Token Whitelist Logic

[Kaylahray]

User Story

As an Admin,
I want to only allow specific tokens (USDC, XLM) to prevent spam.

Description

A list of allowed token addresses.

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Files to Create/Edit

contracts/geev-core/src/
├── storage.rs
└── admin.rs

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Functional Requirements

• Storage: Map<TokenAddress, bool>.
• Check: Verify token is allowed during creation.

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Suggested Implementation

// IN FUNCTION: create_giveaway

// 1. Check storage for 'AllowedToken(token_address)'.
// 2. If false/missing, panic "TokenNotSupported".

// IN FUNCTION: add_token(env, token)
// 1. Admin auth.
// 2. Set 'AllowedToken(token)' to true.

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Acceptance Criteria

• Blocks unknown tokens.

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Submission Guidelines

• Branch: feat/token-whitelist