joe-philip/pay_first

AI Summary: Create a signup API endpoint that accepts user registration data (first_name, last_name, user_name, password), validates the data according to specified rules (e.g., required fields, unique username, strong password criteria), and handles successful registration or appropriate error responses.

AI Summary: Implement a login API endpoint that validates user credentials (username and password) against a database. Upon successful authentication, the API should return a JSON response containing the user's first name, last name, username, date joined, and a unique authentication token.