adding sign-in flow for totp

Author: bhparijat

packages/auth/.changeset/README.md

@@ -0,0 +1,8 @@
+# Changesets
+
+Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
+with multi-package repos, or single-package repos to help you version and publish your code. You can
+find the full documentation for it [in our repository](https://github.com/changesets/changesets)
+
+We have a quick list of common questions to get you started engaging with this project in
+[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)

packages/auth/.changeset/brown-books-report.md

@@ -0,0 +1,2 @@
+---
+---

packages/auth/.changeset/config.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://unpkg.com/@changesets/[email protected]/schema.json",
+  "changelog": "@changesets/cli/changelog",
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "restricted",
+  "baseBranch": "master",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}

packages/auth/.changeset/twenty-carrots-end.md

@@ -0,0 +1,5 @@
+---
+'@firebase/auth': patch
+---
+
+Totp-work

packages/auth/src/api/authentication/mfa.ts

@@ -23,7 +23,7 @@ import {
 } from '../index';
 import { Auth } from '../../model/public_types';
 import { IdTokenResponse } from '../../model/id_token';
-import { MfaEnrollment } from '../account_management/mfa';
+import { FinalizeTotpMfaEnrollmentRequest, MfaEnrollment, TotpVerificationInfo } from '../account_management/mfa';
 import { SignInWithIdpResponse } from './idp';
 import {
   SignInWithPhoneNumberRequest,
@@ -79,8 +79,16 @@ export interface FinalizePhoneMfaSignInRequest {
   tenantId?: string;
 }
 
+export interface FinalizeTotpMfaSignInRequest {
+  mfaPendingCredential: string;
+  totpVerificationInfo: TotpVerificationInfo;
+  tenantId?: string;
+}
+
 export interface FinalizePhoneMfaSignInResponse extends FinalizeMfaResponse {}
 
+export interface FinalizeTotpMfaSignInResponse extends FinalizeMfaResponse {}
+
 export function finalizeSignInPhoneMfa(
   auth: Auth,
   request: FinalizePhoneMfaSignInRequest
@@ -96,6 +104,21 @@ export function finalizeSignInPhoneMfa(
   );
 }
 
+export function finalizeSignInTotpMfa(
+  auth:Auth,
+  request: FinalizeTotpMfaSignInRequest
+): Promise<FinalizeTotpMfaSignInResponse> {
+  return _performApiRequest<
+    FinalizeTotpMfaSignInRequest,
+    FinalizeTotpMfaSignInResponse
+  >(
+    auth,
+    HttpMethod.POST,
+    Endpoint.FINALIZE_MFA_SIGN_IN,
+    _addTidIfNecessary(auth,request)
+
+  );
+}
 /**
  * @internal
  */

packages/auth/src/mfa/assertions/totp.ts

@@ -26,7 +26,7 @@ import {
   StartTotpMfaEnrollmentResponse,
   TotpVerificationInfo
 } from '../../api/account_management/mfa';
-import { FinalizeMfaResponse } from '../../api/authentication/mfa';
+import { FinalizeMfaResponse, finalizeSignInPhoneMfa, finalizeSignInTotpMfa } from '../../api/authentication/mfa';
 import { MultiFactorAssertionImpl } from '../../mfa/mfa_assertion';
 import { MultiFactorSessionImpl } from '../mfa_session';
 import { AuthErrorCode } from '../../core/errors';
@@ -155,10 +155,18 @@ export class TotpMultiFactorAssertionImpl
 
   /** @internal */
   _finalizeSignIn(
-    _auth: AuthInternal,
-    _mfaPendingCredential: string
+    auth: AuthInternal,
+    mfaPendingCredential: string
   ): Promise<FinalizeMfaResponse> {
-    throw new Error('method not implemented');
+    _assert(
+      typeof this.secret !== 'undefined',
+      auth,
+      AuthErrorCode.ARGUMENT_ERROR
+    );
+    return finalizeSignInTotpMfa(auth, {
+      mfaPendingCredential,
+      totpVerificationInfo: this.secret._makeTotpVerificationInfo(this.otp)  
+    })
   }
 }