# -*- coding: utf-8 -*-
"""
AdminCommands Plugin.

Stellt 27 Admin-Only Intents bereit fuer System-Info, Satellite-Verwaltung,
Plugin-Status, Training-Steuerung und History/Log-Abfragen.

Alle Intents erfordern das System-Command Wakeword.
Patterns und Examples sind in intents_de.yml definiert (multilingual).
"""

from __future__ import annotations

import asyncio
import logging
import os
import socket
import time
from datetime import datetime, timezone
from pathlib import Path
from typing import TYPE_CHECKING, Any

from trixy_core.plugins.trixy_plugin import TrixyPlugin
from trixy_core.nlp.decorators import intent, admin_only
from trixy_core.nlp.handler import IntentResult, IntentReceivedData
from trixy_core.utils.debug import pinfo, pdebug, perror, pwarn

if TYPE_CHECKING:
    from trixy_core.activity.tracker import ActivityTracker


# Audit-Logger fuer Admin-Befehle
_audit_logger: logging.Logger | None = None


def _get_audit_logger() -> logging.Logger:
    """Liefert den Audit-Logger (lazy init)."""
    global _audit_logger
    if _audit_logger is None:
        _audit_logger = logging.getLogger("admin_audit")
        _audit_logger.setLevel(logging.INFO)
        if not _audit_logger.handlers:
            log_dir = Path("logs")
            log_dir.mkdir(exist_ok=True)
            handler = logging.FileHandler(log_dir / "admin_audit.log", encoding="utf-8")
            handler.setFormatter(logging.Formatter(
                "%(asctime)s | %(message)s", datefmt="%Y-%m-%d %H:%M:%S"
            ))
            _audit_logger.addHandler(handler)
    return _audit_logger


def _audit(intent_name: str, satellite_id: str, room_id: str, detail: str = "") -> None:
    """Schreibt einen Audit-Eintrag."""
    logger = _get_audit_logger()
    msg = f"ADMIN | intent={intent_name} | satellite={satellite_id} | room={room_id}"
    if detail:
        msg += f" | {detail}"
    logger.info(msg)


class AdminCommandsPlugin(TrixyPlugin):
    """Admin-Befehle fuer System-Verwaltung per Sprache."""

    NAME = "admin_commands"
    VERSION = "1.0.0"
    DESCRIPTION = "Admin-Only Sprachbefehle fuer System, Satellites, Training und Logs"
    AUTHOR = "Trixy"

    def __init__(self, **kwargs) -> None:
        super().__init__(**kwargs)
        self._start_time: float = 0.0

    async def on_load(self) -> None:
        """Plugin geladen — Startzeit merken."""
        self._start_time = time.time()
        pinfo("[AdminCommands] Plugin geladen")

    async def on_unload(self) -> None:
        """Plugin entladen."""
        pdebug("[AdminCommands] Plugin entladen")

    def _get_tracker(self) -> "ActivityTracker | None":
        """Liefert den ActivityTracker Service."""
        try:
            return self.application.services.get_service("ActivityTracker")
        except Exception:
            return None

    # =========================================================================
    # System Info (1-6)
    # =========================================================================

    @intent("admin_hostname_query", description="Hostname abfragen")
    @admin_only
    async def handle_hostname_query(self, data: IntentReceivedData) -> IntentResult:
        """Gibt den Hostnamen zurueck."""
        _audit("admin_hostname_query", data.satellite_id, data.room_id)
        hostname = socket.gethostname()
        return IntentResult.success_with_response(f"Der Hostname ist {hostname}.")

    @intent("admin_domain_query", description="Domain abfragen")
    @admin_only
    async def handle_domain_query(self, data: IntentReceivedData) -> IntentResult:
        """Gibt den FQDN zurueck."""
        _audit("admin_domain_query", data.satellite_id, data.room_id)
        fqdn = socket.getfqdn()
        return IntentResult.success_with_response(f"Die Domain ist {fqdn}.")

    @intent("admin_ip_query", description="IP-Adresse abfragen")
    @admin_only
    async def handle_ip_query(self, data: IntentReceivedData) -> IntentResult:
        """Gibt die IP-Adresse zurueck."""
        _audit("admin_ip_query", data.satellite_id, data.room_id)
        ip = self._get_primary_ip()
        return IntentResult.success_with_response(f"Die IP-Adresse ist {ip}.")

    @intent("admin_uptime_query", description="Server-Laufzeit abfragen")
    @admin_only
    async def handle_uptime_query(self, data: IntentReceivedData) -> IntentResult:
        """Gibt die Server-Laufzeit zurueck."""
        _audit("admin_uptime_query", data.satellite_id, data.room_id)
        uptime_seconds = time.time() - self._start_time
        text = self._format_duration(uptime_seconds)
        return IntentResult.success_with_response(f"Der Server laeuft seit {text}.")

    @intent("admin_system_time_set", description="Systemuhrzeit setzen")
    @admin_only
    async def handle_system_time_set(self, data: IntentReceivedData, time_value: str = "") -> IntentResult:
        """Setzt die Systemuhrzeit."""
        _audit("admin_system_time_set", data.satellite_id, data.room_id, f"time={time_value}")
        if not time_value:
            return IntentResult.failure("Keine Uhrzeit angegeben.", "Bitte eine Uhrzeit angeben.")

        try:
            proc = await asyncio.create_subprocess_exec(
                "timedatectl", "set-time", time_value,
                stdout=asyncio.subprocess.PIPE,
                stderr=asyncio.subprocess.PIPE,
            )
            _, stderr = await proc.communicate()
            if proc.returncode != 0:
                err = stderr.decode().strip()
                return IntentResult.failure(err, f"Fehler beim Setzen der Uhrzeit: {err}")
            return IntentResult.success_with_response(f"Uhrzeit auf {time_value} gesetzt.")
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    @intent("admin_system_date_set", description="Systemdatum setzen")
    @admin_only
    async def handle_system_date_set(self, data: IntentReceivedData, date_value: str = "") -> IntentResult:
        """Setzt das Systemdatum."""
        _audit("admin_system_date_set", data.satellite_id, data.room_id, f"date={date_value}")
        if not date_value:
            return IntentResult.failure("Kein Datum angegeben.", "Bitte ein Datum angeben.")

        try:
            proc = await asyncio.create_subprocess_exec(
                "timedatectl", "set-time", date_value,
                stdout=asyncio.subprocess.PIPE,
                stderr=asyncio.subprocess.PIPE,
            )
            _, stderr = await proc.communicate()
            if proc.returncode != 0:
                err = stderr.decode().strip()
                return IntentResult.failure(err, f"Fehler beim Setzen des Datums: {err}")
            return IntentResult.success_with_response(f"Datum auf {date_value} gesetzt.")
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    # =========================================================================
    # Satellite Management (7-13)
    # =========================================================================

    @intent("admin_registration_enable", description="Registrierungsmodus aktivieren")
    @admin_only
    async def handle_registration_enable(self, data: IntentReceivedData) -> IntentResult:
        """Aktiviert den Registrierungsmodus."""
        _audit("admin_registration_enable", data.satellite_id, data.room_id)
        timeout = self.get_config_value("registration_timeout_seconds", 60)
        try:
            self.application.registration.enable_registration_mode(timeout)
            return IntentResult.success_with_response(
                f"Registrierungsmodus aktiviert fuer {timeout} Sekunden."
            )
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    @intent("admin_registration_disable", description="Registrierungsmodus deaktivieren")
    @admin_only
    async def handle_registration_disable(self, data: IntentReceivedData) -> IntentResult:
        """Deaktiviert den Registrierungsmodus."""
        _audit("admin_registration_disable", data.satellite_id, data.room_id)
        try:
            self.application.registration.disable_registration_mode()
            return IntentResult.success_with_response("Registrierungsmodus deaktiviert.")
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    @intent("admin_registration_status", description="Registrierungsmodus Status")
    @admin_only
    async def handle_registration_status(self, data: IntentReceivedData) -> IntentResult:
        """Gibt den Status des Registrierungsmodus zurueck."""
        _audit("admin_registration_status", data.satellite_id, data.room_id)
        try:
            active = self.application.registration.registration_mode
            if active:
                return IntentResult.success_with_response("Ja, der Registrierungsmodus ist aktiv.")
            return IntentResult.success_with_response("Nein, der Registrierungsmodus ist nicht aktiv.")
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    @intent("admin_satellite_count_registered", description="Anzahl registrierter Satellites")
    @admin_only
    async def handle_satellite_count_registered(self, data: IntentReceivedData) -> IntentResult:
        """Gibt die Anzahl registrierter Satellites zurueck."""
        _audit("admin_satellite_count_registered", data.satellite_id, data.room_id)
        try:
            count = self.application.satellites.count
            return IntentResult.success_with_response(
                f"Es {'ist' if count == 1 else 'sind'} {count} Satellite{'s' if count != 1 else ''} registriert."
            )
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    @intent("admin_satellite_count_connected", description="Anzahl verbundener Satellites")
    @admin_only
    async def handle_satellite_count_connected(self, data: IntentReceivedData) -> IntentResult:
        """Gibt die Anzahl verbundener Satellites zurueck."""
        _audit("admin_satellite_count_connected", data.satellite_id, data.room_id)
        try:
            count = self.application.satellites.connected_count
            return IntentResult.success_with_response(
                f"Es {'ist' if count == 1 else 'sind'} {count} Satellite{'s' if count != 1 else ''} verbunden."
            )
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    @intent("admin_satellite_last_connected", description="Letzte Verbindung eines Satellites")
    @admin_only
    async def handle_satellite_last_connected(self, data: IntentReceivedData, alias: str = "") -> IntentResult:
        """Gibt die letzte Verbindungszeit eines Satellites zurueck."""
        _audit("admin_satellite_last_connected", data.satellite_id, data.room_id, f"alias={alias}")
        if not alias:
            return IntentResult.failure("Kein Alias angegeben.", "Bitte einen Satellite-Namen angeben.")

        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        history = tracker.get_satellite_connection_history(alias)
        if not history:
            return IntentResult.success_with_response(f"Keine Verbindungshistorie fuer {alias} gefunden.")

        last = history[-1]
        connected_at = last.get("connected_at", "unbekannt")
        try:
            dt = datetime.fromisoformat(connected_at)
            formatted = dt.strftime("%d.%m.%Y um %H:%M Uhr")
        except (ValueError, TypeError):
            formatted = connected_at

        return IntentResult.success_with_response(f"{alias} war zuletzt am {formatted} verbunden.")

    @intent("admin_satellite_unregister", description="Satellite-Registrierung loeschen")
    @admin_only
    async def handle_satellite_unregister(self, data: IntentReceivedData, alias: str = "") -> IntentResult:
        """Loescht die Registrierung eines Satellites."""
        _audit("admin_satellite_unregister", data.satellite_id, data.room_id, f"alias={alias}")
        if not alias:
            return IntentResult.failure("Kein Alias angegeben.", "Bitte einen Satellite-Namen angeben.")

        try:
            # Satellite nach Alias suchen
            satellite = None
            for s in self.application.satellites.get_all():
                if s.alias.lower() == alias.lower():
                    satellite = s
                    break

            if not satellite:
                return IntentResult.success_with_response(f"Kein Satellite mit dem Namen {alias} gefunden.")

            # Registrierung loeschen
            if self.application.registration.delete_registration(satellite.mac_address):
                self.application.satellites.remove(satellite.id)
                return IntentResult.success_with_response(f"Registrierung von {alias} wurde geloescht.")
            return IntentResult.failure("Loeschen fehlgeschlagen.", f"Registrierung von {alias} konnte nicht geloescht werden.")
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    # =========================================================================
    # Plugin Management (14)
    # =========================================================================

    @intent("admin_plugin_count", description="Anzahl aktiver Plugins")
    @admin_only
    async def handle_plugin_count(self, data: IntentReceivedData) -> IntentResult:
        """Gibt die Anzahl geladener/aktiver Plugins zurueck."""
        _audit("admin_plugin_count", data.satellite_id, data.room_id)
        try:
            total = self.application.plugins.count
            enabled = self.application.plugins.enabled_count
            return IntentResult.success_with_response(
                f"Es sind {total} Plugins geladen, davon {enabled} aktiv."
            )
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    # =========================================================================
    # Training (15-19)
    # =========================================================================

    @intent("admin_training_status", description="Trainings-Status abfragen")
    @admin_only
    async def handle_training_status(self, data: IntentReceivedData) -> IntentResult:
        """Gibt den aktuellen Trainings-Status zurueck."""
        _audit("admin_training_status", data.satellite_id, data.room_id)
        try:
            trainer_service = self.application.services.get_service("TrainerService")
            active = trainer_service.active_trainer_id
            if active:
                progress = trainer_service.current_progress
                return IntentResult.success_with_response(
                    f"Ja, Training '{active}' laeuft. Status: {progress.state.name}."
                )
            return IntentResult.success_with_response("Nein, es laeuft kein Training.")
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    @intent("admin_training_start", description="Training starten")
    @admin_only
    async def handle_training_start(self, data: IntentReceivedData, model_type: str = "") -> IntentResult:
        """Startet ein Training."""
        _audit("admin_training_start", data.satellite_id, data.room_id, f"model_type={model_type}")
        if not model_type:
            return IntentResult.failure("Kein Modelltyp angegeben.", "Bitte einen Modelltyp angeben.")

        try:
            trainer_service = self.application.services.get_service("TrainerService")
            success, error = await trainer_service.start_training(model_type)
            if success:
                return IntentResult.success_with_response(f"Training '{model_type}' wurde gestartet.")
            return IntentResult.failure(error, f"Training konnte nicht gestartet werden: {error}")
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    @intent("admin_training_stop", description="Training stoppen")
    @admin_only
    async def handle_training_stop(self, data: IntentReceivedData) -> IntentResult:
        """Stoppt das laufende Training."""
        _audit("admin_training_stop", data.satellite_id, data.room_id)
        try:
            trainer_service = self.application.services.get_service("TrainerService")
            success, error = await trainer_service.stop_training()
            if success:
                return IntentResult.success_with_response("Training wurde gestoppt.")
            return IntentResult.failure(error, f"Training konnte nicht gestoppt werden: {error}")
        except Exception as e:
            return IntentResult.failure(str(e), f"Fehler: {e}")

    @intent("admin_training_last", description="Letztes Training abfragen")
    @admin_only
    async def handle_training_last(self, data: IntentReceivedData) -> IntentResult:
        """Gibt Informationen zum letzten Training zurueck."""
        _audit("admin_training_last", data.satellite_id, data.room_id)
        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        last = tracker.get_last_training()
        if not last:
            return IntentResult.success_with_response("Es wurde noch kein Training durchgefuehrt.")

        return IntentResult.success_with_response(self._format_training_entry(last))

    @intent("admin_training_last_specific", description="Letztes Training nach Typ abfragen")
    @admin_only
    async def handle_training_last_specific(self, data: IntentReceivedData, model_type: str = "") -> IntentResult:
        """Gibt Informationen zum letzten Training eines bestimmten Typs zurueck."""
        _audit("admin_training_last_specific", data.satellite_id, data.room_id, f"model_type={model_type}")
        if not model_type:
            return IntentResult.failure("Kein Modelltyp angegeben.", "Bitte einen Modelltyp angeben.")

        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        last = tracker.get_last_training(model_type)
        if not last:
            return IntentResult.success_with_response(f"Es wurde noch kein '{model_type}' Training durchgefuehrt.")

        return IntentResult.success_with_response(self._format_training_entry(last))

    # =========================================================================
    # History / Logs (20-27)
    # =========================================================================

    @intent("admin_last_requests", description="Letzte Anfragen anzeigen")
    @admin_only
    async def handle_last_requests(self, data: IntentReceivedData, count: int = 5) -> IntentResult:
        """Gibt die letzten N Anfragen zurueck."""
        _audit("admin_last_requests", data.satellite_id, data.room_id, f"count={count}")
        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        intents = tracker.get_last_intents(int(count))
        if not intents:
            return IntentResult.success_with_response("Keine Anfragen protokolliert.")

        lines = []
        for entry in intents:
            intent_name = entry.get("intent", "?")
            text = entry.get("original_text", "")[:50]
            lines.append(f"{intent_name}: {text}")

        return IntentResult.success_with_response(
            f"Die letzten {len(intents)} Anfragen: " + ". ".join(lines) + "."
        )

    @intent("admin_last_request_room", description="Letzte Anfrage im Raum")
    @admin_only
    async def handle_last_request_room(self, data: IntentReceivedData, room: str = "") -> IntentResult:
        """Gibt die letzte Anfrage in einem bestimmten Raum zurueck."""
        _audit("admin_last_request_room", data.satellite_id, data.room_id, f"room={room}")
        if not room:
            return IntentResult.failure("Kein Raum angegeben.", "Bitte einen Raum angeben.")

        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        intents = tracker.get_last_intents_by_room(room, 1)
        if not intents:
            return IntentResult.success_with_response(f"Keine Anfragen im Raum {room} protokolliert.")

        last = intents[-1]
        text = last.get("original_text", "unbekannt")
        return IntentResult.success_with_response(f"Die letzte Anfrage im {room} war: {text}.")

    @intent("admin_last_conversation", description="Letzte Conversation anzeigen")
    @admin_only
    async def handle_last_conversation(self, data: IntentReceivedData) -> IntentResult:
        """Gibt Informationen zur letzten Conversation zurueck."""
        _audit("admin_last_conversation", data.satellite_id, data.room_id)
        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        convs = tracker.get_last_conversations(1)
        if not convs:
            return IntentResult.success_with_response("Keine Conversations protokolliert.")

        conv = convs[-1]
        started = conv.get("started_at", "unbekannt")
        try:
            dt = datetime.fromisoformat(started)
            formatted = dt.strftime("%d.%m.%Y um %H:%M Uhr")
        except (ValueError, TypeError):
            formatted = started

        satellite = conv.get("satellite_id", "unbekannt")
        return IntentResult.success_with_response(
            f"Die letzte Conversation war am {formatted} mit Satellite {satellite}."
        )

    @intent("admin_last_conversations", description="Letzte Conversations anzeigen")
    @admin_only
    async def handle_last_conversations(self, data: IntentReceivedData, count: int = 5) -> IntentResult:
        """Gibt die letzten N Conversations zurueck."""
        _audit("admin_last_conversations", data.satellite_id, data.room_id, f"count={count}")
        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        convs = tracker.get_last_conversations(int(count))
        if not convs:
            return IntentResult.success_with_response("Keine Conversations protokolliert.")

        lines = []
        for conv in convs:
            started = conv.get("started_at", "?")
            try:
                dt = datetime.fromisoformat(started)
                formatted = dt.strftime("%d.%m. %H:%M")
            except (ValueError, TypeError):
                formatted = started
            satellite = conv.get("satellite_id", "?")[:8]
            lines.append(f"{formatted} ({satellite})")

        return IntentResult.success_with_response(
            f"Die letzten {len(convs)} Conversations: " + ", ".join(lines) + "."
        )

    @intent("admin_last_errors", description="Letzte Fehler anzeigen")
    @admin_only
    async def handle_last_errors(self, data: IntentReceivedData, count: int = 5) -> IntentResult:
        """Gibt die letzten N Fehler zurueck."""
        _audit("admin_last_errors", data.satellite_id, data.room_id, f"count={count}")
        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        errors = tracker.get_last_errors(int(count))
        if not errors:
            return IntentResult.success_with_response("Keine Fehler protokolliert.")

        lines = []
        for err in errors:
            source = err.get("source", "?")
            message = err.get("message", "?")[:60]
            lines.append(f"{source}: {message}")

        return IntentResult.success_with_response(
            f"Die letzten {len(errors)} Fehler: " + ". ".join(lines) + "."
        )

    @intent("admin_error_count_hours", description="Fehleranzahl in Stunden")
    @admin_only
    async def handle_error_count_hours(self, data: IntentReceivedData, hours: int = 24) -> IntentResult:
        """Gibt die Fehleranzahl der letzten N Stunden zurueck."""
        _audit("admin_error_count_hours", data.satellite_id, data.room_id, f"hours={hours}")
        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        count = tracker.get_error_count_since(int(hours))
        return IntentResult.success_with_response(
            f"Es gab {count} Fehler in den letzten {hours} Stunden."
        )

    @intent("admin_config_tool_last", description="Letzte Config-Tool Verbindung")
    @admin_only
    async def handle_config_tool_last(self, data: IntentReceivedData) -> IntentResult:
        """Gibt die letzte Config-Tool-Verbindung zurueck."""
        _audit("admin_config_tool_last", data.satellite_id, data.room_id)
        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        last = tracker.get_last_config_connection()
        if not last:
            return IntentResult.success_with_response("Kein Config-Tool war bisher verbunden.")

        connected_at = last.get("connected_at", "unbekannt")
        peer = last.get("peer_address", "unbekannt")
        try:
            dt = datetime.fromisoformat(connected_at)
            formatted = dt.strftime("%d.%m.%Y um %H:%M Uhr")
        except (ValueError, TypeError):
            formatted = connected_at

        return IntentResult.success_with_response(
            f"Das letzte Config-Tool war am {formatted} von {peer} verbunden."
        )

    @intent("admin_cache_clear", description="Activity-Cache leeren")
    @admin_only
    async def handle_cache_clear(self, data: IntentReceivedData) -> IntentResult:
        """Loescht alle Activity-Daten."""
        _audit("admin_cache_clear", data.satellite_id, data.room_id)
        tracker = self._get_tracker()
        if not tracker:
            return IntentResult.failure("ActivityTracker nicht verfuegbar.")

        tracker.clear_all()
        return IntentResult.success_with_response("Cache wurde geleert.")

    # =========================================================================
    # Hilfsmethoden
    # =========================================================================

    @staticmethod
    def _get_primary_ip() -> str:
        """Ermittelt die primaere IP-Adresse."""
        try:
            # Verbindung zu externem Host (ohne tatsaechlich zu senden)
            s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
            s.settimeout(0.1)
            s.connect(("8.8.8.8", 80))
            ip = s.getsockname()[0]
            s.close()
            return ip
        except Exception:
            return socket.gethostbyname(socket.gethostname())

    @staticmethod
    def _format_duration(seconds: float) -> str:
        """Formatiert eine Dauer in lesbaren Text."""
        total = int(seconds)
        days = total // 86400
        hours = (total % 86400) // 3600
        minutes = (total % 3600) // 60

        parts = []
        if days > 0:
            parts.append(f"{days} {'Tag' if days == 1 else 'Tagen'}")
        if hours > 0:
            parts.append(f"{hours} {'Stunde' if hours == 1 else 'Stunden'}")
        if minutes > 0:
            parts.append(f"{minutes} {'Minute' if minutes == 1 else 'Minuten'}")
        if not parts:
            return "weniger als einer Minute"

        return ", ".join(parts)

    @staticmethod
    def _format_training_entry(entry: dict[str, Any]) -> str:
        """Formatiert einen Trainings-Eintrag als Text."""
        trainer_id = entry.get("trainer_id", "unbekannt")
        started_at = entry.get("started_at", "unbekannt")
        success = entry.get("success", False)
        duration = entry.get("duration_seconds", 0)

        try:
            dt = datetime.fromisoformat(started_at)
            formatted = dt.strftime("%d.%m.%Y um %H:%M Uhr")
        except (ValueError, TypeError):
            formatted = started_at

        status = "erfolgreich" if success else "fehlgeschlagen"
        duration_text = AdminCommandsPlugin._format_duration(duration) if duration else "unbekannt"

        return (
            f"Das letzte Training '{trainer_id}' lief am {formatted}, "
            f"Dauer: {duration_text}, Status: {status}."
        )