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LT_Janitorial_Quality_Control/app/enrollment/mailer.py
T

105 lines
3.8 KiB
Python

"""
app/enrollment/mailer.py
------------------------
The enrollment confirmation email.
Sent to the requester after a submission is stored. One job, and it must never
be able to break that: the record is already safely on disk before this runs,
so every failure path here is logged and swallowed. A bounced confirmation must
not cost the customer their enrollment.
Sending happens on a background thread (rule 14 — never block the HTTP
response), and the From identity comes from branded_sender() so it stays an
SMTP-authorized address that actually delivers (rules 64 / 76).
This is the only part of app/enrollment that touches shared mail
infrastructure; it still imports no models and writes no DB row.
"""
import logging
import threading
from flask import current_app, render_template
logger = logging.getLogger(__name__)
def _text_body(record, people, corrections_email):
"""Plain-text alternative — some recipients see only this."""
lines = [
f'Hi {record.get("request_by") or "there"},',
'',
'Thank you — we have received your JQC enrollment form.',
'',
f'Reference: {record.get("id")}',
f'Project: {record.get("project_name")}',
'',
f'People to be set up ({len(people)}):',
]
for i, person in enumerate(people, start=1):
lines.append(
f' {i}. {person["name"]}{person["role_label"]}{person["email"]}'
)
lines += [
'',
'Our team will create these accounts. Each person will receive their own '
'email invitation with sign-in instructions.',
'',
f'If anything above is wrong, simply send an email to '
f'{corrections_email}, and we will correct it.',
'',
'JQC by L.T Services, Inc',
]
return '\n'.join(lines)
def send_confirmation(record, base_url=None):
"""Email the requester a copy of what they submitted. Never raises."""
email = (record.get('requester_email') or '').strip()
if not email:
return
if not current_app.config.get('MAIL_SERVER'):
logger.warning('ENROLLMENT EMAIL SKIPPED | no MAIL_SERVER | id=%s',
record.get('id'))
return
try:
from flask_mail import Message
from app import mail
from app.utils.mail_utils import branded_sender
from . import schema
effective_base = (base_url
or current_app.config.get('APP_BASE_URL', '')).rstrip('/')
people = schema.people_of(record)
msg = Message(
subject = f'[JQC] Enrollment received — {record.get("project_name")}',
sender = branded_sender(effective_base),
recipients = [email],
body = _text_body(record, people, schema.CORRECTIONS_EMAIL),
html = render_template('enrollment/email_confirmation.html',
record=record, people=people,
schema=schema),
)
app = current_app._get_current_object()
def _send():
with app.app_context():
try:
mail.send(msg)
logger.info('ENROLLMENT EMAIL SENT | to=%s | id=%s',
email, record.get('id'))
except Exception as exc:
logger.error('ENROLLMENT EMAIL FAILED | to=%s | id=%s | error=%s',
email, record.get('id'), exc)
threading.Thread(target=_send, daemon=True).start()
except Exception:
# Building the message failed (bad template, mail misconfigured, …).
# The submission is already saved — log it and move on.
logger.exception('ENROLLMENT EMAIL BUILD FAILED | id=%s', record.get('id'))