Control Spotify Connect devices with Alexa

UK: https://www.amazon.co.uk/Lawrence-Thorpe-Connect-Control-Spotify/dp/B074KFNWFD
US: https://www.amazon.com/Lawrence-Thorpe-Connect-Control-Spotify/dp/B074KFNWFD

1. Make a Spotify developer app at developer.spotify.com, get a client ID and client secret
2. Make a new Amazon Alexa skill, custom. Lots of details omitted here, but: once you get to the part in the Alexa developer console where you can upload/paste in JSON, then run skill/skill.js to generate the JSON required

node skill/skill.js

3. Account linking on Alexa skill: turn it on, choose "Auth Code Grant", set Authorization URI to "https://accounts.spotify.com/authorize", set "Access Token URI" to "https://accounts.spotify.com/api/token", set client ID and secret, add scopes "user-read-playback-state" and "user-modify-playback-state", add three redirect URIs:

https://alexa.amazon.co.jp/api/skill/link/M1OP8C9N8NBYP7
https://pitangui.amazon.com/api/skill/link/M1OP8C9N8NBYP7
https://layla.amazon.com/api/skill/link/M1OP8C9N8NBYP7

4. Deploy this webapp to somewhere that supports HTTPS (required for Alexa skills), for example Heroku
5. Configure the skill to use an HTTPS endpoint of https://<your-url>/<app-name> where app-name is the name specified in alexa.app('app-name'), connect by default

MIT

This product is not endorsed, certified or otherwise approved in any way by Spotify. Spotify is the registered trade mark of the Spotify Group.