Write the raffle realm

[moul]

Objective

Develop the raffle realm to facilitate a transparent and verifiable raffle mechanism. The aim is to operate primarily on-chain, but we should consider off-chain solutions as a backup.

Requirements

1. gno.land/r/demo/chess Realm Enhancements:

• On-chain Metrics Fetching:
  • Add a call to fetch a list of players, the number of finished games, the number of won games, and the count of moves.
  • Design for read-optimized calls. While write operations can bear slightly higher costs, the emphasis should be on efficient read operations.
  • To prevent overwhelming the system, either optimize for a large number of accounts or implement a pagination mechanism. Given that this is a primary realm, all enhancements should be finalized before the competition begins.

2. New Realm: demo/manual-rewards:

• Manual Points Entry:
  • Allow whitelisted staff wallets to add entries. Each entry should record the address, associated points, and the reason for the reward.
  • This mechanism will be used to manually reward points during workshops or to acknowledge other notable contributions.

3. Development of demo/raffle Realm:

• Import Data:
  • Fetch data from both demo/chess and demo/manual-rewards.
• First call: Snapshot metrics:
  • An exclusive call for admins to compute scores based on live data from the other realms. Results should be saved persistently in a global variable.
• Second call: Raffle computing:
  • Use a blend of hard-to-predict metrics (like height, timestamp, moves count, player data, etc.) to derive a seed for the raffle.
  • Ensure this method upholds fairness and randomness.
• Result Rendering:
  • Develop a render function that displays:
    1. The computed numbers (from the first call).
    2. The winners of the raffle (from the second call).

Conclusion

While our primary focus is a fully on-chain solution, we should be adaptable and ready to pivot if needed. Timely completion, especially for primary realms, is essential to ensure a smooth competition experience for participants.