feat: Import/Export fuer Kontakte und Kalender + Bulk-Loeschen Kontakte
Kontakte: - Mehrfachauswahl in der Liste (Checkbox-Spalte) mit Bulk-Loeschen - Export als Sammel-vCard (.vcf), als ZIP mit Einzel-vCards oder als CSV - Import aus vCard (mehrere im File moeglich) oder CSV; Match per UID, bestehende Kontakte werden aktualisiert Kalender: - Export als iCalendar (.ics) oder CSV - Import aus .ics oder CSV; bestehende Termine via UID aktualisiert Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Stefan Hacker
@@ -1,3 +1,6 @@
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import csv
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import io
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import re
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import secrets
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import uuid
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from datetime import datetime, timezone
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@@ -236,6 +239,158 @@ def list_events(cal_id):
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return jsonify([_redact_if_private(e.to_dict(), is_owner) for e in events]), 200
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@api_bp.route('/calendars/<int:cal_id>/export', methods=['GET'])
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@token_required
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def export_calendar(cal_id):
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"""Export VEVENTs als .ics oder .csv."""
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user = request.current_user
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cal, err = _get_calendar_or_err(cal_id, user)
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if err:
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return err
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fmt = (request.args.get('format') or 'ics').lower()
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events = CalendarEvent.query.filter_by(calendar_id=cal_id).order_by(CalendarEvent.dtstart).all()
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safe_name = re.sub(r'[^A-Za-z0-9._-]+', '_', cal.name or 'kalender') or 'kalender'
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if fmt == 'ics':
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lines = ['BEGIN:VCALENDAR', 'VERSION:2.0', 'PRODID:-//Mini-Cloud//DE', 'CALSCALE:GREGORIAN']
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for e in events:
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block = (e.ical_data or '').strip()
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if not block:
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block = _build_vevent(e.uid, e.summary or '', e.dtstart, e.dtend,
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e.all_day, e.description or '', e.location or '',
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e.recurrence_rule or '',
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(e.exdates or '').split(',') if e.exdates else None)
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# Make sure block contains BEGIN/END VEVENT
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if 'BEGIN:VEVENT' not in block.upper():
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continue
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lines.append(block.strip())
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lines.append('END:VCALENDAR')
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body = '\r\n'.join(lines) + '\r\n'
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return Response(
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body, mimetype='text/calendar; charset=utf-8',
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headers={'Content-Disposition': f'attachment; filename="{safe_name}.ics"'},
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)
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if fmt == 'csv':
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out = io.StringIO()
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cols = ['summary', 'dtstart', 'dtend', 'all_day', 'location',
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'description', 'recurrence_rule', 'uid']
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w = csv.writer(out, delimiter=';', quoting=csv.QUOTE_ALL)
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w.writerow(cols)
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for e in events:
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w.writerow([
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e.summary or '',
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e.dtstart.isoformat() if e.dtstart else '',
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e.dtend.isoformat() if e.dtend else '',
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'1' if e.all_day else '0',
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e.location or '',
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(e.description or '').replace('\r\n', ' ').replace('\n', ' '),
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e.recurrence_rule or '',
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e.uid or '',
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])
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return Response(
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'\ufeff' + out.getvalue(), mimetype='text/csv; charset=utf-8',
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headers={'Content-Disposition': f'attachment; filename="{safe_name}.csv"'},
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)
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return jsonify({'error': 'Unbekanntes Format'}), 400
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@api_bp.route('/calendars/<int:cal_id>/import', methods=['POST'])
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@token_required
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def import_calendar(cal_id):
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"""Import .ics oder .csv -> Termine ins Kalender."""
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from app.dav.caldav import _parse_vevent, _extract_vevent_block
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user = request.current_user
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cal, err = _get_calendar_or_err(cal_id, user, need_write=True)
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if err:
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return err
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file = request.files.get('file')
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if not file:
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return jsonify({'error': 'Keine Datei'}), 400
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raw = file.read()
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name = (file.filename or '').lower()
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try:
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text = raw.decode('utf-8-sig')
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except UnicodeDecodeError:
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text = raw.decode('latin-1', errors='replace')
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imported = 0
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skipped = 0
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def _save(parsed: dict, ical_block: str | None = None):
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nonlocal imported, skipped
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if not parsed.get('summary') or not parsed.get('dtstart'):
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skipped += 1
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return
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uid = parsed.get('uid') or str(uuid.uuid4())
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existing = CalendarEvent.query.filter_by(calendar_id=cal_id, uid=uid).first()
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ev = existing or CalendarEvent(calendar_id=cal_id, uid=uid, ical_data='')
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ev.summary = parsed.get('summary') or '(ohne Titel)'
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ev.description = parsed.get('description')
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ev.location = parsed.get('location')
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ev.dtstart = parsed.get('dtstart')
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ev.dtend = parsed.get('dtend')
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ev.all_day = parsed.get('all_day', False)
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ev.recurrence_rule = parsed.get('rrule')
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ev.exdates = ','.join(parsed.get('exdates', [])) or None
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ev.ical_data = (ical_block or '').strip() or _build_vevent(
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uid, ev.summary, ev.dtstart, ev.dtend, ev.all_day,
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ev.description or '', ev.location or '', ev.recurrence_rule or '',
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(ev.exdates or '').split(',') if ev.exdates else None,
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)
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ev.updated_at = datetime.now(timezone.utc)
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if not existing:
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db.session.add(ev)
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imported += 1
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if name.endswith('.csv') or (b';' in raw[:200] and b'BEGIN:VCALENDAR' not in raw[:200]):
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reader = csv.DictReader(io.StringIO(text), delimiter=';')
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if not reader.fieldnames or len(reader.fieldnames) < 2:
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reader = csv.DictReader(io.StringIO(text), delimiter=',')
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for row in reader:
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row = {k.strip().lower(): (v or '').strip() for k, v in row.items() if k}
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try:
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dtstart = datetime.fromisoformat(row.get('dtstart') or row.get('start') or '')
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except (ValueError, TypeError):
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skipped += 1
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continue
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try:
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dtend = datetime.fromisoformat(row.get('dtend') or row.get('end') or '') if (row.get('dtend') or row.get('end')) else None
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except ValueError:
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dtend = None
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parsed = {
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'uid': row.get('uid'),
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'summary': row.get('summary') or row.get('titel') or row.get('title'),
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'description': row.get('description') or row.get('beschreibung'),
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'location': row.get('location') or row.get('ort'),
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'dtstart': dtstart,
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'dtend': dtend,
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'all_day': (row.get('all_day') or '').lower() in ('1', 'true', 'ja', 'yes'),
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'rrule': row.get('recurrence_rule') or row.get('rrule'),
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'exdates': [],
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}
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_save(parsed)
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else:
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# iCal: Kalender-Datei mit beliebig vielen VEVENTs
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blocks = re.findall(r'BEGIN:VEVENT.*?END:VEVENT', text, flags=re.DOTALL | re.IGNORECASE)
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if not blocks:
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return jsonify({'error': 'Keine VEVENT-Daten gefunden'}), 400
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for block in blocks:
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try:
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parsed = _parse_vevent(block)
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except Exception:
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parsed = None
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if not parsed:
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skipped += 1
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continue
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_save(parsed, ical_block=block)
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db.session.commit()
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if imported:
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notify_calendar_change(cal.owner_id, cal.id, 'event',
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shared_with=_calendar_recipients(cal))
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return jsonify({'imported': imported, 'skipped': skipped}), 200
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@api_bp.route('/calendars/<int:cal_id>/events', methods=['POST'])
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@token_required
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def create_event(cal_id):
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