first commit

.env.example

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+# Last.fm
+
+LASTFM_INSTANCE= # ws.audioscrobbler.com
+
+LASTFM_USERNAME= # meowcatheorange
+LASTFM_API_KEY= # cccccccccccccccccc...
+LASTFM_SHARED_SECRET= # cccccccccccccccccc...
+
+# Cobalt
+
+COBALT_INSTANCE= # co.wuk.sh
+
+# Nextcloud
+
+NEXTCLOUD_INSTANCE= # next.abtmtr.link
+
+NEXTCLOUD_USERNAME= # meowcatheorange
+NEXTCLOUD_PASSWORD= # ccccc-ccccc-ccccc-ccccc-ccccc
+
+NEXTCLOUD_FOLDER= # /Music/LastFMDownloader/

.gitignore

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+node_modules/
+package-lock.json
+.env

index.js

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+require('dotenv').config();
+const process = require('process');
+const { Readable } = require('stream');
+// const { searchMusics } = require("fix-esm").require('node-youtube-music');
+const { GetListByKeyword } = require("youtube-search-api");
+const skewered = require("skewered");
+const { createClient } = require('fix-esm').require("webdav");
+const path = require("path");
+
+function pathGenerator({ url, name, channelName }) {
+  return path.join(process.env.NEXTCLOUD_FOLDER, `${url}-${skewered(`${name} - ${channelName}`)}.mp3`)
+}
+
+async function getVideo() {
+  const trackData = await fetch(
+    `https://${process.env.LASTFM_INSTANCE}/2.0/?method=user.getrecenttracks&user=${process.env.LASTFM_USERNAME}&api_key=${process.env.LASTFM_API_KEY}&format=json&limit=1&extended=1`
+  ).then(x => x.json()).then(data => data.recenttracks.track[0]);
+
+  // const musics = await searchMusics(`${trackData.artist.name} - ${trackData.name}`);
+
+  const videoList = await GetListByKeyword(`${trackData.artist.name} - ${trackData.name}`, false, 1, [
+    {type: "video"}
+  ]);
+
+  const musicVideo = videoList.items[0];
+  
+  return {
+    url: musicVideo.id,
+    name: musicVideo.title,
+    channelName: musicVideo.channelTitle
+  };
+}
+
+async function checkNextcloud({ url, name, channelName }, nextcloudClient) {
+  const fileName = pathGenerator({ url, name, channelName });
+
+  return await nextcloudClient.exists(fileName);
+}
+
+async function downloadFromCobalt({ url, name, channelName }) {
+  const processor = await fetch(`https://${process.env.COBALT_INSTANCE}/api/json`, {
+    method: "POST",
+    body: JSON.stringify({
+      url: `https://youtu.be/${url}`,
+      vCodec: "h264",
+      vQuality: "144",
+      aFormat: "mp3",
+      filenamePattern: "basic",
+      isAudioOnly: true,
+      disableMetadata: false
+    }),
+    headers: [
+      ["Accept", "application/json"],
+      ["Content-Type", "application/json"],
+    ]
+  }).then(x => x.json());
+
+  let processorURL;
+
+  switch (processor.status) {
+    case 'error':
+    case 'rate-limit':
+      throw new Error(`Error! (${processor.text})`);
+    case 'redirect':
+      processorURL = processor.audio || processor.url;
+      break;
+    case 'picker':
+      throw new Error("Can't handle picker!");
+    case 'stream':
+      const streamProcessor = await fetch(`${processor.url}&p=1`).then(x => x.json());
+
+      if (streamProcessor.status === "continue")
+        processorURL = processor.audio || processor.url;
+      else processorURL = processor.audio || processor.url;
+
+      break;
+    default: 
+      processorURL = processor.audio || processor.url;
+      break;
+  }
+
+  const { body } = await fetch(processorURL);
+
+  return {
+    fileStream: Readable.fromWeb(body),
+    url,
+    name,
+    channelName
+  };
+}
+
+async function uploadToNextcloud({ fileStream, url, name, channelName }, nextcloudClient) {
+  await nextcloudClient.createDirectory(process.env.NEXTCLOUD_FOLDER, {
+    recursive: true,
+  });
+
+  const fileName = pathGenerator({ url, name, channelName });
+  fileStream.pipe(nextcloudClient.createWriteStream(fileName));
+
+  return fileName;
+}
+
+async function main() {
+  const video = await getVideo();
+  console.log(video);
+
+  const nextcloudClient = createClient(
+    `https://${process.env.NEXTCLOUD_INSTANCE}/remote.php/dav/files/${process.env.NEXTCLOUD_USERNAME}/`,
+    {
+      username: process.env.NEXTCLOUD_USERNAME,
+      password: process.env.NEXTCLOUD_PASSWORD,
+    }
+  );
+  
+  if (await checkNextcloud(video, nextcloudClient)) return null;
+
+  const cobalt = await downloadFromCobalt(video);
+  console.log(cobalt);
+  const nextcloud = await uploadToNextcloud(cobalt, nextcloudClient);
+  console.log(nextcloud);
+  return nextcloud;
+}
+
+main();

package.json

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+{
+  "name": "lastfm-downloader",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "dotenv": "^16.4.4",
+    "fix-esm": "^1.0.1",
+    "skewered": "^1.0.0",
+    "webdav": "^5.3.2",
+    "youtube-search-api": "^1.2.1"
+  }
+}