# -*- coding: utf-8 -*-
"""
Datenmodelle fuer das Calendar-Plugin.

Definiert CalendarEvent, CalendarInfo, NotificationRecord und EventStatus.
"""

from dataclasses import dataclass, field
from datetime import datetime
from enum import Enum


class EventStatus(Enum):
    """Status eines Kalender-Events."""
    CONFIRMED = "confirmed"
    TENTATIVE = "tentative"
    CANCELLED = "cancelled"


@dataclass
class CalendarEvent:
    """
    Ein Kalender-Termin.

    Attributes:
        event_id: Eindeutige ID vom Provider
        calendar_id: Zugehoeriger Kalender-Key
        provider_name: Provider-Schluessel (outlook_firma, google_firma, etc.)
        title: Titel des Termins
        start: Startzeitpunkt
        end: Endzeitpunkt
        all_day: Ganztaegiger Termin
        location: Ort
        description: Beschreibung
        attendees: Teilnehmer (Namen/Emails)
        organizer: Organisator
        status: Terminstatus
        reminder_minutes: Erinnerung in Minuten vor Start
        raw_data: Original-Daten vom Provider
    """
    event_id: str
    calendar_id: str
    provider_name: str
    title: str
    start: datetime
    end: datetime
    all_day: bool = False
    location: str = ""
    description: str = ""
    attendees: list[str] = field(default_factory=list)
    organizer: str = ""
    status: EventStatus = EventStatus.CONFIRMED
    reminder_minutes: int = 15
    raw_data: dict = field(default_factory=dict)

    @property
    def duration(self) -> int:
        """Dauer in Minuten."""
        delta = self.end - self.start
        return int(delta.total_seconds() / 60)

    @property
    def is_upcoming(self) -> bool:
        """Liegt der Termin in der Zukunft?"""
        return self.start > datetime.now()

    @property
    def is_ongoing(self) -> bool:
        """Findet der Termin gerade statt?"""
        now = datetime.now()
        return self.start <= now <= self.end


@dataclass
class CalendarInfo:
    """
    Informationen ueber einen einzelnen Kalender.

    Attributes:
        calendar_id: ID beim Provider
        provider_name: Provider-Schluessel aus Config
        display_name: Anzeigename
        readonly: Nur lesbar
        is_global: Gilt fuer alle Satellites
    """
    calendar_id: str
    provider_name: str
    display_name: str
    readonly: bool = True
    is_global: bool = False


@dataclass
class NotificationRecord:
    """
    Aufzeichnung einer gesendeten Benachrichtigung.

    Attributes:
        event_id: Event-ID
        notification_type: "reminder" oder "start"
        sent_at: Zeitpunkt der Benachrichtigung
        satellite_ids: Betroffene Satellites
    """
    event_id: str
    notification_type: str
    sent_at: datetime
    satellite_ids: list[str] = field(default_factory=list)