feat: add stablecoins for a2a bridging

api/_dexes/cross-swap-service.ts

@@ -79,7 +79,7 @@
 }
 
 // @TODO: Implement the following function
 export async function getCrossSwapQuotesForExactInput(crossSwap: CrossSwap) {
   throw new Error("Not implemented yet");
 }
 
@@ -376,7 +376,7 @@
   strategies: QuoteFetchStrategies
 ) {
   const preferredBridgeTokens = PREFERRED_BRIDGE_TOKENS;
-  const bridgeRoutesLimit = 1;
+  const bridgeRoutesLimit = 3;
 
   const originSwapChainId = crossSwap.inputToken.chainId;
   const destinationSwapChainId = crossSwap.outputToken.chainId;
@@ -409,7 +409,7 @@
     );
   }
 
-  const crossSwapQuotes = await Promise.all(
+  const crossSwapQuotesResults = await Promise.allSettled(
     bridgeRoutesToCompare.map((bridgeRoute) =>
       getCrossSwapQuotesForOutputByRouteA2A(
         crossSwap,
@@ -420,6 +420,16 @@
     )
   );
 
+  const crossSwapQuotes = crossSwapQuotesResults
+    .filter((result) => result.status === "fulfilled")
+    .map((result) => result.value);
+
+  if (crossSwapQuotes.length === 0) {
+    throw new Error(
+      `Failed to get quote for ${originSwapChainId} ${crossSwap.inputToken.symbol} -> ${destinationSwapChainId} ${crossSwap.outputToken.symbol}`
+    );
+  }
+
   // Compare quotes by lowest input amount
   const bestCrossSwapQuote = crossSwapQuotes.reduce((prev, curr) =>
     prev.originSwapQuote!.maximumAmountIn.lt(

api/_dexes/utils.ts

@@ -50,7 +50,7 @@ export const CROSS_SWAP_TYPE = {
   ANY_TO_ANY: "anyToAny",
 } as const;
 
-export const PREFERRED_BRIDGE_TOKENS = ["WETH"];
+export const PREFERRED_BRIDGE_TOKENS = ["WETH", "USDC", "USDT", "DAI"];
 
 export const defaultQuoteFetchStrategy: QuoteFetchStrategy =
   // This will be our default strategy until the periphery contract is audited