initial commit

app/services/smtp_sender.py

@@ -0,0 +1,89 @@
+import smtplib
+from datetime import datetime
+from email.mime.text import MIMEText
+from typing import Sequence
+
+from sqlalchemy.orm import Session
+
+from app.models.system import SendLog
+from app.services.config_store import get_config
+
+
+def get_smtp_settings(db: Session) -> dict[str, str]:
+    return {
+        "enabled": get_config(db, "smtp.enabled", "false"),
+        "host": get_config(db, "smtp.host", ""),
+        "port": get_config(db, "smtp.port", "587"),
+        "username": get_config(db, "smtp.username", ""),
+        "password": get_config(db, "smtp.password", ""),
+        "from_email": get_config(db, "smtp.from_email", ""),
+        "use_tls": get_config(db, "smtp.use_tls", "true"),
+        "recipients": get_config(db, "smtp.recipients", ""),
+        "schedule_time": get_config(db, "smtp.schedule_time", "08:00"),
+        "last_scheduled_date": get_config(db, "smtp.last_scheduled_date", ""),
+    }
+
+
+def send_newsletter(
+    db: Session,
+    subject: str,
+    html_content: str,
+    text_content: str,
+    recipients: Sequence[str],
+    scheduled: bool = False,
+) -> None:
+    settings = get_smtp_settings(db)
+    if settings["enabled"].lower() != "true":
+        _log(db, subject, recipients, "skipped", "SMTP ist deaktiviert.", scheduled)
+        return
+    if not settings["host"] or not settings["from_email"] or not recipients:
+        _log(db, subject, recipients, "failed", "SMTP unvollständig konfiguriert.", scheduled)
+        return
+
+    msg = MIMEText(html_content, "html", "utf-8")
+    msg["Subject"] = subject
+    msg["From"] = settings["from_email"]
+    msg["To"] = ", ".join(recipients)
+
+    try:
+        port = int(settings["port"])
+        with smtplib.SMTP(settings["host"], port, timeout=20) as server:
+            if settings["use_tls"].lower() == "true":
+                server.starttls()
+            if settings["username"]:
+                server.login(settings["username"], settings["password"])
+            server.sendmail(settings["from_email"], list(recipients), msg.as_string())
+        _log(db, subject, recipients, "sent", "Versand erfolgreich.", scheduled)
+    except Exception as exc:
+        _log(db, subject, recipients, "failed", f"Versandfehler: {exc}", scheduled)
+
+
+def run_scheduled_send_if_due(db: Session, subject: str, html_content: str, text_content: str) -> None:
+    settings = get_smtp_settings(db)
+    if settings["enabled"].lower() != "true":
+        return
+    now = datetime.now()
+    schedule_time = settings["schedule_time"] or "08:00"
+    if now.strftime("%H:%M") < schedule_time:
+        return
+    today = now.strftime("%Y-%m-%d")
+    if settings["last_scheduled_date"] == today:
+        return
+    recipients = [r.strip() for r in settings["recipients"].split(",") if r.strip()]
+    send_newsletter(db, subject, html_content, text_content, recipients, scheduled=True)
+    from app.services.config_store import set_config
+
+    set_config(db, "smtp.last_scheduled_date", today)
+
+
+def _log(db: Session, subject: str, recipients: Sequence[str], status: str, detail: str, scheduled: bool) -> None:
+    db.add(
+        SendLog(
+            subject=subject,
+            recipients=", ".join(recipients) if recipients else "-",
+            status=status,
+            detail=detail,
+            scheduled=scheduled,
+        )
+    )
+    db.commit()