send_email.py

#!/usr/bin/python3
# -*- coding: UTF-8 -*-

# # # imports
import bs4
import gc
import logging
from datetime import datetime, timedelta
from pathlib import Path
import smtplib
import json
from email.mime.application import MIMEApplication
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from xhtml2pdf import pisa

# set up logging TODO: do this for main script as well
#logging.basicConfig(filename='ndvi-report-mailer.log', level=logging.DEBUG)

# no_timeout = Timeout(connect=None, read=None)
# http = PoolManager(timeout=no_timeout)

# general smtp mailer vars
sendtest = False


def sendEmail(test, project_data, credentials_path, path_to_pdf):
    with open(credentials_path) as c:
        credentials = json.load(c)
    fromaddr = credentials['fromaddr']
    # recipients list
    if test:
        addr = ['g.john@bp-la.com']
        bcc = ['gilbert.john@outlook.de']
    else:
        addr = credentials['toaddr']
        bcc = credentials['tobcc']

    # mail vars
    msgRoot = MIMEMultipart('related')
    msgRoot['From'] = fromaddr
    msgRoot['To'] = ','.join(addr)
    msgRoot['Subject'] = f"{ project_data['two_weeks']['project_name']}: Vegetation Cover Report {datetime.now().strftime('%d.%m.%Y') }"
    msgRoot.preamble = 'This is a multi-part message in MIME format.'

    # Encapsulate the plain and HTML versions of the message body in an
    # 'alternative' part, so message agents can decide which they want to display.
    msgAlternative = MIMEMultipart('alternative')
    msgRoot.attach(msgAlternative)

    text = f'Dear all, <br> Here we report on the change in vegetation health for the { project_data["two_weeks"]["project_name"]}. The results are based on the analysis of the Sentinel 2 Satellite data. As soon as new data becomes available (every 7-30 days) we send this report. \
    <br><br>Please contact mailer@b-systems.com for any feedback and if you do not want to receive further emails.<br><br>\
    Kind regards<br>boedeker systems<br>b-systems.com<br>\
    <img src="cid:image1" width="200"><br>'
    msgText = MIMEText(
        text, 'html'
    )
    msgAlternative.attach(msgText)
    # This example assumes the image is in the current directory
    fp = open(Path('static/bpla_logo_blau.png').resolve(), 'rb')
    msgImage = MIMEImage(fp.read())
    fp.close()

    # Define the image's ID as referenced above
    msgImage.add_header('Content-ID', '<image1>')
    msgRoot.attach(msgImage)

    with open(path_to_pdf, 'rb') as f:
        pdf_attach = MIMEApplication(f.read(), _subtype='pdf')
    pdf_attach.add_header('Content-Disposition', 'attachment', filename=str(path_to_pdf.split('/')[-1]))
    msgRoot.attach(pdf_attach)
    # For sending the mail, we have to convert the object to a string, and then use the same prodecure as above to send
    # using the SMTP server.
    server = smtplib.SMTP('smtp.1und1.de', 587)
    server.starttls()
    server.ehlo()
    server.login(fromaddr, credentials['login_pw'])
    server.sendmail(fromaddr, addr + bcc, msgRoot.as_string())
    server.quit()
    gc.collect()

def open_project_date(json_file):
    with open(json_file, 'r', encoding='utf-8') as f:
        try:
            data = json.load(f)
            return data
        except:
            print('Could not open json file.')