feat: Add-update_creation_fee

[ONEONUORA]

close #1031
close #1025
close #1022
close #1020

Summary of Changes

This PR implements several enhancements to the creator-event-manager contract:

1. Admin: Creation Fee Updates

• Goal: Allow the contract admin to adjust the event creation fee stored under DataKey::CreationFee(0) post-deployment.
• Implementation:
  • Added update_creation_fee(env, caller, new_fee) in src/admin.rs and wired it into src/lib.rs.
  • Enforces require_is_admin signature validation and rejects fees <= 0.
  • Emits an ("admin", "creation_fee_updated") event upon success.
• Tests: Added tests in tests/admin_tests.rs for admin authorization, immediate update reflection via get_creation_fee(), and strictly positive fee validation.

2. Match: Retrieve Single Match by ID

• Goal: Provide a way to fetch a single match by its globally unique match_id.
• Implementation:
  • Implemented get_match(env, match_id) -> Match in src/match.rs and wired it into src/lib.rs.
  • Added MatchNotFound error code to MatchError.
  • Loads match details from DataKey::Match(match_id) and extends the TTL on each read.
• Tests: Added tests in tests/match_tests.rs verifying successful match lookups, match_not_found panics, and storage TTL extension.

3. Prediction: Join Event Event Publication

• Goal: Publish a contract event on a successful participant join.
• Implementation:
  • Updated emit_user_joined in src/prediction.rs to publish a ("participant", "joined") event with the payload containing (event_id, user_address).
• Tests: Added tests in tests/prediction_tests.rs asserting exactly one matching event is published on a successful join, and failed joins (e.g. invalid invite code) emit no event.

4. Views: check Event Finalized view

• Goal: Provide a lightweight check to determine if an event is finalized without loading the full Event struct.
• Implementation:
  • Added is_event_finalized(env, event_id) -> bool in src/views.rs and wired it into src/lib.rs to retrieve only the is_finalized flag.
• Tests: Added tests in tests/views_tests.rs verifying view accuracy for active, cancelled, and finalized events, as well as event_not_found panic behavior.

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Verification Status

All contract unit and integration tests compile and pass successfully:

• Command: cargo test
• Result: ok. 248 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.11s

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Project	Deployment	Actions	Updated (UTC)
insight-arena-4rll	Ready	Preview, Comment	Jun 23, 2026 8:23pm

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