From 83ca94cdb04a458e8f26e227a7884424f8dbf230 Mon Sep 17 00:00:00 2001
From: Paul <108695806+pxrl@users.noreply.github.com>
Date: Wed, 2 Apr 2025 07:58:19 +0000
Subject: [PATCH] improve(NetworkUtils): Use constants CCTP information

---
 src/constants.ts          |  2 ++
 src/utils/NetworkUtils.ts | 45 +++++++++++----------------------------
 2 files changed, 15 insertions(+), 32 deletions(-)

diff --git a/src/constants.ts b/src/constants.ts
index ad67b5bf2..7b6391c77 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -2,10 +2,12 @@ import { constants as ethersConstants } from "ethers";
 import { CHAIN_IDs, TOKEN_SYMBOLS_MAP } from "@across-protocol/constants";
 
 export {
+  CCTP_NO_DOMAIN,
   ChainFamily,
   CHAIN_IDs,
   MAINNET_CHAIN_IDs,
   PUBLIC_NETWORKS,
+  PRODUCTION_NETWORKS,
   TESTNET_CHAIN_IDs,
   TOKEN_SYMBOLS_MAP,
 } from "@across-protocol/constants";
diff --git a/src/utils/NetworkUtils.ts b/src/utils/NetworkUtils.ts
index 7d8aa4836..551415391 100644
--- a/src/utils/NetworkUtils.ts
+++ b/src/utils/NetworkUtils.ts
@@ -1,4 +1,12 @@
-import { ChainFamily, CHAIN_IDs, MAINNET_CHAIN_IDs, PUBLIC_NETWORKS, TESTNET_CHAIN_IDs } from "../constants";
+import {
+  CCTP_NO_DOMAIN,
+  ChainFamily,
+  CHAIN_IDs,
+  MAINNET_CHAIN_IDs,
+  PRODUCTION_NETWORKS,
+  PUBLIC_NETWORKS,
+  TESTNET_CHAIN_IDs,
+} from "../constants";
 
 export const hreNetworks: Record<number, string> = {
   666: "Hardhat1",
@@ -88,24 +96,6 @@ export function chainIsArbitrum(chainId: number): boolean {
   return [CHAIN_IDs.ARBITRUM, CHAIN_IDs.ARBITRUM_SEPOLIA].includes(chainId);
 }
 
-/**
- * Determines whether a chain ID is an Aleph0 implementation
- * @param chainId Chain ID to evaluate
- * @returns True if chainId is an Aleph0 chain, otherwise false.
- */
-export function chainIsAlephZero(chainId: number): boolean {
-  return [CHAIN_IDs.ALEPH_ZERO].includes(chainId);
-}
-
-/**
- * Determines whether a chain ID is a Lens implementation
- * @param chainId Chain ID to evaluate
- * @returns True if chainId is a Lens chain, otherwise false.
- */
-export function chainIsLens(chainId: number): boolean {
-  return [CHAIN_IDs.LENS_SEPOLIA].includes(chainId);
-}
-
 /**
  * Determines whether a chain ID is a Linea implementation.
  * @param chainId Chain ID to evaluate.
@@ -149,19 +139,10 @@ export function chainIsSvm(chainId: number): boolean {
  * @returns True if chainId is a CCTP-bridging enabled chain, otherwise false.
  */
 export function chainIsCCTPEnabled(chainId: number): boolean {
-  return [
-    // Mainnets
-    CHAIN_IDs.ARBITRUM,
-    CHAIN_IDs.BASE,
-    CHAIN_IDs.OPTIMISM,
-    CHAIN_IDs.POLYGON,
-    CHAIN_IDs.UNICHAIN,
-    // Testnets
-    CHAIN_IDs.BASE_SEPOLIA,
-    CHAIN_IDs.OPTIMISM_SEPOLIA,
-    CHAIN_IDs.ARBITRUM_SEPOLIA,
-    CHAIN_IDs.POLYGON_AMOY,
-  ].includes(chainId);
+  // Add chainIds to cctpExceptions to administratively disable CCTP on a chain.
+  // This is useful if constants has been updated to specify a CCTP domain in advance of it being activated.
+  const cctpExceptions: number[] = [];
+  return PRODUCTION_NETWORKS[chainId]?.cctpDomain !== CCTP_NO_DOMAIN && !cctpExceptions.includes(chainId);
 }
 
 /**