This project demonstrates how to implement authentication in Telegram bot using OpenId Connect (OIDC).

Implementation tools:

• Keycloak — open source Identity and Access Management solution (OpenId provider).
• Spring Boot — application framework.
• TelegramBots — library to create Telegram Bots in Java.
• ScribeJava — OAuth client Java library.
• Java JWT от Auth0 — Java implementation of JSON Web Token (JWT).

This demo comprises of two services:

• Telegram bot
• OpenId provider

Ensure you have JDK 11. To build the project run:

./mvnw package

Ensure you have Docker and Docker Compose installed.
Create file .env in project root directory using .env.template as a base. Specify correct values for the following entries:

• BASEURL: http://address:8080 where address is an IP address/domain name of your host.
• OIDC_KEYCLOAK_BASEURL: http://address:8180 where address is an IP address/domain name of your host (do not use localhost).
• BOT_USERNAME: name of your telegram bot.
• BOT_TOKEN: token of your telegram bot.

Ok. Now, run the demo using following command:

docker-compose up --build