Create empty tx files && fix backend format to fetch the price of pyth to 'solana'

Author: AgustinBadi

backend/controllers/controller.ts

@@ -14,7 +14,7 @@ const PYTH_URLS = [
 const pythRequestBody = {
   symbols: ["Crypto.ADA/USD"],
   properties: ["price", "confidence", "exponent", "publisherCount"],
-  formats: ["leEcdsa"],
+  formats: ["solana"],
   channel: "fixed_rate@200ms",
   parsed: true,
   jsonBinaryEncoding: "hex",
@@ -64,7 +64,7 @@ export const getADAPriceFromPyth = async (req: Request, res: Response) => {
       confidence,
       publishers: feed.publisherCount,
       timestamp,
-      leEcdsaPayload: data.leEcdsa?.data ?? null,
+      solanaPayload: data.solana?.data ?? null,
     });
 
   } catch (error: any) {
@@ -115,7 +115,7 @@ export const getADAPriceRangeFromPyth = async (req: Request, res: Response) => {
           fetchWithFallback("/price", {
             symbols: ["Crypto.ADA/USD"],
             properties: ["price", "confidence", "exponent"],
-            formats: ["leEcdsa"],
+            formats: ["solana"],
             channel: "fixed_rate@200ms",
             parsed: true,
             jsonBinaryEncoding: "hex",
@@ -174,7 +174,7 @@ export const getADAPriceHistoryFromPyth = async (req: Request, res: Response) =>
     const data = await fetchWithFallback("/price", {
       symbols: ["Crypto.ADA/USD"],
       properties: ["price", "confidence", "exponent", "publisherCount"],
-      formats: ["leEcdsa"],
+      formats: ["solana"],
       channel: "fixed_rate@200ms",
       parsed: true,
       jsonBinaryEncoding: "hex",
@@ -193,7 +193,7 @@ export const getADAPriceHistoryFromPyth = async (req: Request, res: Response) =>
       publishers: feed.publisherCount,
       timestamp_requested: new Date(Number(timestamp) * 1000).toISOString(),
       timestamp_actual: timestamp_iso,
-      leEcdsaPayload: data.leEcdsa?.data ?? null,
+      solanaPayload: data.solana?.data ?? null,
     });
 
   } catch (error: any) {

frontend/src/tx/burn.ts

@@ -0,0 +1 @@
+// TODO: implement buildBurnTx

frontend/src/tx/liquidate.ts

@@ -0,0 +1 @@
+// TODO: implement buildLiquidateTx

frontend/src/tx/mint.ts

@@ -49,7 +49,7 @@ function getScript() {
  *
  * @param wallet         Connected CIP-30 browser wallet (MeshSDK BrowserWallet)
  * @param adaToDeposit   ADA amount the user wants to deposit (in lovelaces)
- * @param pythHex        Signed Pyth price message (leEcdsaPayload from backend)
+ * @param pythHex        Signed Pyth price message (solanaPayload from backend)
  * @param adaUsdPrice    Current ADA/USD price as a float (e.g. 0.70)
  * @param blockfrostKey  Blockfrost preprod project ID
  * @returns              Submitted transaction hash
@@ -99,9 +99,8 @@ export async function buildMintTx(
   const mintRedeemer = mConStr0([]);
 
   // Pyth withdraw redeemer — List<ByteArray> with the signed price message.
-  // NOTE: the on-chain Pyth library expects the Solana wire format (magic b9011a82).
-  //       The backend currently returns leEcdsaPayload — swap to solana format
-  //       once the backend requests formats: ["solana"].
+  // The backend now returns solanaPayload (Solana wire format, magic b9011a82),
+  // which is what the on-chain Pyth library expects.
   const pythRedeemer = mList([mBytes(pythHex)]);
 
   const col = collateral[0];