feat(sdk-core): create message sign request

TICKET: COIN-4593

Author: bhavidhingra

modules/bitgo/test/v2/unit/wallet.ts

@@ -3467,14 +3467,24 @@ describe('V2 Wallet:', function () {
         nock.cleanAll();
       });
 
-      it('should throw error for unsupported coins', async function () {
-        await tssSolWallet
-          .signMessage({
-            reqId,
-            message: { messageRaw },
-            prv: 'secretKey',
-          })
-          .should.be.rejectedWith('Message signing not supported for Testnet Solana');
+      describe('should throw error for unsupported coins', function () {
+        it('sol signMessage', async function () {
+          await tssSolWallet
+            .signMessage({
+              reqId,
+              message: { messageRaw },
+              prv: 'secretKey',
+            })
+            .should.be.rejectedWith('Message signing not supported for Testnet Solana');
+        });
+
+        it('sol create signMessage tx request', async function () {
+          await tssSolWallet
+            .createSignMessageRequest({
+              message: messageRaw,
+            })
+            .should.be.rejectedWith('Message signing not supported for Testnet Solana');
+        });
       });
 
       messageSigningCoins.map((coinName) => {
@@ -3483,6 +3493,15 @@ describe('V2 Wallet:', function () {
         tssEthWallet = new Wallet(bitgo, bitgo.coin(coinName), ethWalletData);
         const txRequestId = txRequestForMessageSigning.txRequestId;
 
+        it('should create tx Request with signMessage intent', async function () {
+          nock(bgUrl).post(`/api/v2/wallet/${tssEthWallet.id()}/msgrequests`).reply(200, txRequestForMessageSigning);
+
+          const txRequest = await tssEthWallet.createSignMessageRequest({
+            message: messageRaw,
+          });
+          txRequest.should.deepEqual(txRequestForMessageSigning);
+        });
+
         it('should sign message', async function () {
           const signMessageTssSpy = sinon.spy(tssEthWallet, 'signMessageTss' as any);
           nock(bgUrl)

modules/sdk-core/src/bitgo/utils/tss/baseTSSUtils.ts

@@ -43,6 +43,7 @@ import { RequestTracer } from '../util';
 import * as openpgp from 'openpgp';
 import { envRequiresBitgoPubGpgKeyConfig, getBitgoMpcGpgPubKey } from '../../tss/bitgoPubKeys';
 import { getBitgoGpgPubKey } from '../opengpgUtils';
+import assert from 'assert';
 
 /**
  * BaseTssUtil class which different signature schemes have to extend
@@ -379,6 +380,30 @@ export default class BaseTssUtils<KeyShare> extends MpcUtils implements ITssUtil
     return this.createTxRequestBase(intentOptions, apiVersion, preview, params.reqId);
   }
 
+  /**
+   * Create a sign message request
+   *
+   * @param params
+   */
+  async createSignMessageRequest(params: IntentOptionsForMessage): Promise<TxRequest> {
+    assert(
+      params.intentType === 'signMessage',
+      'Intent type must be signMessage for createMsgRequestWithSignMessageIntent'
+    );
+    const intentOptions: PopulatedIntentForMessageSigning = {
+      custodianMessageId: params.custodianMessageId,
+      intentType: params.intentType,
+      sequenceId: params.sequenceId,
+      comment: params.comment,
+      memo: params.memo?.value,
+      isTss: params.isTss,
+      messageRaw: params.messageRaw,
+      messageEncoded: params.messageEncoded ?? '',
+    };
+
+    return this.createSignMessageRequestBase(intentOptions, params.reqId);
+  }
+
   /**
    * Create a tx request from params for type data signing
    *
@@ -432,6 +457,29 @@ export default class BaseTssUtils<KeyShare> extends MpcUtils implements ITssUtil
       .result();
   }
 
+  /**
+   * Calls Bitgo API to create msg request.
+   *
+   * @private
+   */
+  private async createSignMessageRequestBase(
+    intentOptions: PopulatedIntentForMessageSigning,
+    reqId?: IRequestTracer
+  ): Promise<TxRequest> {
+    const whitelistedParams = {
+      intent: {
+        ...intentOptions,
+      },
+    };
+
+    const reqTracer = reqId || new RequestTracer();
+    this.bitgo.setRequestTracer(reqTracer);
+    return this.bitgo
+      .post(this.bitgo.url(`/wallet/${this.wallet.id()}/msgrequests`, 2))
+      .send(whitelistedParams)
+      .result();
+  }
+
   /**
    * Call delete signature shares for a txRequest, the endpoint delete the signatures and return them
    *

modules/sdk-core/src/bitgo/wallet/wallet.ts

@@ -2093,6 +2093,49 @@ export class Wallet implements IWallet {
     return this.signMessageTss(presign);
   }
 
+  /**
+   * Prepares and creates a sign message request for TSS wallets, that can be used later for signing.
+   *
+   * @param params - Parameters for creating the sign message request
+   * @returns Promise<TxRequest> - The created transaction request for signing a message
+   */
+  async createSignMessageRequest(params: {
+    message: string;
+    custodianMessageId?: string;
+    reqId?: RequestTracer;
+  }): Promise<TxRequest> {
+    if (this._wallet.multisigType !== 'tss') {
+      throw new Error('Message signing only supported for TSS wallets');
+    }
+
+    if (!this.baseCoin.supportsMessageSigning()) {
+      throw new Error(`Message signing not supported for ${this.baseCoin.getFullName()}`);
+    }
+
+    if (!params.message) {
+      throw new Error('message required to create message sign request');
+    }
+
+    const reqId = params.reqId || new RequestTracer();
+
+    try {
+      const intentOption: IntentOptionsForMessage = {
+        custodianMessageId: params.custodianMessageId,
+        reqId,
+        intentType: 'signMessage',
+        isTss: true,
+        messageRaw: params.message,
+      };
+
+      if (!this.tssUtils) {
+        throw new Error('TSS utilities not available for this wallet');
+      }
+      return await this.tssUtils.createSignMessageRequest(intentOption);
+    } catch (error) {
+      throw new Error(`Failed to create message sign request: ${error}`);
+    }
+  }
+
   /**
    * Get the user private key from either a derivation or an encrypted keychain
    * @param [params.keychain / params.key] (object) or params.prv (string)