import re


class SignupModel:
    def __init__(self, username:str, password:str, email:str):
        self.username = username
        self.password = password
        self.email = email

    def validate(self):
        errors = []

        # Check if username, password, and email are provided
        if not self.username:
            errors.append("Username is required.")
        if len(self.username) < 8:
            errors.append("Username must be at least 8 characters.")
        if not self.password:
            errors.append("Password is required.")
        if len(self.password) < 8:
            errors.append("Password must be at least 8 characters.")
        if not self.email:
            errors.append("Email is required.")

        email_pattern = re.compile(r"[^@]+@[^@]+\.[^@]+")
        if not email_pattern.match(self.email):
            errors.append("Invalid email format.")

        if errors:
            return False, errors

        # If all validations pass, return True
        return True, []