Oauth2.O

Step-by-step approach for implementing OAuth2.0-style authentication in GTWY using the given route structure.

🗂️ Overview of Routes

🔐 Step-by-Step OAuth2.0-style Flow

1. Client fetches auth_token

Route

GET /auth_token

Controller Logic: CreateAuthToken

• Generates a random auth_token (14-character identifier).

• If auth_token doesn’t already exist in organization’s metadata, it saves it in the DB.

• Returns:

  {
      "auth_token": "(14-character identifier)"
  }

2. Client saves client_id & redirection_url

Route

POST /

Payload

{
  "client_id": "CLIENT_ID",
  "redirection_url": "https://client-app.com/oauth/callback"
}

Returns

{
  "success": true,
  "message": "Auth token saved successfully"
}

3. Client verifies token and receives access credentials

Route

POST /verify

Payload

{
  "client_id": "CLIENT_ID",
  "redirection_url": "https://client-app.com/oauth/callback"
}

Returns

{
  "success": true,
  "message": "Auth token verified successfully",
  "access_token": "ACCESS_TOKEN",
  "refresh_token": "REFRESH_TOKEN"
}

4. Client refreshes access token using refresh token

Route

POST /refresh

Payload

{
  "refresh_token": "REFRESH_TOKEN"
}

Logic:

• If valid:

  • Re-issues a new access_token.

• If invalid:

  • Returns a 401 with message.

Returns

{
  "success": true,
  "message": "Access token refreshed successfully",
  "access_token": "NEW_ACCESS_TOKEN"
}

📌 Notes

• access_token is typically short-lived and used for authenticated API requests.

• refresh_token is longer-lived and used to regenerate access_token.

• You may optionally store token expiry and revoke logic for security.

✅ Summary