Rails 5.0 API example application that provides user with authentication, check-in, finding venue, and other users who are checked in. The application uses:

• FourSquare API for finding venues
• JWT for management and authentication
• Unplugg API for time-series prediction
• Ruby on Rails for back-end framework

This backend API provides:

• Create user account
• Provide authentication for users
• List venues new user current location
• Check in user to venue
• Provide popular venue locatioin
• List other checked in users
• Provide recomended venue

Before genearting your application, you will need:

• The Ruby language - version 2.3.5
• The Rails gem - version 5.2.1

Main gems used by the application

• JWT - provides module to decode and encode user payload
• Dotenv-rails - helps hide important information that you do not want to expose to the public
• Rspec-rails - for testing your application
• Faraday - helps make HTTP calls easier and organize
• Haversine - helps to calculate latitude and lo

Install gem with command

  bundle install

Create Postegres Database

  rails db:create

Run database migration

  rails db:mirgate

Register for FourSquare API development

• Store client id key in .env file with key CLIENT_ID
• Store client secret in .env file with key CLIENT_SECRET

Register for Unplugg API

• Store the API key in .env file with key UNPLUG_SECRET
• Store callback URL in .env file with key CALLBACK_WEBHOOK