From e60b4bafe1e7ecaed1ae93b9d2c863b51074115f Mon Sep 17 00:00:00 2001
From: Stevche Radevski <sradevski@live.com>
Date: Tue, 28 May 2024 14:25:40 +0200
Subject: [PATCH] feat: Add google authentication package, cleanup old code
 (#7496)

---
 .../core/types/src/auth/providers/google.ts   |   6 +
 .../core/types/src/auth/providers/index.ts    |   1 +
 packages/modules/auth/jest.config.js          |   1 -
 packages/modules/auth/src/providers/google.ts | 224 ------------------
 packages/modules/auth/src/providers/index.ts  |   1 -
 packages/modules/auth/tsconfig.json           |   3 +-
 .../modules/providers/auth-google/.gitignore  |   0
 .../modules/providers/auth-google/README.md   |  11 +
 .../__tests__/services.spec.ts                | 216 +++++++++++++++++
 .../providers/auth-google/jest.config.js      |   7 +
 .../providers/auth-google/package.json        |  42 ++++
 .../providers/auth-google/src/index.ts        |  10 +
 .../auth-google/src/services/google.ts        | 185 +++++++++++++++
 .../providers/auth-google/tsconfig.json       |  30 +++
 yarn.lock                                     |  22 ++
 15 files changed, 531 insertions(+), 228 deletions(-)
 create mode 100644 packages/core/types/src/auth/providers/google.ts
 delete mode 100644 packages/modules/auth/src/providers/google.ts
 delete mode 100644 packages/modules/auth/src/providers/index.ts
 create mode 100644 packages/modules/providers/auth-google/.gitignore
 create mode 100644 packages/modules/providers/auth-google/README.md
 create mode 100644 packages/modules/providers/auth-google/integration-tests/__tests__/services.spec.ts
 create mode 100644 packages/modules/providers/auth-google/jest.config.js
 create mode 100644 packages/modules/providers/auth-google/package.json
 create mode 100644 packages/modules/providers/auth-google/src/index.ts
 create mode 100644 packages/modules/providers/auth-google/src/services/google.ts
 create mode 100644 packages/modules/providers/auth-google/tsconfig.json

diff --git a/packages/core/types/src/auth/providers/google.ts b/packages/core/types/src/auth/providers/google.ts
new file mode 100644
index 0000000000..8d06a460b8
--- /dev/null
+++ b/packages/core/types/src/auth/providers/google.ts
@@ -0,0 +1,6 @@
+export interface GoogleAuthProviderOptions {
+  clientID: string
+  clientSecret: string
+  callbackURL: string
+  successRedirectUrl?: string
+}
diff --git a/packages/core/types/src/auth/providers/index.ts b/packages/core/types/src/auth/providers/index.ts
index 5f6f11eafa..9925b4a041 100644
--- a/packages/core/types/src/auth/providers/index.ts
+++ b/packages/core/types/src/auth/providers/index.ts
@@ -1 +1,2 @@
 export * from "./emailpass"
+export * from "./google"
diff --git a/packages/modules/auth/jest.config.js b/packages/modules/auth/jest.config.js
index 21d1539c24..0c652264ea 100644
--- a/packages/modules/auth/jest.config.js
+++ b/packages/modules/auth/jest.config.js
@@ -4,7 +4,6 @@ module.exports = {
     "^@services": "<rootDir>/src/services",
     "^@repositories": "<rootDir>/src/repositories",
     "^@types": "<rootDir>/src/types",
-    "^@providers": "<rootDir>/src/providers",
   },
   transform: {
     "^.+\\.[jt]s?$": [
diff --git a/packages/modules/auth/src/providers/google.ts b/packages/modules/auth/src/providers/google.ts
deleted file mode 100644
index ad1f62a3d0..0000000000
--- a/packages/modules/auth/src/providers/google.ts
+++ /dev/null
@@ -1,224 +0,0 @@
-import { AuthenticationInput, AuthenticationResponse } from "@medusajs/types"
-import { AbstractAuthModuleProvider, MedusaError } from "@medusajs/utils"
-import jwt, { JwtPayload } from "jsonwebtoken"
-
-import { AuthorizationCode } from "simple-oauth2"
-import url from "url"
-
-type InjectedDependencies = {
-  authIdentityService: any
-}
-
-type ProviderConfig = {
-  clientID: string
-  clientSecret: string
-  callbackURL: string
-  successRedirectUrl?: string
-}
-
-class GoogleProvider extends AbstractAuthModuleProvider {
-  protected readonly authIdentityService_: any
-
-  constructor({ authIdentityService }: InjectedDependencies, options: any) {
-    super(arguments[0], {
-      provider: "google",
-      displayName: "Google Authentication",
-    })
-
-    this.authIdentityService_ = authIdentityService
-  }
-
-  async authenticate(
-    req: AuthenticationInput
-  ): Promise<AuthenticationResponse> {
-    if (req.query?.error) {
-      return {
-        success: false,
-        error: `${req.query.error_description}, read more at: ${req.query.error_uri}`,
-      }
-    }
-
-    let config: ProviderConfig
-
-    try {
-      config = await this.getProviderConfig(req)
-    } catch (error) {
-      return { success: false, error: error.message }
-    }
-
-    return this.getRedirect(config)
-  }
-
-  async validateCallback(
-    req: AuthenticationInput
-  ): Promise<AuthenticationResponse> {
-    if (req.query && req.query.error) {
-      return {
-        success: false,
-        error: `${req.query.error_description}, read more at: ${req.query.error_uri}`,
-      }
-    }
-
-    let config: ProviderConfig
-
-    try {
-      config = await this.getProviderConfig(req)
-    } catch (error) {
-      return { success: false, error: error.message }
-    }
-
-    const code = req.query?.code ?? req.body?.code
-    if (!code) {
-      return { success: false, error: "No code provided" }
-    }
-
-    return await this.validateCallbackToken(code, config)
-  }
-
-  // abstractable
-  async verify_(refreshToken: string) {
-    const jwtData = jwt.decode(refreshToken, {
-      complete: true,
-    }) as JwtPayload
-    const entity_id = jwtData.payload.email
-
-    let authIdentity
-
-    try {
-      authIdentity =
-        await this.authIdentityService_.retrieveByProviderAndEntityId(
-          entity_id,
-          this.provider
-        )
-    } catch (error) {
-      if (error.type === MedusaError.Types.NOT_FOUND) {
-        const [createdAuthIdentity] = await this.authIdentityService_.create([
-          {
-            entity_id,
-            provider: this.provider,
-            user_metadata: jwtData!.payload,
-          },
-        ])
-        authIdentity = createdAuthIdentity
-      } else {
-        return { success: false, error: error.message }
-      }
-    }
-
-    return {
-      success: true,
-      authIdentity,
-    }
-  }
-
-  // abstractable
-  private async validateCallbackToken(
-    code: string,
-    { clientID, callbackURL, clientSecret }: ProviderConfig
-  ) {
-    const client = this.getAuthorizationCodeHandler({ clientID, clientSecret })
-
-    const tokenParams = {
-      code,
-      redirect_uri: callbackURL,
-    }
-
-    try {
-      const accessToken = await client.getToken(tokenParams)
-
-      const { authIdentity, success } = await this.verify_(
-        accessToken.token.id_token
-      )
-
-      const { successRedirectUrl } = this.getConfig()
-
-      return {
-        success,
-        authIdentity,
-        successRedirectUrl,
-      }
-    } catch (error) {
-      return { success: false, error: error.message }
-    }
-  }
-
-  private getConfig(): ProviderConfig {
-    // TODO: Fetch this from provider config
-    // const config: Partial<ProviderConfig> = { ...this.scopeConfig_ }
-    const config = {} as any
-
-    if (!config.clientID) {
-      throw new Error("Google clientID is required")
-    }
-
-    if (!config.clientSecret) {
-      throw new Error("Google clientSecret is required")
-    }
-
-    if (!config.callbackURL) {
-      throw new Error("Google callbackUrl is required")
-    }
-
-    return config as ProviderConfig
-  }
-
-  private originalURL(req: AuthenticationInput) {
-    const host = req.headers?.host
-    const protocol = req.protocol
-    const path = req.url || ""
-
-    return protocol + "://" + host + path
-  }
-
-  private async getProviderConfig(
-    req: AuthenticationInput
-  ): Promise<ProviderConfig> {
-    const config = this.getConfig()
-
-    const callbackURL = config.callbackURL
-
-    const parsedCallbackUrl = !url.parse(callbackURL).protocol
-      ? url.resolve(this.originalURL(req), callbackURL)
-      : callbackURL
-
-    return { ...config, callbackURL: parsedCallbackUrl }
-  }
-
-  // Abstractable
-  private getRedirect({ clientID, callbackURL, clientSecret }: ProviderConfig) {
-    const client = this.getAuthorizationCodeHandler({ clientID, clientSecret })
-
-    const location = client.authorizeURL({
-      redirect_uri: callbackURL,
-      scope: "email profile",
-    })
-
-    return { success: true, location }
-  }
-
-  private getAuthorizationCodeHandler({
-    clientID,
-    clientSecret,
-  }: {
-    clientID: string
-    clientSecret: string
-  }) {
-    const config = {
-      client: {
-        id: clientID,
-        secret: clientSecret,
-      },
-      auth: {
-        // TODO: abstract to not be google specific
-        authorizeHost: "https://accounts.google.com",
-        authorizePath: "/o/oauth2/v2/auth",
-        tokenHost: "https://www.googleapis.com",
-        tokenPath: "/oauth2/v4/token",
-      },
-    }
-
-    return new AuthorizationCode(config)
-  }
-}
-
-export default GoogleProvider
diff --git a/packages/modules/auth/src/providers/index.ts b/packages/modules/auth/src/providers/index.ts
deleted file mode 100644
index 14dabd356d..0000000000
--- a/packages/modules/auth/src/providers/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-export { default as GoogleProvider } from "./google"
diff --git a/packages/modules/auth/tsconfig.json b/packages/modules/auth/tsconfig.json
index 8b8d51ce5c..87b2674a45 100644
--- a/packages/modules/auth/tsconfig.json
+++ b/packages/modules/auth/tsconfig.json
@@ -24,8 +24,7 @@
       "@models": ["./src/models"],
       "@services": ["./src/services"],
       "@repositories": ["./src/repositories"],
-      "@types": ["./src/types"],
-      "@providers": ["./src/providers"]
+      "@types": ["./src/types"]
     }
   },
   "include": ["src"],
diff --git a/packages/modules/providers/auth-google/.gitignore b/packages/modules/providers/auth-google/.gitignore
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/packages/modules/providers/auth-google/README.md b/packages/modules/providers/auth-google/README.md
new file mode 100644
index 0000000000..df3785bb37
--- /dev/null
+++ b/packages/modules/providers/auth-google/README.md
@@ -0,0 +1,11 @@
+## Testing
+
+In order to manually test the flow, you can do the following:
+
+1. Register an app in `https://console.cloud.google.com/apis/credentials/consent`
+2. Generate clientID and clientSecret credentials in the console
+3. Replace the values in the test with your credentials
+4. Remove the `server.listen()` call
+5. Run the tests, get the `location` value from the `authenticate` test, open the browser
+6. Once redirected, copy the `code` param from the URL, and add it in one of the `callback` success tests
+7. Once you run the tests, you should get back an access token, id token, and so on.
diff --git a/packages/modules/providers/auth-google/integration-tests/__tests__/services.spec.ts b/packages/modules/providers/auth-google/integration-tests/__tests__/services.spec.ts
new file mode 100644
index 0000000000..c33b0f7e4c
--- /dev/null
+++ b/packages/modules/providers/auth-google/integration-tests/__tests__/services.spec.ts
@@ -0,0 +1,216 @@
+import { MedusaError } from "@medusajs/utils"
+import { GoogleAuthService } from "../../src/services/google"
+jest.setTimeout(100000)
+import { http, HttpResponse } from "msw"
+import { setupServer } from "msw/node"
+import jwt from "jsonwebtoken"
+
+const sampleIdPayload = {
+  iss: "https://accounts.google.com",
+  azp: "199301612397-l1lrg08vd6dvu98r43l7ul0ri2rd2b6r.apps.googleusercontent.com",
+  aud: "199301612397-l1lrg08vd6dvu98r43l7ul0ri2rd2b6r.apps.googleusercontent.com",
+  sub: "113664482950786663866",
+  hd: "medusajs.com",
+  email: "test@medusajs.com",
+  email_verified: true,
+  at_hash: "7DKi89ceSj-Bii1m_V1Pew",
+  name: "Test Admin",
+  picture:
+    "https://lh3.googleusercontent.com/a/ACg8ocJu6nzIGJRzHnl6peAh3fKOzOkrrRCWyMOMuIfCwePDG-ykulA=s96-c",
+  given_name: "Test",
+  family_name: "Admin",
+  iat: 1716891837,
+  exp: 1716895437,
+}
+
+const encodedIdToken = jwt.sign(sampleIdPayload, "test")
+
+const baseUrl = "https://someurl.com"
+
+// This is just a network-layer mocking, it doesn't start an actual server
+const server = setupServer(
+  http.post(
+    "https://oauth2.googleapis.com/token",
+    async ({ request, params, cookies }) => {
+      const url = request.url
+      if (
+        url ===
+        "https://oauth2.googleapis.com/token?client_id=test&client_secret=test&code=invalid-code&redirect_uri=https%3A%2F%2Fsomeurl.com%2Fauth%2Fgoogle%2Fcallback&grant_type=authorization_code"
+      ) {
+        return new HttpResponse(null, {
+          status: 401,
+          statusText: "Unauthorized",
+        })
+      }
+
+      if (
+        url ===
+        "https://oauth2.googleapis.com/token?client_id=test&client_secret=test&code=valid-code&redirect_uri=https%3A%2F%2Fsomeurl.com%2Fauth%2Fgoogle%2Fcallback&grant_type=authorization_code"
+      ) {
+        return new HttpResponse(
+          JSON.stringify({
+            access_token: "test",
+            expires_in: 3600,
+            token_type: "Bearer",
+            refresh_token: "test",
+            id_token: encodedIdToken,
+          })
+        )
+      }
+    }
+  ),
+
+  http.all("*", ({ request, params, cookies }) => {
+    return new HttpResponse(null, {
+      status: 404,
+      statusText: "Not Found",
+    })
+  })
+)
+
+describe("Google auth provider", () => {
+  let googleService: GoogleAuthService
+  beforeAll(() => {
+    googleService = new GoogleAuthService(
+      {
+        logger: console as any,
+      },
+      {
+        clientID: "test",
+        clientSecret: "test",
+        successRedirectUrl: baseUrl,
+        callbackURL: `${baseUrl}/auth/google/callback`,
+      }
+    )
+
+    server.listen()
+  })
+
+  afterEach(() => {
+    server.resetHandlers()
+    jest.restoreAllMocks()
+  })
+
+  afterAll(() => server.close())
+
+  it("throw an error if required options are not passed", async () => {
+    let msg = ""
+    try {
+      new GoogleAuthService(
+        {
+          logger: console as any,
+        },
+        {
+          clientID: "test",
+          clientSecret: "test",
+        } as any
+      )
+    } catch (e) {
+      msg = e.message
+    }
+
+    expect(msg).toEqual("Google callbackUrl is required")
+  })
+
+  it("returns a redirect URL on authenticate", async () => {
+    const res = await googleService.authenticate({})
+    expect(res).toEqual({
+      success: true,
+      location:
+        "https://accounts.google.com/o/oauth2/v2/auth?redirect_uri=https%3A%2F%2Fsomeurl.com%2Fauth%2Fgoogle%2Fcallback&client_id=test&response_type=code&scope=email+profile+openid",
+    })
+  })
+
+  it("validate callback should return an error on empty code", async () => {
+    const res = await googleService.validateCallback(
+      {
+        query: {},
+      },
+      {} as any
+    )
+    expect(res).toEqual({
+      success: false,
+      error: "No code provided",
+    })
+  })
+
+  it("validate callback should return on a missing access token for code", async () => {
+    const res = await googleService.validateCallback(
+      {
+        query: {
+          code: "invalid-code",
+        },
+      },
+      {} as any
+    )
+
+    expect(res).toEqual({
+      success: false,
+      error: "Could not exchange token, 401, Unauthorized",
+    })
+  })
+
+  it("validate callback should return successfully on a correct code for a new user", async () => {
+    const authServiceSpies = {
+      retrieve: jest.fn().mockImplementation(() => {
+        throw new MedusaError(MedusaError.Types.NOT_FOUND, "Not found")
+      }),
+      create: jest.fn().mockImplementation(() => {
+        return {
+          entity_id: "test@admin.com",
+          provider: "google",
+        }
+      }),
+    }
+
+    const res = await googleService.validateCallback(
+      {
+        query: {
+          code: "valid-code",
+        },
+      },
+      authServiceSpies
+    )
+
+    expect(res).toEqual({
+      success: true,
+      successRedirectUrl: baseUrl,
+      authIdentity: {
+        entity_id: "test@admin.com",
+        provider: "google",
+      },
+    })
+  })
+
+  it("validate callback should return successfully on a correct code for an existing user", async () => {
+    const authServiceSpies = {
+      retrieve: jest.fn().mockImplementation(() => {
+        return {
+          entity_id: "test@admin.com",
+          provider: "google",
+        }
+      }),
+      create: jest.fn().mockImplementation(() => {
+        return {}
+      }),
+    }
+
+    const res = await googleService.validateCallback(
+      {
+        query: {
+          code: "valid-code",
+        },
+      },
+      authServiceSpies
+    )
+
+    expect(res).toEqual({
+      success: true,
+      successRedirectUrl: baseUrl,
+      authIdentity: {
+        entity_id: "test@admin.com",
+        provider: "google",
+      },
+    })
+  })
+})
diff --git a/packages/modules/providers/auth-google/jest.config.js b/packages/modules/providers/auth-google/jest.config.js
new file mode 100644
index 0000000000..9cf8a99080
--- /dev/null
+++ b/packages/modules/providers/auth-google/jest.config.js
@@ -0,0 +1,7 @@
+module.exports = {
+  transform: {
+    "^.+\\.[jt]s?$": "@swc/jest",
+  },
+  testEnvironment: `node`,
+  moduleFileExtensions: [`js`, `jsx`, `ts`, `tsx`, `json`],
+}
diff --git a/packages/modules/providers/auth-google/package.json b/packages/modules/providers/auth-google/package.json
new file mode 100644
index 0000000000..929b2a61fc
--- /dev/null
+++ b/packages/modules/providers/auth-google/package.json
@@ -0,0 +1,42 @@
+{
+  "name": "@medusajs/auth-google",
+  "version": "0.0.1",
+  "description": "Google OAuth authentication provider for Medusa",
+  "main": "dist/index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/medusajs/medusa",
+    "directory": "packages/modules/providers/auth-google"
+  },
+  "files": [
+    "dist"
+  ],
+  "engines": {
+    "node": ">=20"
+  },
+  "author": "Medusa",
+  "license": "MIT",
+  "scripts": {
+    "prepublishOnly": "cross-env NODE_ENV=production tsc --build",
+    "test": "jest --passWithNoTests src",
+    "test:integration": "jest --forceExit -- integration-tests/**/__tests__/**/*.spec.ts",
+    "build": "rimraf dist && tsc -p ./tsconfig.json",
+    "watch": "tsc --watch"
+  },
+  "devDependencies": {
+    "@types/simple-oauth2": "^5.0.7",
+    "cross-env": "^5.2.1",
+    "jest": "^29.6.3",
+    "msw": "^2.3.0",
+    "rimraf": "^5.0.1",
+    "typescript": "^5.1.6"
+  },
+  "dependencies": {
+    "@medusajs/utils": "^1.11.7",
+    "jsonwebtoken": "^9.0.2"
+  },
+  "keywords": [
+    "medusa-provider",
+    "medusa-provider-auth-google"
+  ]
+}
diff --git a/packages/modules/providers/auth-google/src/index.ts b/packages/modules/providers/auth-google/src/index.ts
new file mode 100644
index 0000000000..34efdea219
--- /dev/null
+++ b/packages/modules/providers/auth-google/src/index.ts
@@ -0,0 +1,10 @@
+import { ModuleProviderExports } from "@medusajs/types"
+import { GoogleAuthService } from "./services/google"
+
+const services = [GoogleAuthService]
+
+const providerExport: ModuleProviderExports = {
+  services,
+}
+
+export default providerExport
diff --git a/packages/modules/providers/auth-google/src/services/google.ts b/packages/modules/providers/auth-google/src/services/google.ts
new file mode 100644
index 0000000000..d83b2dcd0a
--- /dev/null
+++ b/packages/modules/providers/auth-google/src/services/google.ts
@@ -0,0 +1,185 @@
+import {
+  Logger,
+  GoogleAuthProviderOptions,
+  AuthenticationResponse,
+  AuthenticationInput,
+  AuthIdentityProviderService,
+} from "@medusajs/types"
+import { AbstractAuthModuleProvider, MedusaError } from "@medusajs/utils"
+import jwt, { JwtPayload } from "jsonwebtoken"
+
+type InjectedDependencies = {
+  logger: Logger
+}
+
+interface LocalServiceConfig extends GoogleAuthProviderOptions {}
+
+// TODO: Add state param that is stored in Redis, to prevent CSRF attacks
+export class GoogleAuthService extends AbstractAuthModuleProvider {
+  protected config_: LocalServiceConfig
+  protected logger_: Logger
+
+  constructor(
+    { logger }: InjectedDependencies,
+    options: GoogleAuthProviderOptions
+  ) {
+    super({}, { provider: "google", displayName: "Google Authentication" })
+    this.validateConfig(options)
+    this.config_ = options
+    this.logger_ = logger
+  }
+
+  async authenticate(
+    req: AuthenticationInput
+  ): Promise<AuthenticationResponse> {
+    if (req.query?.error) {
+      return {
+        success: false,
+        error: `${req.query.error_description}, read more at: ${req.query.error_uri}`,
+      }
+    }
+
+    return this.getRedirect(this.config_)
+  }
+
+  async validateCallback(
+    req: AuthenticationInput,
+    authIdentityService: AuthIdentityProviderService
+  ): Promise<AuthenticationResponse> {
+    if (req.query && req.query.error) {
+      return {
+        success: false,
+        error: `${req.query.error_description}, read more at: ${req.query.error_uri}`,
+      }
+    }
+
+    const code = req.query?.code ?? req.body?.code
+    if (!code) {
+      return { success: false, error: "No code provided" }
+    }
+
+    const params = `client_id=${this.config_.clientID}&client_secret=${
+      this.config_.clientSecret
+    }&code=${code}&redirect_uri=${encodeURIComponent(
+      this.config_.callbackURL
+    )}&grant_type=authorization_code`
+    const exchangeTokenUrl = new URL(
+      `https://oauth2.googleapis.com/token?${params}`
+    )
+
+    try {
+      const response = await fetch(exchangeTokenUrl.toString(), {
+        method: "POST",
+      }).then((r) => {
+        if (!r.ok) {
+          throw new MedusaError(
+            MedusaError.Types.INVALID_DATA,
+            `Could not exchange token, ${r.status}, ${r.statusText}`
+          )
+        }
+
+        return r.json()
+      })
+
+      const { authIdentity, success } = await this.verify_(
+        response.id_token as string,
+        authIdentityService
+      )
+
+      return {
+        success,
+        authIdentity,
+        successRedirectUrl: this.config_.successRedirectUrl,
+      }
+    } catch (error) {
+      return { success: false, error: error.message }
+    }
+  }
+
+  async verify_(
+    idToken: string | undefined,
+    authIdentityService: AuthIdentityProviderService
+  ) {
+    if (!idToken) {
+      return { success: false, error: "No ID found" }
+    }
+
+    const jwtData = jwt.decode(idToken, {
+      complete: true,
+    }) as JwtPayload
+    const payload = jwtData.payload
+
+    if (!payload.email_verified) {
+      throw new MedusaError(
+        MedusaError.Types.INVALID_DATA,
+        "Email not verified, cannot proceed with authentication"
+      )
+    }
+
+    // TODO: We should probably use something else than email here, like the `sub` field (which is more constant than the email)
+    const entity_id = payload.email
+    const userMetadata = {
+      name: payload.name,
+      picture: payload.picture,
+      given_name: payload.given_name,
+      family_name: payload.family_name,
+    }
+
+    let authIdentity
+
+    try {
+      authIdentity = await authIdentityService.retrieve({
+        entity_id,
+        provider: this.provider,
+      })
+    } catch (error) {
+      if (error.type === MedusaError.Types.NOT_FOUND) {
+        const createdAuthIdentity = await authIdentityService.create({
+          entity_id,
+          provider: this.provider,
+          user_metadata: userMetadata,
+        })
+        authIdentity = createdAuthIdentity
+      } else {
+        return { success: false, error: error.message }
+      }
+    }
+
+    return {
+      success: true,
+      authIdentity,
+    }
+  }
+
+  private getRedirect({ clientID, callbackURL }: LocalServiceConfig) {
+    const redirectUrlParam = `redirect_uri=${encodeURIComponent(callbackURL)}`
+    const clientIdParam = `client_id=${clientID}`
+    const responseTypeParam = "response_type=code"
+    const scopeParam = "scope=email+profile+openid"
+
+    const authUrl = new URL(
+      `https://accounts.google.com/o/oauth2/v2/auth?${[
+        redirectUrlParam,
+        clientIdParam,
+        responseTypeParam,
+        scopeParam,
+      ].join("&")}`
+    )
+
+    return { success: true, location: authUrl.toString() }
+  }
+
+  private validateConfig(config: LocalServiceConfig) {
+    if (!config.clientID) {
+      throw new Error("Google clientID is required")
+    }
+
+    if (!config.clientSecret) {
+      throw new Error("Google clientSecret is required")
+    }
+
+    if (!config.callbackURL) {
+      throw new Error("Google callbackUrl is required")
+    }
+  }
+}
diff --git a/packages/modules/providers/auth-google/tsconfig.json b/packages/modules/providers/auth-google/tsconfig.json
new file mode 100644
index 0000000000..9b6a615689
--- /dev/null
+++ b/packages/modules/providers/auth-google/tsconfig.json
@@ -0,0 +1,30 @@
+{
+  "compilerOptions": {
+    "lib": ["es2021"],
+    "target": "es2021",
+    "outDir": "./dist",
+    "esModuleInterop": true,
+    "declaration": true,
+    "module": "ES2020",
+    "moduleResolution": "node",
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "noImplicitReturns": true,
+    "strictNullChecks": true,
+    "strictFunctionTypes": true,
+    "noImplicitThis": true,
+    "allowJs": true,
+    "skipLibCheck": true,
+    "inlineSourceMap": true /* Emit a single file with source maps instead of having a separate file. */
+  },
+  "include": ["src"],
+  "exclude": [
+    "dist",
+    "build",
+    "src/**/__tests__",
+    "src/**/__mocks__",
+    "src/**/__fixtures__",
+    "node_modules",
+    ".eslintrc.js"
+  ]
+}
diff --git a/yarn.lock b/yarn.lock
index 54649dfda7..c35aad6b8c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4991,6 +4991,21 @@ __metadata:
   languageName: unknown
   linkType: soft
 
+"@medusajs/auth-google@workspace:packages/modules/providers/auth-google":
+  version: 0.0.0-use.local
+  resolution: "@medusajs/auth-google@workspace:packages/modules/providers/auth-google"
+  dependencies:
+    "@medusajs/utils": ^1.11.7
+    "@types/simple-oauth2": ^5.0.7
+    cross-env: ^5.2.1
+    jest: ^29.6.3
+    jsonwebtoken: ^9.0.2
+    msw: ^2.3.0
+    rimraf: ^5.0.1
+    typescript: ^5.1.6
+  languageName: unknown
+  linkType: soft
+
 "@medusajs/auth@workspace:*, @medusajs/auth@workspace:packages/modules/auth":
   version: 0.0.0-use.local
   resolution: "@medusajs/auth@workspace:packages/modules/auth"
@@ -11778,6 +11793,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/simple-oauth2@npm:^5.0.7":
+  version: 5.0.7
+  resolution: "@types/simple-oauth2@npm:5.0.7"
+  checksum: 1cfb87b1ee4b58b30e4f9753271ea73282e707553b9b3360755064e4c7b1e96a01cabc5e83d13841369595ea7e451d3d576bea02340b4f17f9e930f54c08a15e
+  languageName: node
+  linkType: hard
+
 "@types/stack-utils@npm:^1.0.1":
   version: 1.0.1
   resolution: "@types/stack-utils@npm:1.0.1"