feat: draft proxy contract

contracts/pyth-proxy-v1.clar

@@ -0,0 +1,44 @@
+
+;; VAA including some commands for administrating Pyth contract
+;; The oracle contract address must be upgraded
+(define-constant GOVERNANCE_UPGRADE_CONTRACT 0x)
+;; Emit a request for governance change 
+(define-constant GOVERNANCE_REQUEST_GOVERNANCE_DATA_SOURCE_TRANSFER 0x)
+;; Authorize governance change
+(define-constant GOVERNANCE_AUTHORIZE_GOVERNANCE_DATA_SOURCE_TRANSFER 0x)
+;; Which wormhole emitter is allowed to send price updates
+(define-constant GOVERNANCE_SET_DATA_SOURCE 0x)
+;; Fee is charged when you submit a new price
+(define-constant GOVERNANCE_SET_FEE 0x)
+;; Default amoutn of time considered to be "fresh". Can be ignored
+(define-constant GOVERNANCE_SET_VALID_PERIOD 0x)
+;; Wormhole contract 
+(define-constant GOVERNANCE_SET_WORMHOLE_ADDRESS 0x)
+
+(use-trait pyth-oracle-trait .pyth-oracle-trait.pyth-oracle-trait)
+(use-trait wormhole-core-trait .wormhole-core-trait.wormhole-core-trait)
+
+(define-data-var active-oracle-contract-address principal .pyth-oracle-v1)
+(define-data-var active-wormhole-core-address principal .wormhole-core-dev-preview-1)
+(define-data-var active-fee-recipient-address principal tx-sender)
+
+(define-public (read-price-feed 
+    (price-feed-id (buff 32)) 
+    (pyth-oracle-address <pyth-oracle-trait>))
+    (begin
+        ;; Ensure that the active contract is being invoke
+        (asserts! (is-eq (contract-of pyth-oracle-address) (var-get active-oracle-contract-address)) (err u0))
+        ;; Perform contract-call
+        (contract-call? pyth-oracle-address read-price-feed price-feed-id)))
+
+(define-public (verify-and-update-price-feeds 
+    (price-feed-bytes (buff 8192)) 
+    (pyth-oracle-address <pyth-oracle-trait>)
+    (wormhole-core-address <wormhole-core-trait>))
+    (begin
+        ;; Ensure that the active contract is being invoke
+        (asserts! (is-eq (contract-of pyth-oracle-address) (var-get active-oracle-contract-address)) (err u0))
+        ;; Ensure that the active contract is being invoke
+        (asserts! (is-eq (contract-of wormhole-core-address) (var-get active-wormhole-core-address)) (err u1))
+        ;; Perform contract-call
+        (contract-call? pyth-oracle-address verify-and-update-price-feeds price-feed-bytes wormhole-core-address)))