feat: Separate registration from authentication in auth domain (#8683)

* wip

* feat: Introduce register

* fix: user command

* fix: Invite HTTP tests

* fix: Auth tests

* fix: Invite modules tests

integration-tests/http/__tests__/auth/admin/auth.spec.ts

@@ -1,8 +1,8 @@
+import { medusaIntegrationTestRunner } from "medusa-test-utils"
 import {
   adminHeaders,
   createAdminUser,
 } from "../../../../helpers/create-admin-user"
-import { medusaIntegrationTestRunner } from "medusa-test-utils"
 
 jest.setTimeout(30000)
 
@@ -12,27 +12,50 @@ medusaIntegrationTestRunner({
       await createAdminUser(dbConnection, adminHeaders, getContainer())
     })
 
-    // TODO: This test won't work since we don't allow creating a user through HTTP. We need to have the invite flow plugged in here.
-    it.skip("test the entire authentication flow", async () => {
-      // BREAKING: `/admin/auth` changes to `/auth/user/emailpass`
-      const signup = await api.post("/auth/user/emailpass", {
+    it("Invite + registration + authentication flow", async () => {
+      // Create invite
+      const { token: inviteToken } = (
+        await api.post(
+          "/admin/invites",
+          { email: "newadmin@medusa.js" },
+          adminHeaders
+        )
+      ).data.invite
+
+      // Register identity
+      const signup = await api.post("/auth/user/emailpass/register", {
         email: "newadmin@medusa.js",
         password: "secret_password",
       })
 
-      //BREAKING: In V2, we respond with a JWT token instead of the user object, and a session is not created. you need to call `/auth/session` to create a session
       expect(signup.status).toEqual(200)
       expect(signup.data).toEqual({ token: expect.any(String) })
 
-      // BREAKING: IN V2 creating a user is separated from creating an auth identity
-      const createdUser = await api.post(
-        "/admin/users",
-        { email: "newadmin@medusa.js" },
-        { headers: { authorization: `Bearer ${signup.data.token}` } }
+      // Accept invite
+      const response = await api.post(
+        `/admin/invites/accept?token=${inviteToken}`,
+        {
+          email: "newadmin@medusa.js",
+          first_name: "John",
+          last_name: "Doe",
+        },
+        {
+          headers: {
+            authorization: `Bearer ${signup.data.token}`,
+          },
+        }
       )
-      expect(createdUser.status).toEqual(200)
-      expect(createdUser.data.user.email).toEqual("newadmin@medusa.js")
 
+      expect(response.status).toEqual(200)
+      expect(response.data).toEqual({
+        user: expect.objectContaining({
+          email: "newadmin@medusa.js",
+          first_name: "John",
+          last_name: "Doe",
+        }),
+      })
+
+      // Sign in
       const login = await api.post("/auth/user/emailpass", {
         email: "newadmin@medusa.js",
         password: "secret_password",
@@ -40,6 +63,7 @@ medusaIntegrationTestRunner({
       expect(login.status).toEqual(200)
       expect(login.data).toEqual({ token: expect.any(String) })
 
+      // Convert token to session
       const createSession = await api.post(
         "/auth/session",
         {},
@@ -47,7 +71,7 @@ medusaIntegrationTestRunner({
       )
       expect(createSession.status).toEqual(200)
 
-      // extract cookie
+      // Extract cookie
       const [cookie] = createSession.headers["set-cookie"][0].split(";")
       expect(cookie).toEqual(expect.stringContaining("connect.sid"))
 
@@ -55,23 +79,49 @@ medusaIntegrationTestRunner({
         headers: { Cookie: cookie },
       }
 
-      // perform cookie authenticated request
+      // Perform cookie authenticated request
       const authedRequest = await api.get(
         "/admin/products?limit=1",
         cookieHeader
       )
       expect(authedRequest.status).toEqual(200)
 
-      // sign out
+      // Sign out
       const signOutRequest = await api.delete("/auth/session", cookieHeader)
       expect(signOutRequest.status).toEqual(200)
 
-      // attempt to perform authenticated request
+      // Attempt to perform authenticated request
       const unAuthedRequest = await api
         .get("/admin/products?limit=1", cookieHeader)
         .catch((e) => e)
 
       expect(unAuthedRequest.response.status).toEqual(401)
     })
+
+    it("should respond with 401 on register, if email already exists", async () => {
+      const signup = await api
+        .post("/auth/user/emailpass/register", {
+          email: "admin@medusa.js",
+          password: "secret_password",
+        })
+        .catch((e) => e)
+
+      expect(signup.response.status).toEqual(401)
+      expect(signup.response.data.message).toEqual(
+        "Identity with email already exists"
+      )
+    })
+
+    it("should respond with 401 on sign in, if email does not exist", async () => {
+      const signup = await api
+        .post("/auth/user/emailpass", {
+          email: "john@doe.com",
+          password: "secret_password",
+        })
+        .catch((e) => e)
+
+      expect(signup.response.status).toEqual(401)
+      expect(signup.response.data.message).toEqual("Invalid email or password")
+    })
   },
 })

integration-tests/http/__tests__/invite/admin/invite.spec.ts

@@ -64,7 +64,7 @@ medusaIntegrationTestRunner({
           })
         )
 
-        const signup = await api.post("/auth/user/emailpass", {
+        const signup = await api.post("/auth/user/emailpass/register", {
           email: "test@medusa-commerce.com",
           password: "secret_password",
         })
@@ -92,7 +92,7 @@ medusaIntegrationTestRunner({
 
       it("should fail to accept an invite given an invalid token", async () => {
         expect.assertions(2)
-        const signup = await api.post("/auth/user/emailpass", {
+        const signup = await api.post("/auth/user/emailpass/register", {
           email: "test@medusa-commerce.com",
           password: "secret_password",
         })
@@ -119,7 +119,7 @@ medusaIntegrationTestRunner({
       })
 
       it("should fail to accept an already accepted invite ", async () => {
-        const signup = await api.post("/auth/user/emailpass", {
+        const signup = await api.post("/auth/user/emailpass/register", {
           email: "test@medusa-commerce.com",
           password: "secret_password",
         })
@@ -135,7 +135,7 @@ medusaIntegrationTestRunner({
           }
         )
 
-        const signupAgain = await api.post("/auth/user/emailpass", {
+        const signupAgain = await api.post("/auth/user/emailpass/register", {
           email: "another-test@medusa-commerce.com",
           password: "secret_password",
         })

integration-tests/modules/__tests__/invites/accept-invite.spec.ts

@@ -27,7 +27,7 @@ medusaIntegrationTestRunner({
       })
 
       it("should fail to accept an invite with an invalid invite token", async () => {
-        const authResponse = await api.post(`/auth/user/emailpass`, {
+        const authResponse = await api.post(`/auth/user/emailpass/register`, {
           email: "potential_member@test.com",
           password: "supersecret",
         })
@@ -58,7 +58,7 @@ medusaIntegrationTestRunner({
           email: "potential_member@test.com",
         })
 
-        const authResponse = await api.post(`/auth/user/emailpass`, {
+        const authResponse = await api.post(`/auth/user/emailpass/register`, {
           email: "potential_member@test.com",
           password: "supersecret",
         })
@@ -92,7 +92,7 @@ medusaIntegrationTestRunner({
           email: "potential_member@test.com",
         })
 
-        const authResponse = await api.post(`/auth/user/emailpass`, {
+        const authResponse = await api.post(`/auth/user/emailpass/register`, {
           email: "some-email@test.com",
           password: "supersecret",
         })

packages/admin-next/dashboard/src/hooks/api/auth.tsx

@@ -3,7 +3,7 @@ import { UseMutationOptions, useMutation } from "@tanstack/react-query"
 import { sdk } from "../../lib/client"
 import { EmailPassReq } from "../../types/api-payloads"
 
-export const useEmailPassLogin = (
+export const useSignInWithEmailPassword = (
   options?: UseMutationOptions<void, Error, EmailPassReq>
 ) => {
   return useMutation({
@@ -15,21 +15,21 @@ export const useEmailPassLogin = (
   })
 }
 
+export const useSignUpWithEmailPass = (
+  options?: UseMutationOptions<string, Error, EmailPassReq>
+) => {
+  return useMutation({
+    mutationFn: (payload) => sdk.auth.register("user", "emailpass", payload),
+    onSuccess: async (data, variables, context) => {
+      options?.onSuccess?.(data, variables, context)
+    },
+    ...options,
+  })
+}
+
 export const useLogout = (options?: UseMutationOptions<void, Error>) => {
   return useMutation({
     mutationFn: () => sdk.auth.logout(),
     ...options,
   })
 }
-
-export const useCreateAuthUser = (
-  options?: UseMutationOptions<{ token: string }, Error, EmailPassReq>
-) => {
-  return useMutation({
-    mutationFn: (payload) => sdk.auth.create("user", "emailpass", payload),
-    onSuccess: async (data, variables, context) => {
-      options?.onSuccess?.(data, variables, context)
-    },
-    ...options,
-  })
-}

packages/admin-next/dashboard/src/routes/invite/invite.tsx

@@ -10,7 +10,7 @@ import { Link, useSearchParams } from "react-router-dom"
 import * as z from "zod"
 import { Form } from "../../components/common/form"
 import { LogoBox } from "../../components/common/logo-box"
-import { useCreateAuthUser } from "../../hooks/api/auth"
+import { useSignUpWithEmailPass } from "../../hooks/api/auth"
 import { useAcceptInvite } from "../../hooks/api/invites"
 import { isFetchError } from "../../lib/is-fetch-error"
 
@@ -204,15 +204,15 @@ const CreateView = ({
     },
   })
 
-  const { mutateAsync: createAuthUser, isPending: isCreatingAuthUser } =
-    useCreateAuthUser()
+  const { mutateAsync: signUpEmailPass, isPending: isCreatingAuthUser } =
+    useSignUpWithEmailPass()
 
   const { mutateAsync: acceptInvite, isPending: isAcceptingInvite } =
     useAcceptInvite(token)
 
   const handleSubmit = form.handleSubmit(async (data) => {
     try {
-      const { token: authToken } = await createAuthUser({
+      const authToken = await signUpEmailPass({
         email: data.email,
         password: data.password,
       })

packages/admin-next/dashboard/src/routes/login/login.tsx

@@ -8,7 +8,7 @@ import * as z from "zod"
 import { Divider } from "../../components/common/divider"
 import { Form } from "../../components/common/form"
 import { LogoBox } from "../../components/common/logo-box"
-import { useEmailPassLogin } from "../../hooks/api/auth"
+import { useSignInWithEmailPassword } from "../../hooks/api/auth"
 import { isAxiosError } from "../../lib/is-axios-error"
 
 import after from "virtual:medusa/widgets/login/after"
@@ -34,8 +34,7 @@ export const Login = () => {
     },
   })
 
-  //  TODO: Update when more than emailpass is supported
-  const { mutateAsync, isPending } = useEmailPassLogin()
+  const { mutateAsync, isPending } = useSignInWithEmailPassword()
 
   const handleSubmit = form.handleSubmit(async ({ email, password }) => {
     try {

packages/core/js-sdk/src/auth/index.ts

@@ -10,6 +10,24 @@ export class Auth {
     this.config = config
   }
 
+  register = async (
+    actor: "customer" | "user",
+    method: "emailpass",
+    payload: { email: string; password: string }
+  ) => {
+    const { token } = await this.client.fetch<{ token: string }>(
+      `/auth/${actor}/${method}/register`,
+      {
+        method: "POST",
+        body: payload,
+      }
+    )
+
+    this.client.setToken(token)
+
+    return token
+  }
+
   login = async (
     actor: "customer" | "user",
     method: "emailpass",

packages/core/types/src/auth/provider.ts

@@ -26,6 +26,10 @@ export interface IAuthProvider {
     data: AuthenticationInput,
     authIdentityProviderService: AuthIdentityProviderService
   ): Promise<AuthenticationResponse>
+  register(
+    data: AuthenticationInput,
+    authIdentityProviderService: AuthIdentityProviderService
+  ): Promise<AuthenticationResponse>
   validateCallback(
     data: AuthenticationInput,
     authIdentityProviderService: AuthIdentityProviderService

packages/core/types/src/auth/service.ts

@@ -46,7 +46,12 @@ export interface IAuthModuleService extends IModuleService {
    */
   authenticate(
     provider: string,
-    providerData: AuthenticationInput
+    providerData: AuthenticationInput,
+  ): Promise<AuthenticationResponse>
+
+  register(
+    provider: string,
+    providerData: AuthenticationInput,
   ): Promise<AuthenticationResponse>
 
   /**

packages/core/utils/src/auth/abstract-auth-provider.ts

@@ -222,6 +222,15 @@ export abstract class AbstractAuthModuleProvider implements IAuthProvider {
     authIdentityProviderService: AuthIdentityProviderService
   ): Promise<AuthenticationResponse>
 
+  register(
+    data: AuthenticationInput,
+    authIdentityProviderService: AuthIdentityProviderService
+  ): Promise<AuthenticationResponse> {
+    throw new Error(
+      `Method 'register' not implemented for provider ${this.provider}`
+    )
+  }
+
   /**
    * This method validates the callback of an authentication request.
    *

packages/framework/framework/src/http/middlewares/authenticate-middleware.ts

@@ -5,13 +5,13 @@ import {
 } from "@medusajs/utils"
 import { NextFunction, RequestHandler } from "express"
 import { JwtPayload, verify } from "jsonwebtoken"
+import { ConfigModule } from "../../config"
 import {
   AuthContext,
   AuthenticatedMedusaRequest,
   MedusaRequest,
   MedusaResponse,
 } from "../types"
-import { ConfigModule } from "../../config"
 
 const SESSION_AUTH = "session"
 const BEARER_AUTH = "bearer"

packages/medusa/src/api/auth/[actor_type]/[auth_provider]/register/route.ts

@@ -0,0 +1,70 @@
+import {
+  AuthenticationInput,
+  ConfigModule,
+  IAuthModuleService,
+} from "@medusajs/types"
+import {
+  ContainerRegistrationKeys,
+  MedusaError,
+  ModuleRegistrationName,
+} from "@medusajs/utils"
+import { MedusaRequest, MedusaResponse } from "../../../../../types/routing"
+import { generateJwtTokenForAuthIdentity } from "../../../utils/generate-jwt-token"
+
+export const POST = async (req: MedusaRequest, res: MedusaResponse) => {
+  const { actor_type, auth_provider } = req.params
+  const config: ConfigModule = req.scope.resolve(
+    ContainerRegistrationKeys.CONFIG_MODULE
+  )
+
+  const authMethodsPerActor =
+    config.projectConfig?.http?.authMethodsPerActor ?? {}
+  // Not having the config defined would allow for all auth providers for the particular actor.
+  if (authMethodsPerActor[actor_type]) {
+    if (!authMethodsPerActor[actor_type].includes(auth_provider)) {
+      throw new MedusaError(
+        MedusaError.Types.NOT_ALLOWED,
+        `The actor type ${actor_type} is not allowed to use the auth provider ${auth_provider}`
+      )
+    }
+  }
+
+  const service: IAuthModuleService = req.scope.resolve(
+    ModuleRegistrationName.AUTH
+  )
+
+  const authData = {
+    url: req.url,
+    headers: req.headers,
+    query: req.query,
+    body: req.body,
+    protocol: req.protocol,
+  } as AuthenticationInput
+
+  const { success, error, authIdentity } = await service.register(
+    auth_provider,
+    authData
+  )
+
+  if (success) {
+    const { http } = config.projectConfig
+
+    const token = generateJwtTokenForAuthIdentity(
+      {
+        authIdentity,
+        actorType: actor_type,
+      },
+      {
+        secret: http.jwtSecret,
+        expiresIn: http.jwtExpiresIn,
+      }
+    )
+
+    return res.status(200).json({ token })
+  }
+
+  throw new MedusaError(
+    MedusaError.Types.UNAUTHORIZED,
+    error || "Authentication failed"
+  )
+}

packages/medusa/src/api/auth/[actor_type]/[auth_provider]/route.ts

@@ -7,9 +7,9 @@ import {
   ContainerRegistrationKeys,
   MedusaError,
   ModuleRegistrationName,
-  generateJwtToken,
 } from "@medusajs/utils"
 import { MedusaRequest, MedusaResponse } from "../../../../types/routing"
+import { generateJwtTokenForAuthIdentity } from "../../utils/generate-jwt-token"
 
 export const GET = async (req: MedusaRequest, res: MedusaResponse) => {
   const { actor_type, auth_provider } = req.params
@@ -52,30 +52,16 @@ export const GET = async (req: MedusaRequest, res: MedusaResponse) => {
   }
 
   if (success) {
-    const { http } = req.scope.resolve(
-      ContainerRegistrationKeys.CONFIG_MODULE
-    ).projectConfig
+    const { http } = config.projectConfig
 
-    const entityIdKey = `${actor_type}_id`
-    const entityId = authIdentity?.app_metadata?.[entityIdKey] as
-      | string
-      | undefined
-    const { jwtSecret, jwtExpiresIn } = http
-
-    const token = generateJwtToken(
+    const token = generateJwtTokenForAuthIdentity(
       {
-        actor_id: entityId ?? "",
-        actor_type,
-        auth_identity_id: authIdentity?.id ?? "",
-        app_metadata: {
-          [entityIdKey]: entityId,
-        },
+        authIdentity,
+        actorType: actor_type,
       },
       {
-        // @ts-expect-error
-        secret: jwtSecret,
-        // @ts-expect-error
-        expiresIn: jwtExpiresIn,
+        secret: http.jwtSecret,
+        expiresIn: http.jwtExpiresIn,
       }
     )
 

packages/medusa/src/api/auth/middlewares.ts

@@ -19,6 +19,16 @@ export const authRoutesMiddlewares: MiddlewareRoute[] = [
   },
   {
     method: ["POST"],
+    matcher: "/auth/:actor_type/:auth_provider/register",
+    middlewares: [],
+  },
+  {
+    method: ["POST"],
+    matcher: "/auth/:actor_type/:auth_provider",
+    middlewares: [],
+  },
+  {
+    method: ["GET"],
     matcher: "/auth/:actor_type/:auth_provider",
     middlewares: [],
   },

packages/medusa/src/api/auth/utils/generate-jwt-token.ts

@@ -0,0 +1,26 @@
+import { generateJwtToken } from "@medusajs/utils"
+
+export function generateJwtTokenForAuthIdentity(
+  { authIdentity, actorType },
+  { secret, expiresIn }
+) {
+  const entityIdKey = `${actorType}_id`
+  const entityId = authIdentity?.app_metadata?.[entityIdKey] as
+    | string
+    | undefined
+
+  return generateJwtToken(
+    {
+      actor_id: entityId ?? "",
+      actor_type: actorType,
+      auth_identity_id: authIdentity?.id ?? "",
+      app_metadata: {
+        [entityIdKey]: entityId,
+      },
+    },
+    {
+      secret,
+      expiresIn,
+    }
+  )
+}

packages/medusa/src/commands/user.ts

@@ -41,7 +41,7 @@ export default async function ({
     } else {
       const user = await userService.createUsers({ email })
 
-      const { authIdentity, error } = await authService.authenticate(provider, {
+      const { authIdentity, error } = await authService.register(provider, {
         body: {
           email,
           password,

packages/modules/auth/src/services/auth-module.ts

@@ -121,6 +121,20 @@ export default class AuthModuleService
     return Array.isArray(data) ? serializedUsers : serializedUsers[0]
   }
 
+  async register(
+    provider: string,
+    authenticationData: AuthenticationInput
+  ): Promise<AuthenticationResponse> {
+    try {
+      return await this.authProviderService_.register(
+        provider,
+        authenticationData,
+        this.getAuthIdentityProviderService(provider)
+      )
+    } catch (error) {
+      return { success: false, error: error.message }
+    }
+  }
   // @ts-expect-error
   createProviderIdentities(
     data: AuthTypes.CreateProviderIdentityDTO[],

packages/modules/auth/src/services/auth-provider.ts

@@ -1,7 +1,7 @@
 import {
+  AuthIdentityProviderService,
   AuthTypes,
   AuthenticationInput,
-  AuthIdentityProviderService,
   AuthenticationResponse,
 } from "@medusajs/types"
 import { MedusaError } from "@medusajs/utils"
@@ -42,6 +42,15 @@ export default class AuthProviderService {
     return await providerHandler.authenticate(auth, authIdentityProviderService)
   }
 
+  async register(
+    provider: string,
+    auth: AuthenticationInput,
+    authIdentityProviderService: AuthIdentityProviderService
+  ): Promise<AuthenticationResponse> {
+    const providerHandler = this.retrieveProviderRegistration(provider)
+    return await providerHandler.register(auth, authIdentityProviderService)
+  }
+
   async validateCallback(
     provider: string,
     auth: AuthenticationInput,

packages/modules/providers/auth-emailpass/integration-tests/__tests__/services.spec.ts

@@ -136,7 +136,7 @@ describe("Email password auth provider", () => {
       }),
     }
 
-    const resp = await emailpassService.authenticate(
+    const resp = await emailpassService.register(
       { body: { email: "test@admin.com", password: "test" } },
       authServiceSpies
     )
@@ -151,4 +151,52 @@ describe("Email password auth provider", () => {
       })
     )
   })
+
+  it("throw if auth identity with email already exists", async () => {
+    const authServiceSpies = {
+      retrieve: jest.fn().mockImplementation(() => {
+        return { success: true }
+      }),
+      create: jest.fn().mockImplementation(() => {
+        return {
+          provider_identities: [
+            {
+              entity_id: "test@admin.com",
+              provider: "emailpass",
+              provider_metadata: {
+                password: "somehash",
+              },
+            },
+          ],
+        }
+      }),
+    }
+
+    const resp = await emailpassService.register(
+      { body: { email: "test@admin.com", password: "test" } },
+      authServiceSpies
+    )
+
+    expect(authServiceSpies.retrieve).toHaveBeenCalled()
+
+    expect(resp.error).toEqual("Identity with email already exists")
+  })
+
+  it("throws if auth identity with email doesn't exist", async () => {
+    const authServiceSpies = {
+      retrieve: jest.fn().mockImplementation(() => {
+        throw new MedusaError(MedusaError.Types.NOT_FOUND, "Not found")
+      }),
+      create: jest.fn().mockImplementation(() => {}),
+    }
+
+    const resp = await emailpassService.authenticate(
+      { body: { email: "test@admin.com", password: "test" } },
+      authServiceSpies
+    )
+
+    expect(authServiceSpies.retrieve).toHaveBeenCalled()
+
+    expect(resp.error).toEqual("Invalid email or password")
+  })
 })

packages/modules/providers/auth-emailpass/src/services/emailpass.ts

@@ -1,15 +1,15 @@
 import {
-  Logger,
-  EmailPassAuthProviderOptions,
-  AuthenticationResponse,
   AuthenticationInput,
-  AuthIdentityProviderService,
+  AuthenticationResponse,
   AuthIdentityDTO,
+  AuthIdentityProviderService,
+  EmailPassAuthProviderOptions,
+  Logger,
 } from "@medusajs/types"
 import {
   AbstractAuthModuleProvider,
-  MedusaError,
   isString,
+  MedusaError,
 } from "@medusajs/utils"
 import Scrypt from "scrypt-kdf"
 
@@ -35,6 +35,26 @@ export class EmailPassAuthService extends AbstractAuthModuleProvider {
     this.logger_ = logger
   }
 
+  protected async createAuthIdentity({ email, password, authIdentityService }) {
+    const hashConfig = this.config_.hashConfig ?? { logN: 15, r: 8, p: 1 }
+    const passwordHash = await Scrypt.kdf(password, hashConfig)
+
+    const createdAuthIdentity = await authIdentityService.create({
+      entity_id: email,
+      provider_metadata: {
+        password: passwordHash.toString("base64"),
+      },
+    })
+
+    const copy = JSON.parse(JSON.stringify(createdAuthIdentity))
+    const providerIdentity = copy.provider_identities?.find(
+      (pi) => pi.provider === this.provider
+    )!
+    delete providerIdentity.provider_metadata?.password
+
+    return copy
+  }
+
   async authenticate(
     userData: AuthenticationInput,
     authIdentityService: AuthIdentityProviderService
@@ -54,6 +74,7 @@ export class EmailPassAuthService extends AbstractAuthModuleProvider {
         error: "Email should be a string",
       }
     }
+
     let authIdentity: AuthIdentityDTO | undefined
 
     try {
@@ -62,25 +83,9 @@ export class EmailPassAuthService extends AbstractAuthModuleProvider {
       })
     } catch (error) {
       if (error.type === MedusaError.Types.NOT_FOUND) {
-        const config = this.config_.hashConfig ?? { logN: 15, r: 8, p: 1 }
-        const passwordHash = await Scrypt.kdf(password, config)
-
-        const createdAuthIdentity = await authIdentityService.create({
-          entity_id: email,
-          provider_metadata: {
-            password: passwordHash.toString("base64"),
-          },
-        })
-
-        const copy = JSON.parse(JSON.stringify(createdAuthIdentity))
-        const providerIdentity = copy.provider_identities?.find(
-          (pi) => pi.provider === this.provider
-        )!
-        delete providerIdentity.provider_metadata?.password
-
         return {
-          success: true,
-          authIdentity: copy,
+          success: false,
+          error: "Invalid email or password",
         }
       }
 
@@ -115,4 +120,51 @@ export class EmailPassAuthService extends AbstractAuthModuleProvider {
       error: "Invalid email or password",
     }
   }
+
+  async register(
+    userData: AuthenticationInput,
+    authIdentityService: AuthIdentityProviderService
+  ): Promise<AuthenticationResponse> {
+    const { email, password } = userData.body ?? {}
+
+    if (!password || !isString(password)) {
+      return {
+        success: false,
+        error: "Password should be a string",
+      }
+    }
+
+    if (!email || !isString(email)) {
+      return {
+        success: false,
+        error: "Email should be a string",
+      }
+    }
+
+    try {
+      await authIdentityService.retrieve({
+        entity_id: email,
+      })
+
+      return {
+        success: false,
+        error: "Identity with email already exists",
+      }
+    } catch (error) {
+      if (error.type === MedusaError.Types.NOT_FOUND) {
+        const createdAuthIdentity = await this.createAuthIdentity({
+          email,
+          password,
+          authIdentityService,
+        })
+
+        return {
+          success: true,
+          authIdentity: createdAuthIdentity,
+        }
+      }
+
+      return { success: false, error: error.message }
+    }
+  }
 }

packages/modules/providers/auth-google/src/services/google.ts

@@ -1,9 +1,9 @@
 import {
-  Logger,
-  GoogleAuthProviderOptions,
-  AuthenticationResponse,
   AuthenticationInput,
+  AuthenticationResponse,
   AuthIdentityProviderService,
+  GoogleAuthProviderOptions,
+  Logger,
 } from "@medusajs/types"
 import { AbstractAuthModuleProvider, MedusaError } from "@medusajs/utils"
 import jwt, { JwtPayload } from "jsonwebtoken"
@@ -29,6 +29,13 @@ export class GoogleAuthService extends AbstractAuthModuleProvider {
     this.logger_ = logger
   }
 
+  async register(_): Promise<AuthenticationResponse> {
+    throw new MedusaError(
+      MedusaError.Types.NOT_ALLOWED,
+      "Google does not support registration. Use method `authenticate` instead."
+    )
+  }
+
   async authenticate(
     req: AuthenticationInput
   ): Promise<AuthenticationResponse> {