from app.views import get_serializer
from app.models import *
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from rest_framework.decorators import api_view
from rest_framework import status
from rest_framework.response import Response
from email.utils import formataddr
import smtplib


#=============================================================================
def send_via_zeptomail(receiver, subject, content, sender):
    port = 587
    smtp_server = "smtp.zeptomail.com"
    username="emailapikey"
    password = "wSsVR60l/0LwDf8szz2vc+o/mF5WB1PyRE4ri1Wm7nevGvjK9cdtlUWbV1LyG6UdEG8/HDZBp7x8kBoH1joKjNwkzFFUCiiF9mqRe1U4J3x17qnvhDzMWGhbmxCIKY4JxglskmZhFs1u"

    # log sent
    obj = Email_Sent(subject=subject, receiver=receiver, content=content, status=Send_Status.objects.get(pk=1))
    try:
        info = Email_Setup.objects.get(pk=sender)
        receiver = receiver.split(";")
        
        # log
        obj.save()
        sent_list = []
        for email in receiver:
            message = MIMEMultipart("alternative")
            message["Subject"] = subject
            message["From"] = formataddr((info.display_name, info.email))
            message["To"] = email
            # Turn these into plain/html MIMEText objects
            part = MIMEText(content, "html")

            # Add HTML/plain-text parts to MIMEMultipart message
            # The email client will try to render the last part first
            message.attach(part)

            # Create secure connection with server and send email
            server = smtplib.SMTP(smtp_server, port)
            server.starttls()
            server.login(username, password)
            server.send_message(message)
            sent_list.append(email)

        obj.status = Send_Status.objects.get(pk=2)
        obj.save()
        result = True

    except Exception as ex:
        print(ex)
        obj.status = Send_Status.objects.get(pk=3)
        obj.save()
        result = False
    
    return result


#=============================================================================
def send_one_by_one(receiver, subject, content, sender):
    # log sent
    obj = Email_Sent(subject=subject, receiver=receiver, content=content, status=Send_Status.objects.get(pk=1))
    try:
        info = Email_Setup.objects.get(pk=sender)
        receiver = receiver.split(";")
        
        # log
        obj.save()
        sent_list = []
        for email in receiver:
            message = MIMEMultipart("alternative")
            message["Subject"] = subject
            message["From"] = formataddr((info.display_name, info.email))
            message["To"] = email
            # Turn these into plain/html MIMEText objects
            part = MIMEText(content, "html")

            # Add HTML/plain-text parts to MIMEMultipart message
            # The email client will try to render the last part first
            message.attach(part)

            # Create secure connection with server and send email
            server = smtplib.SMTP(info.smtp, info.port)
            server.starttls()
            server.login(info.email, info.password)
            server.sendmail(info.email, email, message.as_string())
            sent_list.append(email)

        obj.status = Send_Status.objects.get(pk=2)
        obj.save()
        result = True

    except Exception as ex:
        print(ex)
        obj.status = Send_Status.objects.get(pk=3)
        obj.save()
        result = False
    
    return result


#=============================================================================
def send_all(receiver, subject, content, sender):
    try:
        info = Email_Setup.objects.get(pk=sender)
        message = MIMEMultipart("alternative")
        message["Subject"] = subject
        message["From"] = formataddr((info.display_name, info.email))
        receiver = receiver.split(";")
        message["To"] = ", ".join(receiver)

        # Turn these into plain/html MIMEText objects
        part = MIMEText(content, "html")

        # Add HTML/plain-text parts to MIMEMultipart message
        # The email client will try to render the last part first
        message.attach(part)

        # Create secure connection with server and send email
        server = smtplib.SMTP(info.smtp, info.port)
        server.starttls()
        server.login(info.email, info.password)
        server.sendmail(info.email, receiver, message.as_string())
        result = True
    except Exception as ex:
        print(ex)
        result = False

    Model, serializer_class = get_serializer('Email_Sent')
    data = {"subject": subject, "receiver": message["To"], "content": content, "status": 2 if result==True else 3}
    serializer = serializer_class(data=data)
    serializer.save() if serializer.is_valid() else print(serializer.errors)
    return result


#=============================================================================
@api_view(['POST'])
def send_email(request):
  subject = request.data.get('subject')
  receiver = request.data.get('to')
  content = request.data.get('content')
  sender = 1
  if 'sender' in request.data:
      sender = request.data.get('sender')
  
  # send email
  result = send_via_zeptomail(receiver, subject, content, sender)

  if result:
    return Response({'message': 'Send success'}, status=200)
  else:
    return Response({'message': 'Send failed'}, status=500)