;; This contract implements the SIP-010 community-standard Fungible Token trait.
(impl-trait 'SP3FBR2AGK5H9QBDH3EEN6DF8EK8JY7RX8QJ5SVTE.sip-010-trait-ft-standard.sip-010-trait)
;; Define the FT, with no maximum supply
(define-fungible-token odin)
;; Define errors
(define-constant ERR_OWNER_ONLY (err u100))
(define-constant ERR_NOT_TOKEN_OWNER (err u101))
;; Define constants for contract
(define-constant CONTRACT_OWNER tx-sender)
(define-constant TOKEN_URI u"https://token-metadat.s3.eu-central-1.amazonaws.com/asset.json") ;; utf-8 string with token metadata host
(define-constant TOKEN_NAME "Odin")
(define-constant TOKEN_SYMBOL "ODIN")
(define-constant TOKEN_DECIMALS u6) ;; 6 units displayed past decimal, e.g. 1.000_000 = 1 token
;; SIP-010 function: Get the token balance of a specified principal
(define-read-only (get-balance (who principal))
(ok (ft-get-balance odin who))
)
;; SIP-010 function: Returns the total supply of fungible token
(define-read-only (get-total-supply)
(ok (ft-get-supply odin))
)
;; SIP-010 function: Returns the human-readable token name
(define-read-only (get-name)
(ok TOKEN_NAME)
)
;; SIP-010 function: Returns the symbol or "ticker" for this token
(define-read-only (get-symbol)
(ok TOKEN_SYMBOL)
)
;; SIP-010 function: Returns number of decimals to display
(define-read-only (get-decimals)
(ok TOKEN_DECIMALS)
)
;; SIP-010 function: Returns the URI containing token metadata
(define-read-only (get-token-uri)
(ok (some TOKEN_URI))
)
;; SIP-010 function: Transfers tokens to a recipient
;; Sender must be the same as the caller to prevent principals from transferring tokens they do not own.
(define-public (transfer
(amount uint)
(sender principal)
(recipient principal)
(memo (optional (buff 34)))
)
(begin
;; #[filter(amount, recipient)]
(asserts! (is-eq tx-sender sender) ERR_NOT_TOKEN_OWNER)
(try! (ft-transfer? odin amount sender recipient))
(match memo to-print (print to-print) 0x)
(ok true)
)
)
;; ---------------------------------------------------------
;; Utility Functions
;; ---------------------------------------------------------
(define-public (send-many (recipients (list 200 { to: principal, amount: uint, memo: (optional (buff 34)) })))
(fold check-err (map send-token recipients) (ok true))
)
(define-private (check-err (result (response bool uint)) (prior (response bool uint)))
(match prior ok-value result err-value (err err-value))
)
(define-private (send-token (recipient { to: principal, amount: uint, memo: (optional (buff 34)) }))
(send-token-with-memo (get amount recipient) (get to recipient) (get memo recipient))
)
(define-private (send-token-with-memo (amount uint) (to principal) (memo (optional (buff 34))))
(let ((transferOk (try! (transfer amount tx-sender to memo))))
(ok transferOk)
)
)
;; Mint new tokens and send them to a recipient.
;; Only the contract deployer can perform this operation.
(begin
(ft-mint? odin u21000000000000000000 CONTRACT_OWNER)
)