feat: add handler for any pair

sdk/sdk-common/src/common/utils/TokenUtils.ts

@@ -0,0 +1,5 @@
+import { IToken } from "../interfaces/IToken";
+
+export function isSameTokens(a: IToken, b: IToken): boolean {
+  return a.address === b.address && a.chainInfo.chainId === b.chainInfo.chainId
+}

sdk/sdk-common/src/common/utils/index.ts

@@ -1,2 +1,3 @@
 export * from './PositionUtils'
 export * from './PercentageUtils'
+export * from './TokenUtils'

sdk/sdk-server/src/handlers/getRefinanceSimulation.ts

@@ -3,12 +3,19 @@ import type { ISimulation, SimulationType } from '@summerfi/sdk-common/simulatio
 import {
   refinanceLendingToLendingSamePair,
   type IRefinanceDependencies,
+  refinanceLendingToLendingAnyPair,
 } from '@summerfi/simulator-service/strategies'
 import type { IRefinanceParameters } from '@summerfi/sdk-common/orders'
 import { publicProcedure } from '../TRPC'
+import { isSameTokens } from '@summerfi/sdk-common/common'
 
 const inputSchema = z.custom<IRefinanceParameters>((parameters) => parameters !== undefined)
 
+function isToSamePair(parameters: IRefinanceParameters): boolean {
+  return isSameTokens(parameters.sourcePosition.debtAmount.token, parameters.targetPosition.debtAmount.token) && 
+  isSameTokens(parameters.sourcePosition.collateralAmount.token, parameters.targetPosition.collateralAmount.token)
+}
+
 export const getRefinanceSimulation = publicProcedure
   .input(inputSchema)
   .query(async (opts): Promise<ISimulation<SimulationType.Refinance>> => {
@@ -19,5 +26,10 @@ export const getRefinanceSimulation = publicProcedure
       protocolManager: opts.ctx.protocolManager,
     }
 
-    return await refinanceLendingToLendingSamePair(args, dependencies)
+    // TODO: in the end we should use just any pair
+    if (isToSamePair(opts.input)) {
+      return refinanceLendingToLendingSamePair(args, dependencies)
+    }
+
+    return refinanceLendingToLendingAnyPair(args, dependencies)
   })