mp3' ? '128' : format,
+        key: dec.key
+      })
+
+      return {
+        status: true,
+        title: dec.title,
+        format: format,
+        thumb: dec.thumbnail || `https://i.ytimg.com/vi/${id}/hqdefault.jpg`,
+        duration: dec.duration,
+        cached: dec.fromCache,
+        dl: dl.data.data.downloadUrl
+      };
+    } catch (error) {
+      return {
+        status: false,
+        error: error.message
+      };
+    }
+  }