;; multi-token-transfer.clar
;; A contract that enables sending multiple SIP-010 tokens to a single recipient
;; Define the token trait
(define-trait ft-trait
(
;; Transfer from the caller to a new principal
(transfer (uint principal principal (optional (buff 34))) (response bool uint))
)
)
;; Error constants
(define-constant ERR-UNAUTHORIZED (err u1))
(define-constant ERR-EMPTY-LIST (err u2))
(define-constant ERR-TRANSFER-FAILED (err u3))
;; Main function to transfer multiple tokens to a single recipient
(define-public (send-multiple-token-by-token
(token1 <ft-trait>) (amount1 uint)
(token2 <ft-trait>) (amount2 uint)
(recipient principal))
(begin
(try! (contract-call? token1 transfer amount1 tx-sender recipient none))
(contract-call? token2 transfer amount2 tx-sender recipient none)
)
)
;; Function to transfer three tokens to a single recipient
(define-public (send-multiple-three-tokens
(token1 <ft-trait>) (amount1 uint)
(token2 <ft-trait>) (amount2 uint)
(token3 <ft-trait>) (amount3 uint)
(recipient principal))
(begin
(try! (contract-call? token1 transfer amount1 tx-sender recipient none))
(try! (contract-call? token2 transfer amount2 tx-sender recipient none))
(contract-call? token3 transfer amount3 tx-sender recipient none)
)
)
;; Function to transfer four tokens to a single recipient
(define-public (send-multiple-four-tokens
(token1 <ft-trait>) (amount1 uint)
(token2 <ft-trait>) (amount2 uint)
(token3 <ft-trait>) (amount3 uint)
(token4 <ft-trait>) (amount4 uint)
(recipient principal))
(begin
(try! (contract-call? token1 transfer amount1 tx-sender recipient none))
(try! (contract-call? token2 transfer amount2 tx-sender recipient none))
(try! (contract-call? token3 transfer amount3 tx-sender recipient none))
(contract-call? token4 transfer amount4 tx-sender recipient none)
)
)