from sqlalchemy.orm import Session
from models.contact_form import ContactForm
from schemas.contact_form import ContactFormCreate
import re

def create_contact_form(db: Session, contact_data: ContactFormCreate) -> ContactForm:
    """
    Creates a new contact form in the database.

    Args:
        db (Session): The database session.
        contact_data (ContactFormCreate): The data for the contact form to create.

    Returns:
        ContactForm: The newly created contact form object.
    """
    validate_contact_form_data(contact_data)
    db_contact_form = ContactForm(**contact_data.dict())
    db.add(db_contact_form)
    db.commit()
    db.refresh(db_contact_form)
    return db_contact_form

def validate_contact_form_data(contact_data: ContactFormCreate) -> None:
    """
    Validates the contact form data.

    Args:
        contact_data (ContactFormCreate): The contact form data to validate.

    Raises:
        ValueError: If any of the required fields are missing or the email is invalid.
    """
    if not contact_data.name:
        raise ValueError("Name is required")
    if not contact_data.email:
        raise ValueError("Email is required")
    if not contact_data.message:
        raise ValueError("Message is required")
    if not is_valid_email(contact_data.email):
        raise ValueError("Invalid email format")

def is_valid_email(email: str) -> bool:
    """
    Checks if the given email is in a valid format.

    Args:
        email (str): The email address to validate.

    Returns:
        bool: True if the email is valid, False otherwise.
    """
    pattern = r'^[\w\.-]+@[\w\.-]+\.\w+$'
    return bool(re.match(pattern, email))