app-MAIL-temp/app/newsletter_utils.py

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import os
from jinja2 import Environment, FileSystemLoader
from app.config import ROOT_DIR, URL
from app.email_utils import send_email
from app.handler.unsubscribe_encoder import UnsubscribeEncoder, UnsubscribeAction
from app.log import LOG
from app.models import NewsletterUser, Alias
def send_newsletter_to_user(newsletter, user) -> (bool, str):
"""Return whether the newsletter is sent successfully and the error if not"""
try:
templates_dir = os.path.join(ROOT_DIR, "templates", "emails")
env = Environment(loader=FileSystemLoader(templates_dir))
html_template = env.from_string(newsletter.html)
text_template = env.from_string(newsletter.plain_text)
comm_email, unsubscribe_link, via_email = user.get_communication_email()
if not comm_email:
return False, f"{user} not subscribed to newsletter"
comm_alias = Alias.get_by(email=comm_email)
comm_alias_id = -1
if comm_alias:
comm_alias_id = comm_alias.id
unsubscribe_oneclick = unsubscribe_link
if via_email and comm_alias_id > -1:
unsubscribe_oneclick = UnsubscribeEncoder.encode(
UnsubscribeAction.DisableAlias,
comm_alias_id,
force_web=True,
).link
send_email(
comm_email,
newsletter.subject,
text_template.render(
user=user,
URL=URL,
),
html_template.render(
user=user,
URL=URL,
unsubscribe_oneclick=unsubscribe_oneclick,
),
unsubscribe_link=unsubscribe_link,
unsubscribe_via_email=via_email,
)
NewsletterUser.create(newsletter_id=newsletter.id, user_id=user.id, commit=True)
return True, ""
except Exception as err:
LOG.w(f"cannot send {newsletter} to {user}", exc_info=True)
return False, str(err)
def send_newsletter_to_address(newsletter, user, to_address) -> (bool, str):
"""Return whether the newsletter is sent successfully and the error if not"""
try:
templates_dir = os.path.join(ROOT_DIR, "templates", "emails")
env = Environment(loader=FileSystemLoader(templates_dir))
html_template = env.from_string(newsletter.html)
text_template = env.from_string(newsletter.plain_text)
send_email(
to_address,
newsletter.subject,
text_template.render(
user=user,
URL=URL,
),
html_template.render(
user=user,
URL=URL,
),
)
NewsletterUser.create(newsletter_id=newsletter.id, user_id=user.id, commit=True)
return True, ""
except Exception as err:
LOG.w(f"cannot send {newsletter} to {user}", exc_info=True)
return False, str(err)