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FlunksGumDrop

// FlunksGumDrop.cdc // Production-ready GumDrop contract for special events // This contract allows Flunk NFT holders to claim special GUM rewards during limited-time events access(all) contract FlunksGumDrop { // Event emitted when a user claims their GumDrop access(all) event GumDropClaimed(user: Address, amount: UInt64, timestamp: UFix64) // Event emitted when the drop window changes access(all) event DropWindowUpdated(startTime: UFix64, endTime: UFix64, isActive: Bool) // Storage paths access(all) let AdminStoragePath: StoragePath // Contract state access(all) var dropStartTime: UFix64 access(all) var dropEndTime: UFix64 access(all) var gumAmountPerFlunk: UInt64 access(all) var dropActive: Bool // Track who has claimed (address -> claimed timestamp) access(self) let claimRecord: {Address: UFix64} // Admin resource for managing drops access(all) resource Admin { // Start a new GumDrop event access(all) fun startDrop(startTime: UFix64, endTime: UFix64, gumPerFlunk: UInt64) { pre { endTime > startTime: "End time must be after start time" gumPerFlunk > 0: "GUM amount must be positive" } FlunksGumDrop.dropStartTime = startTime FlunksGumDrop.dropEndTime = endTime FlunksGumDrop.gumAmountPerFlunk = gumPerFlunk FlunksGumDrop.dropActive = true emit DropWindowUpdated(startTime: startTime, endTime: endTime, isActive: true) } // End the current drop access(all) fun endDrop() { FlunksGumDrop.dropActive = false emit DropWindowUpdated(startTime: 0.0, endTime: 0.0, isActive: false) } // Reset a user's claim (emergency only) access(all) fun resetUserClaim(user: Address) { let removed = FlunksGumDrop.claimRecord.remove(key: user) } } // Check if drop is currently active access(all) view fun checkDropActive(): Bool { let now = getCurrentBlock().timestamp return self.dropActive && now >= self.dropStartTime && now <= self.dropEndTime } // Get remaining time in seconds access(all) view fun getTimeRemaining(): UFix64 { if !self.checkDropActive() { return 0.0 } let now = getCurrentBlock().timestamp if now >= self.dropEndTime { return 0.0 } return self.dropEndTime - now } // Check if user is eligible to claim access(all) view fun isEligibleForGumDrop(user: Address): Bool { // User is eligible if: // 1. Drop is active // 2. They haven't claimed yet // 3. They own at least one Flunk NFT (checked in frontend/API) return self.checkDropActive() && self.claimRecord[user] == nil } // Get drop info access(all) view fun getGumDropInfo(): {String: AnyStruct} { let now = getCurrentBlock().timestamp let active = self.checkDropActive() return { "isActive": active, "startTime": self.dropStartTime, "endTime": self.dropEndTime, "timeRemaining": active ? self.getTimeRemaining() : 0.0, "gumPerFlunk": self.gumAmountPerFlunk, "currentTime": now } } // Claim GumDrop - records on-chain that user claimed access(all) fun claimGumDrop(user: Address) { pre { self.checkDropActive(): "No active GumDrop event" self.claimRecord[user] == nil: "Already claimed this drop" } // Record the claim let now = getCurrentBlock().timestamp self.claimRecord[user] = now // Emit event (actual GUM crediting happens via Supabase API) emit GumDropClaimed(user: user, amount: self.gumAmountPerFlunk, timestamp: now) } // Get user's claim status access(all) view fun getUserClaimTime(user: Address): UFix64? { return self.claimRecord[user] } init() { // Set storage paths self.AdminStoragePath = /storage/FlunksGumDropAdmin // Initialize with no active drop self.dropStartTime = 0.0 self.dropEndTime = 0.0 self.gumAmountPerFlunk = 100 self.dropActive = false self.claimRecord = {} // Create and store admin resource let admin <- create Admin() self.account.storage.save(<-admin, to: self.AdminStoragePath) } }