society-self-service/ssmembership/management/commands/sendonboardemail.py

113 lines
4.1 KiB
Python
Raw Normal View History

2019-03-06 10:43:32 +11:00
# Society Self-Service
# Copyright © 2018-2019 Yingtong Li (RunasSudo)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import boto3
from botocore.exceptions import ClientError
import premailer
from django.core.management.base import BaseCommand, CommandError
from django.conf import settings
from django.template import loader
from django.urls import reverse
from ssmembership.monboard import get_members, set_emailed_by_email
import hmac
import logging
import time
import urllib.parse
class Command(BaseCommand):
help = 'Send emails for membership onboarding'
def add_arguments(self, parser):
parser.add_argument('ids', nargs='*', type=int, help='Members with ID numbers equal to these values will be emailed (default all)')
parser.add_argument('--render', action='store_true', help='Render to stdout instead of sending emails')
def handle(self, *args, **options):
template_html = loader.get_template('ssmembership/email/onboard.html')
template_txt = loader.get_template('ssmembership/email/onboard.txt')
members = get_members()
if len(options['ids']) > 0:
members = [member for member in members if member[0] in options['ids']]
else:
raise Exception('Must provide IDs')
client = boto3.client('ses', aws_access_key_id=settings.AWS_KEY_ID, aws_secret_access_key=settings.AWS_SECRET, region_name=settings.AWS_REGION)
def send_mail(**kwargs):
for i in range(0, 10):
try:
client.send_email(**kwargs)
return
except ClientError as e:
if e['Error']['Code'] == 'Throttling' and e['Error']['Message'] == 'Maximum sending rate exceeded.':
wait_time = max(10*(2**i), 5000)
self.stdout.write(self.style.NOTICE('Reached maximum sending rate, waiting {} ms'.format(wait_time)))
time.sleep(wait_time/1000)
else:
raise e
raise Exception('Reached maximum number of retries')
for member in members:
#_id, student_id, email, first_name, last_name, year, is_msa, phone, date, purchased, imported, emailed
if member[10] or member[11]:
continue
sig = hmac.new(settings.SECRET_KEY_MEMBERSIG.encode('utf-8'), member[2].encode('utf-8'), 'sha256').hexdigest()
renew_url = reverse('monboard_signed') + '?' + urllib.parse.urlencode({'email': member[2], 'sig': sig})
template_args = {
'name': member[3].strip() + ' ' + member[4].strip(),
'renew_url': renew_url,
'baseurl': 'https://' + settings.ALLOWED_HOSTS[0],
'purchased': member[10]
}
content_html = premailer.Premailer(template_html.render(template_args), cssutils_logging_level=logging.ERROR).transform()
content_txt = template_txt.render(template_args)
if options['render']:
self.stdout.write('Content-Type: multipart/alternative; boundary=boundary\n\n--boundary\nContent-Type: text/html; charset=utf-8\n\n' + content_html + '\n--boundary\nContent-Type: text/plain; charset=utf-8\n\n' + content_txt + '\n--boundary')
else:
self.stdout.write('Emailing {} at {}'.format(member[0], member[2]))
send_mail(
Destination={
'ToAddresses': [member[2]],
},
Message={
'Body': {
'Html': {
'Charset': 'utf-8',
'Data': content_html,
},
'Text': {
'Charset': 'utf-8',
'Data': content_txt,
},
},
'Subject': {
'Charset': 'utf-8',
'Data': 'Activate your ' + settings.ORG_NAME + ' membership',
},
},
Source='{} <{}>'.format(settings.ORG_NAME, settings.AWS_SENDER_EMAIL),
)
set_emailed_by_email(member[2])