feat: Add promo code activation and history endpoints #53
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This commit introduces two new endpoints for user interactions with promo codes:
POST /api/user/promo/{id}/activate: Allows an authenticated user to activate a specific promo code. The activation is subject to several validation checks, including promo targeting rules (age, country), promo activity status, and a new anti-fraud service verification.GET /api/user/promo/history: Retrieves a paginated list of promo codes that the current user has previously activated.Key changes include:
PromoActivateViewthat handles the logic for activating a promo code, including validation and atomic updates to the promo's usage count or unique code status.PromoHistoryViewto display the user's activation history.antifraud_servicemodule to communicate with an external anti-fraud system, complete with caching and retry logic.PromoActivationHistorymodel to log each successful activation, linking users to the promos they've activated.UserPromoDetailSerializerto include anis_activated_by_userfield, indicating if the user has already activated the promo.user/urls.pyto route to the new views.