import smtplib
from datetime import datetime
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.header import Header
from . import LOGGER

class EmailController():

    def __init__(self, smtpServer, user, passwd, port = 587, email = ""):
        self.smtpServer = smtpServer
        self.port = port
        self.user = user
        self.passwd = passwd
        if email:
            self.email = email
        else:
            self.email = user

    def __connect__(self):
        self.smtp = smtplib.SMTP(self.smtpServer, self.port)
        self.smtp.starttls()
        self.smtp.login(self.user, self.passwd)

    def sendMail(self, user):
        try:
            if user.mail == 'None' or not user.mail:
                LOGGER.debug("cant send email to {}. Has no email-address. {}".format(user.uid, {'error': True, 'user': {'userId': user.uid, 'firstname': user.firstname, 'lastname': user.lastname}}))
                raise Exception("no valid Email")
            msg = MIMEMultipart()
            msg['From'] = self.email
            msg['To'] = user.mail
            msg['Subject'] = Header('Gerücht, bezahle deine Schulden!', 'utf-8')
            sum = user.getGeruecht(datetime.now().year).getSchulden()
            if sum < 0:
                type = 'Schulden'
                add = 'Bezahle diese umgehend an den Finanzer.'
            else:
                type = 'Guthaben'
                add = ''
            text = MIMEText("Hallo {} {},\nDu hast {} im Wert von {:.2f} €. {}\n\nDiese Nachricht wurde automatisch erstellt.".format(user.firstname, user.lastname, type, abs(sum)/100, add), 'plain', 'utf-8')
            msg.attach(text)
            LOGGER.debug("Send email to {}: '{}'".format(user.uid, msg.as_string()))
            self.__connect__()
            self.smtp.sendmail(self.email, user.mail, msg.as_string())
            LOGGER.debug("Sended email to {}. {}".format(user.uid, {'error': False, 'user': {'userId': user.uid, 'firstname': user.firstname, 'lastname': user.lastname}}))
            return {'error': False, 'user': {'userId': user.uid, 'firstname': user.firstname, 'lastname': user.lastname}}
        except Exception:
            return {'error': True, 'user': {'userId': user.uid, 'firstname': user.firstname, 'lastname': user.lastname}}