Sprint 15: User-Profil (Bio, Wohnort, Erfahrung, Social, Avatar, Mitglied-seit)
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148
backend/mailer.py
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148
backend/mailer.py
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"""
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BAN YARO — E-Mail-Versand
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Unterstützt zwei Backends (wird automatisch gewählt):
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1. Brevo REST-API — wenn BREVO_API_KEY gesetzt (bevorzugt)
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2. SMTP — wenn SMTP_HOST gesetzt (Fallback)
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"""
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import os
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import smtplib
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import asyncio
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import logging
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from email.mime.text import MIMEText
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from email.mime.multipart import MIMEMultipart
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import httpx
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logger = logging.getLogger(__name__)
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# Brevo REST-API
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BREVO_API_KEY = os.getenv("BREVO_API_KEY", "")
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BREVO_API_URL = "https://api.brevo.com/v3/smtp/email"
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# SMTP Fallback
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SMTP_HOST = os.getenv("SMTP_HOST", "")
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SMTP_PORT = int(os.getenv("SMTP_PORT", "587"))
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SMTP_USER = os.getenv("SMTP_USER", "")
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SMTP_PASS = os.getenv("SMTP_PASS", "")
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SMTP_FROM = os.getenv("SMTP_FROM", "Ban Yaro <noreply@banyaro.app>")
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APP_URL = os.getenv("APP_URL", "https://banyaro.app")
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# ------------------------------------------------------------------
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# Brevo REST-API
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# ------------------------------------------------------------------
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async def _send_brevo(to: str, subject: str, html: str, plain: str):
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# Absender-Name und -Adresse aus SMTP_FROM parsen
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# Format: "Ban Yaro <noreply@banyaro.app>" oder "noreply@banyaro.app"
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from_raw = SMTP_FROM
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if "<" in from_raw:
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from_name = from_raw[:from_raw.index("<")].strip()
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from_email = from_raw[from_raw.index("<")+1:from_raw.index(">")].strip()
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else:
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from_name = "Ban Yaro"
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from_email = from_raw.strip()
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payload = {
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"sender": {"name": from_name, "email": from_email},
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"to": [{"email": to}],
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"subject": subject,
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"htmlContent": html,
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"textContent": plain,
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}
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async with httpx.AsyncClient(timeout=15) as client:
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resp = await client.post(
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BREVO_API_URL,
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json=payload,
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headers={"api-key": BREVO_API_KEY, "Content-Type": "application/json"},
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)
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resp.raise_for_status()
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# ------------------------------------------------------------------
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# SMTP Fallback
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# ------------------------------------------------------------------
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def _send_smtp_sync(to: str, subject: str, html: str, plain: str):
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msg = MIMEMultipart("alternative")
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msg["Subject"] = subject
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msg["From"] = SMTP_FROM
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msg["To"] = to
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msg.attach(MIMEText(plain, "plain", "utf-8"))
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msg.attach(MIMEText(html, "html", "utf-8"))
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with smtplib.SMTP(SMTP_HOST, SMTP_PORT, timeout=10) as s:
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s.ehlo()
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s.starttls()
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if SMTP_USER:
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s.login(SMTP_USER, SMTP_PASS)
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s.sendmail(SMTP_FROM, [to], msg.as_string())
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# ------------------------------------------------------------------
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# Öffentliche Funktion
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# ------------------------------------------------------------------
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async def send_email(to: str, subject: str, html: str, plain: str = ""):
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if BREVO_API_KEY:
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try:
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await _send_brevo(to, subject, html, plain)
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logger.info(f"Mail via Brevo gesendet: «{subject}» → {to}")
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return
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except Exception as e:
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logger.error(f"Brevo-Fehler: {e}")
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raise
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if SMTP_HOST:
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loop = asyncio.get_event_loop()
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try:
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await loop.run_in_executor(None, _send_smtp_sync, to, subject, html, plain)
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logger.info(f"Mail via SMTP gesendet: «{subject}» → {to}")
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return
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except Exception as e:
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logger.error(f"SMTP-Fehler: {e}")
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raise
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logger.warning(f"Kein Mail-Backend konfiguriert — Mail NICHT gesendet: «{subject}» → {to}")
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async def send_verify_email(to: str, name: str, token: str):
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url = f"{APP_URL}/api/auth/verify/{token}"
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subject = "Ban Yaro — E-Mail-Adresse bestätigen"
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html = f"""\
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<!DOCTYPE html>
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<html lang="de">
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<head><meta charset="utf-8"></head>
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<body style="font-family:sans-serif;background:#f9f9f9;margin:0;padding:0">
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<div style="max-width:520px;margin:32px auto;background:#fff;border-radius:12px;
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padding:40px 32px;box-shadow:0 2px 8px rgba(0,0,0,.08)">
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<h1 style="color:#C4843A;margin:0 0 8px;font-size:24px">Ban Yaro 🐾</h1>
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<p style="color:#444;margin:0 0 24px">Hallo {name},</p>
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<p style="color:#444;margin:0 0 24px">
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bitte bestätige deine E-Mail-Adresse, damit dein Konto vollständig eingerichtet ist.
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</p>
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<p style="margin:0 0 32px">
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<a href="{url}"
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style="background:#C4843A;color:#fff;padding:14px 28px;border-radius:8px;
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text-decoration:none;font-weight:700;font-size:15px;display:inline-block">
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E-Mail bestätigen
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</a>
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</p>
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<p style="color:#888;font-size:13px;margin:0 0 8px">
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Der Link ist 48 Stunden gültig.
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</p>
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<p style="color:#bbb;font-size:12px;margin:0">
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Falls du dich nicht bei Ban Yaro registriert hast, ignoriere diese E-Mail einfach.
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</p>
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</div>
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</body>
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</html>"""
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plain = (
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f"Ban Yaro — E-Mail-Adresse bestätigen\n\n"
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f"Hallo {name},\n\n"
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f"bitte bestätige deine E-Mail-Adresse:\n{url}\n\n"
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f"Der Link ist 48 Stunden gültig.\n"
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)
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await send_email(to, subject, html, plain)
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