;; ---------------------------------------------------------
;; SIP-10 Fungible Token Contract For Bonding Curve | Created on: stx.city/bonding-curve/create
;; ---------------------------------------------------------
;; Errors
(define-constant ERR-UNAUTHORIZED u401)
(define-constant ERR-NOT-OWNER u402)
(define-constant ERR-INVALID-PARAMETERS u403)
(define-constant ERR-NOT-ENOUGH-FUND u101)
(impl-trait .sip-010-trait-ft-standard.sip-010-trait)
;; Constants
(define-constant MAXSUPPLY u10000000000000000)
;; Variables
(define-fungible-token FAIR MAXSUPPLY)
(define-data-var contract-owner principal tx-sender)
;; SIP-10 Functions
(define-public (transfer (amount uint) (from principal) (to principal) (memo (optional (buff 34))))
(begin
(asserts! (is-eq from tx-sender) (err ERR-UNAUTHORIZED))
(ft-transfer? FAIR amount from to)
)
)
;; DEFINE METADATA
(define-data-var token-uri (optional (string-utf8 256)) (some u"https://gaia.hiro.so/hub/1M19CV7cuRSEWzdfxAhiq6KSkDqHEqfoJt/fair-0-decimals.json"))
(define-public (set-token-uri (value (string-utf8 256)))
(begin
(asserts! (is-eq tx-sender (var-get contract-owner)) (err ERR-UNAUTHORIZED))
(var-set token-uri (some value))
(ok (print {
notification: "token-metadata-update",
payload: {
contract-id: (as-contract tx-sender),
token-class: "ft"
}
})
)
)
)
(define-read-only (get-balance (owner principal))
(ok (ft-get-balance FAIR owner))
)
(define-read-only (get-name)
(ok "Fair")
)
(define-read-only (get-symbol)
(ok "FAIR")
)
(define-read-only (get-decimals)
(ok u6)
)
(define-read-only (get-total-supply)
(ok (ft-get-supply FAIR))
)
(define-read-only (get-token-uri)
(ok (var-get token-uri))
)
;; transfer ownership
(define-public (transfer-ownership (new-owner principal))
(begin
;; Checks if the sender is the current owner
(if (is-eq tx-sender (var-get contract-owner))
(begin
;; Sets the new owner
(var-set contract-owner new-owner)
;; Returns success message
(ok "Ownership transferred successfully"))
;; Error if the sender is not the owner
(err ERR-NOT-OWNER)))
)
;; ---------------------------------------------------------
;; 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)
)
)
(define-private (send-stx (recipient principal) (amount uint))
(begin
(try! (stx-transfer? amount tx-sender recipient))
(ok true)
)
)
;; ---------------------------------------------------------
;; Mint
;; ---------------------------------------------------------
(begin
(try! (ft-mint? FAIR u10000000000000000 (var-get contract-owner)))
)
