Add status to relay-specific errors

src/domain/relay/errors/invalid-multisend.error.ts

@@ -1,7 +1,10 @@
-export class InvalidMultiSendError extends Error {
+import { HttpException, HttpStatus } from '@nestjs/common';
+
+export class InvalidMultiSendError extends HttpException {
   constructor() {
     super(
       'Invalid multiSend call. The batch is not all execTransaction calls to same address.',
+      HttpStatus.UNPROCESSABLE_ENTITY,
     );
   }
 }

src/domain/relay/errors/invalid-transfer.error.ts

@@ -1,7 +1,10 @@
-export class InvalidTransferError extends Error {
+import { HttpException, HttpStatus } from '@nestjs/common';
+
+export class InvalidTransferError extends HttpException {
   constructor() {
     super(
       'Invalid transfer. The proposed transfer is not an execTransaction/multiSend to another party or createProxyWithNonce call.',
+      HttpStatus.UNPROCESSABLE_ENTITY,
     );
   }
 }

src/domain/relay/errors/relay-limit-reached.error.ts

@@ -1,13 +1,15 @@
+import { HttpException, HttpStatus } from '@nestjs/common';
 import { Hex } from 'viem';
 
-export class RelayLimitReachedError extends Error {
+export class RelayLimitReachedError extends HttpException {
   constructor(
     readonly address: Hex,
     readonly current: number,
     readonly limit: number,
   ) {
     super(
       `Relay limit reached for ${address} | current: ${current} | limit: ${limit}`,
+      HttpStatus.TOO_MANY_REQUESTS,
     );
   }
 }

src/domain/relay/errors/unofficial-master-copy.error.ts

@@ -1,7 +1,10 @@
-export class UnofficialMasterCopyError extends Error {
+import { HttpException, HttpStatus } from '@nestjs/common';
+
+export class UnofficialMasterCopyError extends HttpException {
   constructor() {
     super(
       'Safe attempting to relay is not official. Only official Safe singletons are supported.',
+      HttpStatus.UNPROCESSABLE_ENTITY,
     );
   }
 }

src/domain/relay/errors/unofficial-multisend.error.ts

@@ -1,7 +1,10 @@
-export class UnofficialMultiSendError extends Error {
+import { HttpException, HttpStatus } from '@nestjs/common';
+
+export class UnofficialMultiSendError extends HttpException {
   constructor() {
     super(
       'MultiSend contract is not official. Only official MultiSend contracts are supported.',
+      HttpStatus.UNPROCESSABLE_ENTITY,
     );
   }
 }

src/domain/relay/errors/unofficial-proxy-factory.error.ts

@@ -1,7 +1,10 @@
-export class UnofficialProxyFactoryError extends Error {
+import { HttpException, HttpStatus } from '@nestjs/common';
+
+export class UnofficialProxyFactoryError extends HttpException {
   constructor() {
     super(
       'ProxyFactory contract is not official. Only official ProxyFactory contracts are supported.',
+      HttpStatus.UNPROCESSABLE_ENTITY,
     );
   }
 }