import logging
import traceback

from django.core.mail.backends.base import BaseEmailBackend
from .models import FeedbackFromForm, EmailConnectionSettings
from django.core.mail import get_connection

logger = logging.getLogger(__name__)


class CustomMailBackend(BaseEmailBackend):
    def send_messages(self, email_messages):
        try:
            email_settings: EmailConnectionSettings = EmailConnectionSettings.objects.all().first()
            smtp_backend = get_connection(
                backend="django.core.mail.backends.smtp.EmailBackend",
                host=email_settings.host,
                port=email_settings.port,
                use_tls=email_settings.use_tls,
                use_ssl=email_settings.use_ssl,
                **{
                    'username': email_settings.username if email_settings.username else None,
                    'password': email_settings.password if email_settings.password else None,
                    'ssl_keyfile': email_settings.ssl_keyfile if email_settings.use_ssl else None,
                    'ssl_certfile': email_settings.ssl_certfile if email_settings.use_ssl else None
                }
            )
        except Exception as e:
            logger.error(f"Failed to initialize SMTP connection: {e}")
            print(traceback.format_exc())
            for email in email_messages:
                FeedbackFromForm.objects.create(
                    email=email.to[0],
                    subject=email.subject,
                    body=email.body,
                    success=False,
                    error_message=str(e)
                )
            return 0
        for email in email_messages:
            if email_settings and email_settings.username:
                email.from_email = email_settings.username
            feedback: FeedbackFromForm = FeedbackFromForm.objects.create(
                email=email.to[0],
                subject=email.subject,
                body=email.body,
            )

            try:
                smtp_backend.send_messages([email])
                feedback.success = True
                feedback.save()

            except Exception as e:
                feedback.error_message = str(e)
                feedback.save()
                logger.error(f"Failed to send email to {email.to[0]}: {e}")
                print(traceback.format_exc())

        return len(email_messages)