User Registration API

[AchilovMirzojafar]

As a backend service
I want to provide a registration endpoint
So that new users can create accounts

Endpoint: POST /api/auth/register

Request Body:

{
  "email": "user@example.com",
  "password": "SecurePass123!"
}

Responsibilities:

• Validate email format and uniqueness
• Validate password strength (min 8 chars, at least 1 uppercase, 1 lowercase, 1 number)
• Hash password using bcrypt
• Create user document in MongoDB
• Generate JWT token with user ID and email
• Return token and user data (excluding password)

Response:

{
  "success": true,
  "token": "jwt_token_here",
  "user": {
    "id": "user_id",
    "email": "user@example.com",
    "createdAt": "2024-01-01T00:00:00Z"
  }
}

Error Handling:

• 400: Invalid email/password format
• 409: Email already exists
• 500: Server error