mirror of
https://github.com/skoelle/calender_sync.git
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fix: display local timezone in API and web frontend instead of GMT
- Add TIMEZONE environment variable support (default: UTC) - Convert naive UTC datetimes from database to local timezone in API responses - Add timezone field to EventResponse and EventsListResponse Pydantic models - Update web template to display timezone information - Update PLAN.md to document timezone changes This fixes the issue where events at 8:00 UTC would appear as 6:00 GMT by displaying times in the correct local timezone.
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@@ -128,6 +128,25 @@ jinja2==3.1.4
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## Offene Punkte
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- [x] Zeitzonen-Korrektur in API und Web-UI (statt GMT → lokaler Zeitzone)
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- [x] Notwendigkeit eines timezone-Feldes in der DB für korrekte Speicherung
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- [x] Zeitstempel-Speicherung mit korrekter Zeitzone-Feldunterstützung in DB
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- [x] DB Bootstrap - bleibt in sync.py
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- [x] Template Styling - einfaches CSS, kein Framework
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- [x] Search - optionaler Suchbegriff auf Event-Titel (API + Frontend)
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## Richtig gelöst: Keine DB-Zeitzone-Speicherung nötig
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Da MySQL/MariaDB naive DATETIME-Werte speichert (ohne Zeitzone), muss die Zeitzone-Zuweisung auf der API/Web-UI-Seite erfolgen. Dies ist korrekt, da:
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1. **Datenbank-Speicherung**: MariaDB DATETIME-Spalten können naive Datetimes speichern (alle in einem Standard)
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2. **Zeitzone-Wiederherstellung**: Die API/Frontend-Komponenten können naive Datetimes in die korrekte Benutzer-Zeitzone konvertieren, wenn sie benötigt werden
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3. **Vereinfachte Architektur**: Keine komplexe DB-Schema-Änderung erforderlich
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**Lösung**: Konvertieren Sie naive UTC-Daten aus DB → lokale Zeitzone im API/Web-UI durch Hinzufügen von `timezone`-Feld in Response-Modell.
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**Änderungen**:
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- Fügen Sie ein `timezone`-Feld zu `EventResponse` und `EventsListResponse` hinzu
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- Konvertieren Sie Datetimes in API: `datetime.now(timezone.utc)` → `to_local_timezone()`
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- Passen Sie `row_to_event` an: Konvertieren Sie naive UTC → Benutzer-Zeitzone
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- Aktualisieren Sie das Template: Verwenden Sie den Zeitzonennamen für Formatierung
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+33
-4
@@ -1,6 +1,8 @@
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import logging
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import os
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from datetime import datetime, timezone
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from pathlib import Path
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from zoneinfo import ZoneInfo
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from fastapi import FastAPI, HTTPException, Query
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from fastapi.responses import HTMLResponse
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@@ -17,6 +19,29 @@ templates = Jinja2Templates(directory=Path(__file__).parent / "templates")
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SELECT_COLUMNS = "id, summary, description, location, start_at, end_at, all_day, status"
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# Get timezone from environment, default to UTC
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TIMEZONE_NAME = os.environ.get("TIMEZONE", "UTC")
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try:
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TIMEZONE = ZoneInfo(TIMEZONE_NAME)
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except Exception:
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log.warning(f"Invalid TIMEZONE '{TIMEZONE_NAME}', falling back to UTC")
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TIMEZONE = ZoneInfo("UTC")
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def to_local_timezone(dt: datetime) -> datetime:
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"""Konvertiere naive UTC datetime zu Benutzer-Zeitzone."""
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if dt is None:
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return None
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return dt.replace(tzinfo=timezone.utc).astimezone(TIMEZONE)
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def to_iso_local(dt: datetime) -> str:
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"""Konvertiere naive UTC datetime zu ISO-String in lokaler Zeitzone."""
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if dt is None:
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return None
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local_dt = to_local_timezone(dt)
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return local_dt.isoformat()
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class EventResponse(BaseModel):
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id: int
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@@ -25,6 +50,7 @@ class EventResponse(BaseModel):
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location: str | None
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start_at: str
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end_at: str | None
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timezone: str
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all_day: bool
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status: str
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@@ -33,6 +59,7 @@ class EventsListResponse(BaseModel):
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events: list[EventResponse]
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count: int
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query_time: str
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timezone: str
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def row_to_event(row) -> EventResponse:
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@@ -41,8 +68,9 @@ def row_to_event(row) -> EventResponse:
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summary=row[1],
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description=row[2],
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location=row[3],
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start_at=row[4].isoformat() if row[4] else None,
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end_at=row[5].isoformat() if row[5] else None,
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start_at=to_iso_local(row[4]) if row[4] else None,
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end_at=to_iso_local(row[5]) if row[5] else None,
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timezone=TIMEZONE_NAME,
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all_day=bool(row[6]),
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status=row[7],
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)
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@@ -143,8 +171,9 @@ def index(
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"summary": row[1],
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"description": row[2],
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"location": row[3],
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"start_at": row[4],
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"end_at": row[5],
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"start_at": to_iso_local(row[4]) if row[4] else None,
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"end_at": to_iso_local(row[5]) if row[5] else None,
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"timezone": TIMEZONE_NAME,
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"all_day": bool(row[6]),
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"status": row[7],
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})
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@@ -116,7 +116,7 @@
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}
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.event-location::before {
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content: "\1F4CD ";
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content: "\\1F4CD ";
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}
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.badge {
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@@ -181,11 +181,11 @@
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<div>
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<div class="event-date">
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{% if event.all_day %}
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{{ event.start_at.strftime('%d.%m.%Y') }} <span class="all-day">Ganztägig</span>
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{{ event.start_at.split('T')[0] }} <span class="all-day">Ganztägig</span>
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{% elif event.end_at %}
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{{ event.start_at.strftime('%d.%m.%Y %H:%M') }} - {{ event.end_at.strftime('%H:%M') }}
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{{ event.start_at.split('T')[0] }} {{ event.start_at.split('T')[1][:5] }} - {{ event.end_at.split('T')[1][:5] }} {{ event.timezone }}
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{% else %}
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{{ event.start_at.strftime('%d.%m.%Y %H:%M') }}
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{{ event.start_at.split('T')[0] }} {{ event.start_at.split('T')[1][:5] }} {{ event.timezone }}
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{% endif %}
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</div>
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<div class="event-summary">{{ event.summary or '(Kein Titel)' }}</div>
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