# -*- coding: utf-8 -*-
"""
Created on Thu Jan  9 00:09:12 2020

@author: sky
"""

import smtplib

from string import Template

from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import email.mime.application

MY_ADDRESS = 'venti@binary-kitchen.de'
PASSWORD = 'FILL ME'

pdf_dir = 'pdfs/'
host_ = 'mail.binary-kitchen.de'
port_ = 587

dry_run = True # do not send mail, but set everything up

def get_contacts(filename):
    """
    Return two lists names, emails containing names and email addresses
    read from a file specified by filename.
    """
    
    names = []
    pdfs = []
    emails = []
    with open(filename, mode='r', encoding='utf-8') as contacts_file:
        for a_contact in contacts_file:
            names.append(a_contact.split(";")[0])
            pdfs.append(a_contact.split(";")[1])
            emails.append((a_contact.split(";")[2].strip()))
    return names, pdfs, emails

def read_template(filename):
    """
    Returns a Template object comprising the contents of the 
    file specified by filename.
    """
    
    with open(filename, 'r', encoding='utf-8') as template_file:
        template_file_content = template_file.read()
    return Template(template_file_content)

def main():
    names, pdfs, emails = get_contacts('addresslist.txt') # read contacts
    message_template = read_template('message.txt')

    # set up the SMTP server
    s = smtplib.SMTP(host=host_, port=port_)
    s.starttls()
    s.login(MY_ADDRESS, PASSWORD)

    # For each contact, send the email:
    for name, pdf, email_ in zip(names, pdfs, emails):
        msg = MIMEMultipart()       # create a message
        

        # add in the actual person name to the message template
        message = message_template.substitute(PERSON_NAME=name.title())

        # Prints out the message body for our sake
        # print(message)

        # setup the parameters of the message
        msg['From']=MY_ADDRESS
        msg['To']=email_
        msg['Subject']="Mitgliedsbeitrags- und Spendenquittung Binary Kitchen 2019"
        
        # add in the message body
        msg.attach(MIMEText(message, 'plain'))
        
        # PDF attachment
        filename=pdf_dir + pdf        
        try:
            fp=open(filename,'rb')    

            att = email.mime.application.MIMEApplication(fp.read(),_subtype="pdf")
            fp.close()
            att.add_header('Content-Disposition','attachment',filename=filename)
            msg.attach(att)
            
            # send the message via the server set up earlier.
            if dry_run == False:
                try:
                    s.send_message(msg)
                except:
                    print("Could not send to",name, pdf, email_)     
            else:
                print("Simulating...sending",name, pdf, email_)                
      
        except FileNotFoundError:
            print(filename, 'File does not exist. Mail was not send')        
            
        del msg
        
    # Terminate the SMTP session and close the connection
    s.quit()
    
if __name__ == '__main__':
    main()