mirror of
https://github.com/skoelle/calender_sync.git
synced 2026-09-17 18:20:24 +00:00
mailer weekly notifier
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@@ -61,6 +61,13 @@ NOTIFY_EMAIL = os.environ.get("NOTIFY_EMAIL", "")
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NOTIFY_TIME = int(os.environ.get("NOTIFY_TIME", "6"))
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NOTIFY_TIMEZONE = os.environ.get("NOTIFY_TIMEZONE", "Europe/Berlin")
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WEEKLY_NOTIFY_ENABLED = os.environ.get("WEEKLY_NOTIFY_ENABLED", "false").lower() == "true"
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WEEKLY_NOTIFY_DAY = int(os.environ.get("WEEKLY_NOTIFY_DAY", "5"))
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WEEKLY_NOTIFY_TIME = int(os.environ.get("WEEKLY_NOTIFY_TIME", "16"))
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WEEKLY_NOTIFY_TIMEZONE = os.environ.get("WEEKLY_NOTIFY_TIMEZONE", "Europe/Berlin")
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WEEKLY_NOTIFY_EMAIL = os.environ.get("WEEKLY_NOTIFY_EMAIL", "")
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WEEKLY_SEARCHWORDS = os.environ.get("WEEKLY_SEARCHWORDS", "")
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def bootstrap_database():
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"""Legt DB_NAME und DB_USER an, falls sie noch nicht existieren.
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@@ -131,6 +138,15 @@ def ensure_schema(conn):
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UNIQUE KEY uk_date (notify_date)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
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""")
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cur.execute("""
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CREATE TABLE IF NOT EXISTS weekly_notification_log (
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id INT AUTO_INCREMENT PRIMARY KEY,
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notify_date DATE NOT NULL,
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sent_at DATETIME NOT NULL,
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event_count INT NOT NULL,
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UNIQUE KEY uk_date (notify_date)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
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""")
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conn.commit()
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cur.close()
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@@ -414,6 +430,179 @@ def check_and_send_notification():
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conn.close()
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def parse_weekly_searchwords():
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if not WEEKLY_SEARCHWORDS:
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return []
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return [w.strip() for w in WEEKLY_SEARCHWORDS.split(",") if w.strip()]
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def get_weekly_events(conn, calendar_label, searchwords):
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tz = ZoneInfo(WEEKLY_NOTIFY_TIMEZONE)
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now = datetime.now(tz)
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today = now.replace(hour=0, minute=0, second=0, microsecond=0)
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days_until_saturday = (5 - today.weekday()) % 7
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if days_until_saturday == 0:
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days_until_saturday = 7
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week_start = today + timedelta(days=days_until_saturday)
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week_end = week_start + timedelta(days=6, hours=23, minutes=59, seconds=59)
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week_start_naive = week_start.replace(tzinfo=None)
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week_end_naive = week_end.replace(tzinfo=None)
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search_clauses = []
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search_params = []
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for word in searchwords:
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like = f"%{word}%"
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search_clauses.append("(summary LIKE %s OR description LIKE %s OR location LIKE %s)")
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search_params.extend([like, like, like])
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where_search = " OR ".join(search_clauses) if search_clauses else "1=1"
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cur = conn.cursor(dictionary=True)
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cur.execute(
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f"""
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SELECT summary, start_at, end_at, location
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FROM calendar_events
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WHERE calendar_label = %s
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AND deleted = 0
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AND all_day = 0
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AND start_at >= %s
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AND start_at <= %s
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AND ({where_search})
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ORDER BY start_at ASC
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""",
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(calendar_label, week_start_naive, week_end_naive, *search_params),
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)
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events = cur.fetchall()
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cur.close()
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return events, week_start, week_end
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def should_send_weekly(conn):
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if not WEEKLY_NOTIFY_ENABLED:
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return False
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if not parse_weekly_searchwords():
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return False
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tz = ZoneInfo(WEEKLY_NOTIFY_TIMEZONE)
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now = datetime.now(tz)
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if now.weekday() != WEEKLY_NOTIFY_DAY or now.hour != WEEKLY_NOTIFY_TIME:
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return False
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cur = conn.cursor()
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cur.execute(
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"SELECT COUNT(*) FROM weekly_notification_log WHERE notify_date = CURDATE()"
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)
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count = cur.fetchone()[0]
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cur.close()
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return count == 0
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def log_weekly_notification(conn, event_count):
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cur = conn.cursor()
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cur.execute(
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"INSERT INTO weekly_notification_log (notify_date, sent_at, event_count) VALUES (CURDATE(), NOW(), %s)",
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(event_count,),
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)
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conn.commit()
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cur.close()
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def send_weekly_notification(events, searchwords, week_start, week_end):
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email = WEEKLY_NOTIFY_EMAIL or NOTIFY_EMAIL
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if not SMTP_HOST or not email:
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log.warning("SMTP-Konfiguration unvollstaendig, ueberspringe Wochenbenachrichtigung")
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return
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tz = ZoneInfo(WEEKLY_NOTIFY_TIMEZONE)
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count = len(events)
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start_str = week_start.strftime("%a, %d.%m.")
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end_str = week_end.strftime("%a, %d.%m.")
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if count == 1:
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event = events[0]
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event_date = event["start_at"].replace(tzinfo=timezone.utc).astimezone(tz).strftime("%a, %d.%m.")
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subject = f"Vorab-Info: Termin am {event_date}"
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else:
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subject = f"Vorab-Info: {count} Termine naechste Woche"
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event_rows = ""
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for event in events:
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time_str = format_event_time(event["start_at"], event.get("end_at"))
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event_date = event["start_at"].replace(tzinfo=timezone.utc).astimezone(tz).strftime("%a, %d.%m.")
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summary = event["summary"]
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location = f" ({event['location']})" if event.get("location") else ""
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event_rows += f"""
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<tr>
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<td style="padding: 8px 12px; border-bottom: 1px solid #eee; font-weight: bold; white-space: nowrap;">{event_date}</td>
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<td style="padding: 8px 12px; border-bottom: 1px solid #eee; white-space: nowrap;">{time_str}</td>
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<td style="padding: 8px 12px; border-bottom: 1px solid #eee;">{summary}{location}</td>
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</tr>"""
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words_display = ", ".join(searchwords)
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html = f"""
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<!DOCTYPE html>
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<html>
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<head><meta charset="utf-8"></head>
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<body style="font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; max-width: 600px; margin: 0 auto; padding: 20px;">
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<h2 style="color: #333;">Vorab-Info: Naechste Woche</h2>
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<p style="color: #555;">Vom <strong>{start_str}</strong> bis <strong>{end_str}</strong> stehen folgende Termine an:</p>
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<table style="width: 100%; border-collapse: collapse; margin: 20px 0; background: #f9f9f9; border-radius: 8px; overflow: hidden;">
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{event_rows}
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</table>
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<p style="color: #888; font-size: 12px;">Suchbegriffe: {words_display}</p>
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</body>
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</html>
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"""
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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"] = email
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msg.attach(MIMEText(html, "html", "utf-8"))
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try:
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if SMTP_USE_TLS:
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server = smtplib.SMTP(SMTP_HOST, SMTP_PORT)
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server.starttls()
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else:
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server = smtplib.SMTP_SSL(SMTP_HOST, SMTP_PORT)
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if SMTP_USER and SMTP_PASSWORD:
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server.login(SMTP_USER, SMTP_PASSWORD)
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server.sendmail(SMTP_FROM, [email], msg.as_string())
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server.quit()
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log.info("Wochenbenachrichtigung gesendet: %s", subject)
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except Exception:
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log.exception("Fehler beim Senden der Wochenbenachrichtigung")
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def check_and_send_weekly_notification():
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if not SMTP_HOST or not (WEEKLY_NOTIFY_EMAIL or NOTIFY_EMAIL):
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return
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conn = get_connection(autocommit=True)
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try:
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if should_send_weekly(conn):
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searchwords = parse_weekly_searchwords()
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events, week_start, week_end = get_weekly_events(conn, CALENDAR_LABEL, searchwords)
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if events:
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send_weekly_notification(events, searchwords, week_start, week_end)
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log_weekly_notification(conn, len(events))
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log.info("Wochenbenachrichtigung fuer %d Events gesendet", len(events))
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else:
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log.info("Keine passenden Termine naechste Woche, Wochenbenachrichtigung wird uebersprungen")
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except Exception:
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log.exception("Fehler bei der Wochenbenachrichtigung")
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finally:
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conn.close()
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def main():
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bootstrap_database()
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log.info(
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@@ -425,6 +614,7 @@ def main():
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try:
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run_sync_once()
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check_and_send_notification()
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check_and_send_weekly_notification()
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except Exception:
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log.exception("Sync-Durchlauf fehlgeschlagen, versuche es beim naechsten Intervall erneut")
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time.sleep(SYNC_INTERVAL_MINUTES * 60)
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