add fee option to route method and build swap method

Author: BboyStatix

src/routers/alpha-router/alpha-router.ts

@@ -120,6 +120,7 @@ import {
   SwapAndAddConfig,
   SwapAndAddOptions,
   SwapAndAddParameters,
+  SwapConfig,
   SwapOptions,
   SwapRoute,
   SwapToRatioResponse,
@@ -1082,7 +1083,7 @@ export class AlphaRouter
     amount: CurrencyAmount,
     quoteCurrency: Currency,
     tradeType: TradeType,
-    swapConfig?: SwapOptions,
+    swapConfig?: SwapConfig,
     partialRoutingConfig: Partial<AlphaRouterConfig> = {}
   ): Promise<SwapRoute | null> {
     const originalAmount = amount;

src/routers/router.ts

@@ -188,6 +188,8 @@ export type SwapOptionsSwapRouter02 = {
 
 export type SwapOptions = SwapOptionsUniversalRouter | SwapOptionsSwapRouter02;
 
+export type SwapConfig = SwapOptions & { fee?: { fee: Percent; recipient: string } };
+
 // Config passed in to determine configurations on acceptable liquidity
 // to add to a position and max iterations on the route-finding algorithm
 export type SwapAndAddConfig = {

src/util/methodParameters.ts

@@ -20,7 +20,7 @@ import {
   MixedRouteWithValidQuote,
   RouteWithValidQuote,
   SWAP_ROUTER_02_ADDRESSES,
-  SwapOptions,
+  SwapConfig,
   SwapType,
   V2RouteWithValidQuote,
   V3RouteWithValidQuote,
@@ -236,7 +236,7 @@ export function buildTrade<TTradeType extends TradeType>(
 
 export function buildSwapMethodParameters(
   trade: Trade<Currency, Currency, TradeType>,
-  swapConfig: SwapOptions,
+  swapConfig: SwapConfig,
   chainId: ChainId
 ): MethodParameters {
   if (swapConfig.type == SwapType.UNIVERSAL_ROUTER) {
@@ -245,7 +245,7 @@ export function buildSwapMethodParameters(
       to: UNIVERSAL_ROUTER_ADDRESS(chainId),
     };
   } else if (swapConfig.type == SwapType.SWAP_ROUTER_02) {
-    const { recipient, slippageTolerance, deadline, inputTokenPermit } =
+    const { recipient, slippageTolerance, deadline, inputTokenPermit, fee } =
       swapConfig;
 
     return {
@@ -254,6 +254,7 @@ export function buildSwapMethodParameters(
         slippageTolerance,
         deadlineOrPreviousBlockhash: deadline,
         inputTokenPermit,
+        fee
       }),
       to: SWAP_ROUTER_02_ADDRESSES(chainId),
     };