zulip/zerver/management/commands/send_custom_email.py

108 lines
4.8 KiB
Python

import hashlib
import shutil
import subprocess
from argparse import ArgumentParser
from typing import Any, Dict, List
from zerver.lib.management import CommandError, ZulipBaseCommand
from zerver.lib.send_email import FromAddress, send_email
from zerver.models import UserProfile
from zerver.templatetags.app_filters import render_markdown_path
def send_custom_email(users: List[UserProfile], options: Dict[str, Any]) -> None:
"""
Can be used directly with from a management shell with
send_custom_email(user_profile_list, dict(
markdown_template_path="/path/to/markdown/file.md",
subject="Email Subject",
from_name="Sender Name")
)
"""
with open(options["markdown_template_path"]) as f:
email_template_hash = hashlib.sha256(f.read().encode('utf-8')).hexdigest()[0:32]
email_id = "zerver/emails/custom_email_%s" % (email_template_hash,)
markdown_email_base_template_path = "templates/zerver/emails/custom_email_base.pre.html"
html_source_template_path = "templates/%s.source.html" % (email_id,)
plain_text_template_path = "templates/%s.txt" % (email_id,)
subject_path = "templates/%s.subject.txt" % (email_id,)
# First, we render the markdown input file just like our
# user-facing docs with render_markdown_path.
shutil.copyfile(options['markdown_template_path'], plain_text_template_path)
rendered_input = render_markdown_path(plain_text_template_path.replace("templates/", ""))
# And then extend it with our standard email headers.
with open(html_source_template_path, "w") as f:
with open(markdown_email_base_template_path) as base_template:
# Note that we're doing a hacky non-Jinja2 substitution here;
# we do this because the normal render_markdown_path ordering
# doesn't commute properly with inline-email-css.
f.write(base_template.read().replace('{{ rendered_input }}',
rendered_input))
with open(subject_path, "w") as f:
f.write(options["subject"])
# Then, we compile the email template using inline-email-css to
# add our standard styling to the paragraph tags (etc.).
#
# TODO: Ideally, we'd just refactor inline-email-css to
# compile this one template, not all of them.
subprocess.check_call(["./scripts/setup/inline-email-css"])
# Finally, we send the actual emails.
for user_profile in users:
context = {
'realm_uri': user_profile.realm.uri,
'realm_name': user_profile.realm.name,
}
send_email(email_id, to_user_ids=[user_profile.id],
from_address=FromAddress.SUPPORT,
reply_to_email=options.get("reply_to"),
from_name=options["from_name"], context=context)
class Command(ZulipBaseCommand):
help = """Send email to specified email address."""
def add_arguments(self, parser: ArgumentParser) -> None:
parser.add_argument('--entire-server', action="store_true", default=False,
help="Send to every user on the server. ")
parser.add_argument('--markdown-template-path', '--path',
dest='markdown_template_path',
required=True,
type=str,
help='Path to a markdown-format body for the email')
parser.add_argument('--subject',
required=True,
type=str,
help='Subject line for the email')
parser.add_argument('--from-name',
required=True,
type=str,
help='From line for the email')
parser.add_argument('--reply-to',
type=str,
help='Optional reply-to line for the email')
self.add_user_list_args(parser,
help="Email addresses of user(s) to send emails to.",
all_users_help="Send to every user on the realm.")
self.add_realm_args(parser)
def handle(self, *args: Any, **options: str) -> None:
if options["entire_server"]:
users = UserProfile.objects.filter(is_active=True, is_bot=False,
is_mirror_dummy=False)
else:
realm = self.get_realm(options)
try:
users = self.get_users(options, realm, is_bot=False)
except CommandError as error:
if str(error) == "You have to pass either -u/--users or -a/--all-users.":
raise CommandError("You have to pass -u/--users or -a/--all-users or --entire-server.")
raise error
send_custom_email(users, options)