feat: added a user/signature query for internal use

packages/agents/nova/src/core/resources/user/dto/user-signature-query.dto.ts

@@ -0,0 +1,18 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsNotEmpty, IsString } from 'class-validator';
+
+export class UserSignatureQueryDto {
+  @IsString()
+  @IsNotEmpty()
+  @ApiProperty({
+    description: 'The private key of the user',
+  })
+  privateKey: string;
+
+  @IsString()
+  @IsNotEmpty()
+  @ApiProperty({
+    description: 'Typed data',
+  })
+  typedData: string;
+}

packages/agents/nova/src/core/resources/user/user.controller.ts

@@ -14,9 +14,13 @@ import { UserBalanceQueryDto } from './dto/user-balance-query.dto';
 import { UserBalanceResponseDto } from './dto/user-balance-response.dto';
 import { UserDataQueryDto } from './dto/user-data-query.dto';
 import { UserInitBodyDto } from './dto/user-init-body.dto';
-import { UserInitResponseDto, UserResponseDto } from './dto/user-init-response.dto';
+import {
+  UserInitResponseDto,
+  UserResponseDto,
+} from './dto/user-init-response.dto';
 import { UserSendTxBodyDto } from './dto/user-send-tx-body.dto';
 import { UserService } from './user.service';
+import { UserSignatureQueryDto } from './dto/user-signature-query.dto';
 
 @ApiTags('user')
 @Controller('user')
@@ -88,4 +92,20 @@ export class UserController {
   async sendTx(@Body() body: UserSendTxBodyDto): Promise<void> {
     return await this.userService.sendTx(body);
   }
+
+  /**
+   * Retrieves user sign tx
+   * @param {UserSignatureQueryDto} query - query params containing user wallet address and the way returned data should be arranged
+   * @returns userTokenBalance array
+   */
+  @HttpCode(HttpStatus.OK)
+  @ApiResponse({
+    status: HttpStatus.OK,
+    description: 'Get Signature',
+    type: UserSignatureQueryDto,
+  })
+  @Get('signature')
+  getSignature(@Query() query: UserSignatureQueryDto): Promise<string> {
+    return this.userService.getSignature(query);
+  }
 }

packages/agents/nova/src/core/resources/user/user.service.ts

@@ -22,14 +22,16 @@ import {
   signSafeTransaction,
   isSCWDeployed,
 } from '@qw/utils';
-import {JsonRpcProvider, parseUnits} from 'ethers';
+import { JsonRpcProvider, parseUnits } from 'ethers';
 import { ConfigService } from 'src/config/config.service';
 import { NovaConfig } from 'src/config/schema';
 import { UserBalanceQueryDto } from './dto/user-balance-query.dto';
 import { UserDataQueryDto } from './dto/user-data-query.dto';
 import { UserInitBodyDto } from './dto/user-init-body.dto';
 import { UserResponseDto } from './dto/user-init-response.dto';
 import { UserSendTxBodyDto } from './dto/user-send-tx-body.dto';
+import { ethers } from 'ethers';
+import { UserSignatureQueryDto } from './dto/user-signature-query.dto';
 
 @Injectable()
 export class UserService {
@@ -65,12 +67,28 @@ export class UserService {
     return resp.data;
   }
 
+  async getSignature(query: UserSignatureQueryDto): Promise<string> {
+    const wallet = new ethers.Wallet(query.privateKey);
+
+    const typedData = JSON.parse(query.typedData);
+
+    const signature = await wallet.signTypedData(
+      JSON.parse(typedData).domain,
+      { SafeTx: JSON.parse(typedData).types.SafeTx },
+      JSON.parse(typedData).message,
+    );
+    return signature;
+  }
+
   /**
    * This service is called by /user/init endpoint
    * It deploys the smart contract and initializes the user
    * @returns transaction
    */
-  async userInit({ signerAddress, provider }: UserInitBodyDto): Promise<UserResponseDto> {
+  async userInit({
+    signerAddress,
+    provider,
+  }: UserInitBodyDto): Promise<UserResponseDto> {
     const rpcUrl = Object.values(this.config.chains)[0].providers[0]; // RPC URL
 
     const gelatoApiKey = this.config.gelatoApiKey;