Files
MClogger/web/mailer.py
SimolZimol 8f614a08cc modified: web/blueprints/group_admin.py
modified:   web/blueprints/site_admin.py
	modified:   web/mailer.py
2026-04-13 19:10:21 +02:00

109 lines
4.5 KiB
Python

import smtplib
from html import escape
from email.message import EmailMessage
from email.utils import formatdate, make_msgid
from config import Config
def build_from_header(from_email: str, from_name: str | None = None) -> str:
if from_name:
return f"{from_name} <{from_email}>"
return from_email
def force_https_url(url: str) -> str:
if url.startswith("http://"):
return "https://" + url[len("http://"):]
return url
def build_invite_email(
username: str,
invite_url: str,
expiry_text: str,
group_name: str | None = None,
role_name: str | None = None,
) -> tuple[str, str]:
safe_user = escape(username)
safe_url = escape(invite_url)
safe_expiry = escape(expiry_text)
safe_group = escape(group_name) if group_name else None
safe_role = escape(role_name) if role_name else None
if safe_group:
role_part = f" as <strong>{safe_role}</strong>" if safe_role else ""
intro_html = (
f"You have been invited to join the group <strong>{safe_group}</strong> "
f"on MCLogger{role_part}."
)
role_text = f" as {role_name}" if role_name else ""
intro_text = f"You have been invited to join the group '{group_name}' on MCLogger{role_text}."
else:
intro_html = "You have been invited to create an account on <strong>MCLogger</strong>."
intro_text = "You have been invited to create an account on MCLogger."
text_body = (
f"Hello {username},\n\n"
f"{intro_text}\n"
f"Open this link to create your account:\n\n{invite_url}\n\n"
f"This invite expires {expiry_text}.\n"
)
html_body = f"""
<!doctype html>
<html>
<body style="margin:0;padding:0;background:#f6f8fb;font-family:Arial,Helvetica,sans-serif;color:#1f2937;">
<table role="presentation" width="100%" cellspacing="0" cellpadding="0" style="padding:24px 12px;">
<tr>
<td align="center">
<table role="presentation" width="100%" cellspacing="0" cellpadding="0" style="max-width:620px;background:#ffffff;border:1px solid #e5e7eb;border-radius:12px;overflow:hidden;">
<tr>
<td style="background:#111827;color:#ffffff;padding:16px 20px;font-size:18px;font-weight:700;">
MCLogger Invitation
</td>
</tr>
<tr>
<td style="padding:24px 20px 20px 20px;font-size:14px;line-height:1.6;">
<p style="margin:0 0 12px 0;">Hello <strong>{safe_user}</strong>,</p>
<p style="margin:0 0 12px 0;">{intro_html}</p>
<p style="margin:0 0 20px 0;">Click the button below to create your account:</p>
<p style="margin:0 0 20px 0;">
<a href="{safe_url}" style="display:inline-block;background:#2563eb;color:#ffffff;text-decoration:none;font-weight:700;padding:11px 16px;border-radius:8px;">Create Account</a>
</p>
<p style="margin:0 0 12px 0;">This invite expires <strong>{safe_expiry}</strong>.</p>
<p style="margin:16px 0 0 0;font-size:12px;color:#6b7280;word-break:break-all;">If the button does not work, use this link:<br>{safe_url}</p>
</td>
</tr>
</table>
</td>
</tr>
</table>
</body>
</html>
""".strip()
return text_body, html_body
def send_mail(settings: dict, recipient: str, subject: str, text_body: str, html_body: str | None = None):
msg = EmailMessage()
msg["Subject"] = subject
msg["From"] = build_from_header(settings["from_email"], settings.get("from_name"))
msg["To"] = recipient
msg["Date"] = formatdate(localtime=True)
sender_domain = (settings.get("from_email", "noreply@example.com").split("@")[-1] or "example.com")
msg["Message-ID"] = make_msgid(domain=sender_domain)
msg.set_content(text_body)
if html_body:
msg.add_alternative(html_body, subtype="html")
with smtplib.SMTP(settings["host"], settings["port"], timeout=Config.MAIL_TIMEOUT) as smtp:
smtp.ehlo()
if settings.get("use_tls", True):
smtp.starttls()
smtp.ehlo()
smtp.login(settings["username"], settings["password"])
smtp.send_message(msg)