An AWS Lambda function that sends a notification whenever a user in the group solves a new Leetcode question. Use it for interview group-study motivation!

• AWS CLI
• SAM CLI

The following configuration fields must be set in a cmd/lambda/config.json file. A template config is provided as config.example.json.

• profiles: list of leetcode IDs
• ntfy_topic: ntfy notificaton topic. All ntfy topics are public, so choose something that is not easily guessable

1. Build the project

   $ make
   

2. Deploy with SAM

• First time deployment

  $ sam deploy --guided
  

• Subsequent deployments

  $ sam deploy
  

• Install the ntfy app (iOS/Android/Desktop).
• Subscribe to the ntfy_topic configured in config.json

LeetSignal is intended only for collaborative, group-study, and motivational purposes.

• You may only add LeetCode usernames to your configuration if you have the explicit consent of the individuals being tracked.
• Using this project to monitor users without their knowledge or permission is STRICTLY prohibited.
• By deploying or using LeetSignal, you agree to use it responsibly and in compliance with this policy.

API data is provided by noworneverev/leetcode-api

LeetSignal uses the following AWS services and operates well under the free-tier limits for each service:

• Lambda: runs hourly
• Eventbridge: schedules/triggers lambda function
• CloudFormation: infrastructure as code service
• Cloudwatch: minimal logging
• AWS Parameter Store: storing number of solved Leetcodes between Lambda invocations