NexGate Authentication API

NexGate is a social commerce platform that provides secure authentication services with OTP-based verification. This documentation covers the complete authentication API including registration, login,

API Response Standards

All API responses follow a consistent structure to ensure predictable client integration.

Success Response Structure

{
  "success": true,
  "httpStatus": "OK",
  "message": "Operation completed successfully",
  "action_time": "2024-09-07T15:30:45",
  "data": {
    // Response data object
  }
}

Error Response Structure

{
  "success": false,
  "httpStatus": "BAD_REQUEST",
  "message": "Error description",
  "action_time": "2024-09-07T15:30:45",
  "data": "Detailed error information or validation errors"
}

Response Fields Specification

Field

Type

Description

success

boolean

Indicates if the request was successful

httpStatus

string

HTTP status code as string

message

string

Human-readable message describing the result

action_time

string

ISO 8601 timestamp of when the response was generated

data

object/string

Response payload or error details

Base Configuration

API Base URL

Production: https://apinexgate.glueauth.com/api/v1//auth
Development: http://localhost:8080/api/v1/auth

Required Headers

Content-Type: application/json
Accept: application/json

Authentication Headers (for protected endpoints)

Authorization: Bearer {access_token}

Authentication Flow

The NexGate authentication system follows a secure OTP-based verification process:

Flow Diagram

1. Registration Request → Temp Token + OTP Sent
2. OTP Verification → Access Token + Refresh Token
3. Login Request → Temp Token + OTP Sent  
4. Login OTP Verification → Access Token + Refresh Token
5. Token Refresh → New Access Token

Key Security Features

OTP-based verification for all critical operations
JWT tokens with configurable expiration
Rate limiting on OTP requests
Automatic username generation
Multi-channel OTP delivery support

API Endpoints

Endpoint Access Levels

🔓 PUBLIC - No authentication required 🔒 PROTECTED - Requires valid access token

1. User Registration

🔓 PUBLIC ENDPOINT - No authentication required

Endpoint: POST /register

Description: Creates a new user account and sends verification OTP to the specified channel.

Request Specification

POST /api/v1/auth/register
Content-Type: application/json

{
  "phoneNumber": "+14155552671",
  "password": "PiedPiper2024!",
  "email": "richard.hendricks@piedpiper.com",
  "firstName": "Richard",
  "lastName": "Hendricks", 
  "middleName": "Thomas",
  "verificationChannel": "EMAIL"
}

Request Body Schema

Field

Type

Constraints

Required

Description

phoneNumber

string

E.164 format

✅

International phone number

password

string

Min 8 chars, complexity rules

✅

User password

email

string

Valid email format

✅

User email address

firstName

string

Max 30 characters

✅

User's first name

lastName

string

Max 30 characters

✅

User's last name

middleName

string

Max 30 characters

✅

User's middle name

verificationChannel

enum

See verification channels

✅

OTP delivery method

⚠️ Password Complexity Rules

Minimum 8 characters
At least one uppercase letter (A-Z)
At least one lowercase letter (a-z)
At least one digit (0-9)
At least one special character (@$!%*?&#)

Success Response (200 OK)

{
  "success": true,
  "httpStatus": "OK",
  "message": "Registration successful",
  "action_time": "2024-09-07T15:30:45",
  "data": {
    "tempToken": "eyJhbGciOiJIUzI1NiJ9...",
    "message": "OTP has been sent to your email",
    "expireAt": "2024-09-07T15:40:45"
  }
}

Error Responses

User Already Exists (400)

{
  "success": false,
  "httpStatus": "BAD_REQUEST",
  "message": "User with provided credentials already exist, please login",
  "action_time": "2024-09-07T15:30:45",
  "data": "User with provided credentials already exist, please login"
}

Validation Errors (422)

{
  "success": false,
  "httpStatus": "UNPROCESSABLE_ENTITY", 
  "message": "Validation failed",
  "action_time": "2024-09-07T15:30:45",
  "data": {
    "email": "Email should be valid",
    "password": "Password must be at least 8 characters long, contain at least one uppercase letter, one lowercase letter, one digit, and one special character",
    "phoneNumber": "Phone number must be in valid international format (e.g., +1234567890)"
  }
}

2. Verify Registration OTP

🔓 PUBLIC ENDPOINT - No authentication required

Endpoint: POST /verify-otp

Description: Verifies the OTP sent during registration and completes account setup.

Request Specification

POST /api/v1/auth/verify-otp
Content-Type: application/json

{
  "tempToken": "eyJhbGciOiJIUzI1NiJ9...",
  "otpCode": "123456"
}

Request Body Schema

Field

Type

Constraints

Required

Description

tempToken

string

Valid JWT token

✅

Temporary token from registration

otpCode

string

Exactly 6 digits

✅

OTP received via verification channel

Success Response (200 OK)

{
  "success": true,
  "httpStatus": "OK",
  "message": "Registration completed successfully. You are now logged in.",
  "action_time": "2024-09-07T15:35:45",
  "data": {
    "accessToken": "eyJhbGciOiJIUzI1NiJ9.ACCESS_TOKEN...",
    "refreshToken": "eyJhbGciOiJIUzI1NiJ9.REFRESH_TOKEN...",
    "userData": {
      "id": "550e8400-e29b-41d4-a716-446655440000",
      "userName": "richard-a1B2c3D",
      "firstName": "Richard",
      "lastName": "Hendricks",
      "middleName": "Thomas", 
      "email": "richard.hendricks@piedpiper.com",
      "isVerified": true,
      "isEmailVerified": true,
      "isPhoneVerified": false,
      "roles": ["ROLE_NORMAL_USER"],
      "createdAt": "2024-09-07T15:30:45",
      "editedAt": "2024-09-07T15:35:45"
    }
  }
}

Error Responses

Invalid OTP (403)

{
  "success": false,
  "httpStatus": "FORBIDDEN",
  "message": "Invalid OTP code",
  "action_time": "2024-09-07T15:35:45",
  "data": "Invalid OTP code"
}

Token Expired (403)

{
  "success": false,
  "httpStatus": "FORBIDDEN", 
  "message": "Token has expired",
  "action_time": "2024-09-07T15:35:45",
  "data": "Token has expired"
}

Max Attempts Exceeded (403)

{
  "success": false,
  "httpStatus": "FORBIDDEN",
  "message": "Maximum verification attempts exceeded", 
  "action_time": "2024-09-07T15:35:45",
  "data": "Maximum verification attempts exceeded"
}

3. Resend OTP

🔓 PUBLIC ENDPOINT - No authentication required

Endpoint: POST /resend-otp

Description: Resends OTP for registration, login, or password reset operations.

Request Specification

POST /api/v1/auth/resend-otp
Content-Type: application/json

{
  "tempToken": "eyJhbGciOiJIUzI1NiJ9..."
}

Request Body Schema

Field

Type

Constraints

Required

Description

tempToken

string

Valid JWT token

✅

Temporary token from previous operation

Success Response (200 OK)

{
  "success": true,
  "httpStatus": "OK",
  "message": "OTP resent successfully",
  "action_time": "2024-09-07T15:37:45",
  "data": {
    "newTempToken": "eyJhbGciOiJIUzI1NiJ9.NEW_TOKEN...",
    "message": "OTP has been resent successfully",
    "expireAt": "2024-09-07T15:47:45",
    "attemptsRemaining": 4,
    "nextResendAllowedAt": "2024-09-07T15:39:45"
  }
}

Error Responses

Rate Limit Exceeded (400)

{
  "success": false,
  "httpStatus": "BAD_REQUEST",
  "message": "Resend limit exceeded. Please wait before requesting again.",
  "action_time": "2024-09-07T15:37:45", 
  "data": "Resend limit exceeded. Please wait before requesting again."
}

Invalid Token (403)

{
  "success": false,
  "httpStatus": "FORBIDDEN",
  "message": "Invalid or expired temporary token",
  "action_time": "2024-09-07T15:37:45",
  "data": "Invalid or expired temporary token"
}

🔓 PUBLIC ENDPOINT - No authentication required

Endpoint: POST /login

Description: Authenticates user credentials and sends login OTP.

Request Specification

POST /api/v1/auth/login
Content-Type: application/json

{
  "identifier": "dinesh.chugtai@piedpiper.com",
  "password": "JavaIsBetter123!"
}

Request Body Schema

Field

Type

Constraints

Required

Description

identifier

string

Email, username, or phone

✅

User identifier

password

string

User's password

✅

Account password

Success Response (200 OK)

{
  "success": true,
  "httpStatus": "OK", 
  "message": "Login successful",
  "action_time": "2024-09-07T16:00:45",
  "data": {
    "tempToken": "eyJhbGciOiJIUzI1NiJ9...",
    "message": "OTP has been sent to your email",
    "expireAt": "2024-09-07T16:10:45"
  }
}

Error Responses

User Not Found (404)

{
  "success": false,
  "httpStatus": "NOT_FOUND",
  "message": "User not found",
  "action_time": "2024-09-07T16:00:45",
  "data": "User not found"
}

Invalid Credentials (401)

{
  "success": false,
  "httpStatus": "UNAUTHORIZED",
  "message": "Invalid credentials",
  "action_time": "2024-09-07T16:00:45",
  "data": "Invalid credentials"
}

5. Request Password Reset

🔓 PUBLIC ENDPOINT - No authentication required

Endpoint: POST /psw-reset-otp

Description: Initiates password reset process by sending OTP to user's email.

Request Specification

POST /api/v1/auth/psw-reset-otp
Content-Type: application/json

{
  "email": "gilfoyle@piedpiper.com"
}

Request Body Schema

Field

Type

Constraints

Required

Description

email

string

Valid email format

✅

Registered email address

Success Response (200 OK)

{
  "success": true,
  "httpStatus": "OK",
  "message": "Password reset OTP sent successfully",
  "action_time": "2024-09-07T16:15:45",
  "data": {
    "tempToken": "eyJhbGciOiJIUzI1NiJ9...",
    "message": "Password reset OTP has been sent to your email",
    "expireAt": "2024-09-07T16:25:45"
  }
}

Error Responses

Account Not Found (404)

{
  "success": false,
  "httpStatus": "NOT_FOUND", 
  "message": "No account found with this email",
  "action_time": "2024-09-07T16:15:45",
  "data": "No account found with this email"
}

Account Not Verified (403)

{
  "success": false,
  "httpStatus": "FORBIDDEN",
  "message": "Account is not verified. Please complete registration first.",
  "action_time": "2024-09-07T16:15:45",
  "data": "Account is not verified. Please complete registration first."
}

6. Reset Password

🔓 PUBLIC ENDPOINT - No authentication required

Endpoint: POST /reset-password

Description: Completes password reset using OTP verification.

Request Specification

POST /api/v1/auth/reset-password
Content-Type: application/json

{
  "tempToken": "eyJhbGciOiJIUzI1NiJ9...",
  "code": "123456", 
  "newPassword": "NewSecurePass123!"
}

Request Body Schema

Field

Type

Constraints

Required

Description

tempToken

string

Valid JWT token

✅

Token from password reset request

code

string

6-digit OTP

✅

OTP received via email

newPassword

string

Password complexity rules

✅

New password

Success Response (200 OK)

{
  "success": true,
  "httpStatus": "OK",
  "message": "Password reset successfully",
  "action_time": "2024-09-07T16:20:45",
  "data": "Your password has been updated. You can now login with your new password."
}

Error Responses

Invalid OTP (403)

{
  "success": false,
  "httpStatus": "FORBIDDEN",
  "message": "Invalid OTP code",
  "action_time": "2024-09-07T16:20:45",
  "data": "Invalid OTP code"
}

Password Validation Error (422)

{
  "success": false,
  "httpStatus": "UNPROCESSABLE_ENTITY",
  "message": "Validation failed",
  "action_time": "2024-09-07T16:20:45",
  "data": {
    "newPassword": "Password must be at least 8 characters long, contain at least one uppercase letter, one lowercase letter, one digit, and one special character"
  }
}

7. Refresh Token

🔓 PUBLIC ENDPOINT - No authentication required

Endpoint: POST /refreshToken

Description: Generates a new access token using a valid refresh token.

Request Specification

POST /api/v1/auth/refreshToken
Content-Type: application/json

{
  "refreshToken": "eyJhbGciOiJIUzI1NiJ9.REFRESH_TOKEN..."
}

Request Body Schema

Field

Type

Constraints

Required

Description

refreshToken

string

Valid JWT refresh token

✅

Refresh token from login

Success Response (200 OK)

{
  "success": true,
  "httpStatus": "OK",
  "message": "Token refreshed successful", 
  "action_time": "2024-09-07T17:00:45",
  "data": {
    "newToken": "eyJhbGciOiJIUzI1NiJ9.NEW_ACCESS_TOKEN..."
  }
}

Error Responses

Invalid Refresh Token (401)

{
  "success": false,
  "httpStatus": "UNAUTHORIZED",
  "message": "Invalid token",
  "action_time": "2024-09-07T17:00:45",
  "data": "Invalid token"
}

Expired Refresh Token (401)

{
  "success": false,
  "httpStatus": "UNAUTHORIZED",
  "message": "Refresh token has expired. Please login again",
  "action_time": "2024-09-07T17:00:45", 
  "data": "Refresh token has expired. Please login again"
}

Data Models

AccountResponse Schema

{
  "id": "string (UUID)",
  "userName": "string (auto-generated)",
  "firstName": "string (max 30 chars)",
  "lastName": "string (max 30 chars)", 
  "middleName": "string (max 30 chars)",
  "email": "string (email format)",
  "isVerified": "boolean",
  "isEmailVerified": "boolean",
  "isPhoneVerified": "boolean",
  "roles": ["string array"],
  "createdAt": "string (ISO 8601)",
  "editedAt": "string (ISO 8601)"
}

Token Response Schema

{
  "accessToken": "string (JWT)",
  "refreshToken": "string (JWT)"
}

Temporary Token Response Schema

{
  "tempToken": "string (JWT)",
  "message": "string",
  "expireAt": "string (ISO 8601)",
  "attemptsRemaining": "number (optional)",
  "nextResendAllowedAt": "string (ISO 8601, optional)"
}

Verification Channels Enum

[
  "EMAIL",
  "SMS", 
  "WHATSAPP",
  "VOICE_CALL",
  "PUSH_NOTIFICATION",
  "EMAIL_AND_SMS",
  "SMS_AND_WHATSAPP",
  "ALL_CHANNELS"
]

User Roles Enum

[
  "ROLE_SUPER_ADMIN",
  "ROLE_STAFF_ADMIN", 
  "ROLE_NORMAL_USER"
]

ℹ️ Username Generation Rules

Format: {emailPrefix}-{randomSuffix}
Email prefix extracted before @ symbol
Random suffix: 7 characters (alphanumeric)
Example: richard.hendricks@piedpiper.com → richard-a1B2c3D
Auto-generated to ensure uniqueness

Error Handling

HTTP Status Codes

Status

Description

Usage

200

Successful operations

400

Bad Request

Rate limits, business logic errors

401

Unauthorized

Invalid/expired tokens

403

Forbidden

Verification errors, permissions

404

Not Found

User/resource not found

422

Unprocessable Entity

Validation errors

500

Internal Server Error

Server-side errors

Error Response Patterns

Validation Errors (422)

Structure: data contains field-specific error messages
Format: {"fieldName": "Error message"}
Usage: Form validation failures

⚠️ Validation Error Example

{
  "success": false,
  "httpStatus": "UNPROCESSABLE_ENTITY",
  "message": "Validation failed",
  "action_time": "2024-09-07T15:30:45",
  "data": {
    "email": "Email should be valid",
    "password": "Password requirements not met"
  }
}

Authentication Errors (401/403)

Structure: data contains error description string
Format: Simple string message
Usage: Token validation, OTP verification

Rate Limiting Errors (400)

Structure: data contains rate limit information
Format: String with retry information
Usage: Too many requests

Business Logic Errors (400/404)

Structure: data contains descriptive error message
Format: String explanation
Usage: User not found, account states

Rate Limiting

OTP Request Limits

Operation

Limit

Window

Cooldown

Registration OTP

5 requests

10 minutes

N/A

5 requests

10 minutes

N/A

Password Reset OTP

5 requests

10 minutes

N/A

Resend OTP

5 requests

10 minutes

2 minutes

OTP Verification Limits

Operation

Max Attempts

Action on Exceed

OTP Verification

3 attempts

Token invalidated

Temp Token Usage

1 use

Token invalidated

Token Expiration Times

Token Type

Expiration

Renewable

Access Token

1 hour

Yes (via refresh)

Refresh Token

365 days

Temporary Token

10 minutes

Yes (via resend)

⚠️ Rate Limiting Best Practices

Implement exponential backoff for failed requests
Display remaining attempts to users
Show cooldown timers for resend operations
Handle rate limit responses gracefully

Security Specifications

JWT Token Structure

Algorithm: HS256 (HMAC SHA-256)
Type Claims:
- ACCESS for access tokens
- REFRESH for refresh tokens
- TEMP for temporary tokens
Standard Claims: sub, iat, exp
Custom Claims: tokenType, purpose (for temp tokens)

Password Security

Encoding: BCrypt with configurable rounds
Complexity: Enforced server-side
History: Not tracked (current implementation)
Reset: OTP-based verification required

OTP Security

Generation: Cryptographically secure random 6-digit codes
Storage: Hashed using BCrypt
Delivery: Multiple channels supported
Expiration: 10 minutes from generation
Attempts: Maximum 3 verification attempts

Account Security Features

Email Verification: Required for password reset
Account Verification: Required for full access
Role-Based Access: Three-tier role system
Automatic Bucket Creation: MinIO storage provisioning
Audit Trail: Creation and modification timestamps

ℹ️ Security Recommendations

Store access tokens in memory or sessionStorage
Store refresh tokens in httpOnly cookies when possible
Implement proper CSRF protection
Use HTTPS in production
Validate all input on client and server side

API Version: 1.0 Last Updated: September 7, 2025

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Last updated 5 months ago

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hashtagAPI Response Standards

hashtagSuccess Response Structure

hashtagError Response Structure

hashtagResponse Fields Specification

hashtagBase Configuration

hashtagAPI Base URL

hashtagRequired Headers

hashtagAuthentication Headers (for protected endpoints)

hashtagAuthentication Flow

hashtagFlow Diagram

hashtagKey Security Features

hashtagAPI Endpoints

hashtagEndpoint Access Levels

hashtag1. User Registration

hashtag2. Verify Registration OTP

hashtag3. Resend OTP

hashtag4. User Login

hashtag5. Request Password Reset

hashtag6. Reset Password

hashtag7. Refresh Token

hashtagData Models

hashtagAccountResponse Schema

hashtagToken Response Schema

hashtagTemporary Token Response Schema

hashtagVerification Channels Enum

hashtagUser Roles Enum

hashtagError Handling

hashtagHTTP Status Codes

hashtagError Response Patterns

hashtagRate Limiting

hashtagOTP Request Limits

hashtagOTP Verification Limits

hashtagToken Expiration Times

hashtagSecurity Specifications

hashtagJWT Token Structure

hashtagPassword Security

hashtagOTP Security

hashtagAccount Security Features

API Response Standards

Success Response Structure

Error Response Structure

Response Fields Specification

Base Configuration

API Base URL

Required Headers

Authentication Headers (for protected endpoints)

Authentication Flow

Flow Diagram

Key Security Features

API Endpoints

Endpoint Access Levels

1. User Registration

2. Verify Registration OTP

3. Resend OTP

4. User Login

5. Request Password Reset

6. Reset Password

7. Refresh Token

Data Models

AccountResponse Schema

Token Response Schema

Temporary Token Response Schema

Verification Channels Enum

User Roles Enum

Error Handling

HTTP Status Codes

Error Response Patterns

Rate Limiting

OTP Request Limits

OTP Verification Limits

Token Expiration Times

Security Specifications

JWT Token Structure

Password Security

OTP Security

Account Security Features