import smtplib
import email
import email.utils

from urllib.parse import urlparse

from dbsettings.functions import getValue

class BaseMailProvider:
    @property
    def get_name(self):
        return "Base Mail Provider"

    @property
    def get_logo(self):
        return ""

    def send_message(self, message):
        raise NotImplementedError(f"{type(self)} does not implement send_message()!")

    def send_mail(self, subject, content, recipients, cc=[], bcc=[], headers={}, sender=getValue("core.mail.sender", "expephalon@localhost")):
        message = email.message_from_string(content)
        headers["From"] = sender
        headers["To"] = recipients if type(recipients) == str else ",".join(recipients)
        headers["Cc"] = cc if type(cc) == str else ",".join(cc)
        headers["Bcc"] = bcc if type(bcc) == str else ",".join(bcc)
        headers["Subject"] = subject
        headers["Message-ID"] = email.utils.make_msgid("expephalon", urlparse(getValue("core.base_url", "http://localhost/").split(":")[1]).netloc)
        headers["Date"] = email.utils.formatdate()
        for header, value in headers.items():
            if value:
                message.add_header(header, value)
        return self.send_message(message)

class SMTPMailProvider(BaseMailProvider):
    def __init__(self, host=getValue("core.smtp.host", "localhost"), port=int(getValue("core.smtp.port", 0)), username=getValue("core.smtp.username", "") or None, password=getValue("core.smtp.password", "")):
        self.smtp = smtplib.SMTP(host, port)
        if username:
            self.smtp.login(username, password)

    @property
    def get_name(self):
        return "SMTP Mail"

    def send_message(self, message):
        return self.smtp.send_message(message)