From aa9efd472dc76c6b434ecb87d95a8347573c65d8 Mon Sep 17 00:00:00 2001
From: Benjamin Patch <ben.patch@immutable.com>
Date: Thu, 20 Jul 2023 10:27:35 +1000
Subject: [PATCH] initial secondary fees config addition

---
 packages/internal/dex/sdk/src/config/index.ts        |  8 ++++++--
 .../internal/dex/sdk/src/errors/exchangeError.ts     |  6 ++++++
 packages/internal/dex/sdk/src/types/index.ts         | 12 ++++++++++++
 3 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/packages/internal/dex/sdk/src/config/index.ts b/packages/internal/dex/sdk/src/config/index.ts
index 35b62dcee0..6c0d586ddf 100644
--- a/packages/internal/dex/sdk/src/config/index.ts
+++ b/packages/internal/dex/sdk/src/config/index.ts
@@ -2,7 +2,7 @@ import { Environment, ImmutableConfiguration } from '@imtbl/config';
 import { IMMUTABLE_TESTNET_COMMON_ROUTING_TOKENS, TIMX_IMMUTABLE_TESTNET } from 'constants/tokens';
 import { ChainNotSupportedError, InvalidConfigurationError } from 'errors';
 import { IMMUTABLE_TESTNET_CHAIN_ID, IMMUTABLE_TESTNET_RPC_URL } from 'constants/chains';
-import { isValidNonZeroAddress } from 'lib';
+import { SecondaryFees, isValidNonZeroAddress } from 'lib';
 import { Chain, ExchangeModuleConfiguration, ExchangeOverrides } from '../types';
 
 export type ExchangeContracts = {
@@ -40,7 +40,7 @@ export const SUPPORTED_CHAIN_IDS_FOR_ENVIRONMENT: Record<Environment, Record<num
 
 function validateOverrides(overrides: ExchangeOverrides) {
   Object.entries(overrides).forEach(([key, value]) => {
-    if (!value) {
+    if (!value && key !== 'secondaryFees') {
       throw new InvalidConfigurationError(`Missing override: ${key}`);
     }
   });
@@ -62,6 +62,8 @@ export class ExchangeConfiguration {
 
   public chain: Chain;
 
+  public secondaryFees?: SecondaryFees;
+
   constructor({ chainId, baseConfig, overrides }: ExchangeModuleConfiguration) {
     this.baseConfig = baseConfig;
 
@@ -75,6 +77,8 @@ export class ExchangeConfiguration {
         nativeToken: overrides.nativeToken,
       };
 
+      this.secondaryFees = overrides.secondaryFees;
+
       return;
     }
 
diff --git a/packages/internal/dex/sdk/src/errors/exchangeError.ts b/packages/internal/dex/sdk/src/errors/exchangeError.ts
index ade0587ca7..fc9e7dbd75 100644
--- a/packages/internal/dex/sdk/src/errors/exchangeError.ts
+++ b/packages/internal/dex/sdk/src/errors/exchangeError.ts
@@ -56,6 +56,12 @@ export class ChainNotSupportedError extends ExchangeError {
   }
 }
 
+export class InvalidFeePrcntError extends ExchangeError {
+  constructor(feedPrcnt: number) {
+    super(`invalid fee percent: ${feedPrcnt}`, ExchangeErrorCode.INVALID_SLIPPAGE);
+  }
+}
+
 export class InvalidSlippageError extends ExchangeError {
   constructor(message: string) {
     super(message, ExchangeErrorCode.INVALID_SLIPPAGE);
diff --git a/packages/internal/dex/sdk/src/types/index.ts b/packages/internal/dex/sdk/src/types/index.ts
index 7bede060c9..db99bd8b03 100644
--- a/packages/internal/dex/sdk/src/types/index.ts
+++ b/packages/internal/dex/sdk/src/types/index.ts
@@ -18,6 +18,17 @@ export type Chain = {
   nativeToken: TokenInfo;
 };
 
+/**
+ * Interface representing the secondary fees for a swap
+ * @property {string[]} feeRecipients - The fee recipient addresses
+ * @property {ethers.BigNumber[]} feePrcntsInBasisPoints - The fee percentages in basis points
+ * @example [100, 200, 300] would represent 1%, 2%, and 3% respectively
+ */
+export type SecondaryFees = {
+  feeRecipients: string[];
+  feePrcntsInBasisPoints: ethers.BigNumber[];
+};
+
 /**
  * Interface representing an amount with the token information
  * @property {TokenInfo} token - The token information
@@ -83,6 +94,7 @@ export interface ExchangeOverrides {
   exchangeContracts: ExchangeContracts;
   commonRoutingTokens: TokenInfo[];
   nativeToken: TokenInfo;
+  secondaryFees?: SecondaryFees;
 }
 
 export interface ExchangeModuleConfiguration