☝️ the app link
Our orginal build/commits are based in a private repo due to devs nda policys from current employment
Front end is built with React and TypeScript, it uses Tailwind for css.
Back End is built with NodeJs, TypeScript and MongoDB.
Each user has to pay a gateway fee of 2XRP in order to use the application, we track this information in a Users table where the unique field is the Ripple address.
Each challenge is saved as a document in the Challenges table, which can be configurable:
- Recurrent or one-time
- A fixed amount or a percentage based on user's holding
- A faucet or media type
- For the faucet one, it accepts a list of URL segments with which will check whether the submitted link is valid or not.
Each payment is also saved in a Payments table, to track the payment's status: PENDING, COMPLETED or DECLINED.
The declined reason is also stored in the table for debugging/monitoring purposes.
Payments are processed in a queue, one every minute, in paymentProcessor.ts. Before paying the reward, the validation checks are run again, to avoid paying double or paying when not all conditions are met.
The authentication process is:
- User requests the authentication which creates a SSE
- Back End creates the Xumm payload and saves the client response mapped with the TransactionUUID.
- After the user authenticates via Xumm, the webhook request is hit. The BE sends a event message to the FE notifying that the client logged in successfully.
For opening the trustline or paying the gate fee, the process is very similar. As in a SSE is used in order to wait for the transaction to be completed.
We use AdminJS to have an automatically generated admin dashboard through which we can add new challenges and also inspect all the payments created.