Add calendar export and advanced event filters

app/main.py

@@ -10,6 +10,7 @@ from io import BytesIO
 from urllib.parse import urlparse
 from contextlib import asynccontextmanager
 from datetime import datetime, timedelta
+from zoneinfo import ZoneInfo
 
 import bcrypt
 import httpx
@@ -21,7 +22,7 @@ except ImportError:
     Image = ImageOps = UnidentifiedImageError = None
 
 from fastapi import FastAPI, File, Form, Request, UploadFile
-from fastapi.responses import HTMLResponse, JSONResponse, RedirectResponse
+from fastapi.responses import HTMLResponse, JSONResponse, PlainTextResponse, RedirectResponse
 from fastapi.encoders import jsonable_encoder
 from fastapi.staticfiles import StaticFiles
 
@@ -825,7 +826,7 @@ def can_manage_event_access(user, concert) -> bool:
 
 
 def serialize_concert_card(row):
-    concert_id, artist, start_datetime, end_datetime, venue, city, event_type, parent_event_id, visibility, is_invited = row
+    concert_id, artist, start_datetime, end_datetime, venue, city, country, event_type, parent_event_id, visibility, is_invited = row
     venue_text = venue or "Veranstaltungsort unbekannt"
     if city:
         venue_text += f", {city}"
@@ -837,6 +838,8 @@ def serialize_concert_card(row):
         "time": start_datetime.strftime("%H:%M"),
         "end_date": end_datetime.strftime("%d.%m.%Y") if end_datetime else None,
         "venue": venue_text,
+        "city": city or "",
+        "country": country or "",
         "event_type": event_type,
         "event_type_label": EVENT_TYPES[event_type],
         "parent_event_id": parent_event_id,
@@ -870,10 +873,10 @@ def build_event_overview(rows):
     return upcoming, past
 
 
-def load_event_overview(user, search_query: str = ""):
+def load_event_overview(user, search_query: str = "", date_from: str = "", date_to: str = "", venue_filter: str = "", country_filter: str = "", category_filter: str = ""):
     query = """
         SELECT concerts.id, concerts.artist, concerts.start_datetime,
-               concerts.end_datetime, venues.name, venues.city,
+               concerts.end_datetime, venues.name, venues.city, venues.country,
                concerts.event_type, concerts.parent_event_id,
                concerts.visibility,
                EXISTS (SELECT 1 FROM event_invitations ei
@@ -905,12 +908,23 @@ def load_event_overview(user, search_query: str = ""):
             upcoming, past = build_event_overview(cursor.fetchall())
 
     term = search_query.strip().casefold()
-    if not term:
+    if not any((term, date_from.strip(), date_to.strip(), venue_filter.strip(), country_filter.strip(), category_filter.strip())):
         return upcoming, past
 
     def matches(card):
-        text = f"{card['artist']} {card['venue']} {card['event_type_label']}".casefold()
-        return term in text or any(matches(child) for child in card["children"])
+        text = f"{card['artist']} {card['venue']} {card['event_type_label']} {card['country']}".casefold()
+        own = (not term or term in text)
+        own = own and (not venue_filter or venue_filter.casefold() in card['venue'].casefold())
+        own = own and (not country_filter or country_filter.casefold() in card['country'].casefold())
+        own = own and (not category_filter or card['event_type'] == category_filter)
+        event_date = card['_start_datetime'].date().isoformat()
+        if date_from and date_to:
+            own = own and date_from <= event_date <= date_to
+        elif date_from:
+            own = own and event_date == date_from
+        elif date_to:
+            own = own and event_date == date_to
+        return own or any(matches(child) for child in card["children"])
 
     return (
         [card for card in upcoming if matches(card)],
@@ -2154,9 +2168,9 @@ def logout(request: Request):
 # ============================================================
 
 @app.get("/", response_class=HTMLResponse)
-def home(request: Request, q: str = ""):
+def home(request: Request, q: str = "", date_from: str = "", date_to: str = "", venue: str = "", country: str = "", category: str = ""):
     user = get_current_user(request)
-    upcoming_concerts, _past_concerts = load_event_overview(user, q)
+    upcoming_concerts, _past_concerts = load_event_overview(user, q, date_from, date_to, venue, country, category)
 
     template = templates.get_template("index.html")
     return template.render(
@@ -2166,13 +2180,14 @@ def home(request: Request, q: str = ""):
         archive=False,
         search_query=q.strip(),
         user_results=search_users(q),
+        filters={"date_from": date_from, "date_to": date_to, "venue": venue, "country": country, "category": category},
     )
 
 
 @app.get("/events/past", response_class=HTMLResponse)
-def past_events(request: Request, q: str = ""):
+def past_events(request: Request, q: str = "", date_from: str = "", date_to: str = "", venue: str = "", country: str = "", category: str = ""):
     user = get_current_user(request)
-    _upcoming_concerts, past_concerts = load_event_overview(user, q)
+    _upcoming_concerts, past_concerts = load_event_overview(user, q, date_from, date_to, venue, country, category)
     template = templates.get_template("index.html")
     return template.render(
         user=user,
@@ -2181,6 +2196,7 @@ def past_events(request: Request, q: str = ""):
         archive=True,
         search_query=q.strip(),
         user_results=search_users(q),
+        filters={"date_from": date_from, "date_to": date_to, "venue": venue, "country": country, "category": category},
     )
 
 
@@ -2451,6 +2467,23 @@ def export_profile_data(request: Request):
     )
 
 
+@app.post("/profile/delete")
+def delete_own_account(request: Request):
+    """Permanently remove the authenticated user's account and personal data."""
+    user = get_current_user(request)
+    if not user:
+        return login_redirect("/profile")
+    user_id = user["id"]
+    with get_db_connection() as connection:
+        with connection.cursor() as cursor:
+            cursor.execute("UPDATE registration_invites SET used_by = NULL WHERE used_by = %s", (user_id,))
+            cursor.execute("DELETE FROM users WHERE id = %s", (user_id,))
+        connection.commit()
+    response = RedirectResponse("/login", status_code=303)
+    response.delete_cookie(SESSION_COOKIE, path="/", secure=COOKIE_SECURE, samesite="lax")
+    return response
+
+
 @app.get("/users/{username}", response_class=HTMLResponse)
 def user_profile(request: Request, username: str):
     return render_profile(request, username)
@@ -2769,6 +2802,39 @@ def new_concert(request: Request):
 # Concert detail
 # ============================================================
 
+def _ics_escape(value: str) -> str:
+    return str(value or "").replace("\\", "\\\\").replace(";", "\\;").replace(",", "\\,").replace("\n", "\\n")
+
+
+@app.get("/concerts/{concert_id}.ics")
+def concert_ics(request: Request, concert_id: int):
+    concert = load_concert(concert_id)
+    if not concert:
+        return PlainTextResponse("Veranstaltung nicht gefunden", status_code=404)
+    # Kalenderdaten unterliegen denselben Sichtbarkeitsregeln wie die Detailseite.
+    # Ohne Sitzung bzw. ohne Berechtigung keine Informationen preisgeben.
+    user = get_current_user(request)
+    if not user or not can_view_event(user, concert):
+        return PlainTextResponse("Veranstaltung nicht gefunden", status_code=404)
+    local_zone = ZoneInfo("Europe/Berlin")
+    start = concert["start_datetime"].replace(tzinfo=local_zone)
+    end_value = concert.get("end_datetime")
+    end = end_value.replace(tzinfo=local_zone) if end_value else start + timedelta(hours=2)
+    if end <= start:
+        end = start + timedelta(hours=2)
+    venue = concert.get("venue", {}) or {}
+    location = ", ".join(filter(None, [venue.get("name"), venue.get("city"), venue.get("country")]))
+    stamp = datetime.now(ZoneInfo("UTC")).strftime("%Y%m%dT%H%M%SZ")
+    body = "\r\n".join([
+        "BEGIN:VCALENDAR", "VERSION:2.0", "PRODID:-//MetalCircle//Concerts//DE", "CALSCALE:GREGORIAN",
+        "BEGIN:VEVENT", f"UID:metalcircle-{concert_id}@konzerte.pinguholic.de", f"DTSTAMP:{stamp}",
+        f"DTSTART;TZID=Europe/Berlin:{start.strftime('%Y%m%dT%H%M%S')}",
+        f"DTEND;TZID=Europe/Berlin:{end.strftime('%Y%m%dT%H%M%S')}",
+        f"SUMMARY:{_ics_escape(concert['artist'])}", f"LOCATION:{_ics_escape(location)}",
+        f"URL:https://konzerte.pinguholic.de/concerts/{concert_id}", "END:VEVENT", "END:VCALENDAR", ""
+    ])
+    return PlainTextResponse(body, media_type="text/calendar; charset=utf-8", headers={"Content-Disposition": f'attachment; filename="metalcircle-{concert_id}.ics"'})
+
 @app.get(
     "/concerts/{concert_id}",
     response_class=HTMLResponse

app/static/css/style.css

@@ -494,7 +494,11 @@ h1, .page-title h1 {
 .comment-meta { display:flex; justify-content:space-between; gap:12px; color:var(--muted); font-size:.9rem; }
 .comment-meta strong { color:var(--text); }
 .comment p { margin:10px 0 0; white-space:pre-wrap; overflow-wrap:anywhere; }
+.search-form select { margin:0; padding:10px 12px; color:var(--text); background:#101010; border:1px solid var(--border); border-radius:9px; font:inherit; }
+.clear-filters { grid-column:1 / -1; display:inline-flex; align-items:center; justify-content:center; padding:8px 12px; color:#fca5a5; border:1px solid var(--border); border-radius:9px; background:#171212; white-space:nowrap; }
+.clear-filters:hover { border-color:#ef4444; color:#fff; }
 .ticket-button-container, .detail-actions { display:flex; flex-wrap:wrap; justify-content:center; gap:10px; margin-top:22px; }
+.calendar-export { display:flex; justify-content:center; margin-top:12px; }
 .ticket-button, .concert-action { display:inline-flex; padding:11px 16px; border:1px solid #b91c1c; border-radius:9px; background:#7f1d1d; color:#fff; font-weight:700; }
 .concert-action-delete { background:#450a0a; cursor:pointer; }
 @media (max-width:600px) { .detail-topbar { align-items:flex-start; } .concert-detail { padding:16px; } .comment-meta { flex-direction:column; gap:4px; } }

app/templates/concert_detail.html

@@ -212,6 +212,8 @@
 
             {% endif %}
 
+            <div class="calendar-export"><a href="/concerts/{{ concert.id }}.ics" class="concert-action">📅 In Kalender speichern (.ics)</a></div>
+
             {% if can_edit %}
 
                 <div class="detail-actions" aria-label="Veranstaltung verwalten">

app/templates/index.html

@@ -156,7 +156,7 @@
         }
 
         .search-panel { margin-bottom: 26px; padding: 16px; background: rgba(16,16,16,.92); border: 1px solid #3a3030; border-radius: 14px; }
-        .search-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }
+        .search-form { display: grid; grid-template-columns: minmax(180px, 2fr) repeat(4, minmax(120px, 1fr)) auto; gap: 10px; }
         .search-form input { margin: 0; }
         .search-results-title { margin: 24px 0 12px; font-size: 1.15rem; }
         .user-results { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; margin-bottom: 24px; }
@@ -265,7 +265,13 @@
     <section class="search-panel" aria-label="Suche">
         <form class="search-form" method="get" action="{% if archive %}/events/past{% else %}/{% endif %}">
             <input type="search" name="q" value="{{ search_query }}" placeholder="Veranstaltungen, Orte oder User suchen …" aria-label="Veranstaltungen oder User suchen">
+            <input type="date" name="date_from" value="{{ filters.date_from }}" aria-label="Von Datum">
+            <input type="date" name="date_to" value="{{ filters.date_to }}" aria-label="Bis Datum">
+            <input type="search" name="venue" value="{{ filters.venue }}" placeholder="Ort / Location">
+            <input type="search" name="country" value="{{ filters.country }}" placeholder="Land">
+            <select name="category" aria-label="Kategorie"><option value="">Alle Kategorien</option><option value="concert" {% if filters.category == 'concert' %}selected{% endif %}>Konzert</option><option value="festival" {% if filters.category == 'festival' %}selected{% endif %}>Festival</option><option value="other" {% if filters.category == 'other' %}selected{% endif %}>Sonstiges</option></select>
             <button class="new-concert-button" type="submit">Suchen</button>
+            {% if filters.date_from or filters.date_to or filters.venue or filters.country or filters.category %}<a class="clear-filters" href="{% if archive %}/events/past{% else %}/{% endif %}{% if search_query %}?q={{ search_query|urlencode }}{% endif %}">Filter löschen</a>{% endif %}
         </form>
     </section>
 

app/templates/profile.html

@@ -188,6 +188,13 @@
                 <button class="button" type="submit">Profil speichern</button>
             </form>
             <p class="data-export"><a href="/profile/export">Meine gespeicherten Daten exportieren (JSON)</a></p>
+            <details class="account-delete">
+                <summary>Account löschen</summary>
+                <p>Diese Aktion löscht dein Konto dauerhaft und kann nicht rückgängig gemacht werden.</p>
+                <form method="post" action="/profile/delete" onsubmit="return confirm('Account wirklich dauerhaft löschen?');">
+                    <button type="submit" class="admin-danger">Account dauerhaft löschen</button>
+                </form>
+            </details>
         </section>
     {% endif %}
 </main>