;; Title: pyth-oracle
;; Version: v3
;; Check for latest version: https://github.com/Trust-Machines/stacks-pyth-bridge#latest-version
;; Report an issue: https://github.com/Trust-Machines/stacks-pyth-bridge/issues
(use-trait pyth-storage-trait .pyth-traits-v1.storage-trait)
(use-trait pyth-decoder-trait .pyth-traits-v1.decoder-trait)
(use-trait wormhole-core-trait .wormhole-traits-v1.core-trait)
;; Balance insufficient for handling fee
(define-constant ERR_BALANCE_INSUFFICIENT (err u3001))
(define-public (get-price
(price-feed-id (buff 32))
(pyth-storage-address <pyth-storage-trait>))
(begin
;; Check execution flow
(try! (contract-call? .pyth-governance-v2 check-storage-contract pyth-storage-address))
;; Perform contract-call
(contract-call? pyth-storage-address read-price-with-staleness-check price-feed-id)))
(define-public (read-price-feed
(price-feed-id (buff 32))
(pyth-storage-address <pyth-storage-trait>))
(begin
;; Check execution flow
(try! (contract-call? .pyth-governance-v2 check-storage-contract pyth-storage-address))
;; Perform contract-call
(contract-call? pyth-storage-address read price-feed-id)))
(define-public (verify-and-update-price-feeds
(price-feed-bytes (buff 8192))
(execution-plan {
pyth-storage-contract: <pyth-storage-trait>,
pyth-decoder-contract: <pyth-decoder-trait>,
wormhole-core-contract: <wormhole-core-trait>
}))
(begin
;; Check execution flow
(try! (contract-call? .pyth-governance-v2 check-execution-flow contract-caller (some execution-plan)))
;; Perform contract-call
(let ((pyth-decoder-contract (get pyth-decoder-contract execution-plan))
(wormhole-core-contract (get wormhole-core-contract execution-plan))
(pyth-storage-contract (get pyth-storage-contract execution-plan))
(decoded-prices (try! (contract-call? pyth-decoder-contract decode-and-verify-price-feeds price-feed-bytes wormhole-core-contract)))
(updated-prices (try! (contract-call? pyth-storage-contract write decoded-prices)))
(fee-info (contract-call? .pyth-governance-v2 get-fee-info))
(fee-amount (* (len updated-prices) (* (get mantissa fee-info) (pow u10 (get exponent fee-info))))))
;; Charge fee
(if (> fee-amount u0)
(unwrap! (stx-transfer? fee-amount tx-sender (get address fee-info)) ERR_BALANCE_INSUFFICIENT)
true
)
(ok updated-prices))))
(define-public (decode-price-feeds
(price-feed-bytes (buff 8192))
(execution-plan {
pyth-storage-contract: <pyth-storage-trait>,
pyth-decoder-contract: <pyth-decoder-trait>,
wormhole-core-contract: <wormhole-core-trait>
}))
(begin
;; Check execution flow
(try! (contract-call? .pyth-governance-v2 check-execution-flow contract-caller (some execution-plan)))
;; Perform contract-call
(let ((pyth-decoder-contract (get pyth-decoder-contract execution-plan))
(wormhole-core-contract (get wormhole-core-contract execution-plan))
(decoded-prices (try! (contract-call? pyth-decoder-contract decode-and-verify-price-feeds price-feed-bytes wormhole-core-contract)))
(fee-info (contract-call? .pyth-governance-v2 get-fee-info))
(fee-amount (* (len decoded-prices) (* (get mantissa fee-info) (pow u10 (get exponent fee-info))))))
;; Charge fee
(if (> fee-amount u0)
(unwrap! (stx-transfer? fee-amount tx-sender (get address fee-info)) ERR_BALANCE_INSUFFICIENT)
true
)
(ok decoded-prices))))