Backend Prize Module

[kiritowu]

Overview

Implement backend functions for prizes to be created, deleted, drawed and redeemed by user

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To-Do

• [x] Endpoint for prize to be created
• [x] Endpoint to display all prizes
• [x] Endpoint for prize to be deleted
• [x] Endpoint for prize to be drawed (i.e. gacha draw)
• [x] Endpoint for prize to be redeemed

Acceptance Criteria

• [x] Complete and test all backend endpoint for prizes.
• [x] Ensure that when drawing process is done, user's stamp value is removed accordingly

[kiritowu]

At the moment, current method of deciding the prizes is simple rule-based approach whereby

if probability < 0.95:
    return oneof normalPrize
else:
    return oneof rarePrize

I am also looking at other sampling approach like rejection sampling, weighted random selection. Not too sure which one to go with for now.