defi-swap-basic

;; defi-swap-basic.clar
;; Conceptual AMM swap

(define-data-var pool-token-a uint u1000000)
(define-data-var pool-token-b uint u1000000)

(define-read-only (get-price)
    (ok (/ (var-get pool-token-b) (var-get pool-token-a)))
)

;; In a real contract, this would transfer tokens. 
;; Here, we simulate the state change for educational/demo purposes.
(define-public (swap-a-for-b (amount-a uint))
    (let (
        (amount-b (/ (* amount-a (var-get pool-token-b)) (+ (var-get pool-token-a) amount-a)))
    )
        (var-set pool-token-a (+ (var-get pool-token-a) amount-a))
        (var-set pool-token-b (- (var-get pool-token-b) amount-b))
        (ok amount-b)
    )
)