The routes under /api require Content-type: application/json as a header as well as HTTP_AUTHORIZATION. You must have signed into the app via Battle.net and an admin must grant you API access via User#grant_api_access. You need the api_token value from your record in the users table. Then the authorization header takes the format: Token YOUR_BATTLETAG YOUR_API_TOKEN,
e.g., Token cheshire#1234 nafjk3n2dkslmio.
Create a Battle.net API app, cp dotenv.sample .env, and
copy your Battle.net app key and secret into the .env file as BNET_APP_ID
and BNET_APP_SECRET.
You will also need to use a service like ngrok to have a public URL
that will hit your local server. Start ngrok via ngrok http 3000;
look at the https URL it spits out. In your Battle.net app, set
https://your-ngrok-id-here.ngrok.io/users/auth/bnet/callback as
the "Register Callback URL" value. Set https://your-ngrok-id-here.ngrok.io
as "Web Site". Update .env so that BNET_APP_HOST is set to your your-ngrok-id-here.ngrok.io.
Start the Rails server via bundle exec rails s. Now you should be able to go to
https://your-ngrok-id-here.ngrok.io/ and sign in via Battle.net.
Create an app on Heroku.
Create a Battle.net app and set its "Register Callback URL" to
https://your-heroku-app.herokuapp.com/users/auth/bnet/callback. Set
https://your-heroku-app.herokuapp.com as the "Web Site".
heroku git:remote -a your-heroku-app
heroku config:set BNET_APP_ID=your_app_id_here
heroku config:set BNET_APP_SECRET=your_app_secret_here
heroku config:set BNET_APP_HOST=your-heroku-app.herokuapp.com
git push heroku master
heroku run rake db:migrate
heroku open