Introduction

This is a sports betting backend implemented in Kotlin and Spring Boot. It features a GraphQL API and a WebSocket subscription API.

This is a work in progress. It is not yet ready for production use yet.

This apps fetches live and pre-match odds from bets-api.com. Register with them using my referral link to support this project.

Demo

Demo betting frontend: https://www.parabolicbet.com/

The frontend codebase is in my ultrabet-ui repository

Deployment

This repository contains two applications. The first one is a public GraphQL API that provides odds and other public data. It also provides a WebSocket subscription API for live score updates. Finally, it is responsible for fetching the event fixtures, live scores, and odds from the odds-api.com. The second one is a private GraphQL API that provides betting functionality.

The two applications are both deployed to Fly.io

To deploy the application that polls odds-api and provides the public API, run:

flyctl deploy -c application/fly.toml

To deploy the application that provides the private betting API, run:

flyctl deploy -c betting-api/fly.toml

Roadmap

• Core betting features (ongoing, see TODO below)
• Bet types
  • Single ( done)
  • Parlay (done)
  • System
• Game field live visualization
• Bet builder Bet365 style
• Back Office
  • Risk management (bettors, alerts, limits, etc)
  • Bet list with voiding
• Wallet integration
• Payment gateway integration
• Multiple languages
• Commercial skinning
• Profit

TODO

• Spreads (handicap) market with odds fetching and result setting
• Improve performance of the bets page query
• Double chance market (calculated from h2h)
• Alternative totals market (calculated from totals)
• Quarter/half markets
• System bet
• Event view that shows all markets and options for an event
• Admin queries and mutations
• Pagination for bets page
• Show all score updates on current score mouse hover (?)
• Proper design and styling for the betting frontend
• Add another market type: over/under for example
• Set results to bets
• pay out winnings
• Add a 2nd application (gradle subproject) that contains a secured GraphQL API for placing bets and other actions that require authentication.
• GraphQL subscriptions
• Make it update market_option.last_updated_at
• Entities (for JPA)
• Repositories
• Queries
• Mutations
• Import feeds from bets-api.com
• Bet should have several MarketOptions (long bet)
• Deploy somewhere
• scheduled update of completed events. Canceled events are now left non-completed.