Downloadify !

Use this app to download your spotify playlists!

To check out the app, go to this link https://downloadify-frontend-react.onrender.com

Make sure to login with the following details in spotify since the spotify api is in development quota-

  username - [email protected]
  password - projectshashwat

Common problem - You are already logged in with your own account on spotify in your browser. Fix - Logout from spotify account in your browser before clicking on "Login"

Screenshot of App :

Setup instructions :

1. Fork and Clone the repo.

2. Make a new project in spotify developers dashboard and make file /auth/.env for backend variables

    PORT=8888 
    CLIENT_ID=spotify client id 
    CLIENT_SECRET=spotify client secret 
    REDIRECTURI="http://localhost:8888/api/logged"
    CLIENT_REDIRECTURI="http://localhost:3000/"
   

3. To start the node backend, cd to /auth and run

     $node index.js 
   

   the node backend will start at localhost:8888

4. Make a new project in youtube developers dashboard and rapid api dashboard and make file ./.env for frontend variables

    REACT_APP_YOUTUBE_API = youtube API key 
    REACT_APP_RAPID_API = rapid API key 
   

5. To start the react frontend cd to /. and run

   $npm run build 
   $npm start 
   

   The react frontend now started at localhost:3000

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Working of Downloadify

OAuth 2.0 is used to authenticate with spotify using nodejs

First the user is redirected to spotify login page where they login with spotify, spotify redirects to a prespecified callback url with an authentication code, this authentication code is used get token and finally the user is redireted to react front end along with the token.

The token is used to fetch playlists and corresponding songs of the user from spotify and displayed on the page, the user then select from the songs and click download to start the download of selected songs

After download is pressed , all the selected songs are searched by the string "song name" + " song artist " on youtube using youtube API for finding the youtube url, this youtube url is passed to Rapid API youtube mp3 downloader (ytjar) which gives a cdn link to download the songs' mp3, which is then used to start the downloads.

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